摘要
针对朔州矿区房柱式采空区下采用爆破强制放顶作业时可能存在的安全隐患,引入了分段定向水压致裂强制放顶技术手段。在晋北某煤矿6106工作面进行了初采期间的强制放顶工业性应用,通过现场观测、钻孔窥视发现致裂后顶板岩层裂隙发育,初次来压步距缩短,避免了初采期间采空区大面积悬顶,回采期间工作面矿压显现缓和,保证了工作面的安全回采。
Some potential safety that induced by overhead caving with blast under room and pillar goaf of Shuozhou coal mine area,and then sectional orientation water fracturing overhead caving technology was introduced. And it was applied in overhead caving industry application of 6106 working face of one coal mine in Jinbei district,according field observation,fractures development after in roof after water fracturing,and then the first weighting distance was shorten,so large area hanging arch would be avoided during initial mining period,so working face mining pressure was smooth during ming period,and safety mining was ensured.
作者
王永洁
WANG Yong-jie(Shaanxi Yulin Daliangwan Coal Mine Co.,Ltd.,Yuyang 719000,China)
出处
《煤矿开采》
北大核心
2018年第4期85-88,共4页
Coal Mining Technology
基金
国家自然科学基金面上项目:多因素耦合作用下厚煤层大采高综采面极限开采强度确定方法研究(51474128)
青年科学基金项目:基于浅埋深采场岩层破坏时间效应的顶板切落演化时空序列研究(51604152)
关键词
坚硬顶板
房柱采空区
定向水压致裂
强制放顶
来压步距
大面积悬顶
harden roof
room and pillar goaf
orientation water fracturing
overhead caving
weighting distance
large area hanging arch
