A quick isolation anti-infiltration device and method while drilling, measuring and injecting

Abstract

The present application relates to the technical fields of environmental protection, and particularly relates to a quick blocking and anti-seepage equipment and method for drilling, measuring and injecting simultaneously, which comprises a multifunctional platform and an integrated hydraulic drilling machine module; the multifunctional platform further comprises an injection unit, a control unit and a detection unit; the hydraulic drilling machine module comprises a drilling machine and a drill pipe, the drilling machine drives the drill pipe to penetrate into a stratum; the hollow drill pipe is integrated with a hydraulic profile detection section, a blocking and control injection section, a groundwater sampling section and an EC detection section; the hydraulic profile detection section and the EC detection section monitor the hydraulic penetrability and the conductivity of soil in situ; the groundwater sampling section synchronously collects groundwater samples; the detection unit rapidly detects the groundwater samples in situ; the control unit collects, analyzes, monitors and detects data, simulates pollution conditions, and identifies a blocking and control range; the injection unit injects blocking and control materials into the soil layer through the blocking and control injection section. The present application in-situ identifies pollution conditions, formulates a risk blocking and control range, and rapidly realizes the best blocking and control effect.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, and in particular to a rapid barrier and seepage prevention device and method for drilling, testing and injection at point-contaminated sites. Background Technology

[0002] Currently, sudden environmental accidents caused by leaks of toxic and hazardous substances occur frequently, leading to rapid deterioration of the soil and groundwater environment at the site. Furthermore, the soil and groundwater conditions in industrial clusters are also concerning. Both the accidents and the contamination in industrial clusters exhibit a point-like distribution. The most critical aspect of handling such contaminated sites is the need for efficient and rapid response to prevent the spread of pollutants. Therefore, there is an urgent need to develop efficient and rapid containment and treatment technologies. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a rapid barrier and seepage prevention device and method for drilling, testing, and injection at point-contaminated sites. This method enables in-situ real-time monitoring of the hydraulic permeability and electrical conductivity of the soil while the drilling rig is running, simultaneous collection and on-site analysis of groundwater samples, identification of risk areas, simulation of the contamination range, formulation of barrier control schemes, precise control of the injection pressure and injection volume of barrier control materials, and rapid achievement of the best barrier control effect.

[0004] The technical solution of the present invention is a rapid barrier and seepage prevention device and method for drilling, testing and injection, comprising a multi-functional platform and a hydraulic drilling rig module integrated on the multi-functional platform;

[0005] The multi-functional platform also includes an injection unit, a control unit, and a detection unit;

[0006] The hydraulic drilling rig module includes a drilling rig and a drill rod. The drilling rig drives the drill rod to penetrate into the lower layers. The drill rod is a hollow carbon steel drill rod, and its length can be adjusted through a threaded connection. The bottom end of the drill rod integrates a hydraulic profile detection section, a resistance-controlled injection section, a groundwater sampling section, and an EC detection section. The four functional sections are detachably connected by threads.

[0007] The hydraulic profile detection section monitors the hydraulic permeability of the soil in situ in real time and feeds the data back to the control unit via a wire.

[0008] The EC probe section monitors the electrical conductivity of the soil in situ in real time and feeds it back to the control unit via wires.

[0009] Groundwater samples are collected simultaneously at the groundwater sampling section and transported to the detection unit via a peristaltic pump;

[0010] The control injection section injects control material into the soil layer;

[0011] The detection unit on the multi-functional platform can quickly analyze and detect the collected groundwater samples on-site and transmit the detection data to the control unit;

[0012] The control unit on the multi-functional platform receives and processes groundwater detection data, in-situ monitoring of soil hydraulic penetration and electrical conductivity, simulates pollution diffusion through built-in models, and determines the control range and depth.

[0013] The injection unit on the multi-functional platform is connected to the drill rod via an injection pipe. It injects the control material into the soil layer through the pre-set injection hole on the drill rod and controls the injection pressure and injection volume of the control material.

[0014] Preferably, the hydraulic profile detection section of the drill pipe is equipped with a hydraulic penetration detection probe and a control switch; the hydraulic penetration detection probe is electrically connected to the detection unit on the multi-functional platform via a wire, and the monitoring results are fed back to the control unit of the multi-functional platform in real time; the control unit controls the switch to turn on and off.

[0015] Preferably, two injection holes are provided at the bottom end of the drill pipe resistance injection section, one end of the injection tube is connected to the injection hole, and the other end of the injection tube is connected to the injection unit of the multi-functional platform.

[0016] Preferably, the groundwater sampling section of the drill rod is equipped with a water inlet hole. The outer surface of the sampling section is wrapped with stainless steel wire at a 45° angle to cover the water inlet hole, with gaps less than 0.1 mm. It is equipped with a Teflon hose and connected to the detection unit through a ground peristaltic pump.

[0017] Preferably, the EC detection section of the drill pipe is equipped with an EC detection probe and a switch; the EC detection probe is electrically connected to the control unit on the multi-functional platform via a wire and provides real-time monitoring data; the control unit controls the switch to turn on and off.

[0018] Preferably, a barrier layer is provided between the hydraulic profile detection section, the control injection section, the groundwater sampling section, and the EC detection section in the drill pipe for isolation.

[0019] Preferably, the permeability coefficient of underground soil is measured in the range of 0.03048 m / d to 45.72 m / d.

[0020] A rapid resistance control method with real-time feedback during drilling, testing, and injection includes the following specific steps:

[0021] S1. While the drilling rig is drilling, it monitors the hydraulic penetration and electrical conductivity of the soil in situ in real time through the hydraulic profile detection section and the EC detection section, and feeds the data back to the control unit on the multi-functional platform in real time through the wire.

[0022] S2. While the drilling rig is running down, groundwater samples are collected and synchronously transferred to the detection unit on the multi-functional platform via a peristaltic pump for rapid on-site detection. The detection data is then fed back to the control unit of the multi-functional platform in real time.

[0023] The S3 multi-functional platform's control unit analyzes the collected monitoring and detection data, simulates pollution conditions through built-in models, and generates control range and barrier depth.

[0024] S4. The injection unit controls the injection pressure and injection volume of the barrier material; the barrier material is injected into the underground soil through the barrier injection section.

[0025] S5, the hydraulic profile detection section and the groundwater sampling section monitor and provide feedback on the operation progress in real time; the control unit precisely controls the operation of the injection unit according to the feedback data transmission instructions until the control work is completed.

[0026] Preferably, the multi-functional platform is a tracked mobile platform.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects:

[0028] The present invention provides a rapid barrier and seepage prevention device and method for drilling, testing, and injection, which integrates a hydraulic profile detection section, a barrier injection section, a groundwater sampling section, and an EC detection section on a hollow drill rod. Correspondingly, an injection unit, a control unit, and a detection unit are integrated on a multi-functional platform. When dealing with point-source contaminants, groundwater is collected continuously while the drilling rig is running for rapid on-site detection to determine the spread of contaminants. During drilling, the hydraulic permeability and electrical conductivity of the underground soil are monitored in real time to quickly determine the barrier range and depth, accurately control the injection pressure and injection volume of the barrier material, and quickly achieve the best barrier control effect.

[0029] Compared with existing technologies, this invention enables rapid on-site detection of groundwater pollution without the need for sampling and laboratory testing, and simulates the pollution diffusion situation on-site; it can monitor soil hydraulic penetration and electrical conductivity in real time in situ, quickly identify the control range and depth, and quickly add control materials after measuring the parameters to achieve the purpose of rapid control. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the rapid barrier and seepage prevention device for drilling, testing and injection according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the drill pipe structure in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the drill pipe in an embodiment of the present invention;

[0033] Figure 4 This is a flowchart of the rapid barrier and seepage prevention method of Embodiment 2 of the present invention.

[0034] Reference numerals: 1. Injection unit; 2. Control unit; 3. Detection unit; 4. Drill rod; 5. Hydraulic profile detection section; 6. Barrier-controlled injection section; 7. Groundwater sampling section; 8. EC detection section; 9. Hydraulic penetration detection probe; 10. Control switch; 11. Barrier layer; 12. Injection tube; 13. Injection hole; 14. Water pipe; 15. Screen tube; 16. Stainless steel wire mesh; 17. EC detection probe. Detailed Implementation

[0035] Example 1

[0036] like Figure 1-3 As shown, the present invention proposes a rapid barrier seepage prevention device for drilling, testing and injection, which includes a multi-functional platform and a hydraulic drilling rig module integrated on the multi-functional platform.

[0037] The multi-functional platform also includes an injection unit 1, a control unit 2, and a detection unit 3;

[0038] The hydraulic drilling rig module includes a drilling rig and a drill rod 4. The drilling rig drives the drill rod 4 to penetrate into the lower layers. The drill rod 4 is a hollow drill rod 4. The hollow drill rod 4 integrates a hydraulic profile detection section 5, a resistance-controlled injection section 6, a groundwater sampling section 7, and an EC detection section 8.

[0039] In response to a pollution leak at a chemical industrial park in Jiangsu Province, the rapid containment equipment of this invention was used. The hydraulic profile detection section 5 monitors and provides real-time feedback on the hydraulic permeability of the soil in situ, identifying an impermeable stratum with a depth of approximately 3.3m; and quickly determining the type and extent of point pollutants.

[0040] Groundwater sampling section 7 sampled groundwater beneath the soil layer and conducted rapid on-site analysis and testing, identifying the characteristic pollutant as VOCs (chlorobenzene). EC detection section 8 monitored soil conductivity in real-time in situ, and combined with a pollution distribution model, simulated a pollution area of ​​approximately 85 square meters, with a maximum pollution depth of about 1.5 meters. Taking into account the on-site hydrogeological conditions and construction interface, a risk control zone with a perimeter of 78 meters and a depth of approximately 4.3 meters was quickly determined.

[0041] The injection unit 1 on the multi-functional platform is connected to the drill rod 4 through the injection pipe. A 1:1 water-cement ratio cement slurry is injected into the soil layer through the preset injection hole on the drill rod 4 as a barrier material. The injection pressure of the barrier material is controlled at 20-30mPa and the injection volume is about 200-220kg / m.

[0042] During the barrier material injection process, the EC detection probe 17 and the water penetration detection probe 9 integrated on the drill rod 4 monitor the water penetration and conductivity of the soil in situ in real time, and feed the data back to the control unit 2 of the multi-functional platform. The control unit 2 controls the injection volume and injection pressure of the barrier injection section 6 in real time based on the feedback data, so as to quickly achieve the best barrier control effect.

[0043] In this embodiment, it took 6 days from receiving the emergency response notification to completing all the containment work. Compared with the traditional sampling, laboratory testing, data analysis, plan formulation, and containment construction process, it saves more than 30 days, effectively reduces the spread of pollutants, and improves the environmental emergency containment capabilities.

[0044] Example 2

[0045] This invention proposes a rapid barrier and seepage prevention method that involves drilling, testing, and injection, comprising the following specific steps:

[0046] S1. During drilling, the hydraulic permeability and electrical conductivity of the soil were monitored in situ and fed back in real time to the control unit 2 on the multi-functional platform via wires. This determined that the depth of the barrier layer 11 was approximately 4.1 meters and identified the risk area. Groundwater samples collected from groundwater sampling section 7 were rapidly analyzed on-site, confirming that the characteristic pollutant was Cr. 6+ The simulated pollutant diffusion range was approximately 77 square meters, and the pollution depth was approximately 1.1 meters.

[0047] S2 and Control Unit 2 can quickly provide on-site recommendations for a risk control range with a perimeter of approximately 44 meters and a depth of approximately 5.1 meters.

[0048] S3 and control unit 2 control the injection pressure and injection volume of the barrier material; inject 1:1 water-cement ratio cement slurry into the underground soil as barrier material through barrier injection section 6, and control the injection pressure of the barrier material to be 20-30mPa and the injection volume to be about 200-220kg / m.

[0049] S4, hydraulic profile detection section 5 and EC detection section 8 monitor and provide feedback on the operation progress in situ in real time to determine whether the control depth has reached the barrier layer 11; control unit 2 accurately controls the amount of reagent added according to the feedback data until the control work is completed.

[0050] S5. In this implementation case, it took 5 days from receiving the notification to completing all the containment work. Compared with the traditional sampling, laboratory testing, data analysis, plan formulation, and containment construction process, it saved more than 30 days, effectively reduced the spread of pollutants, and timely controlled environmental risks.

[0051] Preferably, the multi-functional platform is a tracked mobile platform.

[0052] In this embodiment, the multi-functional platform is a tracked mobile platform that can be moved to a designated location as needed for convenient operation. Furthermore, while injection is being performed in the injection section, the water permeability and electrical conductivity of the soil are continuously monitored in situ in real time to control the injection dosage and pressure of the resistance material until the preset parameters are reached, thus completing the resistance control operation.

[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A rapid barrier and seepage prevention device for drilling, testing, and injection, characterized in that, Includes a multi-functional platform and a hydraulic drilling rig module integrated on the multi-functional platform; The multi-functional platform also includes an injection unit, a control unit, and a detection unit; The hydraulic drilling rig module includes a drilling rig and a drill rod. The drilling rig drives the drill rod to penetrate deep into the formation. The drill rod is a hollow carbon steel drill rod, and its length can be adjusted through a threaded connection. From top to bottom, the bottom of the drill rod integrates a hydraulic profiling section, a control injection section, a groundwater sampling section, and an EC detection section. The four functional sections are detachably connected by threads. The hydraulic profiling section, control injection section, groundwater sampling section, and EC detection section in the drill rod are connected by threads and are all equipped with barrier layers for isolation. Two injection holes are set at the bottom of the drill rod resistance injection section. One end of the injection tube is connected to the injection hole, and the other end of the injection tube is connected to the injection unit of the multi-functional platform. The groundwater sampling section of the drill rod is equipped with a water inlet. The outer surface of the sampling section is wrapped with stainless steel wire at a 45° angle with cross-wound. The sieve gap is less than 0.1mm. It has a built-in Teflon hose and is connected to the detection unit through a ground peristaltic pump. The hydraulic profile detection section monitors the hydraulic permeability of the soil in situ in real time and feeds the data back to the control unit via a wire. The EC probe section monitors the electrical conductivity of the soil in situ in real time and feeds it back to the control unit via wires. Groundwater samples are collected simultaneously at the groundwater sampling section and transported to the detection unit via a peristaltic pump; The detection unit on the multi-functional platform can quickly analyze and detect the collected groundwater samples on-site and transmit the detection data to the control unit; The control unit on the multi-functional platform analyzes monitoring and detection data, identifies risk areas, simulates pollution diffusion, and determines the optimal control range and depth. The injection unit on the multi-functional platform is connected to the drill rod through an injection pipe. It injects the control material into the soil layer through the injection hole of the control injection section and controls the injection pressure and injection volume of the control material.

2. The rapid barrier and seepage prevention device for drilling, testing, and injection as described in claim 1, characterized in that: The hydraulic profile detection section of the drill pipe is equipped with a hydraulic penetration detection probe and a control switch; the hydraulic penetration detection probe is connected to the control unit on the multi-functional platform via a wire to provide real-time feedback of monitoring results; The control unit on the multi-functional platform controls the switch to be turned on and off.

3. The rapid barrier and seepage prevention device for drilling, testing, and injection as described in claim 1, characterized in that: The EC detection section of the drill pipe is equipped with an EC detection probe and a switch; the EC detection probe is electrically connected to the control unit on the multi-functional platform via a wire and provides real-time monitoring data feedback. The control unit on the multi-functional platform controls the switch to be turned on and off.

4. The rapid barrier and seepage prevention device for drilling, testing, and injection as described in claim 1, characterized in that: The permeability coefficient of underground soil was measured in the range of 0.03048 m / d to 45.72 m / d.

5. A rapid barrier seepage prevention method that involves drilling, testing, and injection simultaneously, using the rapid barrier seepage prevention equipment described in any one of claims 1-4 for rapid barrier control, characterized in that: The specific steps include the following: S1. While the drilling rig is drilling, it monitors the hydraulic penetration and electrical conductivity of the soil in situ in real time through the hydraulic profile detection section and the EC detection section, and feeds the data back to the control unit on the multi-functional platform in real time through the wire. S2. While the drilling rig is running down, groundwater samples are collected and synchronously transferred to the detection unit on the multi-functional platform via a peristaltic pump for rapid on-site detection. The detection data is then fed back to the control unit of the multi-functional platform in real time. The S3 multi-functional platform's control unit analyzes the collected monitoring and detection data, simulates pollution conditions through built-in models, and generates control range and barrier depth. S4. The injection unit controls the injection pressure and injection volume of the barrier material; the barrier material is injected into the underground soil through the barrier injection section. S5, the hydraulic profile detection section and the groundwater sampling section monitor and provide feedback on the operation progress in real time; the control unit precisely controls the operation of the injection unit according to the feedback data transmission instructions until the control work is completed.

6. The rapid barrier and seepage prevention method based on drilling, testing, and injection as described in claim 5, characterized in that: The multi-functional platform is a tracked mobile platform.

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