Method for detection and prevention of sandstone fissure water in roof sandstone of fully mechanized caving mining face with large mining depth and large span

A coal mining face, large-span technology, applied in mining equipment, earth-moving drilling, mining equipment, etc., can solve the problems of sandstone fissure water and water hazards, and achieve the effect of ensuring safe mining and reasonable analysis.

Inactive Publication Date: 2018-09-14
XIAN UNIV OF SCI & TECH +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a large mining depth, long span fully mechanized caving coal mining face roof sandstone fissure water detection method, which solves the sandstone fissures of the large mining depth, long span fully mechanized caving face existing in the prior art water damage threat

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  • Method for detection and prevention of sandstone fissure water in roof sandstone of fully mechanized caving mining face with large mining depth and large span
  • Method for detection and prevention of sandstone fissure water in roof sandstone of fully mechanized caving mining face with large mining depth and large span
  • Method for detection and prevention of sandstone fissure water in roof sandstone of fully mechanized caving mining face with large mining depth and large span

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The present invention provides a large mining depth, large span fully mechanized caving coal mining face roof sandstone fissure water detection method, which is specifically implemented according to the following steps:

[0025] (1) Pre-mining geophysical prospecting

[0026] Such as figure 1 As shown, after the underground coal mining working face 101 is formed, the underground ultra-high density three-dimensional resistivity method is used to detect the water-rich area of ​​the overlying strata on the working face and the sandstone aquifer above the side of the roadway, as shown in Figure 2-Figure 4 As shown, specifically, the electrodes of the potential device are arranged at the positions of the upper lane 103, the lower lane 105, and the incision 104 of the working face, the electrode point distance is 10m, and the electrode poi...

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Abstract

The invention discloses a large-mining depth and long-span fully-mechanized top-coal caving face roof sandstone fracture water detecting and preventing method. The method comprises the steps of geophysical exploration before mining, drilling inspection, safety evaluation, push-gather monitoring, and comprehensive analysis after mining to determine the law of development and the height of a large-mining depth and long-span working face diversion fissure zone and guide detection and prevention of the working face recovery sandstone fracture water within a well field. The large-mining depth and long-span fully-mechanized top-coal caving face roof sandstone fracture water detecting and preventing method is used for effectively solving the water disaster threat of the large-mining depth and long-span fully-mechanized caving face sandstone fracture water by virtue of geophysical exploration before mining, drilling inspection, safety evaluation, push-gather monitoring, and comprehensive analysis after mining.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a detection and prevention method for sandstone fissure water on the roof of a fully mechanized caving coal mining face with large mining depth and large span. Background technique [0002] At present, with the continuous deepening of coal seam mining, modern coal mining equipment is adopted for large thickness coal seam mining, and the influencing factors such as mining depth, post-mining, coal mining technology, roof rock lithology, working face inclination, pushing speed, and working face span are all affected. It affects the development mechanism and height of the water-conducting fissure zone on the roof. Since the coal-bearing strata of the Shanxi Formation are covered by extremely thick sandstone and conglomerate aquifers, the development height of the water-conducting fracture zone, mining disturbance, and migration of surrounding rocks on the roof are all impo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/00
CPCE21F17/00G01V11/00
Inventor 牛超邱梅朱鲁施龙青
Owner XIAN UNIV OF SCI & TECH
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