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Thick and hard top plate rock burst and gas complex disaster comprehensive control method

A technology of rock burst and comprehensive prevention and control, applied in gas discharge, ground mining, earthwork drilling and mining, etc., can solve problems that are not combined for comprehensive consideration, achieve high technology and economy, reduce possibility, and reduce coal seam gas The effect of content

Inactive Publication Date: 2020-01-03
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the research on combined hazards of rock burst and gas under thick and hard roofs, most of the existing rock burst and gas emission mechanisms, predictions, and control methods are measures for one of them, and do not combine the two to consider comprehensively

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  • Thick and hard top plate rock burst and gas complex disaster comprehensive control method
  • Thick and hard top plate rock burst and gas complex disaster comprehensive control method
  • Thick and hard top plate rock burst and gas complex disaster comprehensive control method

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Embodiment Construction

[0034] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0035] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to a thick and hard top plate rock burst and gas complex disaster comprehensive control method, which belongs to the technical field of mine and underground construction control.The method includes the following steps: adopting large-aperture dense drilling holes to relieve pressure to a coal body, meanwhile, constructing small-aperture gas extraction drilling holes to extract gas to a working face coal body; after going through for a certain time, evaluating the governance effect to the complex disasters of the working face, and if the evaluation result reaches the standard, immediately starting stopping on the working face; during stopping on the working face, adopting a top plate ahead presplitting blasting to relieve pressure to the top plate of the working face;adopting a goaf pipe insertion extraction method if the gas density of an upper corner is still higher during stoping on the working face. According to the invention, the possibility of rock burstingis reduced, and gas content of the working face can be effectively reduced, so that the gas discharge intensity of the working face during stopping can be reduced, and higher technical and economicalvalues are obtained.

Description

technical field [0001] The invention belongs to the technical field of prevention and control of mines and underground engineering, and relates to a method for comprehensive prevention and control of combined rockburst and gas disasters of thick and hard roofs. Background technique [0002] The occurrence of gas disaster accidents has caused a large number of casualties and property losses, seriously restricting the safe production of mines. In recent years, as my country's coal mines have gradually shifted from shallow to deep horizontal mining, coal-rock dynamic disasters in deep areas have become more and more serious. The factors for the occurrence of gas disasters have become more complex, and there is a trend of coupling gas disasters with other disasters. Especially when there is a thick and hard roof above the coal seam, the occurrence of rock bursts will cause mine pressure to appear and abnormal gas to flow out, posing a serious threat to the safe mining of the wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00E21C41/18
CPCE21C41/18E21F7/00
Inventor 张锋王振赵旭生马智勇程建圣孙炳兴向衍斌黄光利李大勇何云文刘俊冉庆雷李志恒
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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