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立井井壁破坏采用开卸压槽方法处理，论述卸压槽位置的选择，介绍卸压槽施工特点和分析卸压槽的作用机理。
Shaft wall destruction using open trough pressure tank method to deal with the selection of the location of the pressure relief trough to introduce the characteristics of the construction of the pressure relief trough and analysis of the role of pressure relief trough mechanism.