原生矸石置换开采控制顶板技术研究

Study on Roof Control Technology of Original Gangue Replacement Mining

古城煤矿为回收开采建筑物下压煤和原老区遗留条带煤柱,提出原生矸石井下置换开采技术并予以实践。通过参考先进的研究成果、不断总结经验、分析覆岩运动特征,提出矸石充填开采后工作面两顺槽补强支护的工程实践。研究结果表明:原生矸石充填系统能够减小矿山压力显现,对于冲击地压防治及顶板管理具有一定积极意义。

In order to recover the pressed coal under the buildings and the strip coal pillar left in the old area in Gucheng Coal Mine,the underground replacement mining technology of original gangue is proposed and put into practice.By referring to the advanced research results,constantly summing up experience and analyzing the movement characteristics of overburden rock,this paper puts forward the engineering practice of strengthening and supporting the two crossheading of working face after gangue filling mining.The results show that the original gangue filling system can reduce the mine pressure behavior,which has a certain positive significance for rock burst prevention and roof management.