Coal mine multi-layer key layer fracture type mine earthquake energy calculation and maximum mine earthquake prediction method

Abstract

The invention provides a coal mine multi-layer key layer fracture type mine earthquake energy calculation and maximum mine earthquake prediction method, and belongs to the technical field of coal mine earthquake prediction. The method comprises the following steps: firstly, determining an overlying rock layer on a coal mining working face according to a drill hole near the working face, dividing a key layer, and determining a step pitch and other parameters of the fracture of the key layer; then calculating energy generated when each key layer is fractured according to a mine earthquake energy calculation formula and converting the energy into a corresponding Leeb earthquake magnitude, and the mine earthquake generated when the maximum main key layer is fractured serving as the predicted maximum mine earthquake in the production process of the working face, so that formulation of earthquake prevention and impact reduction measures in the actual production process of a mine is guided, the mine earthquake disaster is prevented and controlled from being passively changed into actively. The method is high in efficiency, economical, safe, targeted and suitable for mine earthquakes induced by fracture of multiple key layers.

Description

technical field [0001] The invention relates to the technical field of coal mine earthquake prediction, in particular to a mine earthquake energy calculation method and a maximum mine earthquake prediction method for multi-layer key layer fracture type mine earthquakes. Background technique [0002] my country is a country seriously affected by mining earthquakes. In some mines, mining earthquakes have become one of the most important disasters. It not only hinders the production of mines, but also threatens the safety of mine personnel and property. [0003] However, the management of coal mine earthquake disasters at the present stage needs further development and improvement. At present, the magnitude and energy of mining earthquake disaster accidents are generally obtained through monitoring instruments, and the calculation formulas for mining earthquake energy and magnitude have not been given theoretically. Therefore, mine earthquake disaster accidents can only occur "...

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Problems solved by technology

[0003] However, the management of coal mine earthquake disasters at the present stage needs further development and improvement. At present, the magnitude and energy of mining earthquake disaster accidents are generally obtained through monitoring instruments, and the calculation formulas for mining earthquake energy and magnitude have not been given theoretically. Therefore, mining earthquake disaster accidents can only occur "first", and "later" are received by monitoring instruments, so it is impossible to predict and forecast mine earthquakes, and mines can only take some "non-targeted and inefficient" earthquake prevention and disaster reduction measures

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