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Research on Numerical Simulation of Rock Burst Based on FLAC Software and Its Risk Prediction Method

Author: WangYong
Tutor: SaZhanYou
School: Qingdao Technological University
Course: Safety Technology and Engineering
Keywords: Rockburst FLAC3D Numerical Simulation Risk prediction
CLC: TD324
Type: Master's thesis
Year: 2010
Downloads: 142
Quote: 0
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Abstract


Coal is China 's primary energy , with the increase in the amount of coal mining and underground mining depth , impact pressure the accident showed multiple trend , resulting in the serious casualties and economic losses . The rockburst occurred mechanism is extremely complex , and has yet to form a generally accepted theory , and its forecast technically there is greater room for improvement , therefore , has important practical significance to study factors affecting coal mine rockburst prediction method . Excavation roadway impact pressure the dynamic disaster for the study, combined with actual Laohutai Lagrangian simulation . Pressure numerical model , multiple impact roadway excavation on the stress-strain simulation model by contrast , analysis of mining depth , supporting conditions and roof and floor lithology coal mine rockburst summarize the possibility of tunnel digging coal rock mass stress concentration and strain variation , analyzed the impact pressure occurs . 83002 # mechanized caving face test area engineering practice , combined with the results of numerical simulation and on-site monitoring data rockburst electromagnetic radiation prediction method . Fuzzy pattern recognition of the intensity of the electromagnetic radiation , the establishment of a mathematical model , the face electromagnetic radiation intensity of Laohutai maximum membership degree curve and regression curve regression curve formula to determine a the Coal Seam Laohutai electromagnetic radiation intensity maximum value E max threshold of forecasting rockburst forecast for coal mine to provide a theoretical basis .

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Rock pressure and rock movement > Rockburst
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