The simplified mechanics model of softstratum deformation is built up.
建立链子崖软弱层变形的简化力学模型。
2
The normal production of a mine may be seriously influenced because of low strength and poor cementation of loose surrounding rock of roadway in softstratum.
由于软岩巷道围岩松散、 强度低、胶结程度差,已严重影响矿山的正常生产。
3
The vital problems to be solved in Shendong mine are the dynamic pressure damage of thin rock strata roof under thick sandy soil softstratum and the loss of water and soil under mining.