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Determination method of overburden fault zone height based on plate and shell theory in filling mining

A technology of plate and shell theory and determination method, applied in mining equipment, mining equipment, earthwork drilling, etc., can solve problems such as the inability to give the development degree and stop development position of overlying fault zones, and restricting the prevention and control of overlying rock damage.

Active Publication Date: 2017-08-25
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology

However, the previous theories cannot provide systematic and complete analysis methods and data support for the development degree and stop development position of the overlying rock fault zone under the condition of filling mining, which restricts the prevention and control of overlying rock failure disasters under the condition of filling mining

Method used

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  • Determination method of overburden fault zone height based on plate and shell theory in filling mining
  • Determination method of overburden fault zone height based on plate and shell theory in filling mining
  • Determination method of overburden fault zone height based on plate and shell theory in filling mining

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Embodiment Construction

[0038] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0039] In the embodiment of the present invention, based on the plate and shell theory, the method for determining the height of the overburden fault zone in filling mining, the method flow chart is as follows figure 1 As shown, the method includes the following steps:

[0040] Step 1. From the top layer in the mine to the surface, determine the position of the hard rock layer layer by layer;

[0041] The hard rock formation refers to the rock formation whose deformation deflection is smaller than that of the underlying rock formation and does not coordinately deform with the underlying rock formation. Assuming that the first layer of rock formation is a hard rock formation, the upper layer up to the nth layer of rock layer deforms in harmony with it, while the n+1th layer of rock formation does not coordinate with it. Coordinated deformation, then th...

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Abstract

The invention belongs to the field of strata control in coal mine filling and mining, and in particular relates to a method for determining the height of a fractured zone of overlying strata in filling mining based on the plate and shell theory. The method first judges the position of a hard rock stratum, and secondly obtains the critical load and limit displacement of the hard rock stratum, and then Obtain the height of the free space below the hard rock layer and the overlying load of the hard rock layer, and judge whether the fault zone is developed by comparing the critical load with the overlying load of the hard rock layer, the limit displacement and the height of the free space below the hard rock layer; the basic parameters involved in this method , can be obtained according to geological data, laboratory tests and other methods after the mining design of the working face is completed. Disasters caused by destruction, the present invention has wide practicability in analyzing the law of overburden rock activity in filling mining.

Description

technical field [0001] The invention belongs to the field of rock formation control in coal mine filling mining, and in particular relates to a method for determining the height of a fault zone in filling mining based on the plate shell theory. Background technique [0002] The overlying rock activity is caused by the mining of the underground coal seam; when the coal seam is mined, the stress balance of the underground original rock is destroyed, and the rock layer begins to move and deform, and this phenomenon will continue to pass upward until a new equilibrium state is reached ; For a long time, various related theories in the field of rock formation control have emerged in an endless stream, such as: the former Soviet Union's Hyprut and Awelshin proposed the roof "arch" structure; Polish scholar Litvenishin and others applied granular mechanics A stochastic medium theory method for predicting rock formation and surface subsidence was established; Liu Changyou, a Chinese...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/00
Inventor 杨艳国秦洪岩王猛高仙朱洪涛李洋范楠牛德林陈波
Owner LIAONING TECHNICAL UNIVERSITY
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