河下厚煤层综放开采试验研究

Trial Research on Fully-mechanized Sublevel Caving Mining under River

为充分开采煤炭资源,在不影响泗河河堤防洪标准和确保两岸村庄建筑物不受破坏的前提下,杨村煤矿在泗河下方布置开采了302综放工作面。取得了在泗河及厚含水松散层下采煤的经验和地表移动与变形参数,为类似条件下厚煤层开采积累了宝贵实践经验,取得了良好的社会、经济效益。

Underground coal mining may cause a series of problems, such as land surface subsidence, the destruction of buildings, the ecological environment degeneration, etc..How to control the surface subsidence caused by the underground coal mining has attracted great attention from the society. This paper gives a test of sublevel caving mining under the Sihe River in Yangcun Coalmine. Based on the observation analysis to the lithology, the hydrological condition and the structure feature of the overlying strata of No.3 coal seam, a series of measures have been taken to control the movement of the overlying strata. Detailed survey data of the surface subsidence show that the main indices required by safety mining have been reached. The successful sublevel caving mining under the river provides the coal mining under the similar conditions with guidance.