倾斜煤层动压巷道围岩应力分布规律的数值分析

金属矿山 ›› 2012, Vol. 41 ›› Issue (03): 37-41.

倾斜煤层动压巷道围岩应力分布规律的数值分析

魏思祥¹，宋锦虎²，靖洪文³

1.平顶山天安煤业股份有限公司十二矿；2.河南城建学院土木与材料工程系；3.中国矿业大学力学与建筑学院

出版日期:2012-03-27 发布日期:2012-04-18
基金资助:
* 国家自然科学基金项目（编号：51074162），“十一五”国家科技支撑计划项目（编号：2008BAB36B07）。

Numerical Analysis of the Stress in the Surrounding Rock of the Dynamic Pressure Tunnel with Inclined Seams

Wei Sixiang¹，Song Jinhu²，Jing Hongwen³

1.No.12 Mine，Pingdingshan Coal Co.，Ltd.；2.Department of Civil Engineering & Materials Science,Henan University of Urban Construction；3.School of Mechanics and Civil Engineering，China University of Mining and Technology

Online:2012-03-27 Published:2012-04-18

摘要/Abstract

摘要： 针对倾斜煤层巷道围岩应力分布规律问题，建立了不同岩层倾角的数值计算模型，计算分析了倾斜煤层在动压作用下的围岩应力变化过程。通过对计算结果的分析，得知在岩层倾角为30°~40°时，围岩集中应力区域向两帮顶角区域转移；50°~60°时，向下帮底角区域转移；70°~80°时，转移至下帮顶角区域；同时由40°开始，围岩开始显现较强的不对称性，并随岩层倾角的增大快速增大。在动压作用下，围岩不同位置处的应力随动压的增大近似同比例增大；当岩层倾角在10°~50°时，应力提高率处于0.5~2.3；50°~80°时，基本处于0.5左右。针对围岩应力分布的不对称系数分析得知，岩层倾角越大，不对称系数越大；在岩层倾角为30°~80°时，不对称系数在动压作用下基本保持不变，说明在动压作用下围岩应力会持续处于不对称状态。

关键词: 倾斜煤层, 动压巷道, 应力分析, 数值计算

Abstract: In view of the problem of the stress of the surrounding rock in the tunnel with inclined seam，the numerical model for different inclined angle was established.The stress of surrounding rock under action of ground pressure in the inclined seam was calculated.It was concluded that the concentrate stress was shift to the up corner angle while the angle of seam was between 30° and 40°.And the concentrate stress was shift to the down corner angle while the angle of seam was between 50° and 60°，and it was shift to the up corner of the down part.While the angle of seam was larger than 40°，the asymmetry was clearly and it becomes larger when the angle is larger.The stress of surround rock enlarged linear with the angle.When the angle was between the 10° and 50°，the enlarged factor was between 0.5 and 2.3.When the angle was between 50°and 80°，the factor was about 0.5.To the factor of asymmetry，it was larger when the angle was bigger.When the angle was between 30° and 80°，the factor of asymmetry was about constant and it can be concluded that the stress of surround rock was in the situation of asymmetry under the dynamic pressure.

Key words: Inclined seam, Dynamic pressure tunnel, Stress analysis, Numerical calculation

魏思祥, 宋锦虎, 靖洪文. 倾斜煤层动压巷道围岩应力分布规律的数值分析[J]. 金属矿山, 2012, 41(03): 37-41.

WEI Si-Xiang, SONG Jin-Hu, JING Hong-Wen. Numerical Analysis of the Stress in the Surrounding Rock of the Dynamic Pressure Tunnel with Inclined Seams[J]. Metal Mine, 2012, 41(03): 37-41.

[1]	姚桂宏, 金长宇, 丁成功, 祝贺超, 韩　滔, 杨智博. 深井条形矿柱安全系数计算公式优化研究[J]. 金属矿山, 2024, 53(10): 6-.
[2]	段宝福, 柴明星, 张正欣, 孙宗军. 角柱形掏槽孔布置及毫秒延时爆破效果分析与应用[J]. 金属矿山, 2023, 52(01): 151-160.
[3]	秦鹏飞. 极限平衡和数值方法在边坡工程中的应用[J]. 金属矿山, 2020, 49(06): 204-209.
[4]	刘焕春, 于建新, 焦华喆, 赵武胜. 复杂采空区充填开采对地面建筑的影响研究[J]. 金属矿山, 2020, 49(04): 39-45.
[5]	杨宇江, 路增祥. 地下采深变化的露天矿残余边坡稳定性分析[J]. 金属矿山, 2019, 48(01): 168-173.
[6]	葛永翔, 张聪瑞, 王维, 雷高, 任高峰, 吴起. 三鑫金铜矿复杂充填体下间柱回采稳定性研究[J]. 金属矿山, 2018, 47(12): 27-33.
[7]	贾海波, 任凤玉, 丁航行, 何荣兴. 某银多金属矿采空区综合治理方法[J]. 金属矿山, 2018, 47(02): 41-45.
[8]	于坤鹏, 任凤玉, 张东杰. 锡林浩特萤石矿高端壁无底柱分段崩落法[J]. 金属矿山, 2017, 46(05): 44-48.
[9]	杨捷, 王玉凯. 倾斜煤层的超高水材料混合固结充填法[J]. 金属矿山, 2015, 44(11): 51-56.
[10]	刘艳章, 陈小强, 潘世华, 邹晓甜, 张群, 张丙涛. 基于开拓巷道稳定性分析的泥河铁矿阶段开采顺序研究[J]. 金属矿山, 2015, 44(08): 6-12.
[11]	何锦龙, 伍跃胜, 刘泽东, 刘磊2. 不同降雨量对尾矿坝稳定性的影响规律分析[J]. 金属矿山, 2015, 44(08): 150-153.
[12]	张刚艳. 选煤厂下伏多层倾斜煤层采空区稳定性评价与治理技术研究[J]. 金属矿山, 2015, 44(04): 66-70.
[13]	谢俊. 二次动压巷道变形机理与控制技术研究[J]. 金属矿山, 2015, 44(03): 80-83.
[14]	谢振华, 杨栋, 范冰冰. 分层多次高压注浆预应力锚固试验与数值模拟[J]. 金属矿山, 2014, 43(11): 16-21.
[15]	王鹏举1, 周钢, 邹长磊, 王浩, 王超. 倾斜煤层沿空掘进巷道不对称支护技术[J]. 金属矿山, 2014, 43(04): 70-73.

扫码分享