某煤矿第三平台挡土墙及地面变形原因分析

ANALYSES OF THE DEFORMATION CAUSE OF THE THIRD TERRACE’S RETAINING WALL AND ITS GROUND OF THE COAL MINE

认为第三平台挡土墙及地面变形并非土体整体滑动造成 ,而是由于墙后上层滞水的形成和富集及地面堆载的作用 ,使得墙后土体产生了湿陷变形和一定的压缩变形 ;同时又使土体湿化 ,降低了土的抗剪强度 ,增大了主动土压力所造成。

The paper expounds the deformation of the third terrac’s retaining wall and its ground is not caused by the soil body’s sliding as a whole,but by the forming and gathering of perched water behind the wall and the common action of the accumulations on the ground,which produces the collapsible deformation and the compressed deformation,makes the soil body saturate,reduces the soil shearing strength and increases the active earth pressure simultaneously. [