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A Method for Determining the Range of Unknown Goaf and Residual Settlement of Old Goaf

A residual subsidence and goaf technology, applied in the directions of instruments, height/level measurement, surveying and navigation, etc., can solve the problems of untargeted, blind drilling and geophysical objects, etc., and achieve the effect of accurate reflection

Active Publication Date: 2021-08-24
深科空间(青岛)建设工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the existing technology, the evaluation of goaf range and residual settlement is usually only judged by drilling and geophysical prospecting, so it is only suitable for determining small-scale goafs, and the drilling and geophysical prospecting objects are relatively blind and untargeted

Method used

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  • A Method for Determining the Range of Unknown Goaf and Residual Settlement of Old Goaf

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Embodiment 1

[0026] In order to better illustrate the present invention, this embodiment takes the line selection and feasibility study before a certain high-speed railway crosses the goaf as an example to further illustrate the method described in the present invention. The determination of the unknown goaf involved in this embodiment The scope of the area and the method of the residual settlement of the old goaf are specifically carried out in accordance with the following steps:

[0027] S1. Collect relevant data of the goaf

[0028] Collect coal mine related mineral geological exploration, coal mine resource exploitation and utilization, goaf, surface rock movement in goaf, subsidence monitoring historical data, the specific collection data are as follows:

[0029]① Geological and mining conditions: mining boundary, mining depth, coal seam occurrence and thickness, mining method, roof management method, roof, floor and overlying strata lithology and information;

[0030] ②Related cond...

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Abstract

The invention belongs to the technical field of high-speed railway geological disasters, and specifically relates to a method for determining the range of an unknown goaf and the residual settlement of an old goaf. First, relevant data on the goaf are collected, such as the distribution of surrounding coal seams, mining and overburden resources, and then Draw a settlement cloud map and determine the range of suspected goafs; use PSP‑InSAR deformation measurement technology to process the range of suspected goafs. For the areas suspected to have gobs delineated by InSAR technology measurement, if geophysical prospecting techniques also detect If the goaf is abnormal, it can be preliminarily determined that there is a goaf under the area and drilling is carried out, and the indoor physical and mechanical tests are carried out on the samples taken out of the drilling to obtain the mechanical parameters of the layers above the goaf for subsequent modeling Prepare; finally carry out accurate modeling, numerical analysis results and InSAR settlement results are mutually verified, and finally the influence range and residual settlement of the old goaf are obtained. broad.

Description

Technical field: [0001] The invention belongs to the technical field of high-speed railway geological disasters, and in particular relates to a method for determining the range of an unknown goaf and the residual settlement of an old goaf. Background technique: [0002] The research and observation of gob settlement started earlier in foreign countries, especially in developed countries such as Belgium, the former Soviet Union, Poland, Germany, Australia, Canada, and the United States, which have carried out in-depth research on the theory and practice of mining subsidence. As early as 1867 German engineers [0003] A. Schulz put forward the views of rupture angle and the necessary pillar size to protect the surface. Since then, countries have gradually carried out systematic measurement and observation of mining subsidence. The United Kingdom began to observe the movement deformation in 1930 and discovered the relationship between observation and surface deformation in 1950...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 王旭春于云龙管晓明冯磊
Owner 深科空间(青岛)建设工程技术有限公司
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