Mine-used one-hole multi-indicator intelligent early warning system and method for rock burst

Abstract

The present invention uses a mine-used one-hole multi-indicator intelligent early warning system and method for rock burst, and belongs to the technical field of coal mine monitoring; the system includes an infrared temperature sensor bracket, an infrared temperature sensor, a first signal conditioner, a second signal conditioner, and a third signal conditioner The conditioner, the fourth signal conditioner, the paperless recorder and the alarm also include the drilling device and the cuttings collection and measuring device; the present invention collects four kinds of indicators simultaneously during the process of drilling a test hole, which improves the accuracy of early warning It can reduce safety accidents caused by rock burst disasters, and conduct real-time and continuous monitoring of cuttings weight, cuttings temperature, drill pipe torque and cuttings thrust, so as to avoid the phenomenon of under-reporting due to the omission of effective information in the cuttings method. The structure of the device It is simple and easy to install. It uses a paperless recorder to intelligently display the data, which can objectively reflect the actual situation and avoid manual operation errors. The alarm can alarm the risk of rock burst in time.

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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