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Method for determining unknown goaf range and old goaf residual settlement

A technology for residual settlement and gobs, applied in instrumentation, height/horizontal measurement, surveying and navigation, etc., can solve problems such as lack of pertinence, blindness of drilling and geophysical objects, and achieve accurate real characteristics, reduced dependence, strong practical effect

Active Publication Date: 2018-12-18
深科空间(青岛)建设工程技术有限公司
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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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  • Method for determining unknown goaf range and old goaf residual settlement

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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 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, goaf surface rock movement, subsidence monitoring historical data, the specific collection of data is 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 condition...

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Abstract

The invention belongs to the technical field of the high-speed railway geological disaster, and specifically relates to a method for determining unknown goaf range and old goaf residual settlement. The method comprises the following steps: firstly collecting goaf related documents such as peripheral coal seam distribution, mining and coverage resource coditions, and then drawing a settlement cloudatlas, and determining a suspicious goaf range; treating the suspicious goaf range by adopting the PSP-InSAR deformation measurement technology; form the suspicious goaf region delineated by the InSAR technology measurement, initially determining a fact that the goaf is existent under the region if the goaf abnormity is detected by using the geophysical prospecting technology measure, and performing the drilling; and performing indoor physical mechanics test for a sample taken out through drilling, and acquiring the mechanics parameter of each stratum covered on the goaf, thereby preparing for the subsequent modelling; performing precise modelling, performing mutual verification on a numerical analysis result and the settlement result of the InSAR, finally obtaining the influence range and the residual settlement of the old goaf. The method disclosed by the invention is scientific in design, accurate in measurement result, friendly in application environment, and wide in market prospect.

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 Applications(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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