摘要
针对神东矿区坚硬难垮顶板爆破强制放顶作业中存在的安全问题,引入了高压水预裂强制放顶技术。通过在神东矿区6个矿井10个采煤工作面的初采放顶工业应用,表明高压水预裂可增加和扩展顶板原生裂隙,弱化坚硬难垮顶板,消除初采期间采空区大面积悬顶;工作面矿压显现"温和",基本顶初次垮落步距缩短,不影响正常推采;较爆破强制放顶安全、经济、环保,每个工作面可节约费用约2~5万元。
For the safety problems of forced caving operation by blasting for hard roof in Shendong Mining Area, the high pressure water pre-splitting forced caving technology is introduced. Through mining industry application at ten working faces of six coal mines in Shendong Mining Area, it shows that high pressure water pre-splitting can increase and expand the roof crack, weaken hard roof, eliminate large hanging roof in goal during the initial mining period; with the ＂gentle＂ rock pressure of working face, the first caving step distance of basic roof is shortened, which does not affect the normal production; compared to blasting caving, this technology is safe, economic, environmental, and each working face can save costs about 2 to 5 million yuan.
作者
杨俊彩
YANG Juncai(China Shenhua Shendong CoN Group Corporation Limited, Shenmu 719315, China)
出处
《煤矿安全》
北大核心
2017年第B03期63-68,共6页
Safety in Coal Mines
关键词
坚硬顶板
高压水预裂
强制放顶
爆破
矿压显现
hard roof
high pressure water pre-splitting
forced caving
blasting
rock pressure
