型煤钻孔裂隙发育的数值模拟研究  

Numerical Simulation of Crack Development in Briquettes

作　　者：齐黎明 张旭锟[2] 王国玺 徐永 QI Liming;ZHANG Xukun;WANG Guoxi;XU Yong(？ Key Lab of Mine Disaster Prevention ＆ Control in Hebei Province,Langfang,065201,China;？ School of Safety Engineering,North China Institute of Science＆ Technology,Beijing,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,河北廊坊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2期16-18,35,共4页Journal of North China Institute of Science and Technology

基　　金：中央高校基本科研业务费资助项目(3142017033);廊坊市科技计划项目(2016013114)

摘　　要：本文利用型煤进行煤层钻孔模拟,并向钻孔内部进行注浆。浆体凝固后将型煤剥落,得到钻孔周围的裂隙发育,并运用FLAC3D数值模拟软件,对钻孔过程中,钻孔周围应力变化进行数值模拟研究,进而分析钻孔周围裂隙发育以及分布的情况。结果表明:通过钻孔周围应力变化情况的分析,可以发现在钻孔过程中钻孔周围的应力变化趋势,通常表现为"先减小,后增加"的趋势,并且钻孔周围边裂隙的数量随钻孔深入呈现"先增加,后减少"的趋势。In this paper, the simulation of coal seam drilling is carried out with briquette and grouting iscarried out in the borehole,After the slurry is solidified, the briquettes are peeled off, and the cracks aroundthe borehole are developed, The numerical simulation of the stress changes around the borehole is carried outby the FLAC3D numerical simulation software, and the development and distribution of the cracks around theborehole are analyzed. The results show that through the analysis of the stress changes around the borehole, itis found that the trend of stress changes around the borehole during drilling is usually shown as the trend of＂ decreasing first and then increasing＂ , and the number of cracks around the borehole shows a trend of ＂ in-creasing first and then decreasing＂ in the borehole.

关 键 词：裂隙分布 FLAC3D 数值模拟 

分 类 号：TD712.6[矿业工程—矿井通风与安全]