Coal seam impact type mine earthquake prevention and control method
A coal seam, prevention and control technology, applied in surface mining, earthwork drilling, underground mining, etc., can solve the problems of rock-burst mine shocks that are difficult to control, reduce impact-type mine shocks, and prevent and control impact-type mine shocks. Effect
Inactive Publication Date: 2017-02-22
SHANDONG UNIV OF SCI & TECH
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[0003] The purpose of the present invention is to propose a new coal seam impact type mine earthquake prevention and control method for the problem that the rock burst type mine earthquake is difficult to control, so as to achieve the purpose of reducing the mine earthquake and making the formation stable for a long time
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[0013] figure 1 It is a schematic diagram of the layout of the embodiment of the present invention. It can be seen from the figure that in the stop line area of the mining earthquake protection zone, the high stress area range is determined, and two pressure relief roadways are excavated along the stop line direction within this range. As a man-made space; large-diameter intensive drilling was carried out on the coal walls of working face 1, working face 2 and working face 3 to relieve pressure; deep-hole blast holes were arranged in the roadways and chamber sides after the stop of mining, and the rest were in accordance with the invention The steps of the content can be implemented and will not be repeated here.
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The invention discloses a coal seam impact type mine earthquake prevention and control method. The method comprises the steps that a high-stress region range is determined in a stopping line region of a mine earthquake protection region, and two pressure relief roadways are dug in the direction of the stopping line within the range to be adopted as the artificial space; large-diameter intensive drilling pressure relief is performed on a coal wall of the working face; deep hole explosion holes are evenly distributed on roadways and chamber sides after coal mining stopping. Due to the fact that the large space is manufactured inside high-stress coal body, stress distribution is changed, and energy is greatly released; pressure relief of the coal wall on the periphery of the mining stopping working face and roadway deep-hole blasting are performed, impact energy is sufficiently released, and impact type mine earthquakes are reduced, prevented and controlled fundamentally.
Description
technical field [0001] The invention belongs to the technical field of coal mining. Background technique [0002] In coal mining, when mining dangerous coal seams with rock burst, it is often accompanied by the occurrence of destructive rock burst. When the energy of rock burst reaches a certain level, there will be vibrations reaching the surface, which are usually called shock-type mine earthquakes. . Many coal mines in my country were built in the 1950s and 1960s, with a large mining area, and gradually entered deep mining. For old mines, mining earthquakes are prone to occur in some goafs that have stopped mining. This type of mining earthquake is difficult to prevent, and it is impossible to deal with it in the later stage. Moreover, the mining space of old mines is large, and the rock formations are disturbed frequently and in a large range. Mine shocks are most likely to occur after repeated movement damage. The management of mining earthquakes under such condition...
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Login to View More IPC IPC(8): E21C41/18F42D3/00F42D1/00
CPCE21C41/18F42D1/00F42D3/00
Inventor 潘立友
Owner SHANDONG UNIV OF SCI & TECH
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