Equivalent drilling cuttings weight continuous monitoring device and method

A monitoring device and cuttings volume technology, applied in mining equipment, earthwork drilling, hydraulic/pneumatic metering, etc., can solve problems such as omission of useful information, operational errors, and inaccuracy

Active Publication Date: 2011-02-02
北京安科兴业科技股份有限公司
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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 o

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  • Equivalent drilling cuttings weight continuous monitoring device and method
  • Equivalent drilling cuttings weight continuous monitoring device and method

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Embodiment Construction

[0016] The method for continuous monitoring of equivalent drilling cuttings volume of the present invention utilizes the relationship between bearing pressure distribution, drilling cuttings volume and drilling stress, and includes the following steps: the first step is to predict the bearing pressure distribution range and pressure value through the mine pressure theory The second step is to monitor the corresponding relationship between the amount of drilling cuttings and the stress at different depths of different coal bodies on the spot; the third step is to summarize the theory of the relationship between the bearing pressure distribution, the amount of cuttings and the drilling stress; The fourth step is to determine the key threshold value for early warning of rock burst; the fifth step is to set up the pressure monitoring system to continuously monitor the stress, and determine the equivalent cuttings amount according to the relationship between the stress and the amount...

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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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Application Information

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IPC IPC(8): E21F17/18G01L1/02
Inventor 姜福兴
Owner 北京安科兴业科技股份有限公司
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