采区边界煤柱控制走向方向的上覆岩层破坏范围，采空区边界三角煤柱控制倾斜方向的上覆岩层滑移变形，最终达到控制地表沉陷的目的。

With barrier pillars to decrease the strata movement along the strike, and goaf triangle pillars to decrease the strata slipping along the dip, surface subsidence could be preferably controlled.

youdao

采区边界煤柱控制走向方向的上覆岩层破坏范围，采空区边界三角煤柱控制倾斜方向的上覆岩层滑移变形，最终达到控制地表沉陷的目的。

With barrier pillars to decrease the strata movement along the strike, and goaf triangle pillars to decrease the strata slipping along the dip, surface subsidence could be preferably controlled.

youdao