近距离不规则采空区下综放煤巷分区控制研究
Study on sub-regional control of fully mechanized top-coal caving roadway under close irregular goa
-
摘要: 为了解决近距离煤层巷道围岩大变形破坏的控制难题，以小峪煤矿不规则采空区下近距离厚煤层综放煤巷为工程背景，将试验巷道划分为普通段、采空区下及残留煤柱下等多个区域，通过地质雷达探测、钻孔窥视、理论计算、数值模拟等方法对比分析了不同区域煤巷围岩变形破坏特征。结果表明：近距离不规则采空区下综放煤巷围岩塑化破坏范围为2.15 m；工作面超前剧烈采动影响距离为26 m；综放煤巷回采帮松动范围大于实体煤帮0.5 m。基于此，提出了普通区煤巷常规支护及采空区下与残留煤柱下煤巷槽钢锚索加强支护的分区联合控制技术，工程实践表明分区组合支护技术显著控制了围岩大变形，保障了综放工作面的安全回采。Abstract: In order to solve the control problems of large deformation of roadway surrounding rock in close coal seams, taking the fully mechanized top-coal caving roadway in close thick coal seams under irregular goaf of Xiaoyu Coal Mine as the engineering background, the test roadway is divided into ordinary section, under the goaf and under the residual coal pillar. The failure characteristics of surrounding rock of coal roadway in different areas are compared and analyzed by geological radar detection, borehole peeping, theoretical calculation and numerical simulation. The results show that: the plastic zone range of fully mechanized top-coal caving roadway in close thick coal seam under irregular goaf is 2.15 m; the influence distance of advanced and violent mining in the coal face is 26 m; the loosening range of the mining side of the roadway is 0.5 m larger than that of solid coal. Based on this, a sub-regional combined control technology of conventional support in general area and strengthened support of channel-steel anchor cable under the goaf and under the residual coal pillar is proposed. The engineering practice shows that the combined support technology can effectively control the large deformation of surrounding rock, and it ensures the safe mining of fully mechanized top-coal caving face.
-
-
[1] 郝登云，吴拥政，陈海俊，等．采空区下近距离特厚煤层回采巷道失稳机理及其控制[J]．煤炭学报，2019， 44（9）：2682－2690. HAO Dengyun, WU Yongzheng, CHEN Haijun, et al. Instability mechanism and prevention technology of roadway in close distance and extra thick coal seam under goaf[J]. Journal of China Coal Society, 2019, 44（9）: 2682-2690.
[2] 张宁波，刘长友，陈宝宝，等．极近距离煤层下位厚煤层综放煤矸放落流动规律及放煤工艺参数确定[J]．采矿与安全工程学报，2021，38（5）：911－918. ZHANG Ningbo, LIU Changyou, CHEN Baobao, et al. Determination of fully-mechanized top coal caving law and parameters of thick lower seam in ultra-close multiple-seams[J]. Journal of Mining & Safety Engineering, 2021, 38（5）: 911-918.
[3] 黄庆享，韩金博．浅埋近距离煤层开采裂隙演化机理研究[J]．采矿与安全工程学报，2019，36（4）：706－711. HUANG Qingxiang, HAN Jinbo. Study on fracture evolution mechanism of shallow-buried close coal seam mining[J]. Journal of Mining & Safety Engineering, 2019, 36（4）: 706-711.
[4] 戴文祥，潘卫东，李猛，等．近距离煤层强扰动巷道布置与支护技术研究[J]．煤炭科学技术，2020，48（12）：61－67. DAI Wenxiang, PAN Weidong, LI Meng, et al. Study on layout and support technology of strongly disturbed roadway in contiguous coal seam[J]. Coal Science and Technology, 2020, 48（12）: 61-67.
[5] 孟浩．基于能量释放法的近距离煤层巷道布置位置优化分析[J]．煤矿安全，2018，49（2）：194－198. MENG Hao. Optimization analysis of roadway layout of close coal seam based on energy releasing method[J]. Safety in Coal Mines, 2018, 49（2）: 194-198.
[6] 李国栋，刘洪林，王宏志．极近距离下位煤层回采巷道合理布置及围岩控制技术研究[J]．煤炭工程，2021， 53（7）：42－47. LI Guodong, LIU Honglin, WANG Hongzhi, et al. Surrounding rock control and reasonable layout of roadway in lower seam of extremely close coal seam[J]. Coal Engineering, 2021, 53（7）: 42-47.
[7] 王志强，高健勋，武超，等．近距离煤层上行开采巷道优化布置及煤层卸压效果试验分析[J]．中国安全生产科学技术，2020，16（3）：61－67. WANG Zhiqiang, GAO Jianxun, WU Chao, et al. Testing analysis on optimized layout of ascending mining roadway and effect of coal seam pressure relief in close distance coal seam[J]. Journal of Safety Science and Technology, 2020, 16（3）: 61-67.
[8] 张升，张吉雄，闫浩，等．极近距离煤层固体充填充实率协同控制覆岩运移规律研究[J]．采矿与安全工程学报，2019，36（4）：712－718. ZHANG Sheng, ZHANG Jixiong, YAN Hao, et al. Overlying strata movement coordinated with the compression ratio of backfilling solid in ultra-close coal seams[J]. Journal of Mining & Safety Engineering, 2019, 36（4）: 712-718.
[9] 王恩，谢生荣，陈冬冬，等．剧烈采动影响煤巷围岩偏应力分布规律与控制[J]．采矿与安全工程学报，2021，38（2）：276－285. WANG En, XIE Shengrong, CHEN Dongdong, et al. Distribution laws and control of deviatoric stress of surrounding rock in the coal roadway under intense mining[J]. Journal of Mining & Safety Engineering, 2021, 38（2）: 276-285.
[10] 商和福，宁建国，杨尚，等．近距离煤层不规则遗留煤柱下回采巷道围岩稳定性研究[J]．煤矿安全，2019， 50（5）：273－276. SHANG Hefu, NING Jianguo, YANG Shang, et al. Study on surrounding rock stability of mining roadway under irregular coal pillar of close distance coal seams[J]. Safety in Coal Mines, 2019, 50（5）: 273-276.
[11] 康红普，徐刚，王彪谋，等．我国煤炭开采与岩层控制技术发展40ａ及展望[J]．采矿与岩层控制工程学报，2019，1（2）：7－39. KANG Hongpu, XU Gang, WANG Biaomou, et al. Forty years development and prospects of underground coal mining and strata control technologies in China[J]. Journal of Mining and Strata Control Engineering, 2019, 1（2）: 7-39.
[12] 谢生荣，王恩，陈冬冬，等．深部强采动大断面煤巷围岩外锚－内卸协同控制技术研究[J/OＬ]．煤炭学报：1－11.[2022-04-13].DOI:10.13225/j.cnki.jccs.XR21. 1990. XIE Shengrong, WANG En, CHEN Dongdong, et al. Collaborative control technology of external anchor-internal unloading of surrounding rock in deep large-section coal roadway under strong mining influence[J/OL]. Journal of China Coal Society, 2022:1-11.[2022- 04-13]. DOI: 10.13225/j.cnki.jccs.XR21.1990
[13] 岳喜占，涂敏，李迎富，等．近距离煤层开采遗留边界煤柱下底板巷道采动附加应力计算[J]．采矿与安全工程学报，2021，38（2）：246－252. YUE Xizhan, TU Min, LI Yingfu, et al. Calculation of subsidiary mining stress in floor roadway under the remaining boundary pillar of close coal seam mining[J]. Journal of Mining & Safety Engineering, 2021, 38（2）: 246-252.
[14] 尹时雨．上覆旺采采空区对下部近距离煤层开采矿压分布规律的影响与对策分析[J]．煤矿安全，201950（8）：137－140. YIN Shiyu. Influence of overlying wongawilli mining goaf on rock pressure distribution law of lower short-distance coal seam and its countermeasures[J]. Safety in Coal Mines, 2019, 50（8）: 137-140.
[15] 何富连，康庆涛，殷帅峰，等．近距离煤层顶板煤柱集中应力影响机制[J]．采矿与安全工程学报，2020，37（6）：1077－1083. HE Fulian, KANG Qingtao, YIN Shuaifeng, et al. Influence mechanism of concentrated stress on coal roof pillars of close coal seam[J]. Journal of Mining & Safety Engineering, 2020, 37（6）: 1077-1083.
[16] 王厚柱，鞠远江，秦坤坤，等．深部近距离煤层开采底板破坏规律实测对比研究[J]．采矿与安全工程学报，2020，37（3）：553－561. WANG Houzhu, JU Yuanjiang, QIN Kunkun, et al. A comparative study on floor failure law in deep and short-distance coal seam mining[J]. Journal of Mining & Safety Engineering, 2020, 37（3）: 553-561.
[17] 王寅，付兴玉，孔令海，等．近距离煤层群上行式开采悬空结构稳定性研究[J]．煤炭科学技术，2020，48（12）：95－100. WANG Yin, FU Xingyu, KONG Linghai, et al. Study on stability of dangling structure in ascending mining contiguous coal seams[J]. Coal Science and Technology, 2020, 48（12）: 95-100.
[18] 蔡美峰．深部开采围岩稳定性与岩层控制关键理论和技术[J]．采矿与岩层控制工程学报，2020，2（3）：5－13. CAI Meifeng. Key theories and technologies for surrounding rock stability and ground control in deep mining[J]. Journal of Mining and Strata Control Engineering, 2020, 2（3）: 5-13.
[19] 赵洪宝，程辉，吉东亮，等．近距离煤层回采巷道非对称性破坏机理与演化规律研究[J]．中国矿业大学学报，2021，50（6）：1029－1040. ZHAO Hongbao, CHENG Hui, JI Dongliang, et al. Study of the mechanism and evolution law of unsymmetrical failure of the mining roadway in close distance coal seam[J]. Journal of China University of Mining & Technology, 2021, 50（6）: 1029-1040.
[20] 方保明．深部煤层采空区下巷道支护技术[J]．煤矿安全，2021，52（12）：121－127. FANG Baoming. Support technology for gateway under goaf in deep coal seams[J]. Safety in Coal Mines, 2021, 52（12）: 121-127.
[21] 张宝优．极近距离煤层错层位巷道布置方式及围岩控制技术研究[J]．煤炭科学技术，2021，49（8）：88-95. ZHANG Baoyou. Study on layout of staggered roadway and surrounding rock control technology for ultra contiguous coal seams[J]. Coal Science and Technology, 2021, 49（8）: 88-95.
[22] 郭建伟．近距离煤层下位煤层回采巷道支护技术[J]．煤矿安全，2019，50（10）：139－144. GUO Jianwei. Supporting technology of roadway in lower seam of short distance coal seams[J]. Safety in Coal Mines, 2019, 50（10）: 139-144.
[23] 康红普．煤炭开采与岩层控制的时间尺度分析[J]．采矿与岩层控制工程学报，2021，3（1）：5－27. KANG Hongpu. Temporal scale analysis on coal mining and strata control technologies[J]. Journal of Mining and Strata Control Engineering, 2021, 3（1）: 5-27.
[24] 姚强岭，朱贵伟，郑闯凯，等．厚煤层沿空巷道主动式超前支护技术与实践[J]．采矿与岩层控制工程学报，2022，4（1）：5－15. YAO Qiangling, ZHU Guiwei, ZHENG Chuangkai, et al. Active advanced support technology and practice of thick coal seam along goaf roadway[J]. Journal of Mining and Strata Control Engineering, 2022, 4（1）: 5-15.
[25] WANG En, XIE Shengrong. Determination of coal pillar width for gob-side entry driving in isolated coal face and its control in deep soft-broken coal seam: a case study[J]. Energy Science & Engineering, 2022, 50（10）: 139-144. [26] HE Pengfei, KULATILAKE Pinnaduwa H S W, LIU Dongqiao, et al. Development of new three-dimensional coal mass strength criterion[J]. International Journal of Geomechanics, 2017, 17（3）: 04016067. -
期刊类型引用(2)
1. 马广兴，王东杰，陈立伟，边乐. 穿层钻孔帷幕注浆一体化技术的实践研究. 矿业研究与开发. 2024(04): 144-151 . 
百度学术
2. 张国材. 正文煤矿采空区下回采巷道支护应用分析. 江西煤炭科技. 2024(02): 14-17 . 百度学术
其他类型引用(0)
计量
- 文章访问数: 24
- HTML全文浏览量: 0
- PDF下载量: 18
- 被引次数: 2
下载:
