摘要
为能提高低渗透煤层的透气性,减少瓦斯突出灾害,采用高压水力割缝技术,对掘进工作面的煤体进行水力割缝,通过割缝增大煤层的卸压范围;采用FLAC3D对选取模型进行数值模拟计算和多种割缝高度的方案分析,最终确定掘进工作面及两帮煤体很好卸压时所需切割的有效割缝高度。
To improve the permeability of low-permeability coal bed and to decrease gas outburst disasters,high pressure hydraulic slotting was applied in driving face to increase the pressure relief range with slotting.Numerical simulation of selected models with FLAC3D was used to determine the valid slotting height where the driving face and two sides had idea pressure relief effect.
出处
《山西煤炭》
2012年第10期41-42,45,共3页
Shanxi Coal
关键词
水力割缝
数值模拟
割缝高度
卸压程度
hydraulic slotting
numerical simulation
slotted height
pressure relief degree
