Method and apparatus measuring ground settlement

A technology of land subsidence and measurement method, which is applied in the direction of buoy liquid level indicator, etc., can solve the problems of poor measurement accuracy, time-consuming and laborious, and difficult to realize, and achieve the effects of improving measurement accuracy, reducing workload, and simple structure

Inactive Publication Date: 2006-02-08
INST OF MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] At present, the monitoring methods of land subsidence mainly include the following types: level measurement, GPS positioning and total station measurement, etc. Among them, the level measurement method is time-consuming and laborious, and sometimes affects the construction work on site, and sometimes it is difficult due to the limitation of site conditions. Realization; GPS positioning and total station measurement are limited by weather conditions, and the GPS positioning system has a large amount of data processing and poor measurement accuracy

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  • Method and apparatus measuring ground settlement

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Embodiment Construction

[0021] figure 1 In the process, first fill the connecting pipe 2 and the connecting pipe 3 with water, then connect the water storage cylinder 1, continue to inject water so that there is water of a certain depth in the water storage cylinder 1, and then fix the water surface displacement measuring device on the water storage cylinder 1. Generally, the measuring point n is installed in a place where there is no ground subsidence. If there is subsidence, a level can also be used to measure it. Like this, if ground subsidence occurs at a certain measuring point or some measuring points, the water level in the water storage tank 1 will change, because the draft of the float 53 in the water is certain, so the change of the water level in the water storage tank 1 will drive the wheels 52 rotates, measure the displacement of float by angular displacement sensor 51 then. According to the change of the position of the float 53 at each measuring point, the settlement amount of each me...

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Abstract

The invention discloses a measuring method of ground depression value, which comprises: separately arranging a plurality of interconnected liquid storage drums with right amount liquid on the tested point; arranging a plumb on each liquid storage drum which can be floated by balanced weight; when the test point occurs after ground depression, it measures the plumb height change of each test point; using one liquid storage drum as base drum and computing the ground depression value of each test point by the plumb change value of each test point and the ground depression value of the base drum. The invention also discloses the device of the method which comprises the liquid storage drums with right amount liquid on the tested point, the plumb on each liquid storage drum which can be floated by balanced weight, wherein the liquid storage drum is connected with each other by pipes.

Description

technical field [0001] The invention relates to the field of geological survey, in particular to a method and a device for measuring ground subsidence. Background technique [0002] Land subsidence refers to the phenomenon that the ground level decreases within a certain surface area. Crustal movement, mining of mineral deposits or natural gas, and extraction of groundwater can all cause land subsidence. Large changes in ground elevation in some areas in a short period of time will cause serious damage to houses, underground pipes, roads, bridges and dams, etc. The continuous subsidence of the ground in cities and industrial areas will even endanger the safety of the entire city and industrial areas. Safety. At present, land subsidence has caused serious losses to the safety of life and property of the country and people. Therefore, it is very necessary and meaningful to monitor and forecast land subsidence. [0003] At present, the monitoring methods of land subsidence ma...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/30G01F23/40
Inventor 孟祥跃李世海王兴昆
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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