|本期目录/Table of Contents|

[1]梁冰,贾立锋,孙维吉.浅埋煤层综放开采上覆岩层活动规律相似模拟试验[J].中国安全生产科学技术,2014,10(9):30-35.[doi:10.11731/j.issn.1673-193x.2014.09.005]
　LIANG Bing,JIA Li-feng,SUN Wei-ji.Similarity simulation experimental study on movement behavior of overlying strata in full\|mechanized caving mining of shallow coal seam[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2014,10(9):30-35.[doi:10.11731/j.issn.1673-193x.2014.09.005]
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浅埋煤层综放开采上覆岩层活动规律相似模拟试验
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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9期
页码:
30-35
栏目:
学术论著
出版日期:
2014-09-30

文章信息/Info

Title:
Similarity simulation experimental study on movement behavior of  overlying strata in full\|mechanized caving mining of shallow coal seam
作者:
梁冰1; 贾立锋2; 孙维吉1
（1 辽宁工程技术大学 力学与工程学院，辽宁 阜新 123000；2 辽宁工程技术大学 矿业学院，辽宁 阜新 123000）
Author(s):
LIANG Bing1;  JIA Li-feng2;  SUN Wei-ji1
(1.Institute of Mechanics and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China;  2. Institute of Mining, Liaoning Technical University, Fuxin Liaoning 123000, China)
关键词:
〗浅埋煤层; 综放开采; 覆岩活动规律; 模拟支架; 相似模拟
Keywords:
shallow coal seam;  full-mechanized caving mining;  movement behavior of overlying strata;  simulation support;  similar simulation
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2014.09.005
文献标志码:
A
摘要:
浅埋煤层综放开采因煤层埋藏浅、采出空间大，上覆岩层活动规律仍不清楚。以辛安矿1402工作面为研究对象，采用试验研究的方法建立相似模拟试验模型，研究放顶煤开采过程覆岩破断、沉降规律和覆岩应力演化及模拟液压支架受力等规律。试验结果表明：辛安矿1402工作面放顶煤开采初次来压来压步距是73m、周期性来压步距是315m、垮落角是59°；支架工作阻力88%分布在5000~7000kN，且分布呈现正弦波形，分布合理；上覆岩层垮落后在采空区内可形成“应力拱”结构，拱脚的应力大，沉降量多，应力拱结构支撑上覆垮落岩层；老顶垮落后可形成铰接结构，形成铰接结构的岩层旋转的角度可以通过函数公式计算。
Abstract:
The production space is wide in full-mechanized caving mining of shallow coal seam, so the movement behaviors of overlying strata are still unclear. Taking the No.1402 working face in Xin'an Coal Mine as the research object, the experimental research method was applied to establish the model of similarity simulation experiment, and the variation of fracture, stress, subsidence of overlying strata and the stress of simulation support during test process were studied. The results showed that the distances of the first weighting and periodic weighting of the roof were 73 m and 31.5 m respectively, and the caving angel was 59 degrees. 88% of the supports resistance distributed in 5000~7000kN, and the distribution presented a sinusoidal waveform, which was a reasonable distribution. After the caving of overlying strata, it was easy to form stress arch structure, the corner of arch had big pressure and subsidence, and the structure could support the caving rocks. A hinged structure formed after the caving of main roof, and the rotation angle of articulated structure of the overlying strata could be calculated with a function formula.

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备注/Memo

备注/Memo:
国家重点基础研究发展计划(973）项目（2011CB201206)
更新日期/Last Update: 2014-09-30