期刊文献+

含水率对钻孔裂隙发育的影响 被引量:1

Study on the Law of Drilling Fracture Development of Different Water Content Briquettes
下载PDF
导出
摘要 钻孔周边存在裂隙产生于发育,造成钻孔孔壁出现漏风通道,造成瓦斯抽采的低效率,因此裂隙发育的情况成为研究重点。本文基于对不同含水率的型煤进行钻孔作业,并在钻孔前、钻孔后以及注浆后进行型煤内部的声速测试,研究不同含水率型煤的裂隙发育规律。结果表明:通过钻孔前后的声速分析,6%含水率的在钻孔前后的声速变化较小,而12%含水率的声速变化较大。 Because of cracks exist on the periphery of boreholes,resulting in the leakage of the borehole wall and the low efficiency of gas extraction,so the development of fissures has become the focus of research.Based on the drilling operation of mould coal with different moisture content,this paper tests the sound speed inside the briquette before drilling,after drilling and after grouting,so as to study the fracture development law of briquette with different moisture content.The results show that:through the analysis of the sound velocity before and after drilling,velocity change of 6%moisture content before and after drilling is smaller,and the variation of sound velocity of 12%moisture content is larger.
作者 齐黎明 张旭锟 王国玺 QI Li-ming;ZHANG Xu-kun;WANG Guo-xi(Key Lab.of Mine Disaster Prevention&Control in Hebei Province,Sanhe,065201,China;School of Safety Engineering,North China Institute of Science&Technology,Yanjiao,065201,China;Real Estate Construction,Limited Liability Companies of Yangquan Coal Industry(GROUP)CO.,LTD,Yangquan,045008,China)
出处 《华北科技学院学报》 2018年第1期32-35,共4页 Journal of North China Institute of Science and Technology
基金 国家自然科学基金资助(51204070) 河北省自然科学基金资助项目(E2015508053) 河北省矿井灾害防治重点实验室开放基金资助(KJZH2013K09)
关键词 含水率 相似模拟实验 声速测试 发育规律 Water Content Similar Simulation Experiment Sound Velocity Test Development Law
  • 相关文献

参考文献7

二级参考文献66

共引文献459

同被引文献17

引证文献1

二级引证文献9

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部