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Coal mine pressure bump predicting and forewarning method

A technology of rock burst and coal mine, applied in the field of prediction and early warning of rock burst in coal mine

Active Publication Date: 2018-11-13
中煤能源研究院有限责任公司 +1
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  • Application Information

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Problems solved by technology

At present, domestic research on the occurrence mechanism of rock burst, monitoring and early warning, and prevention and control measures continues to deepen. However, in the actual production process, further research is needed on the identification of the possibility of on-site rock burst occurrence, early warning, and early warning index construction.

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  • Coal mine pressure bump predicting and forewarning method
  • Coal mine pressure bump predicting and forewarning method
  • Coal mine pressure bump predicting and forewarning method

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Embodiment Construction

[0081] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0082] Such as figure 1 As shown, a kind of coal mine rock burst prediction and early warning method provided by the present invention, its specific steps are as follows:

[0083] Step 1: The target mine involved in this embodiment is subjected to impact risk assessment before mining at the working face, and the evaluation result is medium impact risk, and a microseismic monitoring system has been established on site before mining;

[0084] Step 2: The object of prevention and control of rock burst in the target mine involved in this embodiment is the 31102 working face, which is the second mining face of the mine, and the measured microseismic events in the mining process of the 31102 working face are taken as the analysis object. The daily energy of each microseismic event is accumulated during the mining process of the 311...

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Abstract

The invention discloses a coal mine pressure bump predicting and forewarning method. The coal mine pressure bump predicting and forewarning method comprises the following steps that a micro shock monitoring system is established based on the outcome of the working face impact risk evaluation; whether periodicity of total energy peakof daily micro shock events exists is determined; abnormal peak days of daily micro shock events are divided; periodic interval of the total energy peak of the daily micro shock events is divided; peak periodic intervalis adjusted; total energy mean value of adjusted peak periodic interval is recalculated; peak day spacing range is determined; pressure bump forewarning is conducted; and forewarning index is continuously optimized until target working face stopping is completed. The method is accurate in peak periodic interval predicting, and based on combination with stress monitoring data, the method is an effective means for pressure bump forewarning; andcompared with a current common method of individual micro shock event forewarning, the method is more objective and accurate.

Description

technical field [0001] The invention relates to a method for predicting and early warning of rock burst in coal mines, which is mainly used for predicting and forecasting the dangerous degree of rock burst in the actual production process of mines with rock burst disasters, and for guiding the anti-scour work of coal mines. Background technique [0002] Rock burst is one of the main disasters faced by deep coal mining, which poses a huge threat to the safe and efficient production of coal mines and the personal safety of coal miners. At present, domestic research on the occurrence mechanism of rock burst, monitoring and early warning, and prevention and control measures continues to deepen. However, in the actual production process, further research is needed on the identification and early warning of on-site rock burst occurrence, and the construction of early warning indicators. [0003] At present, the commonly used early warning methods for rockburst mines in China mainl...

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Application Information

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IPC IPC(8): E21F17/18
CPCE21F17/18
Inventor 韩刚郑忠友李旭东赵忠证朱磊王朝引张玉鹏刘立新刘毅涛王黔王俊峰吕玉磊昝东峰张志东王翰秋宁石杰张立川刘文涛
Owner 中煤能源研究院有限责任公司
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