含水率对钻孔裂隙发育的影响  

Study on the Law of Drilling Fracture Development of Different Water Content Briquettes

作　　者：齐黎明 张旭锟[2] 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)

机构地区：[1]河北省矿井灾害防治重点实验室,河北三河065201 [2]华北科技学院安全工程学院,北京东燕郊065201 [3]阳煤地产建设有限责任公司,山西阳泉045000

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)

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.

关 键 词：含水率 相似模拟实验 声速测试 发育规律 

分 类 号：TD712.6[矿业工程—矿井通风与安全]