新建矿井的井筒、井底车场、大巷等掘进矸石除少部份回填工业广场外,需有排弃场。目前国内多系用临时矸石山或利用永久矸石山就地排放。国外发展趋势是利用首采区预先排弃,这是见不到矿井矸石山的原因之一。 矿井投产后,首先开采的采区称为首采区。其位置一般离矿井地面工业场地较近,开采后亦属首先塌陷区。建井矸石利用该区地面进行矸石预排,开采后地表下沉,矸石沉人塌陷区,土地简单整治即可。这种方法在平原厚表土矿区,更具有现实意义。本省 Newly built mine shaft, bottom-hole yard, roadway and other gangue excavation in addition to a small part of backfill Industrial Square, the need to have discarded field. At present, many domestic use of temporary gangue hill or the use of permanent waste rock in situ emissions. Foreign development trend is the use of the first mining area pre-abandoned, which is not to see the mine gangue one of the reasons. After the mine is put into operation, the first mining area is called the first mining area. Its location is generally close to mine floor industrial sites, mining is also the first subsidence area. Waste coal gangue used in the area to carry out pre-drainage of the surface, the surface subsidence after mining, sinking subsidence area, the land can be simply remediation. This method in the plain thick surface mining area, more practical significance. The province