Construction safety strategy assessment method, device and system for gas pipeline under railway

Abstract

The present invention relates to the field of pipeline construction, specifically to a construction safety strategy evaluation method, device and system for a gas pipeline under a railway. Based on the physical space state data of the railway, the physical state characteristics of the railway are obtained, and combined with the dynamic characteristics of train travel, the underground area affected by the train travel is estimated; based on the dynamic data of the geological structure of the underground area, a geological structure evolution model is generated to predict the characteristics of abnormal geological structure events, thereby determining the safety evaluation results of all sub-areas under the underground area; based on the safety evaluation results of all sub-areas and the physical space laying state information of the gas pipeline, the limit conditions of the gas pipeline construction in each sub-area are estimated, thereby determining the gas pipeline construction strategy information. The present invention can combine the impact of the railway's own operation on the geological structure of the underground area, perform safety prediction and construction strategy evaluation on the construction of the gas pipeline under the railway, and improve the safety and reliability of the construction of the gas pipeline under the railway.

Description

Technical Field

[0001] The present invention relates to the field of pipeline construction, and in particular to a construction safety strategy evaluation method, device and system for a railway underpass gas pipeline. Background Art

[0002] As the demand for energy in social production and life continues to increase, the proportion of natural gas in social production and life has also increased accordingly. In order to achieve a large-scale and continuous supply of natural gas, construction activities such as underground gas pipeline laying have become increasingly frequent. The construction of underground gas pipelines has high requirements for underground geological structures. Generally speaking, underground gas pipelines are required to be laid in underground areas with stable geological structures that are not prone to subsidence and landslides. Therefore, geological exploration is required before the construction of underground gas pipelines to determine areas suitable for laying underground gas pipelines.

[0003] In the actual gas pipeline laying process, in order to shorten the laying length of the gas pipeline as much as possible, the gas pipeline will inevitably pass under the railway. The excavation and drilling of the underground area during the laying of the underground gas pipeline will affect the geological stability under the railway. In addition, the trains on the railway will also vibrate the soil layer under the railway during the running process, causing the soil layer to become loose under the long-term vibration. Once the gas pipeline is laid in the underground area of ​​the railway, there will be improper construction operations, which will cause safety accidents such as collapse in the underground area of ​​the railway, seriously affecting the safety of gas pipeline construction and railway operation. It can be seen that how to combine the impact of the railway's own operation on the geological structure of the underground area, and conduct safety prediction and construction strategy evaluation for the construction of the gas pipeline under the railway is of great significance to improving the safety and reliability of the construction of the gas pipeline under the railway. Summary of the invention

[0004] In order to avoid the collapse of the underground area due to improper construction during the construction of the railway under the gas pipeline, and in combination with the impact of the railway operation on the geological structure of the underground area, the safety prediction and construction strategy evaluation of the railway under the gas pipeline construction are carried out. The present invention provides a construction safety strategy evaluation method for the railway under the gas pipeline, which includes the following steps:

[0005] Acquire physical spatial state data of the railway, and obtain physical state characteristics of the railway based on the physical spatial state data; analyze the ground area where the railway is located based on the physical state characteristics and the dynamic characteristics of train travel on the railway, and estimate the underground area under the ground area affected by train travel; acquire geological structure dynamic data of the underground area based on the spatial characteristics of the underground area;

[0006] Analyze the geological structure dynamic data to generate a geological structure evolution model of the underground area; predict the occurrence characteristics of geological structure abnormal events in the underground area based on the geological structure evolution model; determine the safety assessment results of all sub-areas under the underground area based on the occurrence characteristics of the geological structure abnormal events;

[0007] Based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline, the gas pipeline construction limit conditions of each sub-area are estimated; based on the gas pipeline construction limit conditions, the gas pipeline construction strategy information of the underground area is determined.

[0008] Preferably, the obtaining of the physical space state data of the railway and obtaining the physical state characteristics of the railway based on the physical space state data are specifically:

[0009] Collecting a three-dimensional image of the ground area where the railway is located, performing pixel contour recognition on the three-dimensional image, and obtaining the edge contour data of the railway track and the edge contour data of the railway foundation in the ground area;

[0010] The railway track edge contour data and the railway foundation edge contour data are integrated and identified in three-dimensional space to obtain the physical state characteristics of the railway; wherein the physical state characteristics include the three-dimensional physical space structural morphological characteristics and the three-dimensional physical space force transmission characteristics of the railway.

[0011] Preferably, the analyzing the ground area where the railway is located based on the physical state characteristics and the dynamic characteristics of the train running on the railway to estimate the underground area under the ground area affected by the train running is specifically:

[0012] Based on the train speed data of the railway within a preset time interval, the dynamic characteristics of the vibration force generated by the train passing by the railway within the preset time interval are estimated; wherein the dynamic characteristics of the vibration force include the magnitude and direction change characteristics of the vibration force generated by the train passing by;

[0013] Based on the physical state characteristics and the dynamic characteristics of the vibration force, a diffusion and propagation analysis of the vibration force generated by the train passing through the ground area where the railway is located is performed to estimate the intensity attenuation characteristics corresponding to the propagation of the vibration force below the ground area; wherein the intensity attenuation characteristics refer to the intensity attenuation ratio of the vibration force corresponding to each propagation unit distance below the ground area;

[0014] Based on the intensity attenuation characteristics, the three-dimensional spatial range of the underground area under the ground area affected by the train movement is estimated.

[0015] Preferably, the obtaining of the geological structure dynamic data of the underground area based on the spatial characteristics of the underground area is specifically:

[0016] Based on the three-dimensional spatial range of the underground area, determine the internal space shape and the boundary trajectory shape of the underground area; based on the internal space shape and the boundary trajectory shape, select a number of internal key points and a number of boundary key points from the underground area;

[0017] Based on the respective position information of all internal key points and all boundary key points, the underground area is dynamically monitored for the geological structure at fixed points to obtain the respective geological structure dynamic data of all internal key points and all boundary key points; wherein the geological structure dynamic data includes the dynamic change data of the geological structure displacement speed and displacement direction.

[0018] Preferably, the geological structure dynamic data is analyzed to generate a geological structure evolution model of the underground area; based on the geological structure evolution model, the occurrence characteristics of abnormal geological structure events in the underground area are predicted, specifically:

[0019] Based on the relative position relationship between all internal key points and all boundary key points, the geological structure dynamic data including the dynamic change data of the geological structure displacement velocity and displacement direction are analyzed in time and space to generate a geological structure settlement evolution model of the underground area;

[0020] Based on the geological structure settlement evolution model, the geological structure settlement of the underground area is predicted to obtain the occurrence characteristics of the geological structure section dislocation settlement events in the underground area; wherein the occurrence characteristics include the occurrence location, occurrence time and section dislocation settlement amplitude of the geological structure section dislocation settlement event.

[0021] Preferably, the safety assessment results of all sub-areas under the underground area are determined based on the occurrence characteristics of the abnormal geological structure event, specifically:

[0022] Based on the occurrence characteristics of dislocation and settlement events of the geological structure section of the underground area, the geological safety assessment results of all sub-areas under the underground area are respectively conducted; wherein, the geological safety assessment results include the maximum external force bearing value corresponding to maintaining the stable state of the geological structure section of each sub-area.

[0023] Preferably, the gas pipeline construction limit conditions of each sub-area are estimated based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline, specifically:

[0024] Based on the gas pipeline laying path information and gas pipeline shape size information of the underground area, estimating the gas pipeline laying construction area of ​​the underground area;

[0025] Based on the geological safety assessment results of the gas pipeline laying construction area and all sub-areas, the construction limit conditions of the overlapping space between the gas pipeline laying construction area and each sub-area are determined; wherein the construction limit conditions refer to the construction action intensity and construction action trajectory allowed to be performed during the gas pipeline laying construction in the overlapping space.

[0026] Preferably, the determining of the gas pipeline construction strategy information of the underground area based on the gas pipeline construction limit condition is specifically:

[0027] The construction limit conditions of the overlapping spaces corresponding to all sub-areas are continuously integrated to determine the global construction action path corresponding to the gas pipeline laying construction in the underground area and the change information of the construction action intensity on the global construction action path, thereby generating the gas pipeline construction strategy navigation map information of the underground area.

[0028] On the other hand, the present invention provides a construction safety strategy assessment device for a railway underpass of a gas pipeline, the device comprising the following units:

[0029] A railway physical state identification module, used to obtain physical space state data of the railway, and obtain physical state characteristics of the railway based on the physical space state data;

[0030] A train travel impact area estimation module, configured to analyze the ground area where the railway is located based on the physical state characteristics and the train travel dynamic characteristics of the railway, and estimate the underground area under the ground area that is affected by the train travel;

[0031] A geological structure data acquisition module, used to acquire geological structure dynamic data of the underground area based on the spatial characteristics of the underground area;

[0032] A geological structure anomaly prediction module is used to analyze the geological structure dynamic data to generate a geological structure evolution model of the underground area; based on the geological structure evolution model, predict the occurrence characteristics of geological structure anomaly events in the underground area;

[0033] An underground area safety assessment module, used to determine the safety assessment results of all sub-areas under the underground area based on the occurrence characteristics of the abnormal geological structure event;

[0034] A pipeline construction limit determination module is used to estimate the limit conditions of gas pipeline construction in each sub-area based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline;

[0035] The pipeline construction strategy generation module is used to determine the gas pipeline construction strategy information of the underground area based on the gas pipeline construction limit conditions.

[0036] In addition, the present invention also provides a construction safety strategy evaluation system for a railway underpass of a gas pipeline, the system comprising:

[0037] The above-mentioned construction safety strategy assessment device for the railway underpass gas pipeline;

[0038] A construction navigation display device is used to generate a gas pipeline construction strategy navigation virtual reality map based on the gas pipeline construction strategy information from the construction safety strategy evaluation device.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The physical space state data of the railway is obtained, and the physical state characteristics of the railway are obtained based on the physical space state data; based on the physical state characteristics and the dynamic characteristics of the train running on the railway, the ground area where the railway is located is analyzed, and the underground area under the ground area affected by the train running is estimated; based on the spatial characteristics of the underground area, the dynamic data of the geological structure of the underground area is obtained. When laying a gas pipeline under the railway, the stability of the geological structure of the underground area of ​​the railway needs to be considered. If the geological structure of a certain range of the underground area of ​​the railway is relatively fragile, and the construction intensity during the laying of the gas pipeline under the railway is high, it is easy to destroy the geological structure of the corresponding range, resulting in fracture and dislocation settlement of the geological structure section, thereby causing safety accidents such as collapse in the corresponding range. In addition, trains are constantly passing by on the railway, and the trains will generate vibrations when passing through the railway at high speed. These vibrations are transmitted to the underground area corresponding to the railway through the railway tracks and foundation structures. Under the long-term and high-intensity vibration, the soil layer structure of the underground area corresponding to the railway will inevitably loosen and cannot maintain the original tight and stable state. Once the loose soil structure is subjected to an unbearable construction strength during the construction of the gas pipeline in the underground area, the loose soil structure in the underground area and its surrounding area will collapse, thereby endangering the structural safety of the railway. For this reason, during the construction of the gas pipeline under the railway, it is necessary to consider the impact of the train running on the railway on the soil structure of the underground area, so as to dynamically and comprehensively characterize the geological structure state of the underground area. Specifically, based on the physical spatial state data of structures such as the railway track and foundation, the physical state characteristics of the railway are obtained, and combined with the dynamic characteristics of the railway train running, the underground area under the ground area where the railway is located that is affected by the train running is estimated, and the area where the soil structure may be loosened due to the vibration generated by the train running is estimated. The spatial range is limited to accurately obtain the dynamic data of the geological structure of the underground area, and excessive acquisition of the dynamic data of the geological structure is avoided to increase the interference of irrelevant data.

[0041] Analyze the geological structure dynamic data to generate a geological structure evolution model for the underground area; predict the occurrence characteristics of geological structure abnormal events in the underground area based on the geological structure evolution model; determine the safety assessment results of all sub-areas under the underground area based on the occurrence characteristics of geological structure abnormal events. The geological structure dynamic data of the underground area is a global representation of the structural displacement such as settlement and / or dislocation caused by the vibration generated by the train running in the underground area affected by the train running. With the continuous intensification of structural displacement such as settlement and / or dislocation in the underground area, the overall geological structure safety of the underground area will also deteriorate, resulting in safety accidents such as collapse at a certain point or several points in the underground area. In order to accurately and comprehensively predict the spatial and temporal abnormal geological structure events such as collapse in the entire underground area, a geological structure evolution model of the underground area is generated based on the geological structure dynamic data. The geological structure evolution model is used to predict the location, time of occurrence and amplitude of section dislocation and settlement events of the geological structure section in the underground area. The settlement of the underground area is quantitatively predicted and characterized in multiple dimensions, providing a reliable basis for determining the safety assessment results of all sub-areas under the underground area, thereby determining the maximum external force that each sub-area can withstand to maintain a safe state of geological structure.

[0042] Based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline, the construction limit conditions of the gas pipeline in each sub-area are estimated; based on the construction limit conditions of the gas pipeline, the construction strategy information of the gas pipeline in the underground area is determined. The safety assessment results of all sub-areas under the underground area limit the maximum external force that each sub-area can withstand to maintain the safety state of the geological structure, and the laying path and pipeline dimensions of the gas pipeline determine the size of the gas pipeline laying construction area. In the actual gas pipeline laying process, not all gas pipelines will pass through the sub-area, but there will be a certain overlap with the sub-area. Therefore, the corresponding gas pipeline construction limit conditions are determined by combining the safety assessment results of all sub-areas and the gas pipeline laying construction area, so as to determine the construction strategy information of the gas pipeline in the underground area, provide accurate and comprehensive navigation guidance for the subsequent actual laying of the gas pipeline, and improve the safety and reliability of the construction of the gas pipeline under the railway. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0044] Figure 1It is a flow chart of the construction safety strategy evaluation method for a railway underpass of a gas pipeline provided by the present invention.

[0045] Figure 2 It is a structural diagram of a construction safety strategy assessment device for a railway underpass of a gas pipeline provided by the present invention.

[0046] Figure 3 It is a structural diagram of the construction safety strategy evaluation system for a railway underpass of a gas pipeline provided by the present invention. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention rather than all structures are shown in the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0048] The terms "including" and "having" and any variations thereof in the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] See also Figure 1 As shown, the present invention provides a construction safety strategy evaluation method for a railway underpass of a gas pipeline, the method comprising the following steps:

[0051] S100, obtaining the physical space status data of the railway, and obtaining the physical state characteristics of the railway based on the physical space status data; analyzing the ground area where the railway is located based on the physical state characteristics and the dynamic characteristics of the train running on the railway, and estimating the underground area under the ground area affected by the train running; obtaining the dynamic data of the geological structure of the underground area based on the spatial characteristics of the underground area.

[0052] Furthermore, the physical space state data of the railway is obtained, and based on the physical space state data, the physical state characteristics of the railway are obtained, specifically:

[0053] Collect three-dimensional images of the ground area where the railway is located, perform pixel contour recognition on the three-dimensional images, and obtain the edge contour data of the railway track and the edge contour data of the railway foundation in the ground area;

[0054] The railway track edge contour data and the railway foundation edge contour data are integrated and identified in three-dimensional space to obtain the physical state characteristics of the railway; wherein the physical state characteristics include the three-dimensional physical space structural morphological characteristics and the three-dimensional physical space force transmission characteristics of the railway.

[0055] Furthermore, based on the physical state characteristics and the dynamic characteristics of the train running on the railway, the ground area where the railway is located is analyzed, and the underground area under the ground area affected by the train running is estimated, specifically:

[0056] Based on the train speed data of the railway within the preset time interval, the dynamic characteristics of the vibration force generated by the train passing by the railway within the preset time interval are estimated; wherein the dynamic characteristics of the vibration force include the magnitude and direction change characteristics of the vibration force generated by the train passing by;

[0057] Based on the physical state characteristics and dynamic characteristics of vibration force, the diffusion and propagation of vibration force generated by trains passing through the ground area where the railway is located is analyzed, and the intensity attenuation characteristics corresponding to the propagation of vibration force under the ground area are estimated; where the intensity attenuation characteristics refer to the intensity attenuation ratio of the vibration force corresponding to each unit distance of propagation under the ground area;

[0058] Based on the intensity attenuation characteristics, the three-dimensional spatial extent of the underground area under the ground area affected by the train movement is estimated.

[0059] Furthermore, based on the spatial characteristics of the underground area, the dynamic data of the geological structure of the underground area is obtained, specifically:

[0060] Based on the three-dimensional spatial range of the underground area, determine the internal space shape and the boundary trajectory shape of the underground area; based on the internal space shape and the boundary trajectory shape, select a number of internal key points and a number of boundary key points from the underground area;

[0061] Based on the respective position information of all internal key points and all boundary key points, fixed-point geological structure dynamic monitoring is carried out on the underground area to obtain the respective geological structure dynamic data of all internal key points and all boundary key points; wherein, the geological structure dynamic data includes the dynamic change data of geological structure displacement speed and displacement direction.

[0062] The railway in the ground area mainly includes two parts: the railway track and the railway foundation. The extension path of the railway track determines the actual contact range between the railway and the ground area, and the external structure of the railway foundation determines the transmission of the vibration generated by the train running on the railway track to the corresponding underground area. By identifying the structural form of the railway in the physical space, the degree of influence of the train running on the railway on the geological structure of the underground area can be accurately determined. In order to comprehensively and accurately identify the structural form of the railway track and the railway foundation, the ground area where the railway is located can be photographed by binoculars through aerial vehicles such as drones to obtain a three-dimensional image of the ground area, and the pixel contour of the three-dimensional image can be identified to obtain the edge contour data of the railway track and the edge contour data of the railway foundation, so as to globally identify and characterize the contour shape of the railway track and the railway foundation. Then, the edge contour data of the railway track and the edge contour data of the railway foundation are integrated and identified in three-dimensional space to obtain the physical state characteristics of the railway track and the railway foundation, so as to determine the three-dimensional physical space structural form characteristics such as the extension path and occupation range of the railway in the ground area and the three-dimensional physical space force transmission characteristics such as the transmission direction range of the vibration force generated by the railway on the train.

[0063] The faster the train travels on the railway, the greater the vibration force generated by the train; and the greater the curvature of the railway track, the smaller and more concentrated the range of the vibration force generated by the train. Based on the train speed data of the railway within the preset time interval, the vibration effect generated by the train during the railway is simulated and calculated to obtain the magnitude and direction change characteristics of the vibration force generated by the train passing by. The simulation calculation of the train speed data can be achieved through a neural network model, which is not described in detail here. In addition, the three-dimensional physical space structural morphological characteristics and three-dimensional physical space force transmission characteristics of the railway and the magnitude and direction change characteristics of the vibration force calculated above are used to perform a diffusion propagation attenuation analysis of the vibration force intensity generated by the train passing by the ground area where the railway is located, and the vibration force generated by the train passing by is estimated. The attenuation ratio of the vibration force intensity corresponding to each propagation unit distance (for example, 1m) is estimated after the vibration force generated by the train travels through the ground area and enters the corresponding underground area. When the vibration force generated by the train is transmitted into the underground area, the vibration force will be absorbed by the soil structure in the underground area and attenuated. As the vibration force is continuously transmitted, the vibration force will attenuate to below the preset force intensity threshold. At this time, it can be considered that the attenuated vibration force will not affect the stability of the soil structure in the underground area, and will not cause abnormal conditions such as settlement and dislocation of the soil structure. For this reason, based on the preset force intensity threshold as a benchmark and combined with the intensity attenuation ratio, the vibration force is estimated to be transmitted in different directions below the ground area and attenuated to the required transmission distance corresponding to the preset force intensity threshold, so as to estimate the three-dimensional spatial range of the underground area affected by the train below the ground area based on the required transmission distance corresponding to different directions, so as to limit the spatial range for accurately obtaining the dynamic data of the geological structure of the underground area and avoid excessive acquisition of the dynamic data of the geological structure and increase the interference of irrelevant data.

[0064] During the actual construction process, several fiber grating sensors and other geological structure dynamic detection equipment will be pre-installed in a distributed form below the ground area where the railway is located, so as to conduct large-scale geological structure dynamic detection below the ground area. Based on the three-dimensional spatial range of the underground area determined above, the internal space shape and boundary trajectory shape of the underground area are determined, and based on the internal space shape and boundary trajectory shape, several internal key points and several boundary key points are uniformly selected from the internal space and boundary trajectory of the underground area, and a distributed point pattern is formed using the internal key points and boundary key points to provide location identification for the subsequent extraction of matching geological structure dynamic data from the geological structure dynamic detection equipment. In addition, based on the respective position information of all internal key points and all boundary key points, the geological structure dynamic data generated by the geological structure dynamic detection equipment is screened at a fixed point to obtain the dynamic change data of the geological structure displacement speed and displacement direction of all internal key points and all boundary key points, providing a sufficient data basis for the subsequent prediction of the occurrence of abnormal geological structure events.

[0065] S200, analyzing the geological structure dynamic data to generate a geological structure evolution model for the underground area; predicting the occurrence characteristics of abnormal geological structure events in the underground area based on the geological structure evolution model; and determining the safety assessment results of all sub-areas under the underground area based on the occurrence characteristics of abnormal geological structure events.

[0066] Furthermore, the geological structure dynamic data is analyzed to generate a geological structure evolution model of the underground area; based on the geological structure evolution model, the occurrence characteristics of geological structure abnormal events in the underground area are predicted, specifically:

[0067] Based on the relative position relationship between all internal key points and all boundary key points, the geological structure dynamic data including the dynamic change data of geological structure displacement speed and displacement direction are analyzed in time and space to generate the geological structure settlement evolution model of the underground area;

[0068] Based on the geological structure settlement evolution model, the geological structure settlement of the underground area is predicted to obtain the occurrence characteristics of the geological structure section dislocation settlement events in the underground area; wherein, the occurrence characteristics include the occurrence location, occurrence time and section dislocation settlement amplitude of the geological structure section dislocation settlement events.

[0069] Furthermore, based on the characteristics of abnormal geological structure events, the safety assessment results of all sub-areas under the underground area are determined, specifically:

[0070] Based on the occurrence characteristics of dislocation and settlement events of geological structure sections in the underground area, the geological safety assessment results of all sub-areas under the underground area are evaluated; among them, the geological safety assessment results include the maximum external force bearing value corresponding to maintaining the stability of the geological structure section of each sub-area.

[0071] The geological structure dynamic data corresponding to all internal key points and all boundary key points can quantitatively characterize the displacement changes of the geological structure inside and at the boundary of the underground area in a discrete form. The geological structure dynamic data of the underground area is a global characterization of the structural displacement such as settlement and / or dislocation of the underground area affected by the train running due to the vibration generated by the train running. With the continuous intensification of structural displacement such as settlement and / or dislocation of the underground area, the overall geological structure safety of the underground area will also deteriorate, resulting in safety accidents such as collapse at a certain point or several points in the underground area. In order to continuously characterize the global geological structure settlement changes of the underground area, based on the relative position relationship between all internal key points and all boundary key points, the geological structure dynamic data including the dynamic change data of the geological structure displacement speed and displacement direction are analyzed at the time and space levels to generate a geological structure settlement evolution model for the underground area. The geological structure evolution model is also used to predict the location, time of occurrence, amplitude of section dislocation and settlement of geological structure section dislocation and settlement events in the underground area, and other characteristic information. The settlement of the underground area is quantitatively predicted and characterized in multiple dimensions, providing a reliable basis for determining the safety assessment results of all sub-areas under the underground area, thereby determining the maximum external force that each sub-area can withstand to maintain a safe state of geological structure, that is, when construction operations are carried out on the sub-area with the maximum external force, the sub-area can maintain a safe state of geological structure; when the force corresponding to the construction operations on the sub-area is greater than the maximum external force, the sub-area will experience geological structure safety accidents such as collapse. In this way, the gas pipeline construction strategy can be determined based on the maximum external force to improve the safety of gas pipeline laying construction.

[0072] S300, based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline, estimate the limit conditions of gas pipeline construction in each sub-area; based on the limit conditions of gas pipeline construction, determine the gas pipeline construction strategy information in the underground area.

[0073] Furthermore, based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline, the construction limit conditions of the gas pipeline in each sub-area are estimated, specifically:

[0074] Based on the gas pipeline laying path information and gas pipeline size information in the underground area, estimating the gas pipeline laying construction area in the underground area;

[0075] Based on the geological safety assessment results of the gas pipeline laying construction area and all sub-areas, the construction limit conditions of the overlapping space between the gas pipeline laying construction area and each sub-area are determined; among which, the construction limit conditions refer to the construction action intensity and construction action trajectory allowed to be performed during the gas pipeline laying construction in the overlapping space.

[0076] Furthermore, based on the extreme conditions of gas pipeline construction, the gas pipeline construction strategy information in the underground area is determined, specifically:

[0077] The construction limit conditions of the overlapping spaces corresponding to all sub-areas are continuously integrated to determine the global construction action path corresponding to the gas pipeline laying construction in the underground area and the change information of the construction action intensity in the global construction action path, so as to generate the gas pipeline construction strategy navigation map information in the underground area.

[0078] The safety assessment results of all sub-areas under the underground area limit the maximum external force that each sub-area can withstand to maintain the safety state of the geological structure, and the laying path and pipeline dimensions of the gas pipeline determine the size of the gas pipeline laying construction area. In the actual gas pipeline laying construction process, not all gas pipelines will pass through the sub-area, but there will be a certain overlap with the sub-area. Therefore, the corresponding gas pipeline construction limit conditions are determined by combining the safety assessment results of all sub-areas and the gas pipeline laying construction area, so as to determine the gas pipeline construction strategy information in the underground area, provide accurate and comprehensive navigation guidance for the subsequent actual laying construction of the gas pipeline, and improve the safety and reliability of the construction of the railway under the gas pipeline. Specifically, based on the laying path information and the gas pipeline dimension information of the underground area, the gas pipeline laying construction area of ​​the underground area is estimated, and combined with the geological safety assessment results of all sub-areas, the construction action intensity and construction action trajectory allowed to be executed in the overlapping space between the gas pipeline laying construction area and each sub-area are determined, so as to define the benchmark for the action intensity and action trajectory of the subsequent gas pipeline laying construction in each sub-area. In addition, the construction limit conditions of the overlapping spaces corresponding to all sub-areas are continuously integrated to determine the global construction action path corresponding to the gas pipeline laying construction in the underground area and the change information of the construction action intensity in the global construction action path, so as to generate the gas pipeline construction strategy navigation map information of the underground area. In this way, effective and accurate construction strategy visualization navigation guidance can be formed for the entire railway underpass gas pipeline laying construction, providing accurate and comprehensive navigation guidance for the subsequent actual gas pipeline laying construction, and improving the safety and reliability of railway underpass gas pipeline construction.

[0079] See also Figure 2 As shown, the present invention provides a construction safety strategy evaluation device for a railway underpass of a gas pipeline, the system comprising the following units:

[0080] The railway physical state identification module is used to obtain the physical space state data of the railway, and obtain the physical state characteristics of the railway based on the physical space state data;

[0081] The train travel impact area estimation module is used to analyze the ground area where the railway is located based on the physical state characteristics and the dynamic characteristics of the train travel of the railway, and estimate the underground area under the ground area that is affected by the train travel;

[0082] A geological structure data acquisition module is used to acquire the geological structure dynamic data of the underground area based on the spatial characteristics of the underground area;

[0083] The geological structure anomaly prediction module is used to analyze the geological structure dynamic data and generate a geological structure evolution model for the underground area; based on the geological structure evolution model, it predicts the occurrence characteristics of geological structure anomaly events in the underground area;

[0084] The underground area safety assessment module is used to determine the safety assessment results of all sub-areas under the underground area based on the characteristics of abnormal geological structure events;

[0085] A pipeline construction limit determination module is used to estimate the limit conditions of gas pipeline construction in each sub-area based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline;

[0086] The pipeline construction strategy generation module is used to determine the gas pipeline construction strategy information in the underground area based on the gas pipeline construction limit conditions.

[0087] The operation and effect of the construction safety strategy assessment device for a railway passing a gas pipeline of the present invention correspond to and are consistent with the above-mentioned construction safety strategy assessment method for a railway passing a gas pipeline, and the railway physical state recognition module, train travel impact area estimation module, geological structure data acquisition module, geological structure anomaly prediction module, underground area safety assessment module, pipeline construction limit determination module, and pipeline construction strategy generation module of the construction safety strategy assessment device for a railway passing a gas pipeline respectively implement the same functions as the above-mentioned construction safety strategy assessment method for a railway passing a gas pipeline, and the construction safety strategy assessment device for a railway passing a gas pipeline will not be repeated here.

[0088] See also Figure 3 As shown, the present invention provides a construction safety strategy evaluation system for a railway underpass of a gas pipeline, the system comprising:

[0089] The above-mentioned construction safety strategy assessment device for the railway underpass gas pipeline;

[0090] A construction navigation display device is used to generate a gas pipeline construction strategy navigation virtual reality map based on the gas pipeline construction strategy information from the construction safety strategy evaluation device.

[0091] In the above-mentioned construction safety strategy assessment system for the gas pipeline under the railway, the construction navigation display device can be but is not limited to a visual construction navigator matched with the underground excavation equipment or a VR display worn by the construction workers, so that the construction navigation display device can perform visual processing and conversion on the gas pipeline construction strategy information from the construction safety strategy assessment device, and generate a gas pipeline construction strategy navigation virtual reality map, thereby providing accurate navigation guidance for the laying construction of the gas pipeline under the railway, and improving the accuracy and efficiency of the construction of the gas pipeline under the railway.

[0092] Through the description of the above implementation methods, technicians in this field can clearly understand that each implementation method can be implemented by adding a necessary general hardware platform, and of course can also be implemented by combining hardware and software. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a computer product, and the present invention can be in the form of a computer program 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 codes.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it, and other embodiments may also be used. Although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A construction safety strategy assessment method for a railway underpass of a gas pipeline, characterized in that: The method comprises the following steps: The physical space state data of the railway is obtained, and based on the physical space state data, the physical state characteristics of the railway are obtained, which are specifically: Collecting a three-dimensional image of the ground area where the railway is located, performing pixel contour recognition on the three-dimensional image, and obtaining the edge contour data of the railway track and the edge contour data of the railway foundation in the ground area; Performing three-dimensional spatial integration and recognition on the edge contour data of the railway track and the edge contour data of the railway foundation to obtain the physical state characteristics of the railway; wherein the physical state characteristics include the three-dimensional physical space structural morphological characteristics and the three-dimensional physical space force transmission characteristics of the railway; Based on the physical state characteristics and the dynamic characteristics of the train running on the railway, the ground area where the railway is located is analyzed to estimate the underground area under the ground area affected by the train running, which is specifically: Based on the train speed data of the railway within a preset time interval, the dynamic characteristics of the vibration force generated by the train passing by the railway within the preset time interval are estimated; wherein the dynamic characteristics of the vibration force include the magnitude and direction change characteristics of the vibration force generated by the train passing by; Based on the physical state characteristics and the dynamic characteristics of the vibration force, a diffusion and propagation analysis of the vibration force generated by the train passing through the ground area where the railway is located is performed to estimate the intensity attenuation characteristics corresponding to the propagation of the vibration force below the ground area; wherein the intensity attenuation characteristics refer to the intensity attenuation ratio of the vibration force corresponding to each propagation unit distance below the ground area; estimating the three-dimensional spatial range of the underground area under the ground area affected by the train running based on the intensity attenuation characteristics; Based on the spatial characteristics of the underground area, the dynamic data of the geological structure of the underground area is obtained, which is specifically: Based on the three-dimensional spatial range of the underground area, determine the internal space shape and the boundary trajectory shape of the underground area; based on the internal space shape and the boundary trajectory shape, select a number of internal key points and a number of boundary key points from the underground area; Based on the respective position information of all internal key points and all boundary key points, the underground area is dynamically monitored for the fixed-point geological structure to obtain the respective geological structure dynamic data of all internal key points and all boundary key points; wherein the geological structure dynamic data includes the dynamic change data of the displacement speed and displacement direction of the geological structure; The geological structure dynamic data is analyzed to generate a geological structure evolution model of the underground area; based on the geological structure evolution model, the occurrence characteristics of abnormal geological structure events in the underground area are predicted, which is specifically: Based on the relative position relationship between all internal key points and all boundary key points, the geological structure dynamic data including the dynamic change data of the geological structure displacement velocity and displacement direction are analyzed in time and space to generate a geological structure settlement evolution model of the underground area; Based on the geological structure settlement evolution model, the geological structure settlement of the underground area is predicted to obtain the occurrence characteristics of the geological structure section dislocation settlement event in the underground area; wherein the occurrence characteristics include the occurrence location, occurrence time and section dislocation settlement amplitude of the geological structure section dislocation settlement event; Based on the occurrence characteristics of the abnormal geological structure events, the safety assessment results of all sub-areas under the underground area are determined, which are specifically: Based on the occurrence characteristics of the dislocation and settlement events of the geological structure section of the underground area, the geological safety assessment results of all sub-areas under the underground area; wherein the geological safety assessment results include the maximum external force bearing value corresponding to the stable state of the geological structure section of each sub-area; Based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline, the gas pipeline construction limit conditions of each sub-area are estimated; based on the gas pipeline construction limit conditions, the gas pipeline construction strategy information of the underground area is determined.

2. The method according to claim 1, characterized in that Based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline, the construction limit conditions of the gas pipeline in each sub-area are estimated, specifically: Based on the gas pipeline laying path information and gas pipeline shape size information of the underground area, estimating the gas pipeline laying construction area of ​​the underground area; Based on the geological safety assessment results of the gas pipeline laying construction area and all sub-areas, the construction limit conditions of the overlapping space between the gas pipeline laying construction area and each sub-area are determined; wherein the construction limit conditions refer to the construction action intensity and construction action trajectory allowed to be performed during the gas pipeline laying construction in the overlapping space.

3. The method according to claim 2, characterized in that The determining of the gas pipeline construction strategy information in the underground area based on the gas pipeline construction limit condition is specifically: The construction limit conditions of the overlapping spaces corresponding to all sub-areas are continuously integrated to determine the global construction action path corresponding to the gas pipeline laying construction in the underground area and the change information of the construction action intensity on the global construction action path, thereby generating the gas pipeline construction strategy navigation map information of the underground area.

4. A construction safety strategy assessment device for a gas pipeline under a railway, characterized in that: The device comprises the following units: The railway physical state identification module is used to obtain the physical space state data of the railway, and obtain the physical state characteristics of the railway based on the physical space state data, which are specifically: Collecting a three-dimensional image of the ground area where the railway is located, performing pixel contour recognition on the three-dimensional image, and obtaining the edge contour data of the railway track and the edge contour data of the railway foundation in the ground area; Performing three-dimensional spatial integration and recognition on the edge contour data of the railway track and the edge contour data of the railway foundation to obtain the physical state characteristics of the railway; wherein the physical state characteristics include the three-dimensional physical space structural morphological characteristics and the three-dimensional physical space force transmission characteristics of the railway; The train travel impact area estimation module is used to analyze the ground area where the railway is located based on the physical state characteristics and the train travel dynamic characteristics of the railway, and estimate the underground area under the ground area affected by the train travel, which is specifically: Based on the train speed data of the railway within a preset time interval, the dynamic characteristics of the vibration force generated by the train passing by the railway within the preset time interval are estimated; wherein the dynamic characteristics of the vibration force include the magnitude and direction change characteristics of the vibration force generated by the train passing by; Based on the physical state characteristics and the dynamic characteristics of the vibration force, a diffusion and propagation analysis of the vibration force generated by the train passing through the ground area where the railway is located is performed to estimate the intensity attenuation characteristics corresponding to the propagation of the vibration force below the ground area; wherein the intensity attenuation characteristics refer to the intensity attenuation ratio of the vibration force corresponding to each propagation unit distance below the ground area; estimating the three-dimensional spatial range of the underground area under the ground area affected by the train running based on the intensity attenuation characteristics; The geological structure data acquisition module is used to acquire the geological structure dynamic data of the underground area based on the spatial characteristics of the underground area, which is specifically: Based on the three-dimensional spatial range of the underground area, determine the internal space shape and the boundary trajectory shape of the underground area; based on the internal space shape and the boundary trajectory shape, select a number of internal key points and a number of boundary key points from the underground area; Based on the respective position information of all internal key points and all boundary key points, the underground area is dynamically monitored for the fixed-point geological structure to obtain the respective geological structure dynamic data of all internal key points and all boundary key points; wherein the geological structure dynamic data includes the dynamic change data of the displacement speed and displacement direction of the geological structure; The geological structure anomaly prediction module is used to analyze the geological structure dynamic data to generate a geological structure evolution model of the underground area; based on the geological structure evolution model, predict the occurrence characteristics of geological structure anomaly events in the underground area, which is specifically: Based on the relative position relationship between all internal key points and all boundary key points, the geological structure dynamic data including the dynamic change data of the geological structure displacement velocity and displacement direction are analyzed in time and space to generate a geological structure settlement evolution model of the underground area; Based on the geological structure settlement evolution model, the geological structure settlement of the underground area is predicted to obtain the occurrence characteristics of the geological structure section dislocation settlement event in the underground area; wherein the occurrence characteristics include the occurrence location, occurrence time and section dislocation settlement amplitude of the geological structure section dislocation settlement event; The underground area safety assessment module is used to determine the safety assessment results of all sub-areas under the underground area based on the occurrence characteristics of the abnormal geological structure event, which is specifically: Based on the occurrence characteristics of the dislocation and settlement events of the geological structure section of the underground area, the geological safety assessment results of all sub-areas under the underground area; wherein the geological safety assessment results include the maximum external force bearing value corresponding to the stable state of the geological structure section of each sub-area; A pipeline construction limit determination module is used to estimate the limit conditions of gas pipeline construction in each sub-area based on the safety assessment results of all sub-areas and the physical space laying status information of the gas pipeline; The pipeline construction strategy generation module is used to determine the gas pipeline construction strategy information of the underground area based on the gas pipeline construction limit conditions.

5. The construction safety strategy evaluation system for the railway underpass gas pipeline is characterized by: The system comprises: The construction safety strategy assessment device for a railway underpass of a gas pipeline as claimed in claim 4; A construction navigation display device is used to generate a gas pipeline construction strategy navigation virtual reality map based on the gas pipeline construction strategy information from the construction safety strategy evaluation device.

Images