ZHANG Jie，SUN Jianping，HE Yifeng，et al. Study on floor stress distribution law and roadway layout of contiguous coal seams[J]. Coal Science and Technology，2024，52（8）：11−22
. DOI: 10.12438/cst.2023-1063| Citation: |
ZHANG Jie，SUN Jianping，HE Yifeng，et al. Study on floor stress distribution law and roadway layout of contiguous coal seams[J]. Coal Science and Technology，2024，52（8）：11−22 . DOI: 10.12438/cst.2023-1063
|
In order to explore the influence of the remaining coal pillar in the upper coal seam on the stress of the floor and the reasonable layout of the mining roadway in the lower coal seam, taking Tangshangou Coal Mine as the research object, the theoretical analysis and numerical simulation methods and a variety of influencing factors were used to construct the collaborative bearing structure model of the remaining coal pillar and the hinged rock block in the upper coal seam and the stress transfer calculation model of the floor, and the stress and influencing factors of the floor under the remaining coal pillar in the upper coal seam are studied. The research shows that the influence of the remaining coal pillars in the upper coal seam on the stress of the floor is mainly vertical stress, and the influence degree decreases with the increase of floor depth. The stress-increasing area of the floor under the remaining coal pillar is ellipsoidal. The influencing factors of the stress-increasing area of the floor are analyzed, and the quantitative relationship between the influence of different factors on the range of the stress-increasing area is obtained. The peak stress of the coal pillar plays a decisive role in the distribution of the stress-increasing area of the floor. According to the stress distribution of the floor and the results of theoretical calculation and numerical simulation, it is determined that the reasonable stagger distance between the 8 coal pillar and the 11−1 coal mining roadway in Tangshangou Coal Mine should be 20—25 m. This study reveals the stress transfer mechanism of the lower floor of the coal pillar left in the upper coal seam, clarifies the distribution and influencing factors of the floor stress increase area, and obtains the determination method of the reasonable stagger value of the roadway-coal pillar, which can provide a theoretical basis for the reasonable layout of the lower coal seam mining roadway.
| [1] |
钱鸣高,许家林,王家臣. 再论煤炭的科学开采[J]. 煤炭学报,2018,43(1):1−13.
QIAN Minggao,XU Jialin,WANG Jiachen. Further on the sustainable mining of coal[J]. Journal of China Coal Society,2018,43(1):1−13.
|
| [2] |
黄庆享,曹健,杜君武,等. 浅埋近距煤层开采三场演化规律与合理煤柱错距研究[J]. 煤炭学报,2019,44(3):681−689.
HUANG Qingxiang,CAO Jian,DU Junwu,et al. Research on three-field evolution and rational coal pillar staggered distance in shallow buried closely spaced multi-seam mining[J]. Journal of China Coal Society,2019,44(3):681−689.
|
| [3] |
彭高友,高明忠,吕有厂,等. 深部近距离煤层群采动力学行为探索[J]. 煤炭学报,2019,44(7):1971−1980.
PENG Gaoyou,GAO Mingzhong,LÜ Youchang,et al. Investigation on mining mechanics behavior of deep close distance seam group[J]. Journal of China Coal Society,2019,44(7):1971−1980.
|
| [4] |
李杨,任玉琦,李铁峥,等. 近距离煤层群协调开采支架工作阻力计算方法与系统[J]. 煤炭科学技术,2023,51(7):268−277.
LI Yang,REN Yuqi,LI Tiezheng,et al. Calculation and system of support resistance of shield for contugous-multiple coal seams with coordinated mining[J]. Coal Science and Technology,2023,51(7):268−277.
|
| [5] |
杨国枢,王建树. 近距离煤层群二次采动覆岩结构演化与矿压规律[J]. 煤炭学报,2018,43(S2):353−358.
YANG Guoshu,WANG Jianshu. Overburden structure evolution and pressure law of second mining in close-range coal seam group[J]. Journal of China Coal Society,2018,43(S2):353−358.
|
| [6] |
秦凯,王健达,李宏艳,等. 集中煤柱诱发下伏近距离煤层异常矿压及机理研究[J]. 煤炭科学技术,2019,47(8):102−107.
QIN Kai,WANG Jianda,LI Hongyan,et al. Study on abnormal mine pressure and mechanism of near-distance coal seam induced by concentrated coal pillar[J]. Coal Science and Technology,2019,47(8):102−107.
|
| [7] |
李春元,王泓博,石瑶玉. 上覆遗留区段煤柱对下伏煤层开采扰动影响研究[J]. 煤炭科学技术,2020,48(3):232−239.
LI Chunyuan,WANG Hongbo,SHI Yaoyu. Study on disturbing influence of overlying remaining coal Pillars on underlying coal seam mining[J]. Coal Science and Technology,2020,48(3):232−239.
|
| [8] |
曹健,黄庆享. 浅埋近距煤层煤柱集中应力传递规律分析[J]. 采矿与安全工程学报,2021,38(6):1071−1080.
CAO Jian,HUANG Qingxiang. Concentrated stress transfer mechanism of coal Pillars in shallow-buried closely spaced multi-seam mining[J]. Journal of Mining & Safety Engineering,2021,38(6):1071−1080.
|
| [9] |
侯运炳,何尚森,谢生荣. 近距离煤层层间基本顶损伤及破断规律研究[J]. 岩土力学,2017,38(10):2989−2999,3008.
HOU Yunbing,HE Shangsen,XIE Shengrong. Damage and rupture laws of main roof between coal seams with a close distance[J]. Rock and Soil Mechanics,2017,38(10):2989−2999,3008.
|
| [10] |
于斌,霍丙杰. 多层叠加煤柱覆岩结构特征及对下伏煤层矿压显现影响[J]. 岩石力学与工程学报,2017,36(S1):3374−3381.
YU Bin,HUO Bingjie. Structure characteristics of multi-layer superimposed coal pillar and its influence on strata behavior for underlying coal seam[J]. Chinese Journal of Rock Mechanics and Engineering,2017,36(S1):3374−3381.
|
| [11] |
张杰,何义峰. 浅埋煤层群开采裂隙演化及组合承载结构破断支架载荷研究[J]. 煤炭科学技术,2023,51(9):65−76.
ZHANG Jie,HE Yifeng. Research on the evolution of mining fissures in shallow coal seam groups and the fracture support load of combined bearing structures[J]. Coal science and technology,2023,51(9):65−76.
|
| [12] |
金珠鹏,杨增强,刘国栋,等. 煤层群开采遗留煤柱效应及跨掘巷道围岩控制研究[J]. 煤炭科学技术,2022,50(9):1−9.
JIN Zhupeng,YANG Zengqiang,LIU Guodong,et al. Study on effect of residual coal pillar in coal seam group mining and surrounding rock control of cross-excavation roadway[J]. Coal Science and Technology,2022,50(9):1−9.
|
| [13] |
黄庆享,曹 健. 浅埋近距煤层开采三场演化规律及煤柱群结构控制效应[J]. 煤炭学报,2021,46(S1):1−9.
HUANG Qingxiang,CAO Jian. Research on three-field evolution and control effect of Pillars structural in shallow buried closely spaced multi-seams mining[J]. Journal of China Coal Society,2021,46(S1):1−9.
|
| [14] |
王志强,郭 磊,苏泽华,等. 倾斜中厚煤层错层位外错式巷道布置及相邻巷道联合支护技术[J]. 煤炭学报,2020,45(2):542−555.
WANG Zhiqiang,GUO Lei,SU Zehua,et al. Layout and combined support technology of alternate exterior stagger arrang- ement roadway and adjacent roadways in inclined and medium-thick coal seam[J]. Journal of China Coal Society,2020,45(2):542−555.
|
| [15] |
王泓博,张 勇,庞义辉. 近距离煤层下行跨煤柱开采巷道的合理布局[J]. 东北大学学报(自然科学版),2023,44(1):100−109.
WANG Hongbo,ZHANG Yong,PANG Yihui. Rational layout of roadway for downward cross-pillar mining in close distance coal seams[J]. Journal of Northeastern University (Natural Science),2023,44(1):100−109.
|
| [16] |
ZHANG J,HE Y F,YANG T,et al. Coevolution mechanism and branch of pillar-overburden fissures in shallow coal seam mining[J]. Energy Science & Engineering,2023,11(5):1630−1642.
|
| [17] |
王龙飞,常泽超,杨战标,等. 深井近距离煤层群采空区下回采巷道联合支护技术[J]. 采矿与安全工程学报,2018,35(4):686−692.
WANG Longfei,CHANG Zechao,YANG Zhanbiao,et al. Combined support technology of roadway under mined gob of ultra-distance seams in deep mine[J]. Journal of Mining & Safety Engineering,2018,35(4):686−692.
|
| [18] |
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.
|
| [19] |
曹耀华,李云婷. 深部近距离下位煤层回采巷道围岩变形控制[J]. 煤炭科学技术,2021,49(9):76−81.
CAO Yaohua,LI Yunting. Deformation control of surrounding rocks of mining roadway in deep and close lower coal seam[J]. Coal Science and Technology,2021,49(9):76−81.
|
| [20] |
钱鸣高,石平五,许家林. 矿山压力与岩层控制[M]. 2版. 徐州:中国矿业大学出版社,2010.
|
| [21] |
侯朝炯,马念杰. 煤层巷道两帮煤体应力和极限平衡区的探讨[J]. 煤炭学报,1989,14(4):21−29.
HOU Chaojiong,MA Nianjie. Stress in in-seam roadway sides and limit equilibrium zone[J]. Journl of China Coal Society,1989,14(4):21−29.
|
| [22] |
徐芝纶. 弹性力学简明教程[M]. 4版. 北京:高等教育出版社,2013:84−86.
|
| [1] | BAO Xiankai, QIAO Jianlong, CUI Guangqin, WANG Lingyu, TIAN Baolong, WANG Lizhi. Damage and crack propagation evolution of coal rock under combined voltage discharge in water[J]. COAL SCIENCE AND TECHNOLOGY, 2025, 53(3): 248-263. DOI: 10.12438/cst.2024-1406 |
| [2] | GENG Diandong, QI Xianyin, FU Peng, WANG Shengwei, KE Ting. Mechanical properties and damage constitutive model of mud shale under different drilling fluids immersion[J]. COAL SCIENCE AND TECHNOLOGY, 2023, 51(10): 109-118. DOI: 10.13199/j.cnki.cst.2022-1491 |
| [3] | DU Yuanyuan, SUN Hai, MA Liqiang, HAN Jie, FU Yu, LI Jiaqi, WANG Wei. Characteristics of infrared radiation response during coal damage evolution[J]. COAL SCIENCE AND TECHNOLOGY, 2022, 50(9): 67-74. |
| [4] | CHENG Xiaoyu, LI Shugang, GONG Xuanping. Experimental study on damage and failure characteristics of similar materials with prefabricated fracture sandstone[J]. COAL SCIENCE AND TECHNOLOGY, 2022, 50(2): 171-178. |
| [5] | ZHANG Tianjun, GUO Hailong, JING Chen, ZHANG Lei, WANG Kang. The mechanism of meso-crack damage evolution in the failure process of porous soft coal specimens[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(12): 96-103. |
| [6] | LIU Shuai, YANG Gengshe, DONG Xihao. Experimental study on influence of wetting-drying cycles on mechanical characteristics and damage of red sandstone[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (4). |
| [7] | XU Chao, WANG Shuo, WANG Yiran, SONG Guijun, CAI Yongbo, FU Qiang. Experiments study on effects of loading and unloading rates on damage-permeability aging characteristics of gas-bearing coal[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (5). |
| [8] | LYU Hongmiao, LIU Wenbo. Study on strain softening model of sandstone based on energy principle[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (4). |
| [9] | ZHANG Tianjun DONG Xiaogang PAN Hongyu ZHANG Lei, . Study on uniaxial compression damage evolution of soft coal briquette based on speckle number[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (11). |
| [10] | Zhang Guanghui Ouyang Zhenhua Deng Zhigang Wang Yin Liu Bo, . Study on energy dissipation and damage evolution of bump proneness coal under cyclic loadings[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (2). |
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: