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Precise dynamic monitoring method for fractures of mining subsidence land and measuring device

A technology for mining subsidence and dynamic monitoring, which is used in measuring devices, height/level measurement, surveying and mapping, and navigation, etc., can solve the problems of inconvenient preservation, complicated structure, and large degree of damage, and achieve the effect of obvious effect and simple structure.

Inactive Publication Date: 2017-08-18
HENAN POLYTECHNIC UNIV
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Problems solved by technology

These monitoring devices can reflect the activities of ground fissures to a certain extent or accuracy, but their disadvantages lie in the large degree of damage to the rock and soil structure around the ground fissures, complex structures, low precision, and inconvenient preservation.

Method used

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  • Precise dynamic monitoring method for fractures of mining subsidence land and measuring device
  • Precise dynamic monitoring method for fractures of mining subsidence land and measuring device
  • Precise dynamic monitoring method for fractures of mining subsidence land and measuring device

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Embodiment Construction

[0017] Referring to the accompanying drawings, specific embodiments of the present invention will be described in detail.

[0018] Analyze the mining and mining situation of the mine, conduct on-the-spot investigations to grasp the location and distribution of ground fissures, the terrain and topography at the location of the cracks, and save image data and draw sketches to provide a basis for monitoring ground fissure measuring points.

[0019] The monitoring piles are processed according to the features of the ground and topography where the ground fissures are located. Considering the loss of materials, the number of processing piles is 1.2 times that of the designed ones. The specific size and shape of the processing are explained with reference to the accompanying drawings.

[0020] Use a hammer to hammer the prefabricated steel bar measuring point into 20-40cm on both sides of the ground fissure. For the convenience of future observation, the monitoring point is 2-3cm ab...

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Abstract

The invention designs a precise dynamic monitoring method for fractures of a mining subsidence land and a measuring device. The measuring device comprises steel-bar measuring points respectively fixed at the two sides of a ground surface fracture; small holes are formed in the steel-bar measuring points and are used for erecting instruments for measuring the elevation and a plane coordinate; and the instruments are an electronic level gauge with precision at mm order and a GNSS RTK (Global Navigation Satellite System Real Time Kinematic). The precise dynamic monitoring method and the measuring device designed by the invention have the advantages that the advantages of precise and fast satellite monitoring and optical monitoring and simple and easy implementation of the steel-bar measuring points are fully integrated; the defects that three-dimensional deformation of the fracture cannot be conveniently and accurately measured due to the own defects of structure and accuracy of the device in the existing measuring method for the fractures of the mining subsidence land are overcome, the limitation of the existing measuring method in the use range is avoided, and simultaneously the irreversible disturbance of concrete piles or other fixing devices buried at the two sides of the ground surface fracture is reduced to greatest extent, so that the promotion and practical value is good.

Description

technical field [0001] The invention relates to a method for measuring ground fissures, in particular to a method for accurately and dynamically monitoring ground fissures in mining subsidence and a measuring device. Background technique [0002] Human activities such as mining, engineering construction, blasting and other mining often cause damage and instability of rock and soil mass, resulting in the occurrence of surface cracks. The location where the cracks appear is the stress concentration area of ​​the rock and soil mass or the place where the strength is relatively low. This may also be a precursor to geological disasters such as ground subsidence and subsidence. Its development and changes will naturally affect normal mine production and traffic roads. As well as the safety of surface buildings, therefore, mastering its change trend is an important basis for engineering and technical personnel to take corresponding preventive and reinforcement measures in time. It ...

Claims

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Application Information

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IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 李亚涛郭文兵李雪峰李新岭
Owner HENAN POLYTECHNIC UNIV
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