高应力软岩及形成条件课程毕业设计外文文献翻译.docVIP

English Under high stress soft crag mine pit tunnel supports and protections Abstract Along with the coal mine mining depth unceasing increase, the mine shaft coal mine tunnel will be in the higher crustal stress environment, especially in the geologic structure activity intense area, the mine shaft tunnel supports and protections and the stability guaranteed even more with difficulty.Studies under the high crustal stress soft crag environment the tunnel science supports and protections way is guarantees the coal mine excavation depth portion coal bed the key..And formed the condition on the high stress soft crag basic concept to carry on the discussion, in grasped the high stress soft crag tunnel the distortion characteristic and in the supports and protections principle foundation, take the cotton rose mining area white bright coal mine mine shaft high stress soft crag tunnel supports and protections as the object, has conducted the research and the practice to 3 different supports and protections ways, finally indicated the reservation just the crack supple level supports and protections way for best suited under the high stress soft crag condition the tunnel supports and protections way. Keywords: High stress; Soft crag tunnel; Union supports and protections; Reservation just crack supple level supports and protections  Along with the coal mine mining depth unceasing increase, the mine shaft tunnel will be in the higher crustal stress environment, in the geologic structure activity intense area, the relict structure stress quite will be especially big, the rock mechanical properties have also had the change, the result have brought the very great difficulty for the coal mine tunnel supports and protections and the stability, thus will become restricts the coal mine enterprise to the depth portion mining bottleneck. Therefore, studies under the high crustal stress soft crag environment the tunnel science supports and protections way is guaranteed the mine pit ex