[1]余学义,毛旭魏.近距离煤层重复采动对坡体稳定性的影响[J].西安科技大学学报,2019,(01):34-42.[doi:10.13800/j.cnki.xakjdxxb.2019.0106 ]
 YU Xue-yi,MAO Xu-wei.Influence of repeated mining of close distance coal seams on slope stability[J].Journal of Xi'an University of Science and Technology,2019,(01):34-42.[doi:10.13800/j.cnki.xakjdxxb.2019.0106 ]
点击复制

近距离煤层重复采动对坡体稳定性的影响(/HTML)
分享到:

西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2019年01期
页码:
34-42
栏目:
出版日期:
2019-02-28

文章信息/Info

Title:
Influence of repeated mining of close distance coal seams on slope stability
文章编号:
1672-9315(2019)01-0034-09
作者:
余学义12毛旭魏12
(1.西安科技大学 能源学院,陕西 西安 710054; 2.西安科技大学 西部矿井开采与灾害防治教育部重点实验室,陕西 西安 710054)
Author(s):
YU Xue-yi12MAO Xu-wei12
(1.College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Key Laboratory of Western Mine Exploitation and Hazard Prevention,Ministry of Education,Xi'an University of Science and Technology,Xi'an 710054,China)
关键词:
矿业工程 采动坡体 重复采动 数值模拟 覆岩破坏
Keywords:
mining engineering mining-induced slope repeated mining numerical simulation overburden failure
分类号:
TD 325; P 642.22
DOI:
10.13800/j.cnki.xakjdxxb.2019.0106
文献标志码:
A
摘要:
为研究近距离多煤层重复开采对坡体稳定性的影响,以岔角滩煤矿二采区为研究背景,选取具有明显特征的V号坡体为研究对象,建立力学模型,在天然坡体稳定系数计算公式的基础上,修正给出了采动坡体的稳定系数计算公式。此外,结合数值模拟方法计算分析C19,C20煤层依次开采和一次性开采等厚煤层情况下对地表坡体稳定性的影响。结果表明,天然状态下处于稳定的地表坡体在受到C19,C20两层煤依次采动后,坡体稳定性系数分别为1.03和0.80.模拟开采等厚煤层结束后,覆岩破坏发育高度约为120 m,地表浅处松散层发生局部破坏; 在C19煤层回采结束后,覆岩塑性破坏区发育高度约为80 m,未波及地表,坡体仍处于稳定状态; 在C20煤层回采结束后,覆岩塑性破坏区发育高度为150 m,地表松散层和基岩风化带整体破坏,坡体稳定性差。当开采单一煤层时,覆岩裂缝发育最大高度为35~40倍采高,对坡体的影响相对较小。近距离两层煤依次开采后,加剧了覆岩破坏,使得坡体失稳。
Abstract:
In order to research the influence ofrepeated mining ofclose distance coal seams on slope stability,the No.2 mining area in Chajiaotan Coal Mine was taken as the research background,and the V slope with obvious characteristics was selected as the research object.The mechanical model was established,and based on the formula for calculating the stability coefficient of natural slope,the formula for calculating the stability coefficient of mining slope was revised.In addition,combined with numerical simulation method,we calculated and analyzed the influence on the stability of the surface slope after C19 and C20 coal seam mining in sequence and one-time mining of equal thick coal seam.The results showed that the slope is stable under natural condition,but after mining of C19 and C20 coal seams,the stability coefficients of steady slope which is in the nature state are 1.03 and 0.80,respectively.The development height of overlying strata plastic failure zone is 120 m after mining of the equal thick coal seam,andlocal damage ofthe loose layer at the shallow of the surface occurs.When the development height of overlying strata plastic failure zone is 80 m after mining of C19 coal seam,it doesn't spread to the earth's surface,and the slope is still in the steady state.When the development height of overlying strata plastic failure zone is 150 m after mining of C20 coal seam,the unconsolidated formation and bed rock weathering zone are generally damaged,and the slope is in poor stability.When a single seam is mined,the maximum height of fracture development is 35~40 times of mining height,and the influence on the slope is relatively small.When the close two layers of coal are mined in turn,the overburden failure is aggravated,resulting in instability of the slope.

参考文献/References:


[1] 余学义,张恩强.开采损害学[M].北京:煤炭工业出版社.2010. YU Xue-yi,ZHANG En-qiang.Ming damage[M].Beijing:China Coal Industry Publishing House,2010.
[2]汤伏全.采动滑坡的机理分析[J].西安矿业学院学报,1989,9(3):32-36. TANG Fu-quan.Mechanism analysis of landslide by mining[J].Journal of Xi'an Mining Institute,1989,9(3):32-36.
[3]郑志刚.重复采动条件下地表移动变形规律实测研究[J].煤矿开采,2014,19(2):88-90. ZHEN Zhi-gang.Research on ground subsidence rules of full-mechanized caving mining under thin bedrock and thick loose[J].Coal Technology,2014,19(2):132-134.
[4]邸建友.重复采动对地表移动变形的影响[J].矿山压力与顶板管理,2000,17(4):74-75. DI Jian-you.Effect of repeated mining on surface movement and deformation[J].Ground Pressure and Strata Control,2000,17(4):74-75.
[5]Woodward P K.Stability of slopes with berms on rigid foundations[J].Geotechnical and Geological Engineering,1999,16(4):309-320.
[6]Sagaseta C,Sanchez J M,Canizal J.A general analytical solution for the required anchor force in rock slope with toppling failure[J].International Journal of Rock Mechanics & Mining Sciences.2001,38(3):421-435.
[7]Dai F C,Lee C F.Frequency-volume relation and prediction of rainfall-reduced landslides[J].Engineering Geology,2001,59(3):253-266.
[8]Jones D B,Reddish D J,Siddle H J,et al.Landslides and undermining:Slope stability interaction with mining subsidence behaviour[C]//7th ISRM Congress,Aachen,Germany:International Society for Rock Mechanics and Rock Engineering,1991.
[9]Boris Benko.Numberial modelling of complex slope deformations[M].University of Saskatchewan:The Doctor Degree Dissertation of Department of Geological Science,1997.
[10]王悦汉,邓喀中,张冬至,等.重复采动条件下覆岩下沉特性的研究[J].煤炭学报,1998,23(5):470-475. WANG Yue-han,DENG Ka-zhong,ZHANG Dong-zhi,et al.The study on the character of strata subsidence during repeat mining[J].Journal of China Coal Society,1998,23(5):470-475.
[11]李腾飞,李 晓,苑伟娜,等.地下采矿诱发山体崩滑地质灾害研究现状与展望[J].工程地质学报,2011,19(6):831-837. LI Teng-fei,LI Xiao,YUAN Wei-na,et al.Current status and prospects of studies on mechanism of landslide geohazards induced by underground mining[J].Journal of Engineering Geology,2011,19(6):831-833.
[12]李腾飞,李 晓,李守定,等.地下采掘诱发斜坡失稳破坏机制研究——以武隆鸡尾山崩滑为例[J].岩石力学与工程学报,2012,31(增2):3803-3810. LI Teng-fei,LI Xiao,LI Shou-ding,et al.Mechanism of slope failure induced by undermining:a case study of Jiweishan rockslide in Wulong[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(Supply 2):3803-3810.
[13]刘书贤,魏晓刚,张 弛,等.煤矿多煤层重复采动所致地表移动与建筑损坏分析[J].中国安全科学学报,2014,24(3):59-63. LIU Shu-xian,WEI Xiao-gang,ZHANG Chi,et al.Analysis of construction damage and surface movement caused by repeat multiple seam mining of coal mine[J].China Safety Science Journal,2014,24(3):59-65.
[14]李 飞,王金安,李鹏飞,等.山区下开采覆岩移动规律及破断机制研究[J].岩土力学,2016,37(4):1089-1095. LI Fei,WANG Jin-an,LI Peng-fei,et al.Research on movement behavior and failure mechanism of overlying strata caused by mining at mountainous field[J].Rock and Soil Mechanics,2016,37(4):1089-1095.
[15]Yin Y P,Sun P,Zhang M,et al.Mechanism on apparent dip sliding of oblique inclined bedding rockslide at Jiweishan,Chongqing,China[J].Landslides,2011,8(1):49-65.
[16]Yin Y P.Recent catastrophic landslides and mitigation in China[J].Journal of Rock Mechanics and Geotechnical Engineering,2011,3(1):10-18.
[17]刘栋林,朱卫兵,王路军,等.煤层群重复采动对坡体稳定影响的物理模拟研究[J].中国煤炭,2012,38(1):64-67. LIU Dong-lin,ZHU Wei-bing,WANG Lu-jun,et al.Physical simulation study on slope stability in repeated coal seams mining[J].China Coal,2012,38(1):64-67.
[18]李凤鸣,谭勇强.采矿活动引发的滑坡及工程治理实践[J].煤矿开采,2002,7(2):1-6. LI Feng-ming,TAN Yong-qiang.Slope slide due to mining activity and its control engineering[J].Coal Mining Technology,2002,7(2):1-6.
[19]朱大勇,钱七虎.三维边坡严格与准严格极限平衡解答及工程应用[J].岩石力学与工程学报,2007,26(8):1513-1528. ZHU Da-yong,QIAN Qi-hu.Rigorous and quasi-rigorous limit equilibrium solutions of 3D slope stability and application to engineering[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(8):1513-1528.
[20]郑颖人,赵尚毅.有限元强度折减法在土坡与岩坡中的应用[J].岩石力学与工程学报,2004,23(19):3381-3388. ZHENG Ying-ren,ZHAO Shang-yi.Application of strength reduction FEM in soil and rock slope[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(19):3381-3388.
[21]徐廷甫,尹志明,邓月华.地下采动条件下顺层岩质边坡稳定性分析[J].地下空间与工程学报,2011,7(6):1241-1245. XU Ting-fu,YIN Zhi-ming,DENG Yue-hua.Stability analysis of bedding rock slope at underground mining conditions[J].Chinese Journal of Underground Space and Engineering,2011,7(6):1241-1245.
[22]黄庆享.浅埋煤层保水开采岩层控制研究[J].煤炭学报,2017,42(1):50-55. HUANG Qing-xiang.Research on roof control of water conservation mining in shallow seam[J].Journal of China Coal Society,2017,42(1):50-55.
[23]黄庆享,张文忠.浅埋煤层条带充填隔水岩组力学模型分析[J].煤炭学报,2015,40(5):973-978. HUANG Qing-xiang,ZHANG Wen-zhong.Mechanical model of water resisting strata group in shallow seam strip-filling mining[J].Journal of China Coal Society,2015,40(5):973-978.
[24]白燕杰.极近距离煤层群采区巷道布置优化及开采顺序研究[D].重庆:重庆大学,2011. BAI Yan-jie.Research on the extremely close coal seam group on mining roadway optimization arrangement and mining sequence[D].Chongqing:Chongqing University,2011.
[25]邹德均,李 敏,宫良伟,等.近距离“三软”薄煤群各煤层巷道围岩控制研究[J].煤炭技术,2015,34(7):35-38. ZOU De-jun,LI Min,GONG Liang-wei,et al.Research on surrounding rock control of each roadway in thin coal seam group with close distance and “Three Soft”[J].Coal Technology,2015,34(7):35-38.

相似文献/References:

[1]张 杰,杨 涛,索永录,等.基于耦合评价的安山煤矿顶板突水预测模型研究[J].西安科技大学学报,2018,(04):569.[doi:10.13800/j.cnki.xakjdxxb.2018.0408 ]
 ZHANG Jie,YANG Tao,SUO Yong-lu,et al.Forecast model for roof water inrush in Anshan coal mine based on coupling evaluation[J].Journal of Xi'an University of Science and Technology,2018,(01):569.[doi:10.13800/j.cnki.xakjdxxb.2018.0408 ]
[2]李谦益.改进可拓层次法在煤层顶板稳定性评价中的应用[J].西安科技大学学报,2018,(04):643.[doi:10.13800/j.cnki.xakjdxxb.2018.0418 ]
 LI Qian-yi.Application of EAHP in stability evaluation of coal seam roof[J].Journal of Xi'an University of Science and Technology,2018,(01):643.[doi:10.13800/j.cnki.xakjdxxb.2018.0418 ]
[3]郭爱华.煤层气井潜在酸联合加砂压裂增产机理及应用[J].西安科技大学学报,2018,(04):650.[doi:10.13800/j.cnki.xakjdxxb.2018.0419 ]
 GUO Ai-hua.Mechanism and application of potential acid combined sand and fracturing in CBM wells[J].Journal of Xi'an University of Science and Technology,2018,(01):650.[doi:10.13800/j.cnki.xakjdxxb.2018.0419 ]
[4]王亚超,袁 泉,肖 旸,等.水分对白皎无烟煤氧化过程放热特性的影响[J].西安科技大学学报,2018,(05):721.[doi:10.13800/j.cnki.xakjdxxb.2018.0505]
 WANG Ya-chao,YUAN Quan,XIAO Yang,et al.Effect of moisture on exothermic characteristics of oxidation process of Baijiao anthracite[J].Journal of Xi'an University of Science and Technology,2018,(01):721.[doi:10.13800/j.cnki.xakjdxxb.2018.0505]
[5]柴 敬,杜文刚,袁 强,等.物理模型试验光纤传感技术测试方法分析[J].西安科技大学学报,2018,(05):728.[doi:10.13800/j.cnki.xakjdxxb.2018.0506]
 CHAI Jing,DU Wen-gang,YUAN Qiang,et al.Analysis of test method for physical model test based on optical fiber sensing technology detection[J].Journal of Xi'an University of Science and Technology,2018,(01):728.[doi:10.13800/j.cnki.xakjdxxb.2018.0506]
[6]刘志军,杨 栋,胡耀青,等.油页岩原位热解孔隙结构演化的低温氮吸附分析[J].西安科技大学学报,2018,(05):737.[doi:10.13800/j.cnki.xakjdxxb.2018.0507]
 LIU Zhi-jun,YANG Dong,HU Yao-qing,et al.Low temperature nitrogen adsorption analysis of pore structure evolution in in-situ pyrolysis of oil shale[J].Journal of Xi'an University of Science and Technology,2018,(01):737.[doi:10.13800/j.cnki.xakjdxxb.2018.0507]
[7]郭 军,刘 荫,金永飞,等.矿井胶带火灾巷道环境多参数时空演化规律[J].西安科技大学学报,2019,(01):21.[doi:10.13800/j.cnki.xakjdxxb.2019.0104 ]
 GUO Jun,LIU Yin,JIN Yong-fei,et al.Spatiotemporal evolution law of multiple parameters of roadway environment for rubber-belt fire in mine[J].Journal of Xi'an University of Science and Technology,2019,(01):21.[doi:10.13800/j.cnki.xakjdxxb.2019.0104 ]
[8]于 伟,李 振,刘莉君,等.煤泥浮选复合药剂开发及分选提质[J].西安科技大学学报,2019,(01):138.[doi:10.13800/j.cnki.xakjdxxb.2019.0120 ]
 YU Wei,LI Zhen,LIU Li-jun,et al.Development of compound reagent for coal slime flotation[J].Journal of Xi'an University of Science and Technology,2019,(01):138.[doi:10.13800/j.cnki.xakjdxxb.2019.0120 ]
[9]邓广哲,郑 锐,徐 东.大采高综采端头悬顶水力切顶控制机理[J].西安科技大学学报,2019,(02):224.[doi:10.13800/j.cnki.xakjdxxb.2019.0207 ]
 DENG Guang-zhe,ZHENG Rui,XU Dong.Control mechanism of hydraulic roof cutting for end suspended roof of fully-mechanized mining face with large mining height[J].Journal of Xi'an University of Science and Technology,2019,(01):224.[doi:10.13800/j.cnki.xakjdxxb.2019.0207 ]
[10]吴奉亮,李智胜,常心坦.矿井采空区漏风问题的迎风有限元求解技术及其应用[J].西安科技大学学报,2019,(02):234.[doi:10.13800/j.cnki.xakjdxxb.2019.0208 ]
 WU Feng-liang,LI Zhi-sheng,CHANG Xin-tan.Technology for problems caused by gob air leakage in coal mine based on upwind finite element method and its application[J].Journal of Xi'an University of Science and Technology,2019,(01):234.[doi:10.13800/j.cnki.xakjdxxb.2019.0208 ]

备注/Memo

备注/Memo:
收稿日期:2018-06-10 责任编辑:杨泉林
基金项目:国家自然科学基金(51874230)
通信作者:余学义(1955-),男,陕西定边人,教授,博士生导师,E-mail:yuxy@xust.edu.cn
更新日期/Last Update: 2019-02-28