双回撤通道综采工作面末采段覆岩运动特征与控制
Characteristics of overlying strata movement and control technology of final mining section in fully mechanized mining face with double retracting passage
-
摘要: 为了解决锦界煤矿综采工作面末采期间矿压显现剧烈，回撤通道围岩变形大、难以控制的问题，以31115工作面开采为例，采用理论分析、数值计算相结合的方法，研究了双回撤通道综采工作面末采段覆岩失稳运动形式、围岩应力分布规律、巷道变形规律以及围岩稳定性控制技术；提出了基于控制覆岩基本顶破断位置的末采段停采让压及强制放顶等应力转移技术。结果表明：末采贯通时工作面基本顶失稳运动形式分为滑落失稳和回转失稳，回转失稳引起的末采期间区域应力集中程度比滑落失稳大；当工作面推进至与主回撤通道贯通前10 m时，主回撤通道明显受到工作面采动影响，区域应力集中程度随工作面与主回撤通道间煤柱宽度的缩小而增大；采取的相关控制措施效果良好。Abstract: In order to solve the problems of severe mining pressure during the final mining of fully mechanized mining face in Jinjie Coal Mine, large deformation of surrounding rock in the withdrawal channel and difficult to control, based on the background of 31115 working face mining in Jinjie Coal Mine, a combination of theoretical analysis and numerical calculation was used to study the overburden instability movement form, surrounding rock stress distribution law, roadway deformation law and surrounding rock stability control technology in the final mining section of fully mechanized mining face with double retraction passage. The stress transfer techniques, such as stoping concession pressure and forced caving, are proposed based on controlling the position of the basic roof of overburden. The results show that the basic roof instability of working face can be divided into sliding instability and rotary instability, and the regional stress concentration caused by rotary instability is greater than that caused by sliding instability; when the working face advances to 10 m before connecting with the main drawback channel, the main drawback channel is obviously affected by the mining of the working face, and the regional stress concentration increases with the narrowing of the width of the coal pillar between the working face and the main drawback channel. The relevant control measures taken are effective.
-
-
[1] 钱鸣高．煤炭的科学开采[J]．煤炭学报，2010，35（4）： 529－534. QIAN Minggao. On sustainable coal mining in China[J]. Journal of China Coal Society, 2010, 35（4）: 529.
[2] 许家林，朱卫兵，王晓振，等．浅埋煤层覆岩关键层结构分类[J]．煤炭学报，2009，34（7）：865－870. XU Jialin, ZHU Weibing, WANG Xiaozhen, et al. Classification of key strata structure of overlying strata in shallow coal seam[J]. Journal of China Coal Society, 2009, 34（7）: 865-870.
[3] 郭文兵，王云广．基于绿色开采的高强度开采定义及其指标体系研究[J]．采矿与安全工程学报，2017，34（4）：616－623. GUO Wenbing, WANG Yunguang. The definition of high-intensity mining based on green coal mining and its index system[J]. Journal of Mining & Safety Engineering, 2017, 34（4）: 616-623.
[4] 黄庆享．浅埋煤层的矿压特征与浅埋煤层定义[J]．岩石力学与工程学报，2002，21（8）：1174－1177. HUANG Qingxiang. Ground pressure behavior and definition of shallow seams[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21（8）: 1174-1177.
[5] 王博楠．回撤通道围岩变形破坏机理及其控制技术研究[D]．西安：西安科技大学，2017. [6] 王晓振，鞠金峰，许家林．神东浅埋综采面末采段让压开采原理及应用[J]．采矿与安全工程学报，2012，29（2）：151－156. WANG Xiaozhen, JU Jinfeng, XU Jialin. Theory and applicable of yield mining at ending stage of fully mechanized face in Shallow seam at Shendong mine area[J]. Journal of Mining & Safety Engineering, 2012, 29（2）: 151-156.
[7] 杨尚，宁建国，商和福，等．浅埋煤层综采工作面回撤通道顶板支护技术研究[J]．煤炭工程，2019，51（11）：69－73. YANG Shang, NING Jianguo, SHANG Hefu, et al. Study on roof support technology for retracing channel of fully mechanized mining face in shallow seam[J]. Coal Engineering, 2019, 51（11）: 69-73.
[8] 杨仁树，李永亮，朱晔，等．特殊条件下大采高工作面回撤通道稳定性控制研究[J]．煤炭科学技术，2017，45（1）：10－15. YANG Renshu, LI yongliang, ZHU Ye, et al. Study on stability control of equipment removal channel for high cutting mining face under special condition[J]. Coal Science and Technology, 2017, 45（1）: 10-15.
[9] 许家林，朱卫兵，鞠金峰．浅埋煤层开采压架类型[J]．煤炭学报，2014，39（8）：1625－1634. XU Jialin, ZHU Weibing, JU Jinfeng. Supports crushing types in the longwall mining of shallow seams[J]. Journal of China Coal Society, 2014, 39（8）: 1625-1634.
[10] 吕华文．预掘回撤通道稳定性机理分析及应用[J]．煤炭学报，2014，39（Ｓ1）：50－56. LYU Huawen. The mechanism of stability of pre-driven rooms and the practical techniques[J]. Journal of China Coal Society, 2014, 39（S1）: 50-56.
[11] 王兆会，孔德中，王闯，等．浅埋高强度采场回撤阶段围岩破断机理及控制[J]．煤炭工程，2014，46（9）：76－79. WANG Zhaohui, KONG Dezhong, WANG Chuang, et al. Mechanism and control of surrounding rock breakdown at mining equipment withdrawn stage from high intensity coal mining face in shallow depth seam[J]. Coal Engineering, 2014, 46（9）: 76-79.
[12] 吴志刚，田西勇．大采高工作面回撤通道矿压规律实测[J]．煤矿开采，2013，18（6）：78－80. WU Zhigang, TIAN Xiyong. Underground pressure rule observation in dismantle roadway of large-mining-height mining face[J]. Coal Mining Technology, 2013, 18（6）: 78-80.
[13] 李兴华，原登亮，薛瑞瑞．综采工作面回撤巷道支护技术优化研究与应用[J]．煤炭工程，2016，48（3）：46－48. LI Xinghua, YUAN Dengliang, XUE Ruirui. Optimization and application of support technology for retracement roadway in fully mechanized working face[J]. Coal Engineering, 2016, 48（3）: 46-48.
[14] 谷拴成，黄荣宾，李金华，等．工作面贯通前矿压调整时剩余煤柱稳定性分析[J]．采矿与安全工程学报，2017，34（1）：60－66. GU Shuancheng, HUANG Rongbin, LI Jinhua, et al. Stability analysis of un-mined coal pillars during the pressure adjustment prior to working face transfixion[J]. Journal of Mining & Safety Engineering, 2017, 34（1）: 60-66.
[15] 韩龙．综采工作面末采及回撤矿压显现规律与顶板控制技术[J]．煤矿安全，2017，48（Ｓ1）：24－28. HAN Long. Strata behaviors laws of end-mining and withdrawing of fully mechanized coal mining face and roof control technology[J]. Safety in Coal Mines, 2017, 48 （S1）: 24-28.
[16] 徐敬民，朱卫兵，鞠金峰．大柳塔煤矿综采工作面压架冒顶机理研究[J]．煤炭科学技术，2016，44（8）：109－115. XU Jingmin, ZHU Weibing, JU Jingfeng. Study on mechanism of powered support jammed and roof falling in fully-mechanized coal mining face in Daliuta Mine[J]. Coal Science and Technology, 2016, 44（8）: 109.
[17] 钱鸣高，许家林．煤炭开采与岩层运动[J]．煤炭学报，2019，44（4）：973－984. QIAN Minggao, XU Jialin. Behaviors of strata movement in coal mining[J]. Journal of China Coal Society, 2019, 44（4）: 973-984.
[18] 吕坤，赵志超，赵志强．特厚煤层综放工作面回撤通道支护技术研究[J]．煤炭科学技术，2018，46（3）：39－43. LYU Kun, ZHAO Zhichao, ZHAO Zhiqiang. Study on support technology of equipment removal channel in fully-mechanized top coal caving face in ultra-thick seam[J]. Coal Science and Technology, 2018, 46（3）: 39-43.
[19] 张金虎．破碎顶板回撤通道围岩运动规律和支护适应性研究[J]．煤炭科学技术，2015，43（12）：28－31. ZHANG Jinhu. Study on movement law of surrounding rock and support adaptability of the broken roof in return channel[J]. Coal Science and Technology, 2015, 43（12）: 28-31.
[20] 李建伟．西部浅埋厚煤层高强度开采覆岩导气裂缝的时空演化机理及控制研究[D]．徐州：中国矿业大学，2017. [21] 王桂芳．悬臂深梁的自重应力[J]．四川大学学报（工程科学版），2000，32（2）：8－12. [22] Itasca Consulting Group Inc. 3DEC: Theory and background, Section 2: Block Constituti-ve Models: User’s manual（Version 5.0）[R]. M-inneapolis: Itasca Consulting Group Inc., 2013. [23] 谷拴成，王博楠，黄荣宾，等．综采面末采段回撤通道煤柱荷载与宽度确定方法[J]．中国矿业大学学报，2015，44（6）：990－995. GU Shuancheng, WANG Bonan, HUANG Rongbin, et al. Method for determining the load on and width of coal pillar at the recovery room end of fully-mechanized longwall mining[J]. Journal of China University of Mining & Technology, 2015, 44（6）: 990-995.
[24] 吴祥业，刘洪涛，李建伟，等．重复采动巷道塑性区时空演化规律及稳定控制[J]．煤炭学报，2020，45（10）：3389－3400. WU Xiangye, LIU Hongtao, LI Jianwei, et al. Temporal-spatial evolutionary law of plastic zone and stability control in repetitive mining roadway[J]. Journal of China Coal Society, 2020, 45（10）: 3389-3400.
-
期刊类型引用(2)
1. 吴丽丽，李金鹏，武雨祺，郑贺崇. 抗冲击地压复合夹芯组合板的静、动态力学性能研究. 振动与冲击. 2024(17): 1-11+18 . 
百度学术
2. 张东超. 支撑物对预折纹吸能构件力学特性研究. 机电产品开发与创新. 2024(05): 32-36 . 百度学术
其他类型引用(1)
计量
- 文章访问数: 56
- HTML全文浏览量: 0
- PDF下载量: 11
- 被引次数: 3
下载:
