[1]来兴平,刘 彪,陈建强,等.急倾斜特厚煤层层间岩柱动力学失稳诱灾倾向预测[J].西安科技大学学报,2015,(03):277-283.
 LAI Xing-ping,LIU Biao,CHEN Jian-qiang,et al.Induced hazard-prone prediction to the intermediate rock-pillar dynamic instability in heavy steep-thick coal seam[J].Journal of Xi'an University of Science and Technology,2015,(03):277-283.
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2015年03期
页码:
277-283
栏目:
出版日期:
2015-06-30

文章信息/Info

Title:
Induced hazard-prone prediction to the intermediate rock-pillar dynamic instability in heavy steep-thick coal seam
文章编号:
10.13800/j.cnki.xakjdxxb.2015.0301
作者:
来兴平12刘 彪12陈建强3张新战3孙秉成3王 建3
1.西安科技大学 能源学院,陕西 西安 710054; 2.教育部 西部矿井开采及灾害防治重点实验室,陕西 西安 710054; 3.神华新疆能源有限责任公司,新疆 乌鲁木齐 830027
Author(s):
LAI Xing-ping12LIU Biao12CHEN Jian-qiang3 ZHANG Xin-zhan3SUN Bing-cheng3WANG Jian3
1.College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi'an 710054,China; 3.Shenhua-Xinjiang Energy Co.,Ltd.,Urumchi 830027,China
关键词:
急倾斜特厚煤层 层间岩柱 动力学失稳 应力撬转效应 诱灾倾向预测
Keywords:
heavy steep-thick coal seam interlayer rock pillar dynamic instability stress leverage rotation-effect(SLRE) induced hazard-prone prediction
分类号:
TD 324
文献标志码:
A
摘要:
乌鲁木齐矿区乌东煤矿开采条件复杂,急倾斜煤层群间赋存均厚60m倾斜岩柱,近年来已发生十余次动力灾害。针对急倾斜岩柱动力学失稳诱灾倾向预报,采用开采条件调查、理论分析和现场监测等方法,综合预测了深层岩柱动力学失稳诱灾倾向区域。首先,基于现场调查成果,构建了急倾斜岩柱失稳应力撬转效应(stress leverage rotation effect,SLRE)力学模型,揭示了岩柱动力学失稳诱发动力学灾害的力学机制。再次,通过现场微震监测,分析了岩柱破断失稳微震—能量—空间演化规律:急倾斜岩柱动态失稳经历扰动破裂、应力挤压、断裂失稳和应力重构阶段。最后,综合分析并圈定了深层岩柱动力失稳诱灾倾向区域,其分别位于B1-2煤层+500~+510 m区域开采煤体、B3-6煤层+475~+485 m区域岩柱侧煤体,这为现场灾害防控设计和安全开采提供了科学依据。
Abstract:
There existed 60 m thick and steep rock-pillar at Wudong mine.More than ten dynamic accidents happened in recent years.For prediction on dynamic destabilization and induced hazard-prone to interlayer steep rock pillar,some methods using in-situ mining condition investigation,theoretical analysis and field monitoring were achieved.The induced hazard-prone was predicted of the deeper rock-mass damage and dynamic instability of heavy steep-thick rock pillar.Firstly,the mechanical model on stress leverage rotation-effect(SLRE)was built based on in-situ mining condition investigation,and the mechanism of induced hazard was analyzed.Then,according to the field monitoring and analysis,we indicated that the spatial distribution and its evolutionary law of micro-seismic energy releasing of rock pillar and hazard-prone zone.The steep pillar dynamic destabilization related to disturbance burst,stress squeezing,damage destabilization and stress redistribution.Finally,the induced hazard-prone region and ranging under SLRE have been determined,respectively,locating coal excavated from +500~+510 m of B1-2 and coal neighboring rock pillar to +475~+485 m of B3-6.This provides a scientific proof for hazard control and safe mining.

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备注/Memo

备注/Memo:
收稿日期:2015-02-20 责任编辑:刘 洁 基金项目:科技部973计划前期专项(2014CB260404); 国家自然科学基金(U1361206); 新疆科技支撑计划项目(201432102) 通讯作者:来兴平(1971-),男,宁夏平罗人,教授,博导,E-mail:laixp@xust.edu.cn
更新日期/Last Update: 1900-01-01