|本期目录/Table of Contents|

[1]张勋,邓存宝,王继仁,等.纵深大区域煤层群开采覆岩活动规律相似模拟[J].中国安全生产科学技术,2015,11(6):5-11.[doi:10.11731/j.issn.1673-193x.2015.06.001]
 ZHANG Xun,DENG Cun-bao,WANG Ji-ren,et al.Physical analogous simulation on activity law of overlying strata for the depth and large area coal seam group mining[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(6):5-11.[doi:10.11731/j.issn.1673-193x.2015.06.001]
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纵深大区域煤层群开采覆岩活动规律相似模拟
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年6期
页码:
5-11
栏目:
学术论著
出版日期:
2015-06-30

文章信息/Info

Title:
Physical analogous simulation on activity law of overlying strata for the depth and large area coal seam group mining
作者:
张勋1邓存宝2王继仁12王钰博13
(1. 辽宁工程技术大学 矿业学院,辽宁 阜新123000;2. 辽宁工程技术大学 安全科学与工程学院,辽宁 阜新123000;3. 大同煤矿集团有限责任公司,山西 大同037003)
Author(s):
ZHANG Xun1 DENG Cun-bao2 WANG Ji-ren12 WANG Yu-bo13
(1. College of Mining Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China; 2. College of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China; 3. Datong Coal Mine Group, Datong Shanxi 037003, China)
关键词:
近距离煤层群特厚煤层覆岩活动规律耦合系统相似材料模拟
Keywords:
close-distance seam group extremely thick coal seam activity law of overlying strata coupling system similar material simulation
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2015.06.001
文献标志码:
A
摘要:
以大同矿区“双系”煤层群协同开采为工程背景,相似模拟实验研究了纵深大区域煤层群开采覆岩位移、裂隙及应力演化分布规律。结果表明:侏罗系近距离煤层群采用刀柱式与走向长壁式开采交错布置方式,形成不同的组合开采模式,表现出不同的覆岩破断特征,应力集中现象突出;石炭系特厚煤层开采致使覆岩大面积垮落,与上部侏罗系煤层群形成了复杂的多层采空区连通状态,且受侏罗系煤柱叠加应力影响,工作面来压频繁、覆岩活动剧烈。纵深大区域煤层群覆岩应力应变形态作为耦合时变系统,随煤层开采经历了“平衡—失稳—平衡”循环变化过程。
Abstract:
In the engineering background of collaborative mining for the Jurassic and Carboniferous coal seam group in Datong mining area, the evolution and distribution laws about displacement, fracture and stress of overlying strata in the depth and large area coal seam group mining were studied by analogous simulation experiment. The results showed that Jurassic close-distance seam group adopts the staggered arrangement way of pillar support mining method and strike longwall mining method. Different characteristics of overlying strata breaking is presented with different combined mining mode. Overlying strata suffers obvious stress concentration. When Carboniferous extremely thick coal seam is mined, large area falling of overlying strata appears. Complex connectivity status of multi-layer goaf is formed with the upper Jurassic coal seam group. With the stress effect of Jurassic pillar, the pressure of Carboniferous working face appears frequently and lead to strenuous movement of overlying strata. Stress and strain form of overlying strata of the depth and large area coal seam group mining is considered as coupling time-varying system, and the system status experiences the cycling variation process of "balance-instability-balance" with the coal seam mining.

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备注/Memo

备注/Memo:
国家自然科学基金项目(51304112)
更新日期/Last Update: 2015-06-30