科研之友
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摘要
Taking the small fault as research background, which existence ahead of fully mechanized coal face, the roadway stability were monitored by the means of multi-parameter method. Monitoring equipments include bolt dynamometer, anchor dynamometer, multi-function measured gun, electromagnetic radiation instrument, infrared thermometer, anemometer and hygrometer. Through the synchronous monitoring of stress, displacement, EME and temperature, micro-macro measurement methods of rock around roadway were realized successfully. Combining with the numerical simulation of stress in the fault and internal energy, meanwhile, the principal component analysis for multi-parameters, some conclusions were concluded. As the direct manifestation of internal energy, temperature shows the same variation with stress and displacement. Electromagnetic radiation measurements reflect the law of stress distribution of coal internal structure and micro-fracture frequency. The importance and sensitivity of parameters from strong to weak are displacement, electromagnetic radiation measurements, temperature and stress. Different spatial scales and comprehensive on rock of roadway's measurement is realized which need combine with electromagnetic radiation measurements, temperature, stress and displacement monitoring.
- 出版日期2011
- 单位中国矿业大学（北京）
