A foundation pit periphery ground settlement monitoring system and early warning method

Abstract

The application relates to the technical field of foundation pit peripheral ground subsidence monitoring, in particular to a foundation pit peripheral ground subsidence monitoring system and an early warning method, which comprises the following steps: establishing a terminal control system, automatically monitoring a water pump in real time, obtaining the total quantity of water pumping and precipitation of the foundation pit peripheral ground, obtaining geological survey report data, establishing a foundation pit peripheral ground subsidence model, establishing the foundation pit peripheral ground subsidence model according to the seepage principle of soil mechanics and in combination with the geological survey report data of the foundation pit peripheral ground, obtaining foundation pit peripheral ground subsidence data, and performing foundation pit peripheral ground subsidence early warning by the terminal control system. The foundation pit peripheral ground subsidence monitoring system and the early warning method can early perceive possible geological disasters of the foundation pit periphery, facilitate early making of more targeted technical measures, and reduce losses caused by the geological disasters.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pit surrounding ground settlement monitoring, in particular to a foundation pit surrounding ground settlement monitoring system and early warning method. BACKGROUND

[0002] Foundation settlement refers to the subsidence of the ground surface caused by the compaction of the foundation soil layer under the action of additional stress. Excessive settlement, especially uneven settlement, can cause buildings to tilt, crack and even be unable to be used normally. The existing foundation settlement prediction method is limited by the large discrepancy between the assumed conditions and the actual conditions, and the obtained settlement prediction results often have large differences with the measured settlement values. The research on the foundation settlement prediction method needs further development.

[0003] Before the construction of buildings and earth structures, self-weight stress caused by the gravity of the soil body already exists in the foundation. The load of the building and earth structure is transmitted to the foundation through the bottom surface of the foundation or embankment, which changes the original stress state of the natural soil layer. Under the action of additional three-directional stress components, vertical, lateral and shear deformations occur in the foundation, resulting in vertical and lateral displacements of each point. The vertical deformation of the foundation surface is called foundation settlement, or foundation subsidence. The traditional foundation pit surrounding ground settlement monitoring has the characteristics of insufficient early warning capability, short early warning time and complex monitoring equipment. When geological disasters occur, there is a lack of targeted technical measures to support the workers. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a foundation pit surrounding ground settlement monitoring system and early warning method, which can early perceive possible geological disasters around the foundation pit, facilitate early making more targeted technical measures, and reduce the loss caused by geological disasters.

[0005] To solve the above technical problems, the present application adopts the following technical solutions:

[0006] A foundation pit surrounding ground settlement early warning method, comprising

[0007] A terminal control system is established for connecting corresponding devices and controlling and data collecting and analyzing the devices connected thereto;

[0008] The water pump is automatically monitored in real time, a water pumping point is selected around the foundation pit ground, a water pump is installed, the working condition of the water pump is automatically monitored in real time, real-time monitoring data of the water pump is obtained, and the real-time monitoring data is transmitted to the terminal control system;

[0009] The total quantity of pumping and dewatering of the ground surface around the foundation pit is obtained, the real-time monitoring data of the water pump is combined with the rated power of the water pump, and the total quantity of pumping and dewatering of the ground surface around the foundation pit is calculated by the terminal control system;

[0010] The geological survey report data is obtained by conducting geological survey on the ground surface around the foundation pit.

[0011] The ground surface settlement model around the foundation pit is established, and the ground surface settlement model around the foundation pit is established according to the seepage principle of soil mechanics and the geological survey report data of the ground surface around the foundation pit.

[0012] The ground surface settlement data around the foundation pit is obtained, the total quantity of pumping and dewatering of the ground surface around the foundation pit is input into the ground surface model around the foundation pit, and a compensation constant is added. The terminal control system automatically calculates the soil compression caused by the change of the water content in the soil, i.e. the ground surface settlement data around the foundation pit.

[0013] The ground surface settlement around the foundation pit is warned, and an alarm threshold is established in the terminal control system. When the ground surface settlement data around the foundation pit reaches the alarm threshold, the terminal control system warns the ground surface settlement around the foundation pit.

[0014] Further, the geological survey report data includes soil quality, water content, normal water level and seepage parameter data of the soil.

[0015] Further, the compensation constant includes the funnel effect constant after the foundation pit is excavated, the land relaxation constant, the seepage change constant and the surrounding water supply constant.

[0016] A ground surface settlement monitoring system around a foundation pit comprises

[0017] The control terminal module is used for obtaining the monitoring data of the connected devices for analysis and processing, and controlling the connected devices.

[0018] The water pump real-time monitoring module is used for obtaining the real-time monitoring data of the water pump and transmitting the monitoring data to the control terminal module to obtain the total quantity of pumping and dewatering of the ground surface around the foundation pit.

[0019] The data survey module is used for obtaining the geological survey report data of the ground surface around the foundation pit by conducting geological survey on the ground surface around the foundation pit.

[0020] The ground surface settlement model around the foundation pit is established, and the ground surface settlement model around the foundation pit is established according to the seepage principle of soil mechanics and the geological survey report data of the ground surface around the foundation pit.

[0021] The foundation pit surrounding ground settlement data acquisition module inputs the total pumping and precipitation quantity of the foundation pit surrounding ground into the foundation pit surrounding ground model, and then adds a compensation constant, so that the terminal control module automatically calculates the soil compression quantity caused by the change of the land water content, that is, the foundation pit surrounding ground settlement data.

[0022] The beneficial effects of the present application are as follows: in actual use, a complete terminal control system needs to be established first, a general industrial computer can be used as the core to build the system, and then the water pump is monitored in real time and automatically, the rated power of the water pump is combined, the total pumping and precipitation quantity of the surrounding ground of the foundation pit is directly calculated, then the surrounding ground of the foundation pit is geologically surveyed to obtain the geological survey report data, finally, the foundation pit surrounding ground settlement model is established according to the seepage principle of soil mechanics and the geological survey report data of the foundation pit surrounding ground, the total pumping and precipitation quantity of the foundation pit surrounding ground is input into the foundation pit surrounding ground settlement model as a variable, when the foundation pit surrounding ground settlement model is established, the influence of the compensation constant on the calculation result needs to be considered, finally, the foundation pit surrounding ground settlement data is obtained, and the obtained data is compared with the alarm threshold value, when the foundation pit surrounding ground settlement data reaches the alarm threshold value, the terminal control system performs the foundation pit surrounding ground settlement early warning. The foundation pit surrounding ground settlement monitoring system and the early warning method can perceive the possible geological disasters of the foundation pit surrounding ground in advance, facilitate to take more targeted technical measures in advance, and reduce the loss caused by geological disasters. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The flowchart of the present application is shown in the figure;

[0024] Figure 2 The flowchart of the foundation pit surrounding ground settlement monitoring system of the present application is shown in the figure. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of those skilled in the art, the present application is further described below in combination with the embodiments and the drawings, and the content mentioned in the embodiments is not a limitation of the present application.

[0026] As shown in the figure, Figure 1 The present application provides a foundation pit surrounding ground settlement early warning method, which comprises

[0027] The terminal control system is established for connecting the corresponding devices and controlling and data collecting and analyzing the devices connected thereto;

[0028] The water pump is monitored in real time and automatically, the water pumping points are selected around the foundation pit ground, the water pumps are installed, the working conditions of the water pumps are monitored in real time and automatically, the real-time monitoring data of the water pumps are obtained, and the real-time monitoring data are transmitted to the terminal control system;

[0029] The total quantity of pumping and dewatering of the ground surface around the foundation pit is obtained, the real-time monitoring data of the water pump is combined with the rated power of the water pump, and the terminal control system calculates the total quantity of pumping and dewatering of the ground surface around the foundation pit.

[0030] The geological survey report data is obtained by conducting a geological survey on the ground surface around the foundation pit.

[0031] The ground settlement model around the foundation pit is established, the ground settlement model around the foundation pit is established according to the seepage principle of soil mechanics and combined with the geological survey report data of the ground surface around the foundation pit.

[0032] The ground settlement data around the foundation pit is obtained, the total quantity of pumping and dewatering of the ground surface around the foundation pit is input into the ground surface model around the foundation pit, and a compensation constant is added. The terminal control system automatically calculates the soil compression caused by the change of the water content in the soil, that is, the ground settlement data around the foundation pit.

[0033] The ground settlement around the foundation pit is warned, and an alarm threshold is established in the terminal control system. When the ground settlement data around the foundation pit reaches the alarm threshold, the terminal control system warns the ground settlement around the foundation pit.

[0034] In actual use, a complete terminal control system needs to be established first. A general industrial computer can be used as the core to build it, and then the water pump is automatically monitored in real time. By combining the rated power of the water pump, the total quantity of pumping and dewatering of the ground surface around the foundation pit can be directly calculated. Then, the ground surface around the foundation pit is geologically surveyed to obtain the geological survey report data. Finally, according to the seepage principle of soil mechanics, the ground settlement model around the foundation pit is established combined with the geological survey report data of the ground surface around the foundation pit. Then, the total quantity of pumping and dewatering of the ground surface around the foundation pit is input into the ground settlement model around the foundation pit as a variable. When establishing the ground settlement model around the foundation pit, the influence of the compensation constant on the calculation result needs to be considered. Finally, the ground settlement data around the foundation pit is obtained, and the obtained data is compared with the alarm threshold. When the ground settlement data around the foundation pit reaches the alarm threshold, the terminal control system warns the ground settlement around the foundation pit.

[0035] The foundation pit ground settlement monitoring system and early warning method of the present application can early perceive possible geological disasters around the foundation pit, facilitate early targeted technical measures, and reduce the loss caused by geological disasters.

[0036] As shown in Figure 1 The geological survey report data includes soil quality, water content, normal water level, and permeability parameter data of the soil body.

[0037] As shown in Figure 1As shown in the embodiment, the compensation constant includes a funnel effect constant after excavation of the foundation pit, a land relaxation constant, a seepage change constant and a surrounding water supplement constant.

[0038] As shown in the embodiment, the present application provides a kind of ground subsidence monitoring system around foundation pit, it includes Figure 2 As shown in the embodiment, the present application provides a kind of ground subsidence monitoring system around foundation pit, it includes

[0039] Control terminal module is used for obtaining the monitoring data of connected device for analysis and processing, and controlling connected device;

[0040] Pump real-time monitoring module is used for obtaining real-time monitoring data of pump, and transmitting monitoring data to control terminal module, to obtain total quantity of total pumping and precipitation around foundation pit;

[0041] Data survey module is used for obtaining geological survey report data of ground around foundation pit by geological survey of ground around foundation pit;

[0042] Foundation pit surrounding ground subsidence model establishing module is used for establishing foundation pit surrounding ground subsidence model according to seepage principle of soil mechanics and combining with geological survey report data of foundation pit surrounding ground;

[0043] Foundation pit surrounding ground subsidence data obtaining module is used for inputting total quantity of total pumping and precipitation of foundation pit surrounding ground in foundation pit surrounding ground model, adding compensation constant, and automatically calculating soil compression amount caused by change of water content in land in control terminal module, i.e.

[0044] In actual use, control terminal module is mainly central control device, control terminal module obtains total quantity of total pumping and precipitation of ground around foundation pit through pump real-time monitoring module, data survey module is used for obtaining geological survey report data of ground around foundation pit, foundation pit surrounding ground subsidence model establishing module is used for establishing foundation pit surrounding ground subsidence model according to seepage principle of soil mechanics and combining with geological survey report data of foundation pit surrounding ground, and finally inputting total quantity of total pumping and precipitation of foundation pit surrounding ground in foundation pit surrounding ground model, adding compensation constant, and automatically calculating soil compression amount caused by change of water content in land in control terminal module, i.e.

[0045] All technical features in the embodiment can be freely combined according to actual needs.

[0046] The above embodiment is a preferred implementation scheme of the present application, in addition to this, other ways of implementation are also included, without departing from the concept of the technical scheme, any obvious replacement is within the protection scope of the present application.

Claims

1. A method for early warning of ground settlement around a foundation pit, characterized in that: The application relates to a terminal control system for connecting and controlling devices and collecting and analyzing data. The pumping machine is automatically monitored in real time, pumping points are selected on the ground around the foundation pit, pumping machines are installed, the working conditions of the pumping machines are automatically monitored in real time, real-time monitoring data of the pumping machines are obtained, and the real-time monitoring data are transmitted to the terminal control system. The total pumping and dewatering quantity of the ground around the foundation pit is obtained, the real-time monitoring data of the pumping machine are combined with the rated power of the pumping machine, and the terminal control system calculates the total pumping and dewatering quantity of the ground around the foundation pit. The geological survey report data of the ground around the foundation pit are obtained by conducting geological survey on the ground around the foundation pit. The ground settlement model around the foundation pit is established according to the seepage principle of soil mechanics and the geological survey report data of the ground around the foundation pit. The ground settlement data around the foundation pit are obtained, the total pumping and dewatering quantity of the ground around the foundation pit is input into the ground settlement model around the foundation pit, and a compensation constant is added, so that the terminal control system automatically calculates the soil compression quantity caused by the change of the water content in the land, that is, the ground settlement data around the foundation pit. The compensation constant comprises a funnel effect constant after the foundation pit is excavated, a land relaxation constant, a seepage change constant and a surrounding water supplement constant. The terminal control system establishes an alarm threshold, and when the ground settlement data around the foundation pit reach the alarm threshold, the terminal control system gives a ground settlement warning around the foundation pit. The geological survey report data comprise soil quality, water content, normal water level and seepage parameter data of the soil.

2. The method according to claim 1, wherein the method is characterized by: The control terminal module is used for obtaining monitoring data of the connected devices for analysis and processing, and controlling the connected devices.

3. A system for monitoring ground settlement around a foundation pit, characterized by: The pumping machine real-time monitoring module is used for obtaining real-time monitoring data of the pumping machine and transmitting the monitoring data to the control terminal module to obtain the total pumping and dewatering quantity of the ground around the foundation pit. The data survey module is used for obtaining the geological survey report data of the ground around the foundation pit by conducting geological survey on the ground around the foundation pit. The ground settlement model around the foundation pit is established according to the seepage principle of soil mechanics and the geological survey report data of the ground around the foundation pit. The ground settlement data around the foundation pit are obtained, the total pumping and dewatering quantity of the ground around the foundation pit is input into the ground settlement model around the foundation pit, and a compensation constant is added, so that the terminal control system automatically calculates the soil compression quantity caused by the change of the water content in the land, that is, the ground settlement data around the foundation pit. The compensation constant comprises a funnel effect constant after the foundation pit is excavated, a land relaxation constant, a seepage change constant and a surrounding water supplement constant. ​

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