| Citation: |
LI Yanhe，NI Xiaoming，WANG Baoyu，et al. Breakage characteristics of casing and prevention and control measures in mining wells based on the evolution law of stress and crack fields in overlying strata[J]. Coal Science and Technology，2024，52（1）：221−231. DOI: 10.12438/cst.2023-1571
|
Accurately determining the casing breakage characteristics in mining wells and proposing corresponding preventive and control measures can provide an important guarantee for the long-term stability of the wellbore. Taking the No. 21 coal seam and overlying strata in the Pingdingshan mining area as the research object, theoretical calculations and numerical simulation were used to determine the stress and displacement distribution law of separation section in the overlying strata. The correlation between the height of the overlying strata, the horizontal distance from the working face and stress and displacement were analyzed, and the relationship between the height of the overlying strata, the horizontal distance from the working face and the stress and displacement were fitted. Based on the actual development experience of mining wells in the research area, the main types of casing breakage in the optimal well layout area were determined. Combined with the commonly used casing mechanical parameters, the casing breakage location and length under the “two field” evolution were characterized. The commonly used local protection technologies for mining wells was summarized and the corresponding preventive and control measures were proposed. The results shown that, in the process of working face advancement, the stress of the overlying strata shown a change pattern of from fluctuation to linear decrease, and the displacement shown a change pattern of from almost unchanged to hyperbolic type. The casing in the optimal well layout area was mainly characterized by tensile shrinkage and shear fracture, and the casing reinforcement was applied to reinforce the casing in mining well. When N80 casing was used in the third section of the ground mining well in the research area, it was necessary to install anti- tensile and shear casing reinforcement in the upper 46 m of the coal seam at the sub-critical layer and in the upper 54 m of the coal seam at the soft/hard interlayer. When P110 casing was used, it is necessary to install anti-tensile reinforcement in the upper 46 m of the coal seam at the sub-critical layer. It is recommended to use P110 casing for all three sections of the surface mining wells in the research area to increase the wellbore stability in mining well. The research achievement can provide theoretical guidance for preventing casing breakage in the Pingdingshan mine and mining wells under similar conditions.
| [1] |
郝登云,崔千里,何 杰,等. 锚杆锚索支护巷道层状顶板变形特征及离层监测研究[J]. 煤炭学报,2017,42(S1):43−50.
HAO Dengyun,CUI Qianli,HE Jie, et al. Deformation characteristics and separation monitoring of layered roof roadway supported with bolts and cables[J]. Journal of China Coal Society,2017,42(S1):43−50.
|
| [2] |
程敬义,万志军,PENG Syd S,等. 基于海量矿压监测数据的采场支架与顶板状态智能感知技术[J]. 煤炭学报,2020,45(6):2090−2103.
CHENG Jingyi,WAN Zhijun,PENG Syd S,et al. Technology of intelligent sensing of longwall shield supports status and roof strata based on massive shield pressure monitoring data[J]. Journal of China Coal Society,2020,45(6):2090−2103.
|
| [3] |
谢正正,张 农,王 朋,等. 长期载荷作用下柔性锚杆力学特性及工程应用[J]. 煤炭学报,2020,45(9):3096−3106.
XIE Zhengzheng,ZHANG Nong,WANG Peng,et al. Mechanical characteristics and field application of flexible bolt under long-term load[J]. Journal of China Coal Society,2020,45(9):3096−3106.
|
| [4] |
王宴滨,曾 静,高德利. 环空带压对深水水下井口疲劳损伤的影响规律[J]. 天然气工业,2020,40(12):116−123.
WANG Yanbin,ZENG Jing,GAO Deli. Effect of annular pressure on the fatigue damage of deepwater subsea wellheads[J]. Natural Gas Industry,2020,40(12):116−123.
|
| [5] |
王黎松,高宝奎,胡天祥,等. 考虑材料非线性的环空增压预测模型[J]. 石油学报,2020,41(2):235−243.
WANG Lisong,GAO Baokui,HU Tianxiang,et al. A prediction model of annular pressure build-up considering material nonlinearity[J]. Acta Petrolei Sinica,2020,41(2):235−243.
|
| [6] |
王海柱,石鲁杰,郑 永,等. 基于组合体力学模型的固井水泥石封隔能力分析[J]. 东北大学学报(自然科学版),2020,41(9):1334−1340.
WANG Haizhu,SHI Lujie,ZHENG Yong,et al. Sealing capacity analysis of cement sheath based on combined mechanical model[J]. Journal of Northeastern University(Natural Science),2020,41(9):1334−1340.
|
| [7] |
刘 强,申照熙,李东风,等. 钛合金油套管抗挤毁性能计算与实验[J]. 天然气工业,2020,40(10):94−101.
LIU Qiang,SHEN Zhaoxi,LI Dongfeng,et al. Calculation and experimental studies on the collapse strength of titanium alloy tubing and casing[J]. Natural Gas Industry,2020,40(10):94−101.
|
| [8] |
樊金杰,郭锦棠,肖明明,等. 核壳型丁苯胶乳的制备及其对油井水泥石性能的影响[J]. 化工进展,2018,37(12):4845−4852.
FAN Jinjie,GUO Jintang,XIAO Mingming,et al. Preparation of styrene-butadiene latex with core-shell structure and effect on oil well cement[J]. Chemical Industry and Engineering Progress,2018,37(12):4845−4852.
|
| [9] |
郭辛阳,宋雨媛,步玉环,等. 基于损伤力学变内压条件下水泥环密封完整性模拟[J]. 石油学报,2020,41(11):1425−1433.
GUO Xinyang,SONG Yuyuan,BU Yuhuan,et al. Simulation of seal integrity of cement sheath under variable internal casing pressure based on damage mechanics[J]. Acta Petrolei Sinica,2020,41(11):1425−1433.
|
| [10] |
孙海涛,郑颖人,胡千庭,等. 地面钻井套管耦合变形作用机理[J]. 煤炭学报,2011,36(5):823−829.
SUN Haitao,ZHENG Yingren,HU Qianting,et al. Surface borehole casing coupling deformation mechanism[J]. Journal of China Coal Society,2011,36(5):823−829.
|
| [11] |
于秋鸽, 张华兴, 邓伟男, 等. 采动影响下断层面离层空间产生及其对开采空间传递作用分析[J]. 煤炭学报, 2018, 43（12）: 3286−3292.
YU Qiuge, ZHANG Huaxing, DENG Weinan, et al. Analysis of fault separation generation and its increasing effect on mining zone.[J]. Journal of China Coal Society, 2018, 43（12）: 3286−3292.
|
| [12] |
杨 鹏,杨伟峰,张鑫全,等. 基于信息熵的采动覆岩应力动态演化与水害辨识[J]. 煤炭学报,2021,46(9):3006−3014.
YANG Peng,YANG Weifeng,ZHANG Xinquan,et al. Dynamic evolution of overlying strata stress induced by mining and mine water disaster identification based on information entropy[J]. Journal of China Coal Society,2021,46(9):3006−3014.
|
| [13] |
柴 敬,杨玉玉,欧阳一博,等. 采场覆岩变形破坏模拟试验的光测方法对比[J]. 煤炭学报,2021,46(1):154−163.
CHAI Jing,YANG Yuyu,OUYANG Yibo,et al. Comparison of optical measurement methods for deformation and failure simulation test of overburden in working face[J]. Journal of China Coal Society,2021,46(1):154−163.
|
| [14] |
许家林,秦 伟,轩大洋,等. 采动覆岩卸荷膨胀累积效应[J]. 煤炭学报,2020,45(1):35−43.
XU Jialin,QIN Wei,XUAN Dayang,et al. Accumulative effect of overburden strata expansion induced by stress relief[J]. Journal of China Coal Society,2020,45(1):35−43.
|
| [15] |
梁 涛, 刘晓丽, 王思敬. 采动裂隙扩展规律及渗透特性分形研究[J]. 煤炭学报, 2019, 44（12）: 3729−3739.
LIANG Tao, LIU Xiaoli, WANG Sijing. Fractal study on the crack network evolution and permeability change in mining rock mass.[J]. Journal of China Coal Society, 2019, 44（12）: 3729−3739.
|
| [16] |
张 鑫,乔 伟,雷利剑,等. 综放开采覆岩离层形成机理[J]. 煤炭学报,2016,41(S2):342−349.
ZHANG Xin,QIAO Wei,LEI Lijian,et al. Formation mechanism of overburden bed separation in fully mechanized top-coal caving[J]. Journal of China Coal Society,2016,41(S2):342−349.
|
| [17] |
牛宏伟,高 峰,韩进利,等. 巨厚砂岩下厚煤层采动覆岩离层形成机理与探测[J]. 煤矿安全,2020,51(11):150−154.
NIU Hongwei,GAO Feng,HAN Jinli,et al. Formation mechanism and detection method of overburden abscission layer in mining coal seam under thick sandstone[J]. Safety in Coal Mines,2020,51(11):150−154.
|
| [18] |
林海飞, 李树刚, 成连华, 等. 基于薄板理论的采场覆岩关键层的判别方法[J]. 煤炭学报, 2008, 33（10）: 1081−1085.
LIN Haifei, LI Shugang, CHENG Lianhua, et al. Key layer distinguishing method of overlying strata based on the thin slab theory.[J]. Journal of China Coal Society, 2008, 33(10): 1081−1085.
|
| [19] |
赵雁海,周晨华,张 新,等. 浅埋单一关键层断裂覆岩压力成拱效应及分布特征[J]. 煤炭学报,2020,45(S1):1−11.
ZHAO Yanhai,ZHOU Chenhua,ZHANG Xin,et al. The pressure arching effect and distribution characteristics of fractured strata of single key layer under shallow buried condition[J]. Journal of China Coal Society,2020,45(S1):1−11.
|
| [20] |
杨兆彪,王家琛,杨彦群,等. 废弃工作面遗留煤层气扰动储层空间划分:以屯兰煤矿12501工作面为例[J]. 煤炭科学技术,2023,51(2):243−255.
YANG Zhaobiao,WANG Jiachen,YANG Yanqun,et al. Spatial division of abandoned mine methane reservoir:taking 12501 working face of Tunlan Coal Mine as an example[J]. Coal Science and Technology,2023,51(2):243−255.
|
| [21] |
郑俊德,张艳秋,王文军,等. 非均匀载荷下套管强度的计算[J]. 石油学报,1998,19(1):129−133,10.
ZHENG Junde,ZHANG Yanqiu,WANG Wenjun,et al. Calculation of casing strength under non-uniform load[J]. Acta Petrollei Sinica,1998,19(1):129−133,10.
|
| [22] |
林元华,邓宽海,曾德智,等. 套管在单轴压缩载荷下的失效规律[J]. 天然气工业,2016,36(1):99−105.
LIN Yuanhua,DENG Kuanhai,ZENG Dezhi,et al. Casing failure laws under uniaxial compressive load[J]. Natural Gas Industry,2016,36(1):99−105.
|
| [23] |
孙东玲,付军辉,孙海涛,等. 采动区瓦斯地面井破断防护研究及应用[J]. 煤炭科学技术,2018,46(6):17−23.
SUN Dongling,FU Junhui,SUN Haitao,et al. Study and application of gas surface well broken protection in mining area[J]. Coal Science and Technology,2018,46(6):17−23.
|
| [1] | YANG Ke, LIU Wenjie, LI Zhihua, LIU Qinjie, CHI Xiaolou, WEI Zhen. Catastrophe mechanism and prevention and control technology on soft coal mining with large inclination angle under thick and hard roof[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(2): 12-20. DOI: 10.13199/j.cnki.cst.2021.02.002 |
| [2] | XU Gang, HUANG Zhizeng, FAN Zhizhong, LU Zhenlong, ZHANG Zhen, XUE Jisheng, WANG Chuanpeng, WANG Yuanjie, CHEN Fabing, LI Yan, LIU Qianjin, LI Zhengjie, SU Bo, LI Chunrui, ZHANG Chunhui. Types, monitoring and prevention technology system of roof disasters in mining face in China[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(2): 1-11. DOI: 10.13199/j.cnki.cst.2021.02.001 |
| [3] | QIN Botao, ZHONG Xiaoxing, WANG Deming, XIN Haihui, SHI Quanlin. Research progress of coal spontaneous combustion process characteristics and prevention technology[J]. COAL SCIENCE AND TECHNOLOGY, 2021, 49(1): 66-99. DOI: 10.13199/j.cnki.cst.2021.01.005 |
| [4] | FAN Zhizhong, PAN Liming, XU Gang, YIN Xiwen. Early warning technology of surrounding rock in high-intensity mining of intelligent ultra-long working face[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (10). |
| [5] | WANG Jianda, QIN Kai, DENG Zhigang, ZHAO Shankun, AN Sai, OUYANG Zhenhua. Study on early warning technology of rock burst basedon mining stress monitoring by fiber-grating[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (6). |
| [6] | DOU Linming, BAI Jinzheng, LI Xuwei, HE Hu. Study on prevention and control technology of rockburst disaster based on theory of dynamic and static combined load[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (10). |
| [7] | Dou Linming Li Zhenlei Zhang Min, . Study on monitoring and early warning technology of mine pressure bump disaster[J]. COAL SCIENCE AND TECHNOLOGY, 2016, (7). |
| [8] | YU Zheng-xing JIANG Fu-xing LI Feng ZHU Quan-jie WEI Quan-de, . Initiative prevention and control technology of mine pressure bump under complicated condition of deep mine[J]. COAL SCIENCE AND TECHNOLOGY, 2015, (3). |
| [9] | MAO De-bing YIN Xi-wen ZHANG Hui-jun, . Technology of Prevention Roof Disasters and Monitoring and Controlling in China Coal Mines[J]. COAL SCIENCE AND TECHNOLOGY, 2013, (9). |
| [10] | Real Time Monitoring and Measuring Early Warning Technology and Development of Mine Pressure Bumping[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (2). |
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: