摘要
针对莒山煤矿ZF302厚煤层复采工作面与原采区运输大巷距离近的实际情况,为了防止在综放工作面开采时由于底板破坏导致工作面设备下陷等事故,需要对综放面下覆的原开拓大巷进行加固和控制。通过模拟六采区运输大巷在ZF302综放面开采时的巷道受力特点和变形规律,针对巷道与综放面垂直距离的不同,分别设计了运输大巷加固方案,并给出了详细的加固参数。现场应用实践表明,在ZF302综放面开采过程中,六采区运输大巷没有发生严重的顶板下沉,综放面设备等没有出现下陷,实现了安全有效开采。
Aiming at the actual situation of close distance between the haulage roadway in previous mining area and the repeated mining face in the mining process of the ZF302 thick coal seam in Jushan Mine, in order to prevent the equipment subsidence accidents resulted from the failure floor in fully mechanized caving mining, the previous main heading roadway under the fully mechanized caving face needs to be reinforced and controlled. Through simulating the force loading features and deformation law of the haulage roadway of the sixth mining area in the min- ing process of ZF302 fully mechanized caving face, and based on the differences of vertical dis- tance between the roadway and fully mechanized caving face, the reinforcing schemes are respec- tively designed, and the detailed reinforcing parameters are provided. Field practice shows that in the mining process of ZF302 fully mechanized caving face, roof subsidence is not obvious in the haulage roadway of the sixth mining area, and equipment subsidence has not occurred in fully mechanized caving face, which has realized the safe and effective mining.
出处
《中国煤炭》
北大核心
2013年第11期72-75,共4页
China Coal
基金
中央高校基本科研业务费专项资金资助(2009QZ10)
教育部博士点新教师项目(20110023120002)
关键词
煤矿开采
复采
下覆巷道
巷道支护
数值模拟
coal mining, repeated mining, underlying roadway, roadway support, numerical simulation
