第43卷第6期 2016年12月
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
赵宝峰.上行开采条件下多煤层开采覆岩破环规律研究[J].矿业安全与环保，2016,43(6)：13-15. 文章编号：10084495(2016)06001303
Vol. 43 No. 6 Dec.2016
上行开采条件下多煤层开采覆岩破坏规律研究
赵宝峰",2
（1.中煤科工集团西安研究院有限公司，陵西西安710054；2.陕西省煤矿水害防治技术重点实验室，陕西西安710177）
摘要：为了定量研究上行开采条件下单一煤层和多煤层开采的覆岩破坏规律，利用FLAC3"数值模拟软件，分别对麦垛山煤矿仅开采6煤和先开采6煤后开采2煤两种情况下覆岩破坏规律进行了研究，结果表明：仅开采6煤时，弯曲下沉带主要发育在地表以下491.02m，导水裂缝带发育高度为51.70m，地 008 水裂缝带发商高度为59.00m，地表下沉值为375.00mm。上行开采对于下部煤层6煤导水裂缝带发育高度影响不大，电于上部煤层2煤导水裂缝带的发育，导致变曲下沉带范围缩小，地表下沉值由于上部煤层2煤的开采而显著增大
关键词：上行开采；覆岩破坏规律；导水裂缝带；弯曲下沉带；数值模拟
中图分类号：TD82
文献标志码：A
网络出版时间：2016-12-0620：33
网络出版地址：http：//www.cnki.net/kems/detail/50.1062.TD.20161206.2033.052.html
Study on Overlying Strata Failure Rule in Process of Multi-seam
Ascending Mining ZHAO Baofeng.2
(1. China Coal Technology and Engineering Group Xi'an Research Institute, Xi' an 710054, China;
2. Shantxi Key Laboralory of Coal Mine Waler Hasard Prerention and Control Technology', Xi' an 710177, China)
Abstract : In order to quantatively study the failure rule of the overlying rock strata under the condition of the ascending mining of the single seam and multiple seams, FLACS" numerical simulation sofware was used for studying the failure rule of the
overlying rock strata in two cases in Maiduoshan Mine
case is that the No. 5 : subsidence
51.70 m and the surface
380. 00 m below the surface, the devel
surface subsidence amour
575.0
that1
e is that only No. 6 seam is mined, and the second
the lirst case
showed that in the first ease, the sagging
ler flowing fractured zone was
saden
mainly developed was 59. 00 m and the
mining on the develoment height of the water flowing
fractured zone of the lower No. 6 seam was not big , the development of water flowing fractured zone of the upper No. 2 seam led to the scope of the sagging subsidence zone to be reduced, and the the surface subsidence amount was significantly increased due to the mining of the upper No. 2 seam.
Keywords: ascending mining; overlying strata failure rule; water flowing fractured zone; sagging subsidence zone; numerical simulation
根据煤层赋存条件，可以将含煤地层划分为单
收稿日期：2016-05-13
基金项目：国家科技支撑计划课题（2012BAK04B04）；中国煤炭科工集团面上项目（2011MS037）：中煤科工集团西安研究院面上项目（2016XAYMS10）
作者简介：赵宝峰（1981一），男，河北涉县人，博士，副研究员，从事矿并防治水理论与技术的研筑工作。E-mail：
sunman1220@ 163, com, 万方数据
一煤层和煤层群等地层。随着矿井开采强度的增大，开采深度也在逐渐增加，许多矿并面临者多煤层开采带来的一系列问题。以往对煤层开采覆岩破坏规律的研究主要集中在单一煤层开采的矿压变化覆岩破坏和应力分析方面(1-+]，对多煤层开采过程中覆岩破坏规律虽然也开展了部分研究[5-7]，但是对于
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