CN-122018372-A - Municipal road foundation pit pipeline clear distance monitoring and sealing control system, method and assembly

CN122018372ACN 122018372 ACN122018372 ACN 122018372ACN-122018372-A

Abstract

The invention discloses a municipal road foundation pit pipeline clear distance monitoring and sealing control system, method and assembly. The system comprises a clear distance measuring assembly, an edge gateway controller, a physical seal control actuator, a seal control in-place feedback device and a construction procedure control module. The method comprises the steps of collecting clear distance data of a supporting component and an existing municipal pipeline by a clear distance measuring component, obtaining at least three measuring section data along the axial direction of the pipeline by a gateway, obtaining a first clear distance measuring point and a second clear distance measuring point in each section, obtaining the minimum clear distance of the sections and obtaining the minimum clear distance of a whole office, calculating clear distance approximation rate according to adjacent sampling, and evaluating credibility based on missing measurement, jump, drift and calibration validity period. And the global minimum clear distance is not greater than the seal control clear distance threshold, or the approaching rate is not less than the seal control rate threshold, when the confidence level is lower than the threshold, a seal control instruction is output, the executor implements seal control, the feedback device returns to the in-place state to form a closed loop, and the process control module interlocks the control loop and/or the passing control device of the operation equipment, so that dangerous processes are forbidden to start and/or forbidden to pass.

Inventors

LI ZHENGWEI
YE ZHIQIU
ZHAO PENG
LIU YONG
YANG RUI

Assignees

安徽水安建设集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260408

Claims (10)

1. The utility model provides a municipal road foundation ditch pipeline clear distance monitoring seals accuse system which characterized in that includes: The clear distance measuring assembly is used for collecting clear distance data between the foundation pit supporting member and the existing municipal pipeline; An edge gateway controller in communication with the clear distance measurement assembly, the edge gateway controller configured to obtain clear distance data at least three measurement sections axially distributed along the existing municipal pipe, wherein each measurement section includes at least a first clear distance measurement point and a second clear distance measurement point; obtaining minimum clearance between the first clearance measuring point and the second clearance measuring point, obtaining minimum clearance between the sections, calculating clearance approximation rate, dividing the clearance approximation rate by the time difference between adjacent sampling moments after subtracting the global minimum clearance between the sampling moments from the global minimum clearance between the sampling moments, performing reliability evaluation based on at least one of missing measurement, jump, drift and calibration effective period of the clearance data to obtain global reliability index, and outputting a sealing command when any sealing condition is satisfied, wherein the global minimum clearance is not greater than a preset sealing clearance threshold, or the clearance approximation rate is not less than a preset sealing rate threshold, or the global reliability index is lower than a preset reliability threshold; The physical seal control executor is used for responding to the seal control instruction to implement construction seal control; the seal control in-place feedback device is used for detecting and feeding back the seal control in-place state of the physical seal control actuator to the edge gateway controller; And the construction process control module is used for responding to the seal control instruction and outputting a process control signal to at least one of a control loop and a traffic control device of the operation equipment so as to enable a preset dangerous process to be in at least one state of forbidden start and forbidden traffic.
2. The system of claim 1, wherein the foundation pit support member comprises a double row of rows of piles and an inter-pile beam disposed between the two rows of piles, the existing municipal pipe being located below the inter-pile beam.
3. The system of claim 2, wherein the at least three measurement profiles include at least a measurement profile corresponding to the inter-pile beam span and two measurement profiles adjacent to both sides of a pile-beam connection node.
4. The system of claim 1, wherein the edge gateway controller is further configured to make an unseal decision after receiving the seal-in-place feedback, and output an unseal instruction to unseal the construction seal and restore at least one of a start right and a pass right of the preset hazardous process when the global minimum clear distance is not less than a preset unseal clear distance threshold and continues for a preset stability window duration, and the global reliability index is not less than a preset reliability threshold, and the clear distance approximation rate is less than a preset unseal rate threshold, wherein the unseal clear distance threshold is greater than the seal-control clear distance threshold.
5. A clear distance measurement assembly for use in the safety clear distance monitoring of existing pipelines in municipal road foundation pit, applied to the system of claim 1, comprising: the support member side mounting seat is used for being fixed on the foundation pit support member; the clear distance sensor is arranged on the support member side mounting seat and is used for carrying out non-contact distance measurement and outputting clear distance signals; The pipeline side reference piece is used for being fixed on the outer wall of the existing municipal pipeline in a non-destructive mode through the anchor ear, and comprises a plane reference target plate; A direction-finding limiting structure for limiting a measurement direction of the clear distance sensor to be directed toward the planar reference target plate; a protection structure for protecting the clear distance sensor, and The detachable connection structure is used for realizing detachable connection between the clear distance sensor and the support member side mounting seat; The plane reference target plate provides a reproducible ranging reference plane for the clear distance sensor, so that the clear distance measuring assembly outputs clear distance data between the foundation pit supporting member and the existing municipal pipeline.
6. The clearance measurement assembly of claim 5, wherein said support member side mount includes a base plate and an adjustable bracket, said direction-finding defining structure including a positioning member and a locking member for locking a measurement direction of said clearance sensor to a preset direction directed toward said planar reference target plate.
7. The clearance gauge assembly of claim 5, wherein the anchor ear includes a metal band and an elastic pad, and wherein at least one of a mud adhesion preventing rim and a mud scraping structure is disposed outside of the planar reference target plate.
8. A method for monitoring and sealing the safety clearance of existing pipelines of municipal road foundation pit, which is applied to the system of claim 1, and is characterized by comprising the following steps: S1) at least three measuring sections are axially arranged along the existing municipal pipeline, and at least a first clear distance measuring point and a second clear distance measuring point are arranged on each measuring section; s2) at least collecting the clear distance data of the first clear distance measuring point in each measuring section as a first clear distance value, collecting the clear distance data of the second clear distance measuring point in each measuring section as a second clear distance value, and recording a calibration time stamp; s3) taking the minimum value of the first clear distance value and the second clear distance value as the minimum clear distance of the cross section for each measured cross section, and taking the minimum value of the minimum clear distance of the cross section of each measured cross section as the minimum clear distance of the whole world; s4) calculating a clear distance approximation rate, wherein the clear distance approximation rate is obtained by subtracting the global minimum clear distance of the next sampling moment from the global minimum clear distance of the previous sampling moment and dividing the value by the time difference of the adjacent sampling moment; S5) carrying out reliability assessment based on at least one of missing measurement, jump, drift and calibration effective period of the clear distance data to obtain a global reliability index; s6) generating a seal control trigger event when any condition that the global minimum clear distance is not larger than a preset seal control clear distance threshold, or the clear distance approximation rate is not smaller than a preset seal control rate threshold, or the global reliability index is lower than a preset reliability threshold is met; S7) responding to the sealing control trigger event, driving a physical sealing control executor to implement construction sealing control, collecting sealing control in-place feedback to judge whether the sealing control is in place, and outputting a process control signal to at least one of an operation equipment control loop and a passing control device to enable a preset dangerous process to be in at least one state of forbidden start and forbidden passing; And S8) continuously acquiring clear distance data and carrying out deblocking judgment after receiving in-place feedback of the sealing control, and executing deblocking and recovering at least one of starting authority and passing authority of the preset dangerous process when the global minimum clear distance is not smaller than a preset deblocking clear distance threshold and continuously longer than a preset stability window time, the global reliability index is not lower than a preset reliability threshold, and the clear distance approximation rate is lower than a preset deblocking rate threshold, wherein the deblocking clear distance threshold is larger than the sealing control clear distance threshold.
9. The method of claim 8, wherein the at least three measurement profiles include at least a measurement profile corresponding to a mid-span of the inter-pile beam and two measurement profiles adjacent to both sides of the pile-to-beam connection node.
10. The method of claim 8, wherein the reliability assessment includes at least any of a continuous lack of time exceeding a lack of time threshold to reduce a global reliability indicator, a clear distance difference between adjacent samples exceeding a jump threshold to reduce a global reliability indicator, a clear distance mean shift exceeding a drift threshold to reduce a global reliability indicator within a predetermined time window, and a time interval between a current sampling time and a calibration time stamp exceeding a calibration validity period to reduce a global reliability indicator.

Description

Municipal road foundation pit pipeline clear distance monitoring and sealing control system, method and assembly Technical Field The invention relates to the technical field of municipal engineering construction safety management and underground pipeline protection, in particular to a municipal road foundation pit pipeline clear distance monitoring and sealing control system, method and assembly. Background When the municipal road foundation pit is constructed, pipelines such as water supply and drainage, fuel gas, heat, electric power communication and the like are often arranged underground. The foundation pit excavation, precipitation and construction load can change the stress state of the soil body, and stratum deformation is caused, and the supporting structure can also displace or rotate along with the soil body, so that the relative position between the foundation pit structure and the existing pipeline is changed. When the interval between the two is continuously reduced or the change is out of control, the problems of extrusion, tension, loosening and leakage of the joint and the like of the existing pipeline can occur, and secondary risks such as road subsidence, gas leakage and the like can be caused when the problems are serious. Therefore, in foundation pit construction near existing pipelines, continuous monitoring of the associated risk is required, and control measures are taken in time when necessary. In the existing engineering, the modes of detection rechecking before construction, manual inspection matching with ruler quantity, periodic observation of a total station or a measuring robot, surface subsidence, support displacement monitoring and the like are adopted, and the methods of collecting data through a sensor and setting a threshold value on a platform are also adopted. The method can provide a certain early warning basis, but has the defects that firstly, deformation is uneven, risk points possibly appear at local positions, the most unfavorable positions are easily leaked when monitoring points are insufficiently distributed, secondly, the construction environment is complex, factors such as slurry, vibration, shielding, rainwater dust and installation and calibration deviation can cause data deletion, abnormal fluctuation or gradual drifting, when the threshold value is simply relied on for warning, false report and false report are difficult to control, thirdly, the connection between a monitoring result and field treatment is not tight, and in many cases, manual judgment, manual shutdown and enclosure are still needed, and whether the implementation is in place or not lacks definite feedback. In addition, after taking measures such as shutdown and sealing control, the operation can be restored when the operation is difficult. The scene is usually judged by experience or temporary rules, and the situation that the recovery is too early to bring hidden danger or the recovery is too late to influence the construction period is easy to occur. Based on the above reasons, it is necessary to establish a safety control mode which is more attached to the construction site, so that the monitoring information is more reliable, the risk triggering is more timely, and the disposal action is more verifiable, thereby improving the safety and controllability of foundation pit construction adjacent to the existing pipeline. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a system for monitoring and sealing the safety clearance of existing pipelines of municipal road foundation pit, comprising: The clear distance measuring assembly is used for collecting clear distance data between the foundation pit supporting member and the existing municipal pipeline; An edge gateway controller in communication with the clear distance measurement assembly, the edge gateway controller configured to obtain clear distance data at least three measurement sections axially distributed along the existing municipal pipe, wherein each measurement section includes at least a first clear distance measurement point and a second clear distance measurement point; obtaining minimum clearance between the first clearance measuring point and the second clearance measuring point, obtaining minimum clearance between the sections, calculating clearance approximation rate, dividing the clearance approximation rate by the time difference between adjacent sampling moments after subtracting the global minimum clearance between the sampling moments from the global minimum clearance between the sampling moments, performing reliability evaluation based on at least one of missing measurement, jump, drift and calibration effective period of the clearance data to obtain global reliability index, and outputting a sealing command when any sealing condition is satisfied, wherein the global minimum cleara