Test method for energy conduction path and conduction efficiency under unidirectional impact

Abstract

The invention discloses a device and method for testing the energy conduction path and conduction efficiency under one-way impact. The device comprises a simulated roadway and a measuring mechanism. The measuring mechanism comprises a microprocessor, a first stress sensor, a second stress sensor, a third stress sensor, a key input module, a lower set of acoustic emission sensors and an upper set of acoustic emission sensor. The method comprises the steps that firstly, the simulated roadway is constructed, and the sensors are arranged; secondly, the energy conduction path and the initial energyconduction efficiency in the simulated roadway are obtained; thirdly, the energy conduction efficiency of the water-injected simulated roadway is obtained; fourthly, the energy conduction efficiencyof the drilled simulated roadway is obtained; fifthly, the energy conduction efficiency of the supported simulated roadway is obtained; sixthly, the energy conduction efficiency of the blasted simulated roadway is obtained; and seventhly, the optimal weakened conduction measure of the simulated roadway is obtained. The device and method for testing the energy conduction path and conduction efficiency under one-way impact are reasonable in design, the energy conduction path and conduction efficiency can be accurately obtained, and the accurate basis is provided for the roadway energy weakened conduction measure.

Description

technical field [0001] The invention belongs to the technical field of energy conduction path and conduction efficiency testing, and in particular relates to an energy conduction path and conduction efficiency test method under unidirectional impact. Background technique [0002] Dynamic disasters represented by rockburst and rockburst are the main dynamic disasters that threaten mining and tunneling in my country. The occurrence of dynamic disasters is a process in which the concentrated stress is transmitted from the deep surrounding rock to the free surface space such as roadway and working face. The prevention and control of dynamic disasters can be summarized as "eliminating the source, weakening the conduction, and strengthening the terminal". Therefore, it is very important to study the mechanism of energy conduction path and conduction efficiency, and weaken the energy conduction to guide the control of dynamic disasters. However, at present, the energy conduction p...

AI Technical Summary

Problems solved by technology

However, at present, the energy conduction path in the roadway is unclear, and the quantitative description of the conduction efficiency in the roadway is unclear. Therefore, the "weakening conduction" control measures such as blasting pressure relief, water injection softening, and support are still relatively blind. There is still a blind spot in the demonstration and lack of scientific basis, so it is impossible to accurately determine the weakening position of energy in the energy conduction path

At present, there are few researches on the test and exploration of energy conduction path and conduction efficiency under the action of one-way impact load.

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