2016年6月
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
刘发义，张玉东.基于高元的断层防水煤柱留设规律研究[J].矿业安全与环保，2016,43(3)：71-73. 文章编号：1008-4495(2016)03007103
基于离散元的断层防水煤柱留设规律研究
刘发义"2,张玉东3
Vol. 43 No. 3 Jun.2016
（1.河南理工大学资源环境学院，河南焦作454000；2.山西晋城煤业集团赵庄煤矿，山西长子046605；
3.中煤科工集团重庆研究院有限公司水文物探研究分院，重庆400039）
摘要：通过对某煤矿2321工作面突水模型、2313工作面开采模型进行基于离傲元的数值模拟分析，总结出采动条件下留设不同宽度的防水煤柱时采空区图岩应力场的变化规律，以及该矿断层防水煤柱宽度的计算公式。研究结果表明，奥灰顶界断层破碎带附近最小主应力大于该区城奥灰水压是断层突水的必要非充分条件，同时2313工作面开采时F6断层不需留设防水煤柱。
关键词：断层突水；离散元；防水煤柱；煤柱宽度
中图分类号：TD745
文献标志码：B
网络出版时间：2016-06-0518：13
网络出版地址：http：//www.cnki.ne/kcms/detail/50.1062.TD.20160605.1813.030.html
Studyon Remaining Rule ofFault Waterproof Coal Pillar Based on DiscreteElement Method
LIUFayi'-2,ZHANGYudong
(1. School of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China; 2. Zhaochuang Mine, Shanxi Jincheng Anthracite Mining Group Co. , Lad. , Changzi 046605, China; 3. China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing 400039, China)
Abstract; In this paper, numerical simulation and analysis based on the discrete element were made on the water inrush model of 2321 working face and the mining model of 2313 working face, the changing regularity of the surrounding rock stress field in the gob when the waterproof coal pillars in different width were remained under the mining condition was summarized, and calculation formula of the the fault waterproof pillar width of this mine was obtained. The research results showed that the minimum principal stress near the fault fractured zone on the top boundary of Ordovician limestone higher than the Ordovician limestone water pressure was the necessary but not sufficient condition of water inrush from fault, and it was not necessary to remain the waterproof coal pillar for F6 fault in the mining of 2313 working face.
Keywords: fault water inrush; discrete element; waterproof coal pillar; coal pillar width
1研究背景
据资料统计，我国煤矿的突水事故80%以上与断层相关。山东某煤矿位于济宁煤田西北部，该矿井断层较为发育，共发现落差大于等于20m的断层44条。其中2321工作面宽约130m，F4断层（经钻探验证为不导水断层）防水煤柱宽度最小26m，
收稿日期：2015-08-25;2016-01-19修订
基金项目：国家“十二五”科技支撑计划项目(2012BAK04B00)
作者简介：刘发义（1973一），男，山西襄汾人，在读工程硕士，工程师，从事矿井“一通三防”、煤层瓦斯抽采技术管理
工作。Email;liufayi622@163.com。万方数据
3煤距下伏奥灰约212m，由于F4断层的影响，使 3煤与对盘奥灰间距仅为64m左右（见图1)。
460 560 660 760 860
960
0
100
98
200
300 x/m
400
图12321工作面地质剖面筒图
4es
500
600· 71 ·