Equivalent drilling cuttings weight continuous monitoring device and method

Abstract

The invention relates to the field of the monitoring and prewarning of mine power disasters, in particular to an equivalent drilling cuttings weight monitoring device and an equivalent drilling cuttings weight monitoring method. The method comprises the following steps of: determining the relations among bearing pressure distribution, drilling cuttings weight and drilling stress by using a mine pressure theory, on-site actual measurement and laboratory experiment data; determining a key threshold value among the parameters during rock burst; and prewarning before the rock burst. The monitoring device comprises a pressure monitoring device, an instrument and a transmission line, wherein the pressure monitoring device is embedded into an excavation area; and the instrument and the transmission line are used for transmitting monitored data to the ground. A ground monitoring main machine is used for continuously monitoring the change situation of under-well pressure, so that the rock burst can be prewarned according to the key threshold value. In the device and the method, the defects of dangerous drilling cuttings method and incontinuous monitoring in real time are overcome and the safety and effectiveness of rock burst monitoring are improved.

Description

technical field [0001] The invention relates to a continuous monitoring method and device for the amount of equivalent drilling cuttings, which are used for monitoring and early warning of rock burst in coal mines. Background technique [0002] In the field of monitoring and early warning of rock burst, the on-the-spot forecast at home and abroad is mainly based on the cuttings method, but the early warning indicators used by various mines are different. The cuttings method is a comprehensive index including mining stress, coal body properties, outburst environment, etc., which is more practical and reliable. In addition, there are electromagnetic radiation monitoring method and microseismic detection method. The electromagnetic radiation monitoring method is an auxiliary method, which is greatly affected by the complexity of groundwater, structure, and electromagnetic environment; the microseismic monitoring method is a long-term and macroscopic monitoring method, which ha...

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Problems solved by technology

[0005]The outstanding advantage of the drilling cuttings method is its practicability and the reliability of the method, and its outstanding disadvantages are the danger of the operator during the implementation process, and the operation varies from person to person Errors and continuous monitoring and real-time early warning, resulting in the omission of useful information and the inability to accurately and effectively monitor the impact of low pressure

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