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Method for quickly determining mine microseismic active zone

An active zone and microseismic technology, which is applied in seismology, measuring devices, instruments, etc., can solve the problems of increasing calculation time, hindering the use of microseismic active zones, and being unable to store intermediate results, so as to reduce the amount of calculation and avoid double calculation. The effect of shortening the time

Active Publication Date: 2009-09-23
煤矿瓦斯治理国家工程研究中心 +2
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Problems solved by technology

Since correlation analysis methods are currently unable to store intermediate results, all previous microseismic points must be recalculated for each new microseismic point, so that the calculation time will continue to increase with the increase of microseismic points
The current identification method of microseismic activity zone seriously hinders the use of microseismic activity zone in mine disaster warning

Method used

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  • Method for quickly determining mine microseismic active zone

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Embodiment Construction

[0017] see figure 1 , the mining area is divided into several cuboid cells, and the length, width, and height of the cells are respectively the unit lengths of the x-axis, y-axis, and z-axis; it is based on the size, depth, and calculation accuracy of the mining area. Determine how many cells to divide the mining area into to obtain the length, width, and height of the cells; the division of cells is neat and continuous, and any cell and its adjacent cells are not aligned with each other. The coding of a cell is composed of the coordinates of the cell on the x-axis, y-axis and z-axis. The number of coded digits is obtained by using the formula t=3N, where t is the number of coded digits, and N is a single direction, such as the direction of the x-axis The digits of the total number of units in the x-axis, y-axis and z-axis are the same; if the total number of units in the x-axis direction is between 100 and 1000, the units in the y-axis and z-axis directions The total number ...

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Abstract

A method for quickly determining mine microseismic active zone includes the following steps of: a. establishing a three-dimensional system of coordinate in a mining area to be measured with all points in the mining area having positive value in the system; b. dividing the mining area into a plurality of cuboid cells, wherein each cell has only one definite code in the system; c. recording each time of microseism according to the code of the cell in which the microseismic point is and determining the cell as an active unit; and d. comparing the codes of all active units, and if the codes of two or more active units are adjacent to each other, subsequently determining the area corresponding to the active units as a microseismic active zone. Through the division of cells, the method establishes the relation between the cells and the microseismic points and can determine whether the active units are adjacent to each other through simple comparison, thus being capable of quickly determining the microseismic active zone. The method greatly shortens the time for determining active zones and offers a sound guarantee for safe production of mines.

Description

Technical field: [0001] The invention relates to a method for determining a mine microseismic activity zone. Background technique: [0002] Microseisms are small vibrations that occur when rocks are destroyed or rocks are under stress. During the mining process, its location, frequency and distribution in the mine are unevenly distributed due to the differences in the local rock and geological conditions of the mining area. The microseismic activity zone represents the area where the microseismic activity is relatively concentrated. It itself not only represents the fracture zone of rocks, but also the area where various gases and liquids gather. Its distribution, change and development are directly related to mine dynamic disasters. The determination of microseismic activity zones has been used at home and abroad to warn and forecast mine disasters and avoid the loss of personnel and property caused by disasters. [0003] At present, the method of determining the microse...

Claims

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Application Information

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IPC IPC(8): G01V1/00
Inventor 袁亮杨本才
Owner 煤矿瓦斯治理国家工程研究中心
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