One-hole multi-index intelligent rock burst pre-warning system and method for mine

Abstract

The invention discloses a one-hole multi-index intelligent rock burst pre-warning system and method for mine and belongs to the technical field of mine monitoring. The system comprises an infrared temperature sensor bracket, an infrared temperature sensor, a first signal conditioner, a second signal conditioner, a third signal conditioner, a fourth signal conditioner, a paperless recorder, an alarm, a drilling device and a drilling cuttings gathering and measuring device. According to the one-hole multi-index intelligent rock burst pre-warning system and method for the mine, four kinds of indexes are simultaneously gathered in the process of drilling one test hole, the pre-warning precision is improved, the safety accidents caused by the rock burst disaster can be reduced, the drilling cuttings weight, drilling cuttings temperature, drill stem torque and drilling cuttings thrust are continuously monitored in real time, and the under-reporting phenomenon of a drilling cuttings method due to effective information omission is avoided; the device is simple in structure and easy to mount, the paperless recorder intelligently displays data, the actual situation can be reflected objectively, the manual operation error is avoided, and the alarm can timely alarm the rock burst danger.

Description

technical field [0001] The invention belongs to the technical field of coal mine monitoring, and in particular relates to a mine-used one-hole multi-indicator intelligent early warning system and method for rock burst. Background technique [0002] Rockburst refers to the mine dynamic phenomenon characterized by violent vibration and explosive damage caused by the release of a large amount of energy when the coal rock mass is instantly destabilized and destroyed by external disturbances. It is a major disaster in the coal mining process. Accidents, with the increase in the depth and intensity of coal mining resources and the complexity of mining conditions, rock burst disasters seriously threaten the safe production of coal mines, and the research on early warning technology of rock burst has become very urgent. [0003] In the field of inspection and early warning of rock burst hazards, the current on-site forecast at home and abroad is mainly based on the drilling cuttings...

AI Technical Summary

Problems solved by technology

[0003] In the field of inspection and early warning of rock burst hazards, the current on-site forecast at home and abroad is mainly based on the drilling cuttings method. Only one indicator can be measured, but it is impossible to measure the cuttings temperature, drill pipe torque, drilling rig thrust and other indicators that have an impact on rock burst; continuous monitoring cannot be carried out, resulting in the omission of useful information and false reporting; using a hand-held drilling rig During the drilling operation, the workload of the operator is heavy, coal dust and gas spouts will bring danger to the operator during the operation, and the coal electric drill is unstable during drilling and will vibrate violently, and the vibration of the drill pipe during the prediction will make the actual drilling The hole diameter is much larger than 42mm, resulting in inaccurate cuttings index; using cloth to collect cuttings, the cuttings are easily blown away by the wind, making the amount of cuttings smaller; use pen and paper to record the amount of cuttings and draw the amount of cuttings Curve, low level of intelligence, prone to operational errors, resulting in inaccurate, unreliable and unscientific judgment results

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