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[1]翟晓荣,吴基文,沈书豪,等.断层带边界岩体采动应力特征相似材料模拟研究[J].中国安全生产科学技术,2014,10(5):56-61.[doi:10.11731/j.issn.1673-193x.2014.05.009]
　ZHAI Xiaorong,WU Jiwen,SHEN Shuhao,et al.Study on similar material simulation of rock mass mining stress at fault boundary[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2014,10(5):56-61.[doi:10.11731/j.issn.1673-193x.2014.05.009]
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断层带边界岩体采动应力特征相似材料模拟研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
10
期数:
2014年5期
页码:
56-61
栏目:
学术论著
出版日期:
2014-05-31

文章信息/Info

Title:
Study on similar material simulation of rock mass mining stress at fault boundary
文章编号:
20140509
作者:
翟晓荣1; 吴基文1; 沈书豪1; 韩 云2
（1.安徽理工大学 地球与环境学院，安徽 淮南 232001；
2.上海大屯能源股份有限公司龙东煤矿， 江苏 徐州 221613）
Author(s):
ZHAI Xiaorong1;  WU Jiwen1; SHEN Shuhao1; HAN Yun2
（1. School of Earth and Environment, Anhui University of Science and Technology, Huainan Anhui 232001,China;
2. Longdong Coal Mine,Shanghai Datun energy Corp. Ltd., Xuzhou Jiangsu 221613, China ）
关键词:
断层带; 煤层底板; 相似材料模拟; 断层煤柱; 采动应力
Keywords:
fault zone;  coal floor;  similar material simulation;  fault coal pillar;  mining stress
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2014.05.009
文献标志码:
A
摘要:
为了研究断层带边界岩体的采动应力特征，以龙东煤矿F张断层两侧岩体地层为原型，建立了断层带相似材料模型，对煤柱缩小过程中，近断层带煤层底板采动应力特征及断层带两侧岩体应力变化规律进行了跟踪监测。研究结果表明：随着工作面的推进，超前支撑应力在煤层底板下30m处，反应最为明显；当煤柱宽度减小至30m时，底板集中应力达到最大值为12764kPa，应力集中系数28；煤柱宽度20m时，煤层底板深部近断层带附近开始明显卸压，同时断层带两侧应力变化出现明显差异，显示出断层带对应力传递的影响，上下盘表现出不同的采动特征，容易造成断层的“活化”，研究结果可为断层煤柱的合理留设和巷道布置提供依据和参考。
Abstract:
Taking the strata at both sides of fault Zhang in Longdong Coal Mine as the prototype, the similar material model of fault zone was constructed to study the characteristic of mining stress in rock mass near the fault zone. The mining stress characteristics of coal floor near the fault zone and the change regulation of rock mass stress at two sides of the fault were tracked and monitored with the reducing of coal pillar. The results showed that, with the advancing of working face, the abutment stress appeared the most obvious reaction in the depth of 30m under the coal floor. When the coal pillar width reduced to 30m, the concentrated stress in coal floor reached the maximum which was 127.64kpa and the concentration factor was 2.8. When the coal pillar width was 20m, an obvious pressure relief phenomenon appeared in the deep coal floor near the fault zone. Meanwhile, the variation of stress in both sides of the fault appeared obvious difference, which showed the influence of stress transfer caused by fault zone. The hanging and foot wall of the fault appeared different mining characteristics which may lead to the activation of the fault. The research results can provide basis and reference for the reasonable design of fault coal pillar and roadway.

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备注/Memo

备注/Memo:
国家自然科学基金项目（41272278）；高等学校博士学科点专项科研基金（20123415110002）
更新日期/Last Update: 2014-05-31