摘要
针对寸草塔煤矿22104综采工作面顶板岩层的特点,结合工作面实际情况,从工作面水力压裂钻孔布置设计、与强放效果对比、预裂效果分析等几个方面进行了分析。完成了对顶板岩层的弱化,实现了初采期间直接顶能顺利垮落,减小了工作面老顶初次来压步距,达到了降低初采期间工作面来压强度的目的,为今后综采工作面顺利实施水力压裂初次放顶技术提供了宝贵的经验数据。
According to the characteristics of roof strata in 22104 fully mechanized coal mining face of Cuncaota Coal Mine, combining with the actual working face situation, this paper analyzed the hydraulic fracturing borehole arrangement, the comparison with forced caving, and the pre-fracturing effect. With hydraulic fracturing, the roof strata was weakened, smooth caving of immediate roof was achieved during the initial mining, initial weighting interval of the main roof was reduced, and the weighting intensity of initial mining was reduced.
出处
《煤炭工程》
北大核心
2017年第F08期81-84,共4页
Coal Engineering
关键词
综采工作面
水力压裂
初次放顶
矿压显现
fully mechanized working face
hydraulic fracturing
initial top-coal caving
mine pressure behavior
