Device and method for predicting coal rock burst through hydrogen bond rupture

Abstract

The invention discloses a device and method for predicting coal rock burst through hydrogen bond rupture, and the device comprises a structural body extending into a coal rock drill hole, and a prediction analysis module, wherein the structural body is internally provided with a voltage signal collection module which is used for collecting transient voltage values of the inner wall of the coal rock drill hole at different depths; a temperature acquisition module which is used for acquiring temperature changes in the coal rock drill holes at different depths; a signal transmitting module whichis used for transmitting the acquired information to the prediction analysis module; and a prediction analysis module which is connected with the signal transmitting module and is used for comparing and analyzing the received signals and data acquired by the coal rock fracture experiment. According to the invention, transient voltage values generated by the inner wall during coal rock drilling fracture at different depths are collected; the collected data is transmitted to the computer in real time according to the temperature change of the inner wall of the coal rock drill hole at different depths, the computer compares and analyzes the collected data with laboratory simulated fracture experiment data, and therefore the coal rock burst danger level and strength are predicted.

Description

technical field [0001] The invention belongs to the technical field of coal rock burst prediction devices, in particular to a hydrogen bond rupture prediction coal rock rock burst prediction device and a prediction method thereof. Background technique [0002] my country's coal mines are one of the countries with the most severe rock bursts in the world. With the gradual development of coal mine mining, the frequency of rock bursts is increasing, which poses a serious threat to coal mine production. At present, using the electromagnetic radiation method to predict rock burst has become a new trend. During the deformation and fracture process of coal and rock mass under load, the fracture behavior of its internal microstructure will destroy the chemical bonds between atoms and intermolecular hydrogen bonds at the crack front. These chemical bonds are Due to the combination of electric interactions, the damaged bonds will cause the separation of charges to generate electromagn...

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Problems solved by technology

At present, using the electromagnetic radiation method to predict rock burst has become a new trend. During the deformation and fracture process of coal and rock mass under load, the fracture behavior of its internal microstructure will destroy the chemical bonds between atoms and intermolecular hydrogen bonds at the crack front. These chemical bonds are Due to the combination of electric interactions, the damaged bonds will cause the separation of charges to generate electromagnetic radiation. Monitor the electromagnetic signals generated during the cracking process of coal rocks, and further judge the degree of coal rock fragmentation according to the electromagnetic signals. However, the electromagnetic signals are affected by materials, There are large differences in the rupture speed and environmental conditions. The electromagnetic signal generated by the coal and rock rupture process is weak, and the noise generated by external interference will be superimposed on the original electromagnetic signal. It is difficult to process the noise to obtain an accurate electromagnetic signal. At the same time, hydrogen bond rupture will absorb part of the energy, but the change law of hydrogen bonds in the process of coal deformation and fracture has not been discovered

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