Site pollution control agent injection method and system

Abstract

The invention provides a site pollution abatement agent injection method and system, and belongs to the technical field of pollution remediation. The method comprises the following steps: determining an in-situ injection agent; constructing a three-dimensional site model; based on the optimal injection parameters of different soil texture types, injection points are distributed in the three-dimensional site model, and an injection point vector point location map is obtained; according to the three-dimensional pollution space distribution model, the three-dimensional stratum model, the optimal injection parameters of different soil texture types, the injection point vector point location map and the medicament injection associated equation, generating a medicament injection scheme based on three-dimensional site model driving; the medicament injection scheme is guided into an injection equipment control system, and medicament injection is executed; and when the site pollutant remediation result does not reach the preset standard, updating the three-dimensional site model based on the current site, and repeating the steps until the site pollutant remediation result reaches the preset standard. The consistent distribution of the medicament injection space and the pollution space is ensured, the intelligent and accurate control of medicament injection is improved, and the medicament consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pollution remediation, and in particular to a method for injecting a site pollution control agent and a system for injecting a site pollution control agent. Background Art

[0002] With the process of modern industrialization, my country's economy has achieved rapid development, especially basic industries such as mining, oil production, petrochemicals, and chemicals have provided support for the rapid development of the national economy, but it has also caused multi-faceted damage to soil and groundwater resources, causing serious pollution and ecological health problems at many sites. For example, in 2013, a deep well sewage discharge by an enterprise in Weifang, Shandong caused soil and groundwater pollution. Some scholars believe that this incident can be regarded as the Chinese version of the "Love Canal Incident Moment". The "2021 China Ecological Environment Bulletin" shows that among more than 1,900 national groundwater environmental quality assessment points, Class I to IV water quality points account for 79.4%, and Class V water quality points account for 20.6%. Overall, the significant characteristics of soil and groundwater pollution in my country are a large base of stock pollution, a high risk of incremental pollution, and an overall pessimistic groundwater quality pollution, which seriously restricts the construction of ecological civilization in the new era. Therefore, efficient and precise remediation technology for contaminated soil and groundwater at development sites is crucial.

[0003] The remediation technologies for soil and groundwater pollution are mainly divided into two categories: ex situ remediation and in situ remediation. The advantages of in situ remediation over ex situ remediation are: ① It does not involve transportation and excavation and backfilling, and the cost is lower; ② The construction occupies a small space; ③ The impact on the construction or production on the site is small; ④ Secondary pollution is controllable; ⑤ It can reduce the direct exposure of pollutants during the remediation construction period and reduce health and safety risks. Therefore, in recent years, research on contaminated site remediation technology at home and abroad has mainly focused on in situ remediation technology. At present, the commonly used in situ remediation technologies in my country include in situ extraction, in situ thermal desorption, in situ bioremediation, in situ chemical remediation, etc. In actual application, in situ agent injection as an in situ remediation construction method is widely used in various remediation technologies such as in situ chemical oxidation, in situ chemical reduction, and in situ bioremediation. It is currently the most widely used technical method for in situ remediation of contaminated soil and groundwater in my country.

[0004] The in-situ agent injection technology method is to use certain construction equipment to inject chemical or biological remediation agents into contaminated groundwater or soil to reduce the concentration of pollutants and reduce or eliminate their impact on the environment. The main in-situ agent injection technology methods at home and abroad include injection well injection, direct push injection, high-pressure rotary injection and in-situ deep stirring injection. The injection well injection technology mainly constructs an injection well before injection, and then adds the agent material to the injection well at high pressure or normal pressure, and diffuses it to the contaminated target space through the sieve holes of the injection well. This technology is greatly restricted by the injection well. The horizontal position and sieve hole depth of the injection well after construction cannot be moved, and the sieve hole area of ​​the injection well is easy to be blocked. High-pressure rotary jet injection technology drills the high-pressure injection tube to a predetermined depth in the soil layer, turns on the rotating device and injection pump to allow the high-pressure agent material fluid to impact and cut the soil layer, so that the repair agent material and the soil and groundwater in the contaminated space are fully contacted and mixed. This technology can also add compressed air and high-pressure water, and has a good injection mixing effect, but the engineering implementation cost of this technology is high, the high-pressure rotary jet injection equipment is large, and the process is relatively complicated; in-situ deep stirring injection is similar to high-pressure rotary jet injection, and has a good treatment effect for specific deep soil and groundwater pollution. Due to cost constraints, it is mainly suitable for specific condition sites with single-round injection without repeated equipment entry. In recent years, direct push pressure differential injection has been widely used in the in-situ agent injection remediation of major soil and groundwater pollution. This technology injects the repair agent material into the target contaminated space of soil and groundwater through the injection rod under a certain pressure to achieve the degradation of pollutants. This technology is mainly completed by Geoprobe multi-functional drilling rigs. The equipment can be flexibly moved and occupies a small area, which is suitable for the control and remediation of most contaminated sites. Although the above-mentioned technologies can realize in-situ injection remediation of pollutants in different scenarios, and have their own characteristics in injection equipment, injection process, and injection means, there are still deficiencies in improving the spatial accuracy and intelligence of injection of pharmaceutical materials, and excessive injection of pharmaceutical materials also poses health risks to the ecological environment.

[0005] The purpose of in-situ injection is to inject the agent material into the target contaminated space, and achieve the degradation and removal of pollutants through the physical, chemical and biological reactions between the agent material and the site pollutants. However, soil and groundwater pollution are both hidden and heterogeneous. It is difficult to judge the spatial distribution state of underground pollutants during in-situ injection. The injection area is often arranged with multiple cylinders with an impact radius, and the underground injection depth is generally consistent. The formed injection space is too large, resulting in a large difference between the agent injection space and the actual contaminated space, as well as excessive injection of agent materials, and a lack of injection accuracy overall. In addition, the injection parameters required for different types of soil are also quite different, and the injection pressure, flow rate and other process parameters have a greater impact on the injection. How to accurately inject agent materials into the ground is a key technical issue in improving the level of in-situ injection remediation technology. In addition, the current patented technologies involving in-situ agent injection are mainly based on injection equipment, such as CN111744943B, CN111704228B and other patents. A small number of technical methods involving precision injection, such as CN114798706A, provide a high-precision injection method for in-situ remediation of contaminated soil and groundwater, but this technology mainly adopts the method of partition injection, which is still relatively limited in improving the injection accuracy and intelligent level. Therefore, it is urgent to develop intelligent in-situ agent precision injection technology methods.

[0006] In summary, the existing technology is mainly improved through injection devices and methods, but there are still deficiencies in matching the target space for agent injection with the actual contaminated space, and the distribution of underground pollutant space and concentration is irregular. The existing injection technology methods have the problem of excessive injection of agents into uncontaminated or low-contaminated spaces and insufficient injection of agents into heavily contaminated spaces, making it difficult to accurately control and adjust the injection of agents. Summary of the invention

[0007] The purpose of the embodiments of the present invention is to provide a method and system for injecting agents for site pollution control, so as to at least solve the above-mentioned problems of excessive injection of agents into uncontaminated or low-contaminated spaces and insufficient injection of agents into heavily contaminated spaces.

[0008] In order to achieve the above-mentioned object, the first aspect of the present invention provides a method for injecting a site pollution control agent, comprising:

[0009] Based on the predetermined data of the contaminated site to be treated, determine the in-situ injection agent and the fluid properties of the in-situ injection agent;

[0010] Based on the pre-acquired pollution distribution data and geological exploration borehole data, a three-dimensional site model is constructed; wherein the three-dimensional site model includes a three-dimensional pollution spatial distribution model and a three-dimensional stratum model;

[0011] Based on the soil type data and the fluid properties of the in-situ injection agent, the optimal injection parameters for different soil types are obtained through particle fluid simulation;

[0012] Based on the optimal injection parameters for different soil types, the injection points are arranged in the three-dimensional site model to obtain the injection point vector map;

[0013] Generate a reagent injection plan driven by a three-dimensional site model based on the three-dimensional pollution spatial distribution model, three-dimensional stratum model, optimal injection parameters for different soil types, injection point vector map and reagent injection correlation equation;

[0014] Importing the agent injection plan into the injection equipment control system to execute the site remediation agent injection;

[0015] Obtain the site pollutant remediation results after the injection of the agent. When the site pollutant remediation results do not meet the preset standards, update the three-dimensional site model based on the current site and repeat the above steps until the site pollutant remediation results meet the preset standards.

[0016] Optionally, the above-mentioned step of importing the agent injection scheme into the injection equipment control system to perform site remediation agent injection includes:

[0017] According to the drug injection scheme, a driving data packet is generated, and the driving data packet is imported into the injection device; wherein,

[0018] The injection device is configured as:

[0019] Based on the driver data packet, the drug injection plan is parsed;

[0020] Based on the agent injection scheme, the opening and closing of the jet nozzle and the injection volume of the agent are automatically adjusted according to the three-dimensional pollution spatial distribution model;

[0021] Based on the reagent injection plan and the three-dimensional formation model, the reagent injection parameters are automatically adjusted.

[0022] Optionally, the above-mentioned soil type data include at least one or more of the soil's permeability coefficient, bulk density, porosity and organic matter content, the fluid properties of the in-situ injected agent include at least one or more of the fluidity, viscosity and particle size of the in-situ agent, and the injection parameters of the soil type include at least one or more of the injection pressure, injection speed, injection flow rate and influence radius.

[0023] Optionally, the above-mentioned site pollution control agent injection method also includes:

[0024] Based on the initial site survey information, determine the data of the contaminated site to be treated; wherein the data of the contaminated site to be treated includes one or more of the pollutants, pollution scope and pollution degree of the contaminated site to be treated;

[0025] Based on the initial site survey information, geological surveys and drilling geotechnical tests are carried out to obtain geological survey hole data and soil type data.

[0026] Optionally, the construction process of the above three-dimensional site model is as follows:

[0027] Based on the initial site survey information, the pollution distribution survey is conducted using the grid division method to obtain pollution distribution data;

[0028] Based on the pollution distribution data, a three-dimensional pollution spatial distribution model is constructed;

[0029] Construct a three-dimensional stratigraphic model based on geological exploration borehole data.

[0030] Optionally, the method for constructing the three-dimensional pollution spatial distribution model includes one or more of a three-dimensional Kriging interpolation method, an inverse distance weighted interpolation method, and a nearest neighbor method.

[0031] Optionally, the above-mentioned optimal injection parameters include an optimal influence radius;

[0032] The above-mentioned optimal injection parameters based on different soil types are used to arrange the injection points in the three-dimensional site model to obtain the injection point vector map, including:

[0033] A1: Arrange two first injection points in any stratum of the 3D site model, take the two first injection points as two circle centers, and combine the optimal influence radius to form two intersecting first circles;

[0034] A2: Using the two first intersection points obtained by intersecting the two first circles, draw an external straight line passing through the two first intersection points;

[0035] A3: Arrange a second injection point on the outer straight line; wherein a second circle formed with the second injection point as the center and the optimal influence radius intersects with the first intersection point;

[0036] A4: using two second intersection points formed by the intersection of the second circle and any circle currently existing in the formation, a new outer straight line passing through the two second intersection points is drawn, and a new second injection point is arranged on the new outer straight line;

[0037] A5: Based on the new second injection point, a new second circle is obtained;

[0038] A6: Repeat A4 to A5 until all the layers are traversed;

[0039] A7: Repeat A1 to A7 until all strata in the 3D site model are traversed to obtain a vector point map of injection points.

[0040] Optionally, the construction rules of the above-mentioned drug injection correlation equation are as follows:

[0041] Theoretical calculation method and / or small-scale test method are used to construct the correlation equation of reagent injection for each soil type; among which, the theoretical calculation method calculates the reagent consumption based on the equations or ratios of physical reactions, chemical reactions and biological reactions, and the small-scale test method calculates the reagent consumption based on the laboratory gradient test.

[0042] Optionally, the above-mentioned agent injection correlation equation includes a pollution concentration agent injection correlation equation, an agent consumption integral equation and an injection time control equation;

[0043] Among them, the correlation equation of pollution concentration and agent injection is C 药剂 =C 污染 ×k 1 +C 有机 ×k 2 +C 其他 ×k 3 , the integral equation of drug consumption is M 药剂 =δ×β×∫C 药剂 dv, injection time control equation is T = M 药剂 / υ; among them, C 药剂 is the concentration of the agent to be injected into the soil, C 污染 is the concentration of pollutants in the soil, C 有机 is the concentration of organic matter in the soil, C 其他 is the concentration of reducing ions in the soil, M 药剂 is the injection volume of soil agent solution, k 1 , k 2 and k 3 is the coefficient of variation of the agent consumption with the concentration of the corresponding substance, δ is the agent safety margin coefficient, β is the proportional coefficient of the agent solution, T is the injection time of the agent solution per unit volume of soil, and υ is the injection rate of the agent solution.

[0044] Optionally, the above-mentioned site pollution control agent injection method also includes:

[0045] The online monitoring method of groundwater pollution and the soil drilling sampling detection method are combined to monitor and evaluate the site pollutants after the injection of the agent to obtain the site pollutant remediation results.

[0046] Optionally, the above-mentioned combined online groundwater pollution monitoring method and soil drilling sampling detection method are used to monitor and evaluate site pollutants after the injection of the agent, including:

[0047] The monitoring wells are evenly arranged according to the preset grid size data; the monitoring wells are used to detect various indicators of site pollutants;

[0048] Based on the index monitoring data obtained from the monitoring wells, the variation error of the pollutants on the site within the preset time period is obtained;

[0049] When the change error is less than the preset threshold, the soil drilling sampling method is used for monitoring and evaluation.

[0050] A second aspect of the present invention provides a site pollution control agent injection system, comprising:

[0051] An in-situ injection agent determination module is used to determine the in-situ injection agent to be taken and the fluid properties of the in-situ injection agent based on the predetermined data of the contaminated site to be treated;

[0052] A model building module is used to build a three-dimensional site model based on the pre-acquired pollution distribution data and geological exploration borehole data; wherein the three-dimensional site model includes a three-dimensional pollution spatial distribution model and a three-dimensional stratum model;

[0053] The optimal injection parameter determination module is used to obtain the optimal injection parameters for different soil types through particle fluid simulation based on soil type data and fluid properties of the in-situ injection agent;

[0054] The injection point layout module is used to layout the injection points in the three-dimensional site model based on the optimal injection parameters of different soil types, and obtain the injection point vector map;

[0055] The reagent injection scheme generation module is used to generate a reagent injection scheme driven by a three-dimensional site model based on the three-dimensional pollution spatial distribution model, the three-dimensional stratum model, the optimal injection parameters of different soil types, the injection point vector point map and the reagent injection association equation;

[0056] A reagent injection plan execution module is used to import the reagent injection plan into the injection equipment control system to execute the site remediation reagent injection;

[0057] The pollutant remediation monitoring module is used to obtain the site pollutant remediation results after the injection of the agent. When the site pollutant remediation results do not meet the preset standards, the three-dimensional site model is updated based on the current site, and the above steps are repeated until the site pollutant remediation results meet the preset standards.

[0058] In a third aspect of the present invention, a machine-readable storage medium is provided, on which instructions are stored, and when the instructions are executed by a processor, the processor is configured to execute the above-mentioned site pollution control agent injection method.

[0059] In a fourth aspect of the present invention, an electronic device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the site pollution control agent injection method when executing the computer program.

[0060] Through the above technical scheme, a method and system for injecting agents for site pollution control is provided. Based on the target pollutants in the data of the polluted site to be treated, the in-situ injection agent is determined, and the fluid properties of the in-situ injection agent are obtained. Based on the pollution distribution data and the geological exploration hole data, a three-dimensional pollution spatial distribution model and a three-dimensional formation model are obtained through software interpolation modeling. Based on the soil type and the properties of the injected agent, the optimal injection parameters for different soil types are obtained by numerical simulation of the agent jet injection of different soil types through particle fluid simulation. Based on the optimal injection parameters of different soil types, the injection points are arranged in the three-dimensional site model to obtain the injection point vector point map to optimize the arrangement of the injection points. According to the three-dimensional pollution spatial distribution model, the three-dimensional formation model, the optimal injection parameters of different soil types, the injection point vector point map and the agent injection association equation, a three-dimensional model-driven agent injection scheme is generated. The agent injection scheme is imported into the injection equipment control system to drive the injection equipment to automatically adjust the opening and closing of the jet nozzle and the injection volume according to the data of the pollution space distribution, and automatically retrieve and adjust the injection parameters of the agent according to the soil type data of the stratum, so as to ensure the consistency of the agent injection target space and the pollution space distribution, avoid blind injection in underground non-polluted areas or low-polluted areas, thereby improving the intelligent and precise control of agent injection and reducing the consumption of agents. Finally, based on the site pollutant remediation results of the current site, it is determined whether to update the three-dimensional site model and whether to generate a new agent injection scheme for agent injection again, so that the site pollutant remediation results meet the preset standards, thereby achieving the purpose of accurately describing the site characteristics and injection remediation design, and then optimizing the injection design, improving the remediation effect and reducing the remediation cost.

[0061] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0063] Figure 1 It is a flow chart of a method for injecting a site pollution control agent provided by one embodiment of the present invention;

[0064] Figure 2 It is a technical method roadmap for precise injection of site pollution control agents driven by a three-dimensional space model, provided by one embodiment of the present invention;

[0065] Figure 3 It is a schematic diagram of an injection point layout provided by an embodiment of the present invention;

[0066] Figure 4 It is a block diagram of a site pollution control agent injection system provided by one embodiment of the present invention;

[0067] Figure 5 It is a schematic diagram of the structure of an electronic device provided by a preferred embodiment of the present invention.

[0068] Description of Reference Numerals

[0069] 10 - electronic device, 100 - processor, 101 - memory, 102 - computer program. DETAILED DESCRIPTION

[0070] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0071] Example 1

[0072] Figure 1 This is a flow chart of a method for injecting a site pollution control agent provided by one embodiment of the present invention. Figure 1 As shown, an embodiment of the present invention provides a method for injecting a site pollution control agent, comprising:

[0073] S110: Determine the in-situ injection agent and the fluid properties of the in-situ injection agent based on the pre-determined data of the contaminated site to be treated;

[0074] In some implementations of the present embodiment, the above-mentioned site pollution control agent injection method also includes: determining the data of the contaminated site to be treated based on the initial site survey information; wherein the data of the contaminated site to be treated includes one or more of the pollutants, pollution scope and pollution degree of the contaminated site to be treated; based on the initial site survey information, conducting geological surveys and drilling geotechnical tests to obtain geological survey hole data and soil type data.

[0075] Specifically, for the proposed remediation and plots determined by the preliminary site survey, the preliminary site survey information is sorted out, including the main pollutants in the soil and groundwater, the scope of pollution, the degree of pollution and the remediation goals, to determine whether to use the in-situ agent injection technology. If the in-situ agent injection is used, the type of in-situ agent is determined. According to the type of in-situ agent, the fluid properties such as the solution concentration, fluidity, viscosity, acidity and alkalinity and particle size of the in-situ agent can be obtained. Based on the information such as soil strata and hydrogeology in the preliminary site survey, detailed geological surveys and drilling geotechnical tests are carried out in the contaminated area. The geological survey grid is from 20×20m to 50m×50m, and pumping tests and geotechnical tests are carried out to obtain soil type data such as soil type, permeability coefficient, bulk density, porosity, organic matter content, etc. in different soil layers.

[0076] S120: constructing a three-dimensional site model based on the pollution distribution data and geological exploration borehole data acquired in advance; wherein the three-dimensional site model includes a three-dimensional pollution spatial distribution model and a three-dimensional stratum model;

[0077] In some implementations of this embodiment, the construction process of the above three-dimensional site model is as follows:

[0078] Based on the initial site survey information, a pollution distribution survey is conducted using a grid division method to obtain pollution distribution data; based on the pollution distribution data, a three-dimensional pollution spatial distribution model is constructed;

[0079] Specifically, based on the preliminary investigation of the site to obtain information such as the scope and degree of pollution, a high-precision detailed investigation of pollution distribution is conducted. The soil pollution investigation grid is between 10m×10m and 20m×20m, the sampling depth is the first waterproof bottom plate, and the vertical sampling points are the topsoil (0cm to 50cm), where there are traces of pollution or where the on-site rapid detection equipment identifies relatively heavy pollution, near the groundwater level (50cm), and where the soil type changes. If a single type of soil layer is thick, additional soil samples are collected at 2m intervals. Based on the pollution distribution data obtained from the high-precision detailed investigation, a three-dimensional pollution spatial distribution model is constructed.

[0080] Among them, the method of constructing a three-dimensional pollution spatial distribution model includes one or more of a three-dimensional Kriging interpolation method, an inverse distance weighted interpolation method, and a nearest neighbor method.

[0081] Specifically, based on the soil pollution data from high-precision and detailed investigations, the three-dimensional pollution spatial distribution model is constructed mainly using three-dimensional Kriging interpolation (Kriging), inverse distance weighted interpolation (IDW), nearest neighbor method (NearestNeighbor), etc. It can be realized through simulation software such as ArcGIS, GMS, EVS and Visual MODFLOW, and the three-dimensional model entity data in .dat format can be exported. The model recognition granularity is 1m 3 ~2m 3 .

[0082] Construct a three-dimensional stratigraphic model based on geological exploration borehole data.

[0083] Specifically, based on the information analysis of the preliminary site investigation, detailed geological surveys and geotechnical tests are carried out in the contaminated area, and a three-dimensional stratigraphic model containing soil type information is constructed based on the detailed geological survey and geotechnical test data.

[0084] In some implementations of this embodiment, based on the detailed geological survey and drilling geotechnical test data of the contaminated area, the hole data is used to construct a three-dimensional stratigraphic model containing soil type information. The stratigraphic profile is mainly constructed by drilling coordinates and layered data, and then completed in the form of profile interpolation. It can be implemented through simulation software such as ArcGIS, GMS and EVS, and the three-dimensional model entity data in .dat format is exported. The model recognition granularity is 1m 3 ~2m 3 .

[0085] S130: Based on the soil type data and the fluid properties of the in-situ injection agent, the optimal injection parameters for different soil types are obtained through particle fluid simulation;

[0086] Among them, the soil type data includes at least one or more of the soil's permeability coefficient, bulk density, porosity and organic matter content, the fluid properties of the in-situ injected agent include at least one or more of the fluidity, viscosity and particle size of the in-situ agent, and the injection parameters of the soil type include at least one or more of the injection pressure, injection speed, injection flow rate and influence radius.

[0087] Specifically, particle hydrodynamics simulation (SPH) software and computational fluid dynamics (CFD) simulation software were used to input information such as the permeability coefficient, bulk density, porosity, organic matter content of different soil types, and information such as the fluidity, viscosity and particle size of the in-situ agent. The jet injection of agents into different soil types was numerically simulated to obtain the optimal injection parameters such as the optimal injection pressure, optimal injection speed, optimal injection flow rate and optimal influence radius for different soil types.

[0088] S140: Based on the optimal injection parameters of different soil types, the injection points are arranged in the three-dimensional site model to obtain a vector point map of the injection points;

[0089] Please refer to Figure 3 , Figure 3It is a schematic diagram of an injection point layout provided by an embodiment of the present invention. In some embodiments of this embodiment, the above-mentioned optimal injection parameters include an optimal influence radius; the above-mentioned optimal injection parameters based on different soil types are used to arrange injection points in a three-dimensional site model to obtain an injection point vector point map, including: A1: arranging two first injection points in any stratum of the three-dimensional site model, taking the two first injection points as two circle centers, and combining the optimal influence radius to form two intersecting first circles; A2: using the two first intersection points obtained by the intersection of the two first circles, draw an external straight line passing through the two first intersection points; A3: arranging the second injection points on the external straight line. injection point; wherein, with the second injection point as the center, a second circle formed in combination with the optimal influence radius intersects with the first intersection point; A4: using the two second intersection points formed by the intersection of the second circle and any circle currently existing in the stratum, a new external straight line passing through the two second intersection points is drawn, and a new second injection point is arranged on the new external straight line; A5: based on the new second injection point, a new second circle is obtained; A6: A4 to A5 are repeated until the stratum is traversed; A7: A1 to A7 are repeated until all strata of the three-dimensional site model are traversed to obtain a vector point map of the injection points.

[0090] Specifically, based on the obtained optimal influence radius, the injection points are arranged using spatial software. First, two injection points are arranged in the i-th (1≤i≤the total number of strata in the three-dimensional site model) stratum of the three-dimensional site model. The two injection points are used as the centers of two circles, and the circles formed by the optimal influence radius are intersected and superimposed, and the intersection angle of the circles is between 20 and 30°. Then, the third injection point is arranged on the outer straight line formed by the two intersection points of the circles. The circle formed by the third injection point combined with the optimal influence radius intersects with the intersection point of the first two circles. In turn, new injection points are arranged at the intersection points of any two circles until the local layer injection points are arranged. The circles formed by each injection point combined with the optimal influence radius are superimposed on each other; then, the injection points of other strata are optimized in the same way to form a vector point map of injection points consistent with the three-dimensional site model. Thus, the purpose of optimizing the arrangement of injection points is achieved.

[0091] It should be noted that, since the optimal injection parameters for different soil types are different, when arranging the injection points, the corresponding optimal influence radius should be selected to draw the circle according to the different soil types.

[0092] S150: Generate a reagent injection plan driven by a three-dimensional site model according to the three-dimensional pollution spatial distribution model, the three-dimensional stratum model, the optimal injection parameters of different soil types, the injection point vector point map and the reagent injection association equation;

[0093] In some implementations of this embodiment, numerical software is used to integrally estimate the total amount of agent required based on the agent injection correlation equation and the three-dimensional pollution spatial distribution model in the three-dimensional site model, thereby intelligently and accurately improving the agent matching amount.

[0094] Specifically, Python, Java and other programming languages ​​are used to call and program the three-dimensional pollution spatial distribution model, three-dimensional formation model, optimal injection parameters for different soil types, injection point vector point map and agent injection association equations involved, and couple to form an injection drive data package .dat (the injection drive data package contains the agent injection plan). The injection drive data package .dat based on the three-dimensional site model is imported into the injection equipment control system, so that the injection equipment can intelligently adjust whether to jet injection and the injection process parameters and injection amount according to the spatial distribution of pollution and the soil types of different formations, thereby achieving the purpose of intelligent automatic and precise injection of control remediation agents, improving the accuracy of in-situ agents, and reducing the total consumption of agents.

[0095] S160: Importing the agent injection plan into the injection equipment control system to execute the site remediation agent injection;

[0096] In some implementations of the present embodiment, the above-mentioned importing of the agent injection scheme into the injection equipment control system to execute the site remediation agent injection includes: generating a drive data packet according to the agent injection scheme, and importing the drive data packet into the injection equipment; wherein the injection equipment is configured to: parse and obtain the agent injection scheme based on the drive data packet; based on the agent injection scheme, automatically adjust the opening and closing of the jet nozzle and the agent injection amount according to the three-dimensional pollution spatial distribution model; based on the agent injection scheme, automatically adjust the agent injection parameters according to the three-dimensional formation model.

[0097] Among them, the injection equipment used is mainly a direct-push pressure jet injection process. First, according to the injection point vector point map, the injection equipment is arranged at the injection point in sequence, and the injection rod with an injection hole on the top is directly pushed to the specified depth underground. Then the agent material is poured into the injection tube through a high-pressure pump. In the process of pulling up the injection rod, according to the injection drive data packet program, the agent is intelligently controlled to be radially sprayed into the soil through the holes around the drill bit. The injection equipment will automatically adjust the opening and closing of the jet nozzle and the injection amount of the agent according to the three-dimensional pollution spatial distribution model in the three-dimensional site model. The injection equipment automatically retrieves and adjusts the injection parameters of the agent according to the soil type data of the three-dimensional formation model in the three-dimensional site model, so as to realize automatic identification and adjustment of the injection parameters according to the three-dimensional formation model data.

[0098] S170: Obtain the site pollutant remediation result after the injection of the agent. When the site pollutant remediation result does not meet the preset standard, update the three-dimensional site model based on the current site and repeat the above steps until the site pollutant remediation result meets the preset standard.

[0099] Specifically, the injected agent and the site pollutants undergo physical, chemical and biological reactions, and the site pollutant remediation results after the agent is injected are obtained. If the site pollutant remediation results meet the preset standards, the site remediation of the polluted land is deemed to be completed; if the site pollutant remediation results do not meet the preset standards, the soil type (soil type includes soil permeability, bulk density, porosity and organic matter content) and the data of the polluted site to be treated (the data of the polluted site to be treated includes the pollutants, pollution range and pollution degree of the polluted site to be treated) are updated based on the current site after the agent remediation to update the three-dimensional site model, and S110 to S170 are repeated until the site pollutant remediation results meet the preset standards. Among them, the judgment condition of whether the site pollutant remediation results meet the preset standards is: if two consecutive monitorings (with an interval of 7 days) C 污染物 ≥C 标 , a second injection is required; if two consecutive monitorings (7 days apart) are performed, C 污染物 <C 标 , then the preset standard is reached, among which, C 污染物 is the concentration of pollutants in the soil, C 标 It is the highest standard for the concentration of pollutants in the soil.

[0100] In the above implementation process, the method determines the in-situ injection agent to be taken based on the target pollutants in the data of the contaminated site to be treated, and obtains the fluid properties of the in-situ injection agent. Based on the pollution distribution data and the geological exploration hole data, a three-dimensional pollution spatial distribution model and a three-dimensional formation model are obtained through software interpolation modeling. Based on the soil type and the properties of the injected agent, the optimal injection parameters for different soil types are obtained by numerical simulation of the agent jet injection of different soil types through particle fluid simulation. Based on the optimal injection parameters of different soil types, the injection points are arranged in the three-dimensional site model to obtain the injection point vector point map to optimize the arrangement of the injection points. According to the three-dimensional pollution spatial distribution model, the three-dimensional formation model, the optimal injection parameters of different soil types, the injection point vector point map and the agent injection association equation, a three-dimensional model-driven agent injection plan is generated. The agent injection scheme is imported into the injection equipment control system to drive the injection equipment to automatically adjust the opening and closing of the jet nozzle and the injection volume according to the data of the pollution space distribution, and automatically retrieve and adjust the injection parameters of the agent according to the soil type data of the stratum, so as to ensure the consistency of the agent injection target space and the pollution space distribution, avoid blind injection in underground non-polluted areas or low-polluted areas, thereby improving the intelligent and precise control of agent injection and reducing the consumption of agents. Finally, based on the site pollutant remediation results of the current site, it is determined whether to update the three-dimensional site model and whether to generate a new agent injection scheme for agent injection again, so that the site pollutant remediation results meet the preset standards, thereby achieving the purpose of accurately describing the site characteristics and injection remediation design, and then optimizing the injection design, improving the remediation effect and reducing the remediation cost.

[0101] In some implementations of this embodiment, the construction rules of the above-mentioned agent injection correlation equation are as follows: adopt theoretical calculation method and / or small-scale test method to construct the agent injection correlation equation of each soil type; wherein, the theoretical calculation method is to calculate the agent consumption based on the equation or ratio of physical reaction, chemical reaction and biological reaction, and the small-scale test method is to calculate the agent consumption based on the laboratory gradient test. Thus, the theoretical calculation or small-scale test method is adopted to establish the algorithm of the theoretical addition amount of the agent material, and form the agent injection correlation equation of each soil type.

[0102] In some implementations of this embodiment, the above-mentioned agent injection correlation equation includes a pollution concentration agent injection correlation equation, an agent consumption integral equation and an injection time control equation; wherein the pollution concentration agent injection correlation equation is C 药剂 =C 污染 ×k 1 +C 有机 ×k 2 +C 其他 ×k 3 , the integral equation of drug consumption is M 药剂=δ×β×∫C 药剂 dv, injection time control equation is T = M 药剂 / υ; among them, C 药剂 is the concentration of the agent to be injected into the soil, C 污染 is the concentration of pollutants in the soil, C 有机 is the concentration of organic matter in the soil, C 其他 is the concentration of reducing ions in the soil, M 药剂 is the injection volume of soil agent solution, k 1 , k 2 and k 3 is the coefficient of variation of the agent consumption with the concentration of the corresponding substance, δ is the agent safety margin coefficient, β is the proportional coefficient of the agent solution, T is the injection time of the agent solution per unit volume of soil, and υ is the injection rate of the agent solution.

[0103] In some implementations of this embodiment, the above-mentioned site pollution control agent injection method also includes: combining the groundwater pollution online monitoring method and the soil drilling sampling detection method to monitor and evaluate the site pollutants after the agent injection to obtain the site pollutant remediation results.

[0104] Specifically, the injected agents and site pollutants undergo physical, chemical and biological reactions, and the remediation effect is monitored and evaluated by combining an online groundwater pollution monitoring method with a soil drilling sampling detection method to obtain site pollutant remediation results.

[0105] In some implementations of this embodiment, the above-mentioned method for monitoring groundwater pollution online and the soil drilling sampling detection method are combined to monitor and evaluate site pollutants after the injection of the agent, including:

[0106] The monitoring wells are evenly arranged according to the preset grid size data; the monitoring wells are used to detect various indicators of site pollutants;

[0107] The monitoring wells are arranged in a grid of 20m×20m-50m×50m, with no less than 3 monitoring wells in a single plot, and the monitoring wells need to be evenly distributed in the polluted plot; the monitoring indicators include target pollutants and conventional groundwater indicators, such as NO 3 -1 , TPH, ORP, DO, Ph, etc.

[0108] Based on the index monitoring data obtained from the monitoring wells, the variation error of the site pollutants within the preset time period is obtained;

[0109] Specifically, the indicator monitoring data obtained from the monitoring wells is uploaded in an online monitoring manner, and the uploading frequency of the indicator monitoring data is ≤3h / time.

[0110] When the change error is less than the preset threshold, the soil drilling sampling method is used for monitoring and evaluation.

[0111] Exemplarily, when the seven-day variation error of site pollutants is ≤10%, the soil drilling sampling detection method is initiated to evaluate the remediation effect.

[0112] Example 2

[0113] Please refer to Figure 2 , Figure 2 A technical method roadmap for precise injection of site pollution control agents driven by a three-dimensional space model is provided in one embodiment of the present invention.

[0114] In this example, the plot includes multiple interlaced pollution plumes, and the pollutants are petroleum hydrocarbons. After preliminary investigation and assessment, the petroleum hydrocarbons (TPH) in the soil and groundwater have a large risk to human health and need to be repaired and managed. The contaminated area is about 1,500 square meters, the maximum contamination depth is 8 meters, and the soil types of the strata are miscellaneous fill, clay and clay from top to bottom. The preliminary investigation and risk assessment report recommends the use of in-situ chemical oxidation technology for remediation and management.

[0115] Step 1: For the proposed remediation and plots determined by the preliminary site investigation, the in-situ injection agent is determined to be sodium persulfate solution (Na SO 8 mass ratio 35%), and obtain the solution fluid properties of the agent;

[0116] Step 2: Based on the information analysis of the preliminary site investigation, 10 soil sampling points were set up in the polluted land according to the 10m×10m grid, and 5 soil samples were taken in the vertical direction of the soil holes to conduct a high-precision detailed investigation of the pollution distribution. Based on the pollution data from the high-precision detailed investigation, the IDW inverse distance interpolation method of the GMS software was used to construct a three-dimensional pollution spatial distribution model. The amount of soil that exceeded the pollution standard in the model was 4716m 3 , heavy pollution (more than 2 times the standard) earthwork volume is 159m 3 , export .sol format solid model data;

[0117] Step 3: Based on the information analysis of the preliminary site investigation, carry out detailed geological surveys and geotechnical tests in the contaminated area, and build a three-dimensional stratigraphic model containing soil type information based on the detailed geological survey and geotechnical test data. The plot can be divided into 13 parts according to the soil type, and the .sol format entity model data can be exported;

[0118] Step 4: Based on the soil type data obtained from the detailed geological survey and geotechnical test data in step 3, combined with the type of in-situ injection agent determined in step 1, numerical simulation is used to obtain the optimal injection parameters for different soil types: injection pressure of 0.5MPa, injection rate of 15L / min, and influence radius of 2.5m for miscellaneous fill; injection pressure of 0.8MPa, injection rate of 8L / min, and influence radius of 1.8m for silt clay; injection pressure of 1.5MPa, injection rate of 5L / min, and influence radius of 1.3m for clay. Optimize the arrangement of injection points, set up about 170 injection points in total, and arrange the vector coordinate information of each point;

[0119] Step 5: Take a small test method to establish the theoretical addition amount algorithm of the reagent material, form the correlation equation of reagent injection with different pollution concentrations under different soil types, and use numerical integration to estimate the required Na SO by combining the pollution spatial distribution model in step 2. 8 The total amount of reagents is 185t. The required amount of reagents is prepared into activation solution in advance and transported to the site for standby use.

[0120] Step 6, coupling the agent attribute information obtained in steps 1 to 5, the three-dimensional pollution spatial distribution model, the three-dimensional formation model, the optimal injection parameters for different soil types, the pollution concentration-agent injection volume correlation equation and the injection arrangement point information to form an injection drive data package .dat;

[0121] Step 7, import the injection drive data packet .dat based on the three-dimensional space model in step 6 into the injection device control system, and the injection device automatically and intelligently and accurately injects the medicine according to the arranged injection point sequence;

[0122] Step 8: The injected sodium persulfate agent reacts with the petroleum hydrocarbon pollutants in the site to produce an oxidation reaction. Seven days after the restoration, the restoration effect is monitored and evaluated by sampling from groundwater monitoring wells (three wells are evenly distributed) and sampling from soil boreholes (10m×10m grid);

[0123] Step 9. The test results show that the TPH concentration in the soil is 39 mg / kg and the TPH concentration in the groundwater is 0.8 mg / L, which meets the remediation target value requirements.

[0124] In this embodiment, if conventional injection is used, the dosage ratio of the agent to the contaminated soil is calculated as 2%, and the required amount of the agent is 480t. The intelligent and precise injection technology method of site pollution control agents driven by a three-dimensional spatial model in this embodiment is adopted, and the required amount of the agent is 185t, which can be greatly reduced by 61.5%. Moreover, the sodium persulfate agent can be accurately injected into the target contaminated space for remediation through the three-dimensional spatial distribution model of the pollution, thereby avoiding ineffective injection into non-polluted or low-polluted spaces.

[0125] Example 3

[0126] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1 to 5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, refer specifically to the steps and methods given in Example 2, and no further description is given here.

[0127] In this example, the land pollutants are benzene and toluene. After preliminary investigation and evaluation, the benzene and toluene in the soil exceeded the Class II screening standard value for construction land (GB36600-2018), and the benzene and toluene in the groundwater also exceeded the Class III quality standard for groundwater (GB14848-2017), requiring remediation. The contaminated area is about 240 square meters, the maximum contamination depth is 10 meters, and the soil types of the strata are miscellaneous fill, fine sand and clay from top to bottom. The investigation and evaluation report recommends the use of in-situ chemical oxidation technology for remediation.

[0128] According to the situation of the target pollutant, in step 1 to step 5, the repair in this embodiment adopts the in-situ injection of potassium permanganate type repair solution (KMnO 4 A high-precision detailed investigation of pollution distribution was carried out according to a 10m×10m grid, and the IDW inverse distance interpolation method of GMS software was used to construct a three-dimensional pollution spatial distribution model. The amount of earthwork that exceeded the pollution standard in the three-dimensional pollution spatial distribution model was 1680m 3 , export .sol format entity model data; construct a three-dimensional stratigraphic model containing soil type information, and divide the plot into 5 parts according to the soil type, and export .sol format entity model data. Obtain the optimal injection parameters for different soil types: miscellaneous fill injection pressure 0.4MPa, injection rate 15L / min, influence radius 2.5m; fine sand injection pressure 0.2MPa, injection rate 20L / min, influence radius 3.4m; silt clay injection pressure 0.9MPa, injection rate 5L / min, influence radius 1.8m, optimize the arrangement of injection points, and arrange a total of 21 injection points; adopt numerical integration to estimate the total amount of KMnO4 agent required to be 24t. In step 9, the remediation effect evaluation shows that the benzene and toluene in the soil are lower than the standard value of Class II construction land, and the benzene and toluene in the groundwater are lower than the Class III groundwater quality standard, achieving the remediation goal.

[0129] In this embodiment, if the conventional injection is used, the dosage ratio of the agent to the contaminated soil is calculated as 1.5%, and the required amount of the agent is 36 tons. By adopting the intelligent and precise injection technology method of site pollution control agents driven by a three-dimensional spatial model in this embodiment, the required amount of the agent is 24 tons, which can be reduced by 33.3%. Moreover, the potassium permanganate agent can be accurately injected into the target contaminated space for remediation through the three-dimensional spatial distribution model of the pollution, avoiding ineffective injection into non-polluted or low-polluted spaces.

[0130] Example 4

[0131] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1 to 5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, refer specifically to the steps and methods given in Example 2, and no further description is given here.

[0132] In this example, the land parcel is a single pollution plume, and the pollutants are heavy petroleum pollutants. After preliminary investigation and evaluation, the total petroleum hydrocarbons and naphthalene in the soil exceed the second-class screening standard value for construction land (GB36600-2018). The groundwater is buried deep and no pollution has been formed. Soil pollution needs to be repaired. The area of ​​the single pollution plume to be repaired is about 517 square meters, the maximum pollution depth is 12 meters, and the polluted strata are all silt sand. It is recommended to use in-situ chemical oxidation technology for repair and treatment.

[0133] According to the situation of the target pollutants, in step 1 to step 5, the remediation of this embodiment adopts in-situ injection of Fenton-type remediation liquid (H2O2:FeSO4=1:1, the total mass ratio of Fenton reagent is 40%); a high-precision detailed investigation of pollution distribution is carried out according to a 10m×10m grid, and the IDW inverse distance interpolation method of GMS software is used to construct a three-dimensional pollution spatial distribution model. The volume of earthwork with excessive pollution in the model is 3722m 3 , export .sol format entity model data; in this embodiment, there is only one type of soil in the contaminated space, and there is no need to build a three-dimensional stratigraphic model containing soil type information; obtain the optimal injection parameters for silt soil type: injection pressure 0.3MPa, injection rate 17L / min, influence radius 3.1m; optimize the arrangement of injection points, and set up 14 injection points in total; use numerical integration to estimate the total amount of Fenton reagent required to be 137t. In step 9, the remediation effect evaluation shows that the total petroleum hydrocarbons and naphthalene in the soil are lower than the standard values ​​of Class II construction land, achieving the remediation goal.

[0134] In this embodiment, if the conventional injection is used, the dosage ratio of the agent to the contaminated soil is calculated as 2.2%, and the required amount of the agent is 164t. By adopting the intelligent and precise injection technology method of site pollution control agents driven by a three-dimensional spatial model in this embodiment, the required amount of the agent is 137t, which can be reduced by 16.5%. Moreover, the potassium permanganate agent can be accurately injected into the target contaminated space for remediation through the three-dimensional spatial distribution model of the pollution, thereby avoiding ineffective injection into unpolluted or low-polluted spaces.

[0135] Example 5

[0136] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1 to 5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, refer specifically to the steps and methods given in Example 2, and no further description is given here.

[0137] This example is a plot of land contaminated by a point-shaped solvent leakage. The contaminated space is in the shape of an inverted funnel. The leaked pollutant is trichloroethylene, which has not yet diffused and migrated to the groundwater. It is located around the device facilities and cannot be treated ex situ. Emergency in situ oxidation and remediation treatment of the contaminated soil is required. The contaminated area is 190 square meters, the maximum contamination depth is 7 meters, and the maximum contamination concentration exceeds the screening value of Class II construction land by 5 times. The contaminated strata are all silt sand.

[0138] According to the situation of the target pollutants, in steps 1 to 5, this remediation adopts the in-situ injection of sodium persulfate type remediation solution (Na SO 8 A high-precision detailed investigation of pollution distribution was carried out according to a 10m×10m grid, and a three-dimensional pollution spatial distribution model was constructed using the IDW inverse distance interpolation method of the GMS software. The amount of earthwork that exceeded the pollution standard in the model was 537m 3 , the contaminated space is a typical inverted funnel-shaped non-uniform spatial distribution, and the .sol format entity model data is exported; in this embodiment, there is only one type of soil in the contaminated space, and there is no need to build a three-dimensional stratigraphic model containing soil type information; the optimal injection parameters for silt soil type are obtained: injection pressure 0.2MPa, injection rate 14L / min, and influence radius 3.5m; the injection points are optimized and arranged, and a total of 5 injection points are arranged; the total amount of sodium persulfate required is estimated to be 22t by numerical integration. In step 9, the remediation effect evaluation shows that the trichloroethylene in the soil is lower than the standard value of Class II construction land, achieving the remediation goal.

[0139] In this embodiment, if conventional injection is used, the dosage ratio of the agent to the contaminated soil is calculated as 2%, and the required amount of the agent is 54t. The intelligent and precise injection technology method of the site pollution control agent driven by the three-dimensional spatial model in this embodiment is adopted, and the required amount of the agent is 22t, which can be reduced by 59%. Moreover, the sodium persulfate agent can be accurately injected into the target contaminated space for repair through the three-dimensional spatial distribution model of the pollution, thereby avoiding the ineffective injection of the uncontaminated or low-contaminated space in the upper part of the funnel.

[0140] Example 6

[0141] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1-5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, specific reference is made to the steps and methods given in Example 2, and no further description is given here.

[0142] This example is a contaminated plot of land at a gas station. The main sources of pollution are early pollution from buried tanks, shallow pollution from surface seepage in the washing workshop, and pollution in the middle layer of pipelines, forming an intricately interwoven polluted space. The soil and groundwater contain excessive levels of the pollutant methyl tert-butyl ether, and the contaminated soil needs to be oxidized and remediated in situ. The contaminated area is 683 square meters, with a maximum contamination depth of 9 meters, but most of the contamination depth is between 3 and 7 meters, and the contaminated strata are silt sand and silty clay layers.

[0143] According to the situation of the target pollutants, in steps 1-5, this remediation adopts the in-situ injection of sodium persulfate type remediation solution (NaS O 8 The pollution distribution was investigated in detail with high precision according to the 10m×10m grid, and the IDW inverse distance interpolation method of GMS software was used to construct a three-dimensional pollution spatial distribution model. The amount of earthwork that exceeded the pollution standard in the model was 1137m 3 , there are many spatial dislocations of underground pollution, and the .sol format entity model data is exported; a three-dimensional stratigraphic model containing soil type information is constructed, and the plot can be divided into three parts according to the soil type, and the .sol format entity model data is exported; the optimal injection parameters for different soil types are obtained: 0.2MPa injection pressure, 16L / min injection rate, and 3.1m impact radius for silt sand; 0.9MPa injection pressure, 5L / min injection rate, and 1.8m impact radius for silt clay, and the injection points are optimally arranged, with a total of 9 injection points arranged; the total amount of sodium persulfate required is estimated to be 39t by numerical integration. In step 9, the remediation effect evaluation shows that the methyl tert-butyl ether in the soil has reached the remediation target.

[0144] In this embodiment, if conventional injection is used, the dosage ratio of the agent to the contaminated soil is calculated as 1.8%, and the required amount of the agent is 122t. By adopting the intelligent and precise injection technology method of site pollution control agents driven by a three-dimensional spatial model in this embodiment, the required amount of the agent is 39t, which can be reduced by 68%. Moreover, the sodium persulfate agent can be accurately injected into the target contaminated space for remediation through the three-dimensional spatial distribution model of the pollution, thereby avoiding ineffective injection into non-polluted or low-polluted spaces.

[0145] Example 7

[0146] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1-5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, specific reference is made to the steps and methods given in Example 2, and no further description is given here.

[0147] This example is a clay interlayer contaminated plot. The xylene pollutants mainly migrate and diffuse in the fine sand layer and do not pollute the thick clay interlayer. However, the pollution concentrations exceed the standard above and below the thick interlayer. It is necessary to carry out in-situ oxidation and remediation treatment on the contaminated soil and groundwater. The contaminated area is 306㎡, and the maximum contamination depth is 13m. The pollution concentration of the clay interlayer in the middle 5 to 9m does not exceed the standard, and the contaminated strata are miscellaneous fill and fine sand.

[0148] According to the situation of the target pollutants, in steps 1-5, this remediation adopts the in-situ injection of potassium permanganate type remediation solution (KMnO 4 A high-precision detailed investigation of pollution distribution was carried out according to a 10m×10m grid, and a three-dimensional pollution spatial distribution model was constructed using the IDW inverse distance interpolation method of the GMS software. The amount of earthwork that exceeded the pollution standard in the model was 815m 3 , pollutants diffuse around the clay interlayer, and the pollution concentration in the lower part of the interlayer is also low, so no injection of agents is needed for remediation, and .sol format entity model data is exported; a three-dimensional stratigraphic model containing soil type information is constructed, and the plot can be divided into 5 parts according to the soil type, and .sol format entity model data is exported; the optimal injection parameters for different soil types are obtained: injection pressure of miscellaneous fill soil is 0.3MPa, injection rate is 15L / min, and influence radius is 2.6m; injection pressure of fine sand soil is 0.2MPa, injection rate is 18L / min, and influence radius is 3.1m, and the injection points are optimized and arranged, with a total of 8 injection points; numerical integration is used to estimate the total amount of potassium permanganate required to be 39t. In step 9, the remediation effect evaluation shows that the methyl tert-butyl ether in the soil has reached the remediation target.

[0149] In this embodiment, if the conventional injection is used, the dosage ratio of the agent to the contaminated soil is calculated as 2.2%, and the required amount of the agent is 107t. By adopting the intelligent and precise injection technology method of site pollution control agents driven by a three-dimensional spatial model in this embodiment, the required amount of the agent is 39t, which can be reduced by 64%. Moreover, the potassium permanganate agent can be accurately injected into the target contaminated space for remediation through the three-dimensional spatial distribution model of the pollution, thereby avoiding ineffective injection into non-polluted or low-polluted spaces.

[0150] Example 8

[0151] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1-5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, specific reference is made to the steps and methods given in Example 2, and no further description is given here.

[0152] This example is a heavy metal lead contaminated site. After preliminary investigation and risk assessment, the lead in the soil and groundwater poses a greater risk to human health and requires in-situ solidification / stabilization treatment. The contaminated area to be repaired is about 200 square meters, the contamination depth is 2 to 6 meters, and the soil type at the contamination depth is powdery clay.

[0153] According to the situation of the target pollutants, in steps 1-5, this remediation adopts in-situ injection of curing / stabilizing agent (dosage ratio 10% sodium sulfide + 3% calcium dihydrogen phosphate + 25% cement); a high-precision detailed investigation of pollution distribution is carried out according to the 10m×10m grid, and the IDW inverse distance interpolation method of GMS software is used to construct a three-dimensional pollution spatial distribution model. The amount of earthwork exceeding the pollution standard in the model is 527m 3 , export .sol format entity model data; in this embodiment, there is only one type of soil in the contaminated space, and there is no need to build a three-dimensional stratigraphic model containing soil type information; obtain the optimal injection parameters for silty clay soil type: injection pressure 2.3MPa, injection rate 12L / min, influence radius 2.4m; optimize the arrangement of injection points, and arrange a total of 7 injection points; use numerical integration to estimate the total amount of solidification / stabilization agent required to be 400t. In step 9, the remediation effect evaluation shows that the leaching toxicity of lead in the soil reaches the remediation target.

[0154] In this embodiment, if the injection is performed conventionally, the dosage ratio of the agent to the contaminated soil is calculated as 10% sodium sulfide + 3% calcium dihydrogen phosphate + 25% cement, and the required amount of agent is about 600t. By adopting the intelligent and precise injection technology method of site pollution control agents driven by a three-dimensional spatial model in this embodiment, the required amount of agent is 400t, which can be reduced by 33%. Moreover, the solidification / stabilization agent can be accurately injected into the target contaminated space for repair through the three-dimensional spatial distribution model of the pollution, thereby avoiding ineffective injection into non-polluted or low-polluted spaces.

[0155] Example 9

[0156] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1-5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, specific reference is made to the steps and methods given in Example 2, and no further description is given here.

[0157] This example is a benzene contaminated site. After preliminary investigation, the benzene in the soil exceeds the Class II screening standard value for construction land (GB36600-2018), and the benzene in the groundwater exceeds the Class III quality standard for groundwater (GB14848-2017). Microbial technology is required for remediation. The contaminated area to be remediated is about 1,600 square meters, the contamination depth is 4 to 7 meters, and it is distributed in the clay layer.

[0158] According to the situation of the target pollutants, in steps 1-5, this remediation adopts in-situ injection of bacterial liquid remediation agent (bacterial liquid OD500>2, nutrient solution mass ratio>15%); a high-precision detailed investigation of pollution distribution is carried out according to the 10m×10m grid, and the IDW inverse distance interpolation method of GMS software is used to construct a three-dimensional pollution spatial distribution model. The volume of soil with excessive pollution in the model is 3284m 3 , export .sol format entity model data; in this embodiment, there is only one type of soil in the contaminated space, and there is no need to build a three-dimensional stratigraphic model containing soil type information; obtain the optimal injection parameters for silty clay type: injection pressure 0.6MPa, injection rate 18L / min, influence radius 2.8m; optimize the arrangement of injection points, and arrange a total of 53 injection points; use numerical integration to estimate the total amount of solidification / stabilization agent required to be 328t. In step 9, the remediation effect evaluation shows that the benzene concentration in the soil reaches the remediation target.

[0159] In this embodiment, if the conventional injection is performed, the addition ratio of the bacterial solution to the contaminated soil is calculated as 5%, and the required dosage is about 480t. By adopting the intelligent and precise injection technology method of site pollution control agents driven by a three-dimensional spatial model in this embodiment, the required dosage is 328t, which can be reduced by 32%. In addition, the bacterial solution remediation agent can be accurately injected into the target contaminated space for remediation through the three-dimensional spatial distribution model of the pollution, avoiding ineffective injection into non-polluted or low-polluted spaces.

[0160] Example 10

[0161] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1-5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, specific reference is made to the steps and methods given in Example 2, and no further description is given here.

[0162] This example is a heavy metal hexavalent chromium contaminated site. After preliminary investigation and risk assessment, the hexavalent chromium in the soil and groundwater poses a greater risk to human health and requires in-situ chromium metal reduction treatment. The contaminated area to be repaired is about 319 square meters, the maximum contamination depth is 13 meters, and the soil types at the contaminated depth are silt sand and silty clay.

[0163] According to the situation of the target pollutants, in steps 1-5, this remediation adopts the in-situ reducing agent ferrous sulfate (mass fraction of 40%); a high-precision detailed investigation of pollution distribution is carried out according to the 10m×10m grid, and the IDW inverse distance interpolation method of GMS software is used to construct a three-dimensional pollution spatial distribution model. The amount of earthwork exceeding the pollution standard in the model is 527m 3 , export .sol format entity model data; construct a three-dimensional stratigraphic model containing soil type information, divide the plot into 4 parts according to the soil type, and export .sol format entity model data; obtain the optimal injection parameters for different soil types: 0.5MPa injection pressure, 22L / min injection rate, 3.4m impact radius for silt sand, 1.5MPa injection pressure, 14L / min injection rate, 2.8m impact radius for silt clay; optimize the arrangement of injection points, and arrange 11 injection points in total; use numerical integration to estimate the total amount of reducing agent required to be 39t. In step 9, the remediation effect evaluation shows that the hexavalent chromium in the soil has reached the remediation target.

[0164] In this embodiment, if the injection is performed conventionally, the dosage ratio of the agent to the contaminated soil is calculated based on 3% ferrous sulfate, and the required amount of the agent is about 86 tons. By adopting a technical method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model in this embodiment, the required amount of the agent is 39 tons, which can be reduced by 55%. Moreover, the hexavalent chromium reducing agent can be accurately injected into the target contaminated space for repair through the three-dimensional spatial distribution model of the pollution, thereby avoiding ineffective injection into non-polluted or low-polluted space.

[0165] Embodiment 11

[0166] This embodiment provides a method for intelligent and precise injection of site pollution control agents driven by a three-dimensional spatial model, and provides implementation scenarios of specific parameters and agent dosages in steps 1-5 and step 9. For other steps and model and equation construction calculations not described in this embodiment, specific reference is made to the steps and methods given in Example 2, and no further description is given here.

[0167] This embodiment is a contaminated plot of land in a solid waste landfill. The solid waste in the landfill has been cleared and processed, and backfilled with miscellaneous fill soil. Later, it was found that there was organic composite pollution about 1 to 3 meters thick in the original bottom pit stratum. The pollution layer was distributed in a funnel shape. The main pollutants included toluene, styrene, nitrobenzene, etc. The landfill area was about 900 square meters, with a maximum depth of 6 meters. The contaminated stratum was treated with reference to the clay layer.

[0168] According to the situation of the target pollutants, in steps 1-5, this remediation adopts the in-situ injection of sodium persulfate type remediation solution (NaS O 8 The pollution distribution was investigated in detail with high precision according to the 10m×10m grid, and the IDW inverse distance interpolation method of GMS software was used to construct a three-dimensional pollution spatial distribution model. The amount of earthwork that exceeded the pollution standard in the model was 418m 3 , the contaminated space is a typical funnel-shaped non-uniform spatial distribution, the backfill soil inside the funnel is uncontaminated, and the .sol format entity model data is exported; in this embodiment, there is only one type of soil in the contaminated space, and there is no need to build a three-dimensional stratigraphic model containing soil type information; the optimal injection parameters for clay soil types are obtained: injection pressure 3.2MPa, injection rate 9L / min, and influence radius 1.3m; the injection points are optimized and arranged, and a total of 47 injection points are arranged; the total amount of sodium persulfate required is estimated to be 28t by numerical integration. In step 9, the remediation effect evaluation shows that toluene, styrene, and nitrobenzene in the soil and groundwater have reached the remediation target values.

[0169] In this embodiment, if conventional injection is performed, the dosage ratio of the agent to the contaminated soil is calculated as 3%, and the required amount of the agent is 67t. The intelligent and precise injection technology method of the site pollution control agent driven by the three-dimensional spatial model in this embodiment is adopted, and the required amount of the agent is 28t, which can be reduced by 58%. Moreover, the sodium persulfate agent can be accurately injected into the target contaminated space for repair through the three-dimensional spatial distribution model of the pollution, thereby avoiding the ineffective injection of the non-polluted or low-polluted space of the backfill soil in the middle and upper part of the funnel.

[0170] Example 12

[0171] Figure 4 FIG. 1 is a block diagram of a site pollution control agent injection system provided by an embodiment of the present invention. Figure 4 As shown, an embodiment of the present invention provides a site pollution control agent injection system, comprising:

[0172] An in-situ injection agent determination module is used to determine the in-situ injection agent to be taken and the fluid properties of the in-situ injection agent based on the predetermined data of the contaminated site to be treated;

[0173] A model building module is used to build a three-dimensional site model based on the pre-acquired pollution distribution data and geological exploration borehole data; wherein the three-dimensional site model includes a three-dimensional pollution spatial distribution model and a three-dimensional stratum model;

[0174] The optimal injection parameter determination module is used to obtain the optimal injection parameters for different soil types through particle fluid simulation based on soil type data and fluid properties of the in-situ injection agent;

[0175] The injection point layout module is used to layout the injection points in the three-dimensional site model based on the optimal injection parameters of different soil types, and obtain the injection point vector map;

[0176] The reagent injection scheme generation module is used to generate a reagent injection scheme driven by a three-dimensional site model based on the three-dimensional pollution spatial distribution model, the three-dimensional stratum model, the optimal injection parameters of different soil types, the injection point vector point map and the reagent injection association equation;

[0177] A reagent injection plan execution module is used to import the reagent injection plan into the injection equipment control system to execute the site remediation reagent injection;

[0178] The pollutant remediation monitoring module is used to obtain the site pollutant remediation results after the injection of the agent. When the site pollutant remediation results do not meet the preset standards, the three-dimensional site model is updated based on the current site, and the above steps are repeated until the site pollutant remediation results meet the preset standards.

[0179] Specifically, the system determines the in-situ injection agent to be taken based on the target pollutants in the data of the contaminated site to be treated, and obtains the fluid properties of the in-situ injection agent. Based on the pollution distribution data and geological exploration hole data, a three-dimensional pollution spatial distribution model and a three-dimensional formation model are obtained through software interpolation modeling. Based on the soil type and the properties of the injected agent, the optimal injection parameters for different soil types are obtained by numerical simulation of the agent jet injection of different soil types through particle fluid simulation. Based on the optimal injection parameters of different soil types, the injection points are arranged in the three-dimensional site model to obtain the injection point vector point map to optimize the arrangement of the injection points. According to the three-dimensional pollution spatial distribution model, the three-dimensional formation model, the optimal injection parameters of different soil types, the injection point vector point map and the agent injection association equation, a three-dimensional model-driven agent injection plan is generated. The agent injection scheme is imported into the injection equipment control system to drive the injection equipment to automatically adjust the opening and closing of the jet nozzle and the injection volume according to the data of the pollution space distribution, and automatically retrieve and adjust the injection parameters of the agent according to the soil type data of the stratum, so as to ensure the consistency of the agent injection target space and the pollution space distribution, avoid blind injection in underground non-polluted areas or low-polluted areas, thereby improving the intelligent and precise control of agent injection and reducing the consumption of agents. Finally, based on the site pollutant remediation results of the current site, it is determined whether to update the three-dimensional site model and whether to generate a new agent injection scheme for agent injection again, so that the site pollutant remediation results meet the preset standards, thereby achieving the purpose of accurately describing the site characteristics and injection remediation design, and then optimizing the injection design, improving the remediation effect and reducing the remediation cost.

[0180] Example 13

[0181] An embodiment of the present invention provides a machine-readable storage medium having instructions stored thereon. When the instructions are executed by the processor 100, the processor 100 is configured to execute the above-mentioned site pollution control agent injection method.

[0182] Machine-readable storage media include permanent and non-permanent, removable and non-removable media, and can be implemented by any method or technology to store information. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0183] The embodiment of the present invention further provides an electronic device 10, which includes a memory 101, a processor 100, and a computer program 102 stored in the memory 101 and executable on the processor 100. When the processor 100 executes the computer program 102, the above-mentioned site pollution control agent injection method is implemented.

[0184] like Figure 5 FIG. 1 is a schematic diagram of an electronic device provided by an embodiment of the present invention. Figure 5 As shown, the electronic device 10 of this embodiment includes: a processor 100, a memory 101, and a computer program 102 stored in the memory 101 and executable on the processor 100. When the processor 100 executes the computer program 102, the steps in the above method embodiment are implemented. Alternatively, when the processor 100 executes the computer program 102, the functions of each module / unit in the above device embodiment are implemented.

[0185] Exemplarily, the computer program 102 may be divided into one or more modules / units, one or more modules / units are stored in the memory 101, and are executed by the processor 100 to complete the present invention. One or more modules / units may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program 102 in the electronic device 10. For example, the computer program 102 may be divided into an in-situ injection agent determination module, a model building module, an optimal injection parameter determination module, an injection point layout module, an agent injection plan generation module, an agent injection plan execution module, and a pollutant remediation monitoring module.

[0186] The electronic device 10 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device 10 may include, but is not limited to, a processor 100 and a memory 101. Those skilled in the art will appreciate that Figure 5 It is only an example of the electronic device 10 and does not constitute a limitation of the electronic device 10. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0187] The processor 100 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0188] The memory 101 may be an internal storage unit of the electronic device 10, such as a hard disk or memory of the electronic device 10. The memory 101 may also be an external storage device of the electronic device 10, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 10. Further, the memory 101 may also include both an internal storage unit of the electronic device 10 and an external storage device. The memory 101 is used to store computer programs and other programs and data required by the electronic device 10. The memory 101 may also be used to temporarily store data that has been output or is to be output.

[0189] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0190] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program 102 products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program 102 product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0191] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program 102 products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by the computer program 102 instructions. These computer program 102 instructions can be provided to a processor 100 of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor 100 of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0192] These computer program 102 instructions may also be stored in a computer readable memory 101 that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory 101 produce an article of manufacture including an instruction device that implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0193] These computer program 102 instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0194] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0195] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for injecting a site pollution control agent, It is characterized in that include: Based on the predetermined data of the contaminated site to be treated, determine the in-situ injection agent and the fluid properties of the in-situ injection agent; Based on the pre-acquired pollution distribution data and geological exploration borehole data, a three-dimensional site model is constructed; wherein the three-dimensional site model includes a three-dimensional pollution spatial distribution model and a three-dimensional stratum model; Based on the soil type data and the fluid properties of the in-situ injection agent, the optimal injection parameters for different soil types are obtained through particle fluid simulation; Based on the optimal injection parameters of different soil types, injection points are arranged in the three-dimensional site model to obtain a vector point map of injection points; Generate a reagent injection plan driven by a three-dimensional site model based on the three-dimensional pollution spatial distribution model, three-dimensional stratum model, optimal injection parameters for different soil types, injection point vector map and reagent injection correlation equation; Importing the agent injection plan into the injection equipment control system to execute the site remediation agent injection; Obtain the site pollutant remediation result after the injection of the agent. When the site pollutant remediation result does not meet the preset standard, update the three-dimensional site model based on the current site, and repeat the above steps until the site pollutant remediation result meets the preset standard.

2. The method for injecting a site pollution control agent according to claim 1, It is characterized in that The step of importing the agent injection scheme into the injection equipment control system to perform site remediation agent injection includes: According to the drug injection scheme, a driving data packet is generated, and the driving data packet is introduced into the injection device; wherein, The injection device is configured to: Based on the driving data packet, a medicine injection scheme is obtained by parsing; Based on the agent injection scheme, the opening and closing of the jet nozzle and the agent injection amount are automatically adjusted according to the three-dimensional pollution space distribution model; Based on the reagent injection scheme, the reagent injection parameters are automatically adjusted according to the three-dimensional formation model.

3. The method for injecting a site pollution control agent according to claim 1, It is characterized in that The soil type data includes at least one or more of the soil's permeability coefficient, bulk density, porosity and organic matter content; the fluid properties of the in-situ injected agent include at least one or more of the fluidity, viscosity and particle size of the in-situ agent; and the injection parameters of the soil type include at least one or more of the injection pressure, injection speed, injection flow rate and influence radius.

4. The method for injecting a site pollution control agent according to claim 1, It is characterized in that Also includes: Determine the data of the contaminated site to be treated based on the initial site survey information; wherein the data of the contaminated site to be treated includes one or more of the pollutants, pollution scope and pollution degree of the contaminated site to be treated; Based on the initial site survey information, geological surveys and geotechnical drilling tests are carried out to obtain geological survey hole data and soil type data.

5. The method for injecting a site pollution control agent according to claim 1, It is characterized in that The construction process of the three-dimensional site model is as follows: Based on the initial site survey information, the pollution distribution survey is conducted using the grid division method to obtain pollution distribution data; Constructing a three-dimensional pollution spatial distribution model according to the pollution distribution data; A three-dimensional stratum model is constructed based on the geological exploration borehole data.

6. The method for injecting a site pollution control agent according to claim 5, It is characterized in that The method of constructing a three-dimensional pollution spatial distribution model includes one or more of a three-dimensional Kriging interpolation method, an inverse distance weighted interpolation method, and a nearest neighbor method.

7. The method for injecting a site pollution control agent according to claim 1, It is characterized in that The optimal injection parameters include an optimal influence radius; The optimal injection parameters based on different soil types are used to arrange injection points in the three-dimensional site model to obtain a vector point map of injection points, including: A1: two first injection points are arranged in any stratum of the three-dimensional site model, and the two first injection points are used as two circle centers to form two intersecting first circles in combination with the optimal influence radius; A2: Using the two first intersection points obtained by intersecting the two first circles, draw an external straight line passing through the two first intersection points; A3: Arranging a second injection point on the outer straight line; wherein a second circle formed with the second injection point as the center and the optimal influence radius intersects with the first intersection point; A4: using two second intersection points formed by the intersection of the second circle and any circle currently existing in the formation, drawing a new outer straight line passing through the two second intersection points, and arranging a new second injection point on the new outer straight line; A5: Based on the new second injection point, a new second circle is obtained; A6: Repeat A4 to A5 until the stratum is traversed; A7: Repeat A1 to A7 until all strata of the three-dimensional site model are traversed to obtain a vector point map of injection points.

8. The method for injecting a site pollution control agent according to claim 1, It is characterized in that The construction rules of the drug injection correlation equation are as follows: Theoretical calculation method and / or small-scale test method are used to construct the chemical injection correlation equation for each soil type; wherein the theoretical calculation method calculates the chemical consumption based on the equations or ratios of physical reactions, chemical reactions and biological reactions, and the small-scale test method calculates the chemical consumption based on the laboratory gradient test.

9. The method for injecting a site pollution control agent according to claim 1, It is characterized in that The agent injection correlation equation includes a pollution concentration agent injection correlation equation, an agent consumption integral equation and an injection time control equation; Among them, the correlation equation of pollution concentration and agent injection is C 药剂 =C 污染 ×k 1 +C 有机 ×k 2 +C 其他 ×k 3 , the integral equation of drug consumption is M 药剂 =δ×β×∫C 药剂 dv, injection time control equation is T = M 药剂 / υ; among them, C 药剂 is the concentration of the agent to be injected into the soil, C 污染 is the concentration of pollutants in the soil, C 有机 is the concentration of organic matter in the soil, C 其他 is the concentration of reducing ions in the soil, M 药剂 is the injection volume of soil agent solution, k 1 , k 2 and k 3 is the coefficient of variation of the agent consumption with the concentration of the corresponding substance, δ is the agent safety margin coefficient, β is the proportional coefficient of the agent solution, T is the injection time of the agent solution per unit volume of soil, and υ is the injection rate of the agent solution.

10. The method for injecting a site pollution control agent according to claim 1, It is characterized in that Also includes: The online monitoring method of groundwater pollution and the soil drilling sampling detection method are combined to monitor and evaluate the site pollutants after the injection of the agent to obtain the site pollutant remediation results.

11. The method for injecting a site pollution control agent according to claim 10, It is characterized in that The method of combining the online groundwater pollution monitoring method and the soil drilling sampling detection method to monitor and evaluate the site pollutants after the injection of the agent includes: The monitoring wells are evenly arranged according to the preset grid size data; wherein the monitoring wells are used to detect various indicators of site pollutants; Based on the index monitoring data obtained from the monitoring wells, the variation error of the pollutants on the site within the preset time period is obtained; When the variation error is less than a preset threshold, a soil drilling sampling detection method is used for monitoring and evaluation.

12. A site pollution control agent injection system, It is characterized in that include: An in-situ injection agent determination module is used to determine the in-situ injection agent to be taken and the fluid properties of the in-situ injection agent based on the predetermined data of the contaminated site to be treated; A model building module, used to build a three-dimensional site model based on the pre-acquired pollution distribution data and geological exploration borehole data; wherein the three-dimensional site model includes a three-dimensional pollution spatial distribution model and a three-dimensional stratum model; The optimal injection parameter determination module is used to obtain the optimal injection parameters for different soil types through particle fluid simulation based on soil type data and fluid properties of the in-situ injection agent; An injection point layout module is used to layout injection points in the three-dimensional site model based on optimal injection parameters of different soil types to obtain a vector point map of injection points; The reagent injection scheme generation module is used to generate a reagent injection scheme driven by a three-dimensional site model based on the three-dimensional pollution spatial distribution model, the three-dimensional stratum model, the optimal injection parameters of different soil types, the injection point vector point map and the reagent injection association equation; A reagent injection plan execution module is used to import the reagent injection plan into the injection equipment control system to execute the site remediation reagent injection; The pollutant remediation monitoring module is used to obtain the site pollutant remediation results after the injection of the agent. When the site pollutant remediation results do not meet the preset standards, the three-dimensional site model is updated based on the current site, and the above steps are repeated until the site pollutant remediation results meet the preset standards.

13. A machine-readable storage medium having instructions stored thereon, It is characterized in that When the instruction is executed by a processor, the processor is configured to execute the site pollution control agent injection method as described in any one of claims 1 to 11.

14. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, It is characterized in that When the processor executes the computer program, the site pollution control agent injection method according to any one of claims 1 to 11 is implemented.

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