A ground settlement reduction structure for pipe jacking project roadbed and pavement and its monitoring method

Abstract

The present invention relates to a jacking pipe project roadbed and pavement subsidence reduction structure and its monitoring method, belonging to the technical field of subsidence reduction structures, including: a solid hollow steel pipe, a steel reinforcement cage sleeved with the solid hollow steel pipe, and a grouting filling layer. The steel reinforcement cage includes a number of fixing rings arranged in a linear array. A number of steel bars arranged in a circumferential array are installed on the circumference of the fixing ring to form the steel reinforcement cage. A number of grouting holes are provided on the solid hollow steel pipe. By injecting grouting materials into the grouting holes, grouting filling is formed, and a pipe shed structure is formed by the solid hollow steel pipe and the steel reinforcement cage. The present invention proposes a jacking pipe project roadbed and pavement subsidence reduction structure to control the settlement of the roadbed and pavement during and after construction and ensure road traffic safety. Secondly, the present invention fully considers the occurrence probability of settlement events under different geological data, thereby further optimizing the layout of the jacking pipe project roadbed and pavement subsidence reduction structure and improving the layout rationality of preventing settlement events.

Description

Technical Field

[0001] The present invention relates to the technical field of subsidence reduction structures, and particularly to a subsidence reduction structure for a roadbed and road surface in a pipe jacking project and a monitoring method therefor. Background Art

[0002] The pipe jacking construction method is the most widely used and important engineering technology in the non-excavation construction of underground projects at present. It has the advantages of less construction floor area, no impact on ground traffic, less demolition of buildings and structures, low operation noise, and less environmental pollution. However, during the construction process, it is easy to cause phenomena such as roadbed settlement, surface cracking, and pavement voiding, and the post-construction road settlement is uneven, resulting in traffic safety problems on the road. In severe cases, it can endanger the safety of underground engineering structures, especially in special soil strata. Soil deformation has a spatio-temporal effect and is lagging. Soil deformation may exhibit different characteristics due to different geological conditions, stress states, environmental factors, etc. This means that some impacts or changes caused by pipe jacking construction may not appear immediately, but gradually appear after a period of time. Under different time and space conditions, the characteristics and control methods of soil deformation are different. To control the settlement during pipe jacking construction, the most conventional method is to control the inflow and outflow of water and the head earth pressure during pipe jacking tunneling, control the amount of soil excavation. For soil layers that may liquefy, in addition to the above-mentioned measures, thixotropic mud should be appropriately added to reduce the impact on the soil. However, such measures are uncontrollable and require high requirements for operators and managers, and do not adapt to the current market environment and social development situation. For the settlement after pipe jacking construction, the most conventional method is to use grouting measures to fill the over-excavated voids outside the pipe after the pipe jacking is completed. However, limited by the narrow space inside the pipe, there are very few reinforcement methods inside the pipe, and the number of grouting holes on the pipe is small, resulting in difficult inspection of the grouting filling effect inside the pipe and difficult to solve the road settlement problem. Before pipe jacking construction, ground reinforcement is used to reinforce the strata around the pipe jacking, which is costly. Limited by conditions such as ground traffic, pipelines, and buildings and structures, it is very difficult to achieve ground reinforcement in most cases. Therefore, a subsidence reduction structure for a roadbed and road surface in a pipe jacking project is proposed to control the settlement of the roadbed and road surface during and after construction and ensure road traffic safety. Summary of the Invention

[0003] The present invention overcomes the deficiencies of the prior art and provides a subsidence reduction structure for a roadbed and road surface in a pipe jacking project and a monitoring method therefor.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] In a first aspect of the present invention, a subsidence reduction structure for a roadbed and road surface in a pipe jacking project is provided, including:

[0006] A solid hollow steel pipe, a steel reinforcement cage sleeved with the solid hollow steel pipe, and a grouting filling layer;

[0007] Among them, the steel reinforcement cage includes a number of fixing rings arranged in a linear array, and a number of steel bars arranged in a circumferential array are installed on the circumference of the fixing ring to form a steel reinforcement cage;

[0008] A number of grouting holes are provided on the solid hollow steel pipe. By injecting grouting materials into the grouting holes, grouting filling is formed, and the solid hollow steel pipe and the steel reinforcement cage form a pipe shed structure.

[0009] Furthermore, in the subgrade and pavement subsidence reduction structure of the pipe jacking project, the grouting materials include cement slurry, water glass solution and epoxy resin-based slurry.

[0010] Furthermore, in the subgrade and pavement subsidence reduction structure of the pipe jacking project, two adjacent pipe shed structures are connected by connecting steel pipes to form a subsidence reduction structure.

[0011] Furthermore, in the subgrade and pavement subsidence reduction structure of the pipe jacking project, the subsidence reduction structure is located on the outer circumference of the underground pipeline to be implemented.

[0012] The second aspect of the present invention provides a monitoring method for the subgrade and pavement subsidence reduction structure of a pipe jacking project, which is applied to any one of the subgrade and pavement subsidence reduction structures of the pipe jacking project, and includes the following steps:

[0013] By arranging sensors in the target area, a sensor monitoring network is constructed, and geological structure data information in the target area is obtained through the sensor monitoring network;

[0014] According to the geological structure data information in the target area, a prediction model for subgrade and pavement settlement events is constructed, and the probability of occurrence of predicted settlement events in the target area is estimated according to the prediction model for subgrade and pavement settlement events;

[0015] According to the probability of occurrence of the predicted settlement events in the target area, the subgrade and pavement subsidence reduction structure of the pipe jacking project is configured to obtain a configuration diagram of the subgrade and pavement subsidence reduction structure of the pipe jacking project;

[0016] Monitoring configuration is carried out according to the configuration diagram of the subgrade and pavement subsidence reduction structure of the pipe jacking project.

[0017] Furthermore, in the monitoring method for the subgrade and pavement subsidence reduction structure of the pipe jacking project, by arranging sensors in the target area, a sensor monitoring network is constructed, and geological structure data information in the target area is obtained through the sensor monitoring network, specifically:

[0018] By arranging sensors in the target area, a sensor network is constructed, and geological structure data information at the time of settlement events is obtained. The settlement events are used as one data node, and the data of the geological structure data type in each geological structure data information is used as another data node;

[0019] Construct a directed description relationship, connect the data nodes based on the directed description relationship to construct a topological structure diagram, store the topological structure diagram in a database, and obtain geological structure data information in the target area through the sensor network;

[0020] Input the geological structure data information in the target area into the database for data fitting, and calculate the frequency characteristics of the geological structure data information in the target area that is the same as the data node;

[0021] When the frequency characteristics of the geological structure data information in the target area that is the same as the data node are greater than the preset frequency characteristic threshold, increase the monitoring frequency of the current target area, and collect the geological structure data information in the target area according to the monitoring frequency of the current target area;

[0022] When the frequency characteristics of the geological structure data information in the target area that is the same as the data node are not greater than the preset frequency characteristic threshold, decrease the monitoring frequency of the current target area, and collect the geological structure data information in the target area according to the monitoring frequency of the current target area.

[0023] Furthermore, in the monitoring method of the roadbed and pavement subsidence reduction structure in the pipe jacking project, construct a roadbed and pavement settlement event prediction model according to the geological structure data information in the target area, specifically including:

[0024] Obtain the occurrence times of the roadbed and pavement settlement events and the occurrence times of the non-occurrence of the roadbed and pavement settlement events under the geological structure data information in the target area, and construct a roadbed and pavement settlement event prediction model based on a deep neural network;

[0025] Calculate the occurrence probability value of the roadbed and pavement settlement events under the geological structure data information in the target area according to the occurrence times of the roadbed and pavement settlement events and the occurrence times of the non-occurrence of the roadbed and pavement settlement events under the geological structure data information in the target area;

[0026] Construct an occurrence probability value feature matrix according to the occurrence probability value of the roadbed and pavement settlement events under the geological structure data information in the target area;

[0027] Input the occurrence probability value feature matrix into the occurrence probability value feature matrix for training to obtain a roadbed and pavement settlement event prediction model that meets the expectations.

[0028] Furthermore, in the monitoring method of the roadbed and pavement subsidence reduction structure in the pipe jacking project, estimate the occurrence probability of the predicted settlement event in the target area according to the roadbed and pavement settlement event prediction model, specifically including:

[0029] Obtain the geological structure data information in the target area, and input the geological structure data information in the target area into the roadbed and pavement settlement event prediction model for prediction;

[0030] Through prediction, obtain the estimated probability of settlement event occurrence in the target area, and output the estimated probability of settlement event occurrence in the target area.

[0031] Furthermore, in the monitoring method of the roadbed and pavement subsidence reduction structure of the pipe jacking project, configure the roadbed and pavement subsidence reduction structure of the pipe jacking project according to the estimated probability of settlement event occurrence in the target area, and obtain the configuration diagram of the roadbed and pavement subsidence reduction structure of the pipe jacking project, specifically including:

[0032] Obtain the estimated probability of settlement event occurrence in each sub-area of the target area according to the estimated probability of settlement event occurrence in the target area, and set the evaluation index threshold of the settlement event occurrence probability;

[0033] Judge whether the estimated probability of settlement event occurrence in each sub-area of the target area is greater than the evaluation index threshold of the settlement event occurrence probability;

[0034] When the estimated probability of settlement event occurrence is greater than the evaluation index threshold of the settlement event occurrence probability, then take the area corresponding to the estimated probability of settlement event occurrence greater than the evaluation index threshold of the settlement event occurrence probability as the area to be preferentially configured;

[0035] When the estimated probability of settlement event occurrence is not greater than the evaluation index threshold of the settlement event occurrence probability, take the area corresponding to the estimated probability of settlement event occurrence not greater than the evaluation index threshold of the settlement event occurrence probability as the area to be configured with secondary priority;

[0036] Conduct resource allocation according to the preferentially configured area and the area configured with secondary priority, and obtain the configuration diagram of the roadbed and pavement subsidence reduction structure of the pipe jacking project.

[0037] Furthermore, in the monitoring method of the roadbed and pavement subsidence reduction structure of the pipe jacking project, conduct monitoring configuration according to the configuration diagram of the roadbed and pavement subsidence reduction structure of the pipe jacking project, specifically including:

[0038] Obtain the configured resource data of the target area, introduce the genetic algorithm, set the number of genetic generations based on the genetic algorithm, and initialize the configuration of the configuration diagram of the roadbed and pavement subsidence reduction structure of the pipe jacking project according to the configured resource data of the target area to obtain the initial resource configuration result;

[0039] Judge whether the configuration of all sub-areas corresponding to the estimated probability of settlement event occurrence greater than the evaluation index threshold of the settlement event occurrence probability in the initial resource configuration result is completed;

[0040] When all the sub-regions corresponding to the estimated settlement event occurrence probabilities greater than the settlement event occurrence probability evaluation index threshold in the initial resource configuration result are configured, the monitoring configuration is performed according to the current initial resource configuration result;

[0041] When the sub-regions corresponding to the estimated settlement event occurrence probabilities greater than the settlement event occurrence probability evaluation index threshold in the initial resource configuration result are not all configured, genetic operations are performed based on the number of genetic generations to re-optimize the initial resource configuration result until all the sub-regions corresponding to the estimated settlement event occurrence probabilities greater than the settlement event occurrence probability evaluation index threshold are configured.

[0042] The present invention solves the defects existing in the background art and has the following beneficial effects:

[0043] The present invention provides a structure for reducing settlement of the roadbed and pavement in a pipe-jacking project, which controls the settlement of the roadbed and pavement during and after construction and ensures road traffic safety. Secondly, the present invention fully considers the occurrence probabilities of settlement events under different geological data, and further optimizes the layout of the structure for reducing settlement of the roadbed and pavement in the pipe-jacking project, improving the rationality of the layout for preventing settlement events. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0045] Figure 1 Shows a schematic diagram of the structure for reducing settlement of the roadbed and pavement in a pipe-jacking project during use;

[0046] Figure 2 Shows a schematic diagram of the end face structure of the structure for reducing settlement of the roadbed and pavement in a pipe-jacking project;

[0047] Figure 3 Shows a schematic diagram of the structure during the grouting process;

[0048] Figure 4 Shows a schematic diagram of the pipe shed structure;

[0049] Figure 5 Shows a schematic diagram of the structure for reducing settlement of the roadbed and pavement in a pipe-jacking project during connection. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0051] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0052] As Figures 1 to 5 shown, the first aspect of the present invention provides a subsidence reduction structure for the roadbed and pavement of a pipe jacking project, including:

[0053] Solid hollow steel pipes, steel reinforcement cages sleeved with the solid hollow steel pipes, and grouting filling layers;

[0054] Among them, the steel reinforcement cage includes a number of fixing rings arranged in a linear array, and a number of steel bars arranged in a circumferential array are installed on the circumference of the fixing ring to form a steel reinforcement cage;

[0055] A number of grouting holes are provided on the solid hollow steel pipe. By injecting grouting materials into the grouting holes, grouting filling is formed to form a pipe shed structure with the solid hollow steel pipe and the steel reinforcement cage.

[0056] It should be noted that the present invention proposes a subsidence reduction structure for the roadbed and pavement of a pipe jacking project to control the settlement of the roadbed and pavement during and after construction and ensure road traffic safety. Secondly, the present invention fully considers the occurrence probability of settlement events under different geological data, thereby further optimizing the layout of the subsidence reduction structure for the roadbed and pavement of the pipe jacking project and improving the rationality of the layout for preventing settlement events.

[0057] Furthermore, in the subsidence reduction structure for the roadbed and pavement of the pipe jacking project, the grouting materials include cement slurry, water glass solution, and epoxy resin-based slurry.

[0058] Furthermore, in the subsidence reduction structure for the roadbed and pavement of the pipe jacking project, two pipe shed structures are connected by connecting steel pipes to form a subsidence reduction structure.

[0059] Furthermore, in the subsidence reduction structure for the roadbed and pavement of the pipe jacking project, the subsidence reduction structure is located on the outer circumference of the underground pipeline to be implemented.

[0060] It should be noted that the reinforcement design of the pipe jacking section of this project adopts the pipe shed grouting support method. Among them, the construction process is as follows:

[0061] (1) One-time construction of full-section deep-hole grouting. Before the pipe shed construction, a C30 concrete guide wall with a thickness of 200 mm is made, and a double-layer Φ8@200@200 steel mesh is set.

[0062] (2) The horizontal deep-hole grouting method adopts the backward grouting method. The grouting principle should meet the requirements of grouting from top to bottom first and from the middle to both sides first. To ensure the hole formation of horizontal deep-hole grouting, the slurry used, and the grouting reinforcement effect. The grouting pressure is based on the principle that the cement slurry can be smoothly injected. In the case where the injection rate is greater than 10 L / min, a smaller grouting pressure is adopted to reduce the possibility of ground grouting, and it is adjusted according to the on-site construction. The grouting parameters should be adjusted according to the on-site test, and a trial injection test should be carried out before deep-hole grouting.

[0063] (3) The scope of deep-hole grouting in this section is the sand and pebble replacement roadbed, the effective diffusion radius is 0.5 m, the original hole filling rate is not less than 45%, and the slurry loss rate is not less than 1.15. The grouting should be continuous and uniform. The unconfined compressive strength of the stratum after grouting reinforcement should be not less than 0.8 Mpa, and the permeability coefficient should not be greater than 10- 6 cm / s.

[0064] (4) The jacking section grouting reinforcement needs to be detected to meet the design requirements before proceeding to the next construction process.

[0065] (5) When grouting, the grouting pressure needs to be controlled at the part close to the road surface, and the vertical deformation of the road surface and the situation of road surface grouting should be monitored in real time, and the road surface should not be damaged.

[0066] 1. Among them, the grouting parameters and technical requirements:

[0067] Grouting pressure P: 0.4 - 0.6 MPa; Grouting time t: 15 - 20 min; Diffusion radius r: 500 mm; Initial setting time of slurry: 30 - 60 min; Slurry loss rate β > 1.15; Horizontal hole depth h: 25 m; Water-cement ratio of cement slurry: 1:0.8 - 1:1.2; Slurry viscosity ratio: 3; Cement grade: 42.5R ordinary Portland cement; Dosage of admixture (silica fume or fly ash): 8% - 10%.

[0068] Other requirements:

[0069] (1) The dosage of the admixture should be determined according to the required time, generally 8 - 10% of the cement dosage.

[0070] (2) The drilling and grouting mechanical equipment and materials, etc. can be reasonably selected according to factors such as grouting technical requirements and construction conditions.

[0071] (3) A grouting test should be carried out before construction to determine reasonable design parameters. When the initial setting time does not meet the design requirements, the grouting pressure should be adjusted to make the slurry have a lower initial setting time.

[0072] (4) After grouting, check the grouting effect and make records.

[0073] 2. Pipe roof design parameters:

[0074] (1) Steel pipe specifications: Hot-rolled seamless thick-walled steel flower pipes, with an outer diameter of 108 mm and a wall thickness of 6 mm.

[0075] (2) Pipe spacing: The circumferential spacing is 40 cm, and the external insertion inclination angle is controlled at 1 - 3°.

[0076] (3) Grouting holes: The hole diameter is 12 mm, the hole spacing is 20 cm, arranged in a plum blossom pattern, and a non-drilled grout stopping section of ≥100 cm is left at the tail.

[0077] (4) Grouting material: Pure cement slurry.

[0078] (5) Orifice pipe: The outer diameter is 146 mm, the wall thickness is 6 mm, and the length is 1.5 m.

[0079] 3. The pipe shed is connected in segments according to the steel pipe specifications. The pipe shed segment length is 2 - 3 m. The pipe shed pipe joints are connected by Φ114x8 mm connecting steel pipes, and the pipe shed joints are arranged staggeredly.

[0080] 4. To improve the bending resistance of the steel pipe, a steel reinforcement cage is added inside the steel pipe. The steel reinforcement cage consists of 4 main reinforcements and fixing rings. The main reinforcements are made of Φ20 steel bars, and the fixing rings are made of Φ42 short pipe sections with a length of 50 mm and a wall thickness of 3.5 mm, which are welded to the main reinforcements and arranged at a spacing of 1 m.

[0081] 5. During the construction period, monitoring and measurement should be strengthened and feedback in a timely manner. When the stratum in the construction site is poor and the groundwater level is high, in order to ensure construction safety, dewatering measures should be taken to lower the water level 1 m below the bottom plate. During the entire construction process, a water-free operation condition should be ensured inside the support structure, and water-carrying operation is not allowed to ensure the safety of grouting construction. At the same time, countermeasures should be taken when the dewatering effect is not ideal.

[0082] The second aspect of the present invention provides a monitoring method for the subgrade and pavement settlement reduction structure of a pipe jacking project, which is applied to the subgrade and pavement settlement reduction structure of any pipe jacking project, and includes the following steps:

[0083] By arranging sensors in the target area, a sensor monitoring network is constructed, and geological structure data information in the target area is obtained through the sensor monitoring network;

[0084] According to the geological structure data information in the target area, a prediction model for subgrade and pavement settlement events is constructed, and the probability of occurrence of the predicted settlement events in the target area is estimated according to the prediction model for subgrade and pavement settlement events;

[0085] According to the probability of occurrence of the predicted settlement events in the target area, the subgrade and pavement settlement reduction structure of the pipe jacking project is configured to obtain the configuration diagram of the subgrade and pavement settlement reduction structure of the pipe jacking project;

[0086] Configure the monitoring according to the layout diagram of the roadbed and pavement subsidence reduction structure for the pipe jacking project.

[0087] It should be noted that the present invention fully considers the occurrence probability of settlement events under different geological data, and further optimizes the layout of the roadbed and pavement subsidence reduction structure for the pipe jacking project to improve the rationality of the layout for preventing settlement events.

[0088] Furthermore, in the monitoring method of the roadbed and pavement subsidence reduction structure for the pipe jacking project, by arranging sensors in the target area, constructing a sensor monitoring network, and obtaining geological structure data information in the target area through the sensor monitoring network, specifically:

[0089] By arranging sensors in the target area, constructing a sensor network, and obtaining geological structure data information when a settlement event occurs, taking the settlement event as a data node and taking the data of the geological structure data type in each geological structure data information as another data node;

[0090] Construct a directed description relationship, connect the data nodes based on the directed description relationship, construct a topological structure diagram, store the topological structure diagram in the database, and obtain geological structure data information in the target area through the sensor network;

[0091] By inputting the geological structure data information in the target area into the database for data fitting, calculating the frequency characteristics of the geological structure data information in the target area that is the same as the data node;

[0092] When the frequency characteristics of the geological structure data information in the target area that is the same as the data node are greater than the preset frequency characteristic threshold, increase the monitoring frequency of the current target area, and collect the geological structure data information in the target area according to the monitoring frequency of the current target area;

[0093] When the frequency characteristics of the geological structure data information in the target area that is the same as the data node are not greater than the preset frequency characteristic threshold, reduce the monitoring frequency of the current target area, and collect the geological structure data information in the target area according to the monitoring frequency of the current target area.

[0094] It should be noted that the sensors include temperature sensors, humidity sensors, etc., and the geological structure data information includes data such as temperature, humidity, soil porosity, etc. When there is geological structure data information in the target area that is the same as the data node, if the frequency of occurrence is higher, it means that it is closer to the occurrence of geological disasters. For example, if there are 10 data nodes in the actual topological structure and 9 actual identical data nodes, it means that the probability of a settlement event is high. Through this method, the monitoring frequency can be optimized according to the frequency characteristics of the geological structure data information in the target area that is the same as the data node, and the rationality of monitoring can be improved.

[0095] Further, in the monitoring method of the subgrade and pavement subsidence reduction structure for pipe jacking projects, a prediction model for subgrade and pavement settlement events is constructed based on the geological structure data information in the target area, specifically including:

[0096] Obtain the occurrence times of subgrade and pavement settlement events and the occurrence times of non-occurrence of subgrade and pavement settlement events under the geological structure data information in the target area, and construct a prediction model for subgrade and pavement settlement events based on a deep neural network;

[0097] Calculate the occurrence probability value of subgrade and pavement settlement events under the geological structure data information in the target area according to the occurrence times of subgrade and pavement settlement events and the occurrence times of non-occurrence of subgrade and pavement settlement events under the geological structure data information in the target area;

[0098] Construct an occurrence probability value feature matrix according to the occurrence probability value of subgrade and pavement settlement events under the geological structure data information in the target area;

[0099] Input the occurrence probability value feature matrix into the occurrence probability value feature matrix for training to obtain a prediction model for subgrade and pavement settlement events that meets the expectations.

[0100] It should be noted that through this method, a prediction model for subgrade and pavement settlement events that meets the expectations can be obtained, so as to predict the occurrence probability value of subgrade and pavement settlement events.

[0101] Further, in the monitoring method of the subgrade and pavement subsidence reduction structure for pipe jacking projects, estimate the occurrence probability of the estimated settlement event in the target area according to the prediction model of the subgrade and pavement settlement event, specifically including:

[0102] Obtain the geological structure data information in the target area, and input the geological structure data information in the target area into the prediction model of the subgrade and pavement settlement event for prediction;

[0103] Through prediction, obtain the occurrence probability of the estimated settlement event in the target area, and output the occurrence probability of the estimated settlement event in the target area.

[0104] Further, in the monitoring method of the subgrade and pavement subsidence reduction structure for pipe jacking projects, configure the subgrade and pavement subsidence reduction structure for the pipe jacking project according to the occurrence probability of the estimated settlement event in the target area, and obtain the configuration diagram of the subgrade and pavement subsidence reduction structure for the pipe jacking project, specifically including:

[0105] Obtain the occurrence probability of the estimated settlement event in each sub-area of the target area according to the occurrence probability of the estimated settlement event in the target area, and set the threshold of the evaluation index of the occurrence probability of the settlement event;

[0106] Judge whether the occurrence probability of the estimated settlement event in each sub-area of the target area is greater than the threshold of the evaluation index of the occurrence probability of the settlement event;

[0107] When the probability of the predicted settlement event occurring is greater than the threshold of the evaluation index of the probability of the settlement event occurring, the area corresponding to the probability of the predicted settlement event occurring being greater than the threshold of the evaluation index of the probability of the settlement event occurring is taken as the area to be preferentially allocated;

[0108] When the probability of the predicted settlement event occurring is not greater than the threshold of the evaluation index of the probability of the settlement event occurring, the area corresponding to the probability of the predicted settlement event occurring not being greater than the threshold of the evaluation index of the probability of the settlement event occurring is taken as the area to be sub-preferentially allocated;

[0109] Resource allocation is carried out according to the preferentially allocated area and the sub-preferentially allocated area, and the layout plan of the ground surface settlement reduction structure for the pipe jacking project is obtained.

[0110] It should be noted that through this method, the monitored area can be optimized, and the monitoring rationality of settlement events can be improved.

[0111] Furthermore, in the monitoring method of the ground surface settlement reduction structure for the pipe jacking project, monitoring configuration is carried out according to the layout plan of the ground surface settlement reduction structure for the pipe jacking project, which specifically includes:

[0112] Obtain the configuration resource data of the target area, introduce the genetic algorithm, set the number of genetic generations based on the genetic algorithm, and initialize the layout plan of the ground surface settlement reduction structure for the pipe jacking project according to the configuration resource data of the target area to obtain the initial resource allocation result;

[0113] Judge whether the configuration of all sub-areas corresponding to the probability of the predicted settlement event occurring being greater than the threshold of the evaluation index of the probability of the settlement event occurring in the initial resource allocation result is completed;

[0114] When the configuration of all sub-areas corresponding to the probability of the predicted settlement event occurring being greater than the threshold of the evaluation index of the probability of the settlement event occurring in the initial resource allocation result is completed, monitoring configuration is carried out according to the current initial resource allocation result;

[0115] When the configuration of all sub-areas corresponding to the probability of the predicted settlement event occurring being greater than the threshold of the evaluation index of the probability of the settlement event occurring in the initial resource allocation result is not completed, genetic operations are carried out based on the number of genetic generations to re-optimize the initial resource allocation result until the configuration of all sub-areas corresponding to the probability of the predicted settlement event occurring being greater than the threshold of the evaluation index of the probability of the settlement event occurring is completed.

[0116] It should be noted that through this method, the configuration resource data of the target area (such as the quantity of the ground surface settlement reduction structure for the pipe jacking project) can be optimized in combination with the genetic algorithm, and the monitoring rationality of settlement events can be improved.

[0117] In addition, this method further includes:

[0118] Obtain the variation characteristics of geological structure data under various meteorological characteristic data through big data, and construct a prediction model for the variation characteristics of geological structure data based on a deep neural network. Use the meteorological characteristic data as the first node of the graph neural network;

[0119] Use the variation characteristics of the geological structure as the second node of the graph neural network, construct an adjacency matrix for the first node and the second node, and input the adjacency matrix into the prediction model for the variation characteristics of geological structure data for training;

[0120] Through training, obtain a prediction model for the variation characteristics of geological structure data that meets expectations, and obtain the historical meteorological characteristic data in the target area. Input the historical meteorological characteristic data in the target area into the prediction model for the variation characteristics of geological structure data for prediction, and obtain the variation characteristics of geological structure data under the historical meteorological characteristic data in the current target area;

[0121] Extract the maximum value of geological structure data according to the variation characteristics of geological structure data under the historical meteorological characteristic data in the current target area, and update the geological structure data information in the target area according to the maximum value of the underlying geological structure data.

[0122] It should be noted that different meteorological types will cause changes in geological structure data. Predict the variation characteristics of geological structure data in the target area through historical meteorological data, so as to update the geological structure data information in the target area, and further improve the rationality of resource allocation and the accuracy of predicting settlement events.

[0123] In addition, this method also includes:

[0124] Obtain the geographical location information where the probability of the estimated settlement event occurring is greater than the threshold of the settlement event occurrence probability evaluation index, and obtain the driving vehicle information within the target range of the geographical location information where the probability of the estimated settlement event occurring is greater than the threshold of the settlement event occurrence probability evaluation index through the Internet of Things;

[0125] Based on the driving vehicle information within the target range, obtain the path planning information of the driving vehicles within the target range, and determine whether the path planning information of the driving vehicles within the target range passes through the geographical location information where the probability of the estimated settlement event occurring is greater than the threshold of the settlement event occurrence probability evaluation index;

[0126] When the path planning information of the driving vehicles within the target range passes through the geographical location information where the probability of the estimated settlement event occurring is greater than the threshold of the settlement event occurrence probability evaluation index, send a warning message through the Internet of Things, and re-plan the path planning information of the driving vehicles within the target range;

[0127] When the path planning information of the vehicle traveling within the target range does not pass through the geographical location information where the predicted settlement event probability is greater than the settlement event probability evaluation index threshold, the path planning information of the vehicle traveling within the target range is maintained unchanged.

[0128] It should be noted that through this method, early warning and avoidance of accidents caused by settlement events can be achieved.

[0129] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces. The indirect coupling or communication connection of the devices or units can be electrical, mechanical, or other forms.

[0130] The units described above as separate components may or may not be physically separated. The components shown as units may or may not be physical units. They can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0131] In addition, each functional unit in the embodiments of the present invention can be all integrated in a processing unit, or each unit can be separately used as a unit, or two or more units can be integrated in a unit. The above integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

[0132] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above method embodiments. The foregoing storage medium includes various media that can store program codes, such as removable storage devices, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks, or optical discs.

[0133] Alternatively, if the above integrated units of the present invention are implemented in the form of software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present invention, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods of the various embodiments of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as removable storage devices, ROM, RAM, magnetic disks, or optical discs.

[0134] The above are only the specific implementation manners of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A monitoring method for a subgrade and pavement subsidence reduction structure in a pipe jacking project, characterized in that Including the following steps: By arranging sensors in the target area, a sensor monitoring network is constructed, and geological structure data information in the target area is obtained through the sensor monitoring network; According to the geological structure data information in the target area, a prediction model for subgrade and pavement settlement events is constructed, and the probability of occurrence of the predicted settlement event in the target area is estimated according to the prediction model for subgrade and pavement settlement events; According to the probability of occurrence of the predicted settlement event in the target area, a subgrade and pavement settlement reduction structure for the pipe jacking project is configured to obtain a configuration diagram of the subgrade and pavement settlement reduction structure for the pipe jacking project; Monitoring configuration is carried out according to the configuration diagram of the subgrade and pavement settlement reduction structure for the pipe jacking project; By arranging sensors in the target area, a sensor monitoring network is constructed, and geological structure data information in the target area is obtained through the sensor monitoring network. Specifically: By arranging sensors in the target area, a sensor network is constructed, and geological structure data information at the time of the settlement event is obtained. The settlement event is used as a data node, and the data of the geological structure data type in each geological structure data information is used as another data node; A directed description relationship is constructed, and based on the directed description relationship, the data nodes are connected to construct a topological structure diagram. The topological structure diagram is stored in the database, and geological structure data information in the target area is obtained through the sensor network; By inputting the geological structure data information in the target area into the database for data fitting, the frequency characteristics of the occurrence of geological structure data information in the target area that is the same as the data node are calculated; When the frequency characteristics of the occurrence of geological structure data information in the target area that is the same as the data node are greater than the preset frequency characteristic threshold, the monitoring frequency of the current target area is increased, and geological structure data information in the target area is collected according to the monitoring frequency of the current target area; When the frequency characteristics of the occurrence of geological structure data information in the target area that is the same as the data node are not greater than the preset frequency characteristic threshold, the monitoring frequency of the current target area is decreased, and geological structure data information in the target area is collected according to the monitoring frequency of the current target area; According to the geological structure data information in the target area, a prediction model for subgrade and pavement settlement events is constructed. Specifically including: Obtain the number of occurrences of subgrade and pavement settlement events and the number of occurrences of non-subgrade and pavement settlement events under the geological structure data information in the target area, and construct a prediction model for subgrade and pavement settlement events based on a deep neural network; Calculate the probability value of the occurrence of subgrade and pavement settlement events under the geological structure data information in the target area according to the number of occurrences of subgrade and pavement settlement events and the number of occurrences of non-subgrade and pavement settlement events under the geological structure data information in the target area; Construct a probability value characteristic matrix according to the probability value of the occurrence of subgrade and pavement settlement events under the geological structure data information in the target area; Input the probability value characteristic matrix into the probability value characteristic matrix for training to obtain a prediction model for subgrade and pavement settlement events that meets the expectations; The subgrade and pavement settlement reduction structure for the pipe jacking project includes: A solid hollow steel pipe, a steel reinforcement cage sleeved with the solid hollow steel pipe, and a grouting filling layer; Wherein, the steel reinforcement cage includes a number of fixing rings arranged in a linear array, and a number of steel bars arranged in a circumferential array are installed on the circumference of the fixing ring to form a steel reinforcement cage; A number of grouting holes are provided on the solid hollow steel pipe. By injecting grouting materials into the grouting holes, grouting filling is formed, and a pipe shed structure is formed by the solid hollow steel pipe and the steel reinforcement cage.

2. The monitoring method of a settlement reduction structure for the roadbed and pavement of a pipe jacking project according to claim 1, characterized in that, The grouting materials include cement slurry, sodium silicate solution, and epoxy resin-based slurry.

3. The monitoring method of a jacking pipe project roadbed and pavement subsidence reduction structure according to claim 1, characterized in that, Two adjacent pipe shed structures are connected by a connecting steel pipe to form a settlement reduction structure.

4. The monitoring method of a ground settlement reduction structure for the roadbed and pavement of a pipe jacking project according to claim 1, characterized in that, The settlement reduction structure is located on the outer circumference of the underground pipeline to be implemented.

5. The monitoring method of a ground settlement reduction structure for the roadbed and pavement of a pipe jacking project according to claim 1, characterized in that Predicting the occurrence probability of the predicted settlement event in the target area according to the roadbed and pavement settlement event prediction model, specifically including: Obtaining the geological structure data information in the target area, and inputting the geological structure data information in the target area into the roadbed and pavement settlement event prediction model for prediction; Through prediction, obtaining the occurrence probability of the predicted settlement event in the target area, and outputting the occurrence probability of the predicted settlement event in the target area.

6. The monitoring method of a jacking pipe project roadbed and pavement subsidence reduction structure according to claim 1, characterized in that, Configuring the roadbed and pavement settlement reduction structure of the pipe jacking project according to the occurrence probability of the predicted settlement event in the target area, and obtaining the configuration diagram of the roadbed and pavement settlement reduction structure of the pipe jacking project, specifically including: Obtaining the occurrence probability of the predicted settlement event in each sub-area of the target area according to the occurrence probability of the predicted settlement event in the target area, and setting the threshold of the settlement event occurrence probability evaluation index; Judging whether the occurrence probability of the predicted settlement event in each sub-area of the target area is greater than the threshold of the settlement event occurrence probability evaluation index; When the occurrence probability of the predicted settlement event is greater than the threshold of the settlement event occurrence probability evaluation index, the area corresponding to the occurrence probability of the predicted settlement event greater than the threshold of the settlement event occurrence probability evaluation index is used as the area to be preferentially configured; When the occurrence probability of the predicted settlement event is not greater than the threshold of the settlement event occurrence probability evaluation index, the area corresponding to the occurrence probability of the predicted settlement event not greater than the threshold of the settlement event occurrence probability evaluation index is used as the area to be configured with secondary priority; Performing resource allocation according to the preferentially configured area and the area configured with secondary priority to obtain the configuration diagram of the roadbed and pavement settlement reduction structure of the pipe jacking project.

7. The monitoring method of a subsidence reduction structure for the roadbed and pavement of a pipe jacking project according to claim 1, characterized in that, Performing monitoring configuration according to the configuration diagram of the roadbed and pavement settlement reduction structure of the pipe jacking project, specifically including: Obtaining the configuration resource data of the target area, introducing a genetic algorithm, setting the number of genetic generations based on the genetic algorithm, and initializing the configuration of the configuration diagram of the roadbed and pavement settlement reduction structure of the pipe jacking project according to the configuration resource data of the target area to obtain the initial resource configuration result; Judging whether all the sub-areas corresponding to the occurrence probability of the predicted settlement event greater than the threshold of the settlement event occurrence probability evaluation index in the initial resource configuration result are configured; When all the sub-areas corresponding to the occurrence probability of the predicted settlement event greater than the threshold of the settlement event occurrence probability evaluation index in the initial resource configuration result are configured, performing monitoring configuration according to the current initial resource configuration result; When the sub-regions corresponding to the initial resource configuration results where the occurrence probabilities of not all predicted settlement events are greater than the threshold of the settlement event occurrence probability evaluation index are configured, perform genetic operations based on the number of generations to re-optimize the initial resource configuration results until the sub-regions corresponding to all predicted settlement events with occurrence probabilities greater than the threshold of the settlement event occurrence probability evaluation index are configured.

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