A roof safety mine pressure monitoring method and device

Abstract

The invention discloses a safe mine pressure monitoring method and device for a roof and relates to the technical field of safe mine pressure monitoring. The method is used for carrying out simultaneous monitoring on anchoring force, the stability of deep wall rocks of the roof and the surface deflection at a same fracture surface of a roadway or a chamber. The device comprises a roof abscission layer monitoring device, an anchoring force monitoring device, a deep displacement monitoring device and roadway surface displacement monitoring devices, wherein each device is connected with a ground control system through a transmission system, and the monitoring devices are provided with signal acquisition components to realize simultaneous online monitoring and lag monitoring. According to the safe mine pressure monitoring method and device for the roof, the comprehensive comparative analysis is carried out on the anchoring force, the abscission volume and the deflection numeral value of the roof and the composite multi-index comparison is utilized to warn and predict the safety of the roof, strong guarantees are provided for the safe production of underground projects such as coal mines and metal mines.

Description

technical field [0001] The invention relates to the technical field of roof safety mine pressure monitoring, in particular to a roof safety mine pressure monitoring method and device, which can be generally applied to the roof safety mine pressure monitoring of roadways or chambers in underground mines. Background technique [0002] my country is a big energy country, and coal accounts for more than 70% of primary energy. Especially the mature application of coal-to-oil technology in my country's two major coal bases, Shendong and Lu'an, the importance of coal resources has been raised to the strategic level of national security. status up. In 2010, my country's raw coal production exceeded 3 billion tons. In 2011, my country's total raw coal production reached 3.52 billion tons, an increase of 8.7% year-on-year, accounting for about half of the world's production. "The good start of economic and social development has made positive contributions. my country's coal mining pe...

AI Technical Summary

Problems solved by technology

The roof mine pressure monitoring data reflects the safety of the roof. Generally, people often judge the safety of the roof through unilateral roadway surface displacement monitoring or roof separation monitoring or bolt force monitoring or deep displacement monitoring, or considering The precision of anchor force monitoring is to avoid the impact of anchor force monitoring caused by other monitoring of nearby stress concentration on anchor monitoring, so there are few common couplings of various mine pressure monitoring, which often leads to data display due to some factors being monitored. The roof is normal, but ignoring the unmonitored factors has led to the risk of instability of the roof, so that the roof is mistaken for safety, resulting in unnecessary accidents and casualties, posing a serious threat to personal safety and mine safety production

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