| Citation: |
LIU Hui，LI Yu，SU Lijuan，et al. Surface deformation law of mining under thick loose layer and thin bedrock: taking the southern Shandong Mining Area as an example[J]. Coal Science and Technology，2023，51（9）：11−23. DOI: 10.13199/j.cnki.cst.2022-1451
|
The surface subsidence in the thick loose layer and thin bedrock mining area in the east of China has the characteristics of large subsidence value, wide movement range and long settling time. Taking a coal mine in Southern Shandong Mining Area as an example,this paper discusses the variation rules of coal seam mining surface deformation parameters under different loose layer and bedrock thickness ratio conditions, on the basis of field measurements, using FLAC3D, and establishes a surface deformation calculation model for coal seam mining under the conditions of different loose layer bedrock thickness ratios (0.25−5.00), studies the characteristics of surface deformation, analyzed the influence of ratio of loose layer thickness to bedrock thickness on the parameters of probability integral method, and quantitatively analyzed and discussed the conditions of thick loose layer and thin bedrock from the perspective of mining subsidence. Research shows: ①Under the same mining thickness conditions,when the ratio of loose layer thickness to bedrock thickness increases, the surface deformation amount obviously increases first and then decrease, when the ratio reaches a certain limit, the ground surface deformation tends to be stabilized; ②The subsidence coefficient, the horizontal movement coefficient and the tangent of the main influence angle all increase first and then decreases, and the inflection point is 1.75,1.25 and 1.25, respectively; ③The proportion of loose bed thickness in the average mining depth has great influence on the angle of draw and boundary angle. The boundary angle and the angle of draw gradually decrease with the increase of the ratio. Based on the above research, it is proposed that the ratio of 1.25−1.75 is the critical value for the condition of thick loose bedding and thin bedrock, which provides a theoretical basis and technical reference for the prediction of surface deformation and the prevention and control of mining subsidence disasters in typical thick loose layer thin bedrock mining areas in eastern China.
| [1] |
BEHERA K S,MISHRA P D,GHOSH N C,et al. Characterization of lead–zinc mill tailings, fly ash and their mixtures for paste backfilling in underground met alliferous mines[J]. Environmental Earth Sciences,2019,78(14):394.1−394.13.
|
| [2] |
NAZRUL I,SHAHADEV R,SUBRAMANYAM K V S,et al. Geochemistry and mineralogy of coal mine overburden (waste): A study towards their environmental implications[J]. Chemosphere,2021,274:129736.
|
| [3] |
许家林. 煤矿绿色开采20年研究及进展[J]. 煤炭科学技术,2020,48(9):1−15.
XU Jialin. Research and progress of coal mine green mining in 20 years[J]. Coal Science and Technology,2020,48(9):1−15.
|
| [4] |
杨昊睿,宁树正,丁 恋,等. 新时期我国煤炭产业现状及对策研究[J]. 中国煤炭地质,2021,33(S1):44−48.
YANG Haorui,NING Shuzheng,DING Lian,et al. Research on the current situation and countermeasures of my country's coal industry in the new era[J]. China Coal Geology,2021,33(S1):44−48.
|
| [5] |
左建平,孙运江,钱鸣高. 厚松散层覆岩移动机理及“类双曲线”模型[J]. 煤炭学报,2017,42(6):1372−1379.
ZUO Jianping,SUN Yunjiang,QIAN Minggao. Mechanism of overburden movement in thick loose layers and "quasi-hyperbolic" model[J]. Journal of China Coal Society,2017,42(6):1372−1379.
|
| [6] |
张惠生,顾 伟. 厚松散层浅部开采地表移动规律数值模拟研究[J]. 能源与节能,2014(3):131−134,165.
ZHANG Huisheng,GU Wei. Numerical simulation of surface movement law in shallow mining of thick loose layers[J]. Energy and Energy Conservation,2014(3):131−134,165.
|
| [7] |
蒯 洋. 厚松散层下重复开采地表变形参数研究[D]. 合肥: 安徽大学, 2018.
KUAI Yang. Research on surface deformation parameters of repeated mining under thick loose layers [D]. Hefei: Anhui University, 2018.
|
| [8] |
HU Haifeng,LIAN Xugang. Subsidence rules of underground coal mines for different soil layer thickness: Lu’an Coal Base as an example, China[J]. International Journal of Coal Science & Technology,2015,2(3):178−185.
|
| [9] |
ZHANG G B,ZHANG W Q,WANG C H,et al. Mining thick coal seams under thin bedrock-deformation and failure of overlying strata and alluvium[J]. Geotechnical and Geological Engineering,2016,34:1553−1563. doi: 10.1007/s10706-016-0061-3
|
| [10] |
余学祥,秦永洋,孙兴平,等. 顾桥煤矿11-2煤综采面地表移动变形基本特征分析[J]. 矿山测量,2009(6):8−12.
YU Xuexiang,QIN Yongyang,SUN Xingping,et al. Analysis of the basic characteristics of surface movement and deformation of the 11-2 fully mechanized coal mining face in Guqiao Coal Mine[J]. Mine Survey,2009(6):8−12.
|
| [11] |
郭玉芳,孟凡迪,陈俊杰. 厚松散层开采条件下地表沉陷数值模拟分析[J]. 煤炭工程,2014,46(6):103−105.
GUO Yufang,MENG Fandi,CHEN Junjie. Numerical simulation analysis of surface subsidence under thick loose layer mining conditions[J]. Coal Engineering,2014,46(6):103−105.
|
| [12] |
李青海,张存智,李开鑫,等. 巨厚松散层下开采地表下沉的影响因素分析[J]. 煤炭科学技术,2021,49(11):191−199.
LI Qinghai,ZHANG Cunzhi,LI Kaixin,et al. Analysis of influencing factors of surface subsidence in mining under huge thick loose layers[J]. Coal Science and Technology,2021,49(11):191−199.
|
| [13] |
杨玉亮,徐祝贺,韩 浩. 浅埋深薄基岩大采高综采工作面开切眼支护技术[J]. 煤炭科学技术,2020,48(12):51−60.
YANG Yuliang,XU Zhuhe,HAN Hao. Shallow burial, deep thin bedrock and large mining height fully mechanized mining face supporting technology[J]. Coal Science and Technology,2020,48(12):51−60.
|
| [14] |
孔素丽,韩永斌. 厚松散层大采深多工作面接续开采地表移动规律研究[J]. 矿山测量,2021,49(5):12−16.
KONG Suli,HAN Yongbin. Research on the law of surface movement in continuous mining of thick loose layers with large mining depth and multiple working faces[J]. Mining Survey,2021,49(5):12−16.
|
| [15] |
蒯 洋,刘 辉,朱晓峻,等. 厚松散层下多煤层重复开采地表移动规律[J]. 煤田地质与勘探,2018,46(2):130−136.
KUAI Yang,LIU Hui,ZHU Xiaojun,et al. Surface movement law of repeated mining of multiple coal seams under thick loose layers[J]. Coalfield Geology and Exploration,2018,46(2):130−136.
|
| [16] |
杨俊哲,吴作启,李宏杰,等. 浅埋薄基岩工作面溃水溃砂模拟试验及影响因素分析[J]. 煤炭科学技术,2021,49(10):1−8.
YANG Junzhe,WU Zuoqi,LI Hongjie,et al. Simulation test of water and sand inrush in shallow-buried thin bedrock working face and analysis of influencing factors[J]. Coal Science and Technology,2021,49(10):1−8.
|
| [17] |
周大伟. 煤矿开采沉陷中岩土体的协同机理及预测[D]. 徐州: 中国矿业大学, 2014.
ZHOU Dawei. Synergistic mechanism and prediction of rock and soil in coal mining subsidence[D]. Xuzhou: China University of Mining and Technology, 2014.
|
| [18] |
顾 伟. 厚松散层下开采覆岩及地表移动规律研究[D]. 徐州: 中国矿业大学, 2014.
GU Wei. Research on overburden rock and surface movement law under thick loose layer mining [D]. Xuzhou: China University of Mining and Technology, 2014.
|
| [19] |
刘 辉,左建宇,苏丽娟,等. 巨厚含水松散层下开采地表移动变形规律研究[J]. 煤炭科学技术,2022,50(5):49−56.
LIU Hui,ZUO Jianyu,SU Lijuan,et al. Research on the law of surface movement and deformation in mining under huge water-bearing loose layers[J]. Coal Science and Technology,2022,50(5):49−56.
|
| [20] |
周婷婷,苏丽娟,刘 辉,等. 神东矿区地表移动参数变化规律及影响机制[J]. 煤田地质与勘探,2021,49(3):189−198.
ZHOU Tingting,SU Lijuan,LIU Hui,et al. Variation law and influence mechanism of surface movement parameters in Shendong mining area[J]. Coalfield Geology and Exploration,2021,49(3):189−198.
|
| [21] |
汪 锋,陈绍杰,许家林,等. 基于松散层拱结构理论的岩层控制研究[J]. 煤炭科学技术,2020,48(9):130−138.
WANG Feng,CHEN Shaojie,XU Jialin,et al. Research on rock formation control based on loose layer arch structure theory[J]. Coal Science and Technology,2020,48(9):130−138.
|
| [22] |
闵飞虎,向必伟,刘 辉,等. 采动影响下逆断层活化规律的数值模拟[J]. 煤田地质与勘探,2019,47(4):144−152.
MIN Feihu,XIANG Biwei,LIU Hui,et al. Numerical simulation of the activation law of reverse faults under the influence of mining[J]. Coalfield Geology and Exploration,2019,47(4):144−152.
|
| [23] |
张玉军,宋业杰,樊振丽,等. 鄂尔多斯盆地侏罗系煤田保水开采技术与应用[J]. 煤炭科学技术,2021,49(4):159−168.
ZHANG Yujun,SONG Yejie,FAN Zhenli,et al. Water conservation mining technology and application of Jurassic coalfield in Ordos Basin[J]. Coal Science and Technology,2021,49(4):159−168.
|
| [24] |
翟新献,刘勤裕,于春生,等. 巨厚松散层薄基岩下煤层开采矿压显现规律研究[J]. 煤炭科技,2022,43(1):1−8.
ZHAI Xinxian,LIU Qinyu,YU Chunsheng,et al. Research on the appearance of mining pressure in coal seams under huge thick loose layers and thin bedrock[J]. Coal Science and Technology,2022,43(1):1−8.
|
| [25] |
吕 超. 赵固一矿厚煤层开采薄基岩变形移动规律研究[D]. 焦作: 河南理工大学, 2018.
LYU Chao. Study on deformation and movement law of thin bedrock in thick coal seam mining in Zhaogu No.1 Mine [D]. Jiaozuo: Henan University of Technology, 2018.
|
| [26] |
陈绍杰,祝伟豪,汪 锋,等. 建筑荷载下浅埋长壁老采空区地表移动变形规律与机理[J]. 煤炭学报,2022,47(12):4403−4416.
CHEN Shaojie,ZHU Weihao,WANG Feng,et al. Law and mechanism of surface movement and deformation in shallow buried longwall old goaf under construction load[J]. Journal of China Coal Society,2022,47(12):4403−4416.
|
| [27] |
李 林. 麻家梁矿区地表变形监测及规律应用研究[D]. 徐州: 中国矿业大学, 2019.
LI Lin. Research on surface deformation monitoring and law application in Majialiang mining area [D]. Xuzhou: China University of Mining and Technology, 2019.
|
| [28] |
易四海,朱 伟,刘德民. 薄基岩厚松散层条件覆岩破坏规律研究[J]. 煤炭工程,2019,51(11):86−91.
YI Sihai,ZHU Wei,LIU Demin. Study on the failure law of overlying rock under the condition of thin bedrock and thick loose layer[J]. Coal Engineering,2019,51(11):86−91.
|
| [29] |
程 桦,张亮亮,姚直书,等. 厚松散层薄基岩非对称开采井筒偏斜机理[J]. 煤炭学报,2022,47(1):102−114.
CHENG Hua,ZHANG Liangliang,YAO Zhishu,et al. Wellbore deflection mechanism in asymmetric mining of thick loose layers and thin bedrock[J]. Journal of China Coal Society,2022,47(1):102−114.
|
| 1. |
胡海洋，阳富芹，陈捷，娄毅，万玉亭. 贵州省盘关向斜煤层气储层地质特征及开发效果评价. 石油实验地质. 2025(01): 213-222 .
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: