地面下料孔在建井过程中的应用

Application of Ground Unloading Hole in Well Construction

为了缓解神宁煤业集团清水营煤矿1#副斜井辅助提升的压力,加快垣1065m水平车场喷浆成巷的进度及主斜井、回风斜井的维修进度,根据实际情况施工了地面至垣1065m水平车场的地面下料孔。实践证明,地面下料孔的应用不仅缓解了1#副斜井辅助提升的压力,并且保证了喷浆成巷的进度,取得了预期的效果。

In order to remit the pressure for assist lifting of 1# subsidiary slope at Qingshuiyiug coal mine of Shnehua Ningxia Coal Industry Group and quicken the whitewashing roadway progress on 1065m horizontal parking lot and maintenance progress of main slope and return air slope, ground unloading hole from ground surfaee to 1065m horizontal parking lot has been constructed with actual condition. The praetiee has proved that the application of ground unloading hole not only remit the pressure of 14 subsidiary slope, but also guarantee the whitewashing roadway progress with desired effect.