Temporal and spatial characteristics of landslide susceptibility in the West open-pit mining area, Fushun, China
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摘要: 近年抚顺西露天矿矿区滑坡在规模、活动频率以及空间发育位置等方面均与矿区历史滑坡呈现出较明显的时空差异性，为矿区未来治理提出新的挑战。故基于改进频率比模型，选择人类工程活动（主要是采矿工程扰动）和工程地质条件两类致灾因素，对由矿区滑坡时空差异所导致的易发性变化进行研究。结果表明：影响矿区滑坡灾害的主要因素包括坡体结构、工程岩组和水文地质条件；矿区滑坡易发性较2010年前有所降低，高易发区和较高易发区面积共减少1.294 km2，但北帮中区等地段仍呈高易发态势；滑坡易发区的空间位置与2010年前后对比发生了较大变化，矿坑西北帮滑坡易发性大幅降低，东部环矿区境界50~500 m处滑坡易发性轻微降低，北帮中段与南帮中、西段顶部滑坡易发性增加，其中北帮中段为目前最易发的区段。研究结果可为矿区闭坑停采后边坡整治及后续规划利用提供参考依据。Abstract: In recent years landslides occurred in the Fushun West open-pit mining area compared with previous ones show obvious temporal and spatial variations in the scale, activity frequency and spatial position, followed up by changes in landslide susceptibility, which presents new challenges for future treatment. We compared susceptibility changes caused by the temporal and spatial differences using the Improved Frequency Ratio model on the selected two types of hazard-triggering factors, including human engineering activities (mainly mining engineering disturbances) and engineering geological conditions. And the results pointed to slope structure, engineering rock group and hydrogeological conditions as the influencing factors. Compared with how it was in 2010, current landslide susceptibility has decreased, and the extremely high-high prone areas have decreased by 1.294 km2 in size; however, there is still a high incidence trend in the middle area of the north side. And the spatial location of the currently high landslide-prone areas has undergone major changes. The landslide susceptibility in the northwest side of the mine shows a sharp decline, and it has also reduced slightly at 50~500 m away from the eastern boundary of the mining area, while it has increased in the middle section of the north slope, and the top of the middle and west section of the south slope. Especially, the middle section of the north slope is the most landslide-prone area. The research results provide reference basis for slope treatment and follow-up planning after mining closure.
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图 1 西露天矿区孕灾地质背景
Figure 1. Disaster-bearing geological background of the West open-pit mining area. (a) Structural distribution. (b) Geological conditions.
图 2 矿区滑坡分布变化
Figure 2. Distribution changes of landslides in the mining area. (a) Changes of pit topography and spatial distribution of landslides. (b) Diagram showing landslides occurred over time in the mining district.
图 3 矿区滑坡易发性评价因子
F1、F1A—浑河断裂主断层；F1-1—浑河断裂一号分支断层；F1-2—浑河断裂二号分支断层；F1-3—浑河断裂三号分支断层
Figure 3. Factors in landslide susceptibility evaluation in the influence zone of open pit mining in the mining area. (a) Topography. (b) Structure-influenced zone. (c) Slope structure (modified after Shen et al., 1999; Li et al., 2010; Cui, 2018; Gao et al., 2020). (d) Underground water depth. (e) Engineering rock group. (f) Open-pit mining influenced zone. (g) Underground mining influenced zone.
F1, F1A-Main fault of the Hunhe Fault; F1-1-No.1 brunch fault of the Hunhe Fault; F1-2-No.2 brunch fault of the Hunhe Fault; F1-3-No.3 brunch fault of the Hunhe Fault.
图 4 矿区滑坡易发性变化对比
Figure 4. Changes of landslide susceptibility in the mining area. (a) Landslide susceptibility zoning prior to 2010. (b) Landslide susceptibility zoning after 2010. (c) Change of landslide susceptibility. (d) Numerical model. (e) Contour map of deformation rate under natural conditions. (f) Contour map of displacement in the north side under natural conditions.
表 1 坡形划分依据
Table 1. Basis for slope shape classification
坡形 坡度/(°) 坡高/m 坡形值范围 低缓坡 0~15 0~30 0~8.038 过渡坡 15~25 30~100 8.038~46.63 高陡坡 >25 >100 >46.63 
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表 2 矿坑及邻区岩体强度
Table 2. Rock mass strength of the mine pit and adjacent area
岩性 弹性模量/GPa 泊松比 内摩擦角/(°) 粘聚力/MPa 砂砾岩 5.5 0.25 32 2.5 泥页岩 1.2 0.28 28 0.3 油母页岩 1.2 0.28 35 0.95 煤 1.2 0.28 33 1.0 凝灰岩 10.5 0.25 39 2.5 玄武岩 25 0.23 48 4.0 花岗片麻岩 35 0.22 52 6.0
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表 3 不同期次致灾因子各类别的改进频率比
Table 3. Improved Frequency Ratio of disaster-triggering factors in different periods
致灾因子 2010年前频率比 排序 2010年后频率比 排序 地形地貌 高陡坡 1.038 8 0.986 9 低陡/高缓坡 0.242 20 0.745 12 低缓坡 2.029 5 0.533 19 地质构造 距构造 < 50 m 0.691 12 1.052 8 距构造50~100 m 0.724 11 0.572 17 距构造100~200 m 0.451 16 0.614 16 坡体结构 平地 0 24 0 24 顺向坡 4.079 2 7.442 1 斜切坡 0 24 0 24 反向坡 0.003 23 0.022 22 复褶皱坡 0.926 9 6.748 2 主向斜坡 5.657 1 0.007 23 工程岩组 软岩组 0.547 15 1.297 5 较硬岩组 0.874 10 0.735 13 硬岩组 0.550 13 2.607 3 水文地质 地下水溢出 2.176 4 1.151 7 地下水埋深0~15 m 1.566 6 0.647 15 地下水埋深15~45 m 0.550 14 0.508 20 地下水埋深 > 45 m 0.030 21 1.281 6 井工开采 距采空区 < 50 m 0.244 19 0.369 21 距采空区50~100 m 0.449 17 0.961 10 距采空区100~200 m 0.437 18 1.395 4 露天开采 距矿坑边界 < 50 m 0.004 22 0.901 11 距矿坑边界50~200 m 1.378 7 0.651 14 距矿坑边界200~500 m 2.818 3 0.568 18
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表 4 2010年前后矿区滑坡易发性对比
Table 4. Comparison of landslide susceptibility in the mining area around 2010
区段 2010年前 2010年后 面积/km2 占比/% 面积/km2 占比/% 高易发 3.664 34.25 2.768 25.87 矿区西北帮全区及南帮中部 矿区北帮中段上部及南帮中西部上段 较高易发 4.042 37.78 3.644 34.06 东帮中段，矿坑南帮顶底部及北帮中、东段中部 矿区中段及南帮东段 较低易发 1.783 16.66 0.124 1.16 北帮中东段较高易发区周围及矿坑西端工业用地 矿区东段坑底运输区及东端零星分布 低易发 1.211 11.32 4.164 38.91 矿区东段及矿坑底部东运输段 矿区北帮东西段及东西帮端
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CHEN Z J, 1989. Stability of North Slope in Fushun West open pit mine and related problems[C]//Proceedings of the second national symposium on rock mechanics and engineering. Guangzhou: Chinese Society of Rock Mechanics and Engineering: 1-16. (in Chinese) CUI Y, 2018. Analysis on geological characteristics and mechanism of landslide in south slope of West Open-pit Mine in Fushun[D]. Changchun: Jilin University. (in Chinese with English abstract) DENG Y, HAO Z, XU C D, et al., 2021. Prediction of groundwater resources adjustment after closure of large open pit mine[J]. Coal Engineering, 53(2): 132-136. (in Chinese with English abstract) FU B J, 1990. A brief review on the engineering geological condition of the Fushun petroleum refinery No. 1 and Fushun West open-pit coal mine[J]. Chinese Journal of Rock Mechanics and Engireering (4): 266-270. (in Chinese with English abstract) http://en.cnki.com.cn/Article_en/CJFDTOTAL-YSLX199004003.htm GAO A Q, WANG J A, LI F, et al., 2021. The locational characteristics of buildings damage around the West Open-pit Mine[J/OL]. Journal of China Coal Society: 1-11[05-16]. https://doi.org/10.13225/j.cnki.jccs.2019.1628. (in Chinese with English abstract) HAO Z, CHEN H D, XU C D, et al., 2020. Investigation and evaluation of water environment in Fushun West Open-pit Mine and its surroundings[J]. Opencast Mining Technology, 35(3): 15-18. (in Chinese with English abstract) HE M C, HUO Q Y, 1986. Sarma method and its application to geology[J]. Journal of Changchun Institute of Geology (1): 65-72. (in Chinese with English abstract) JI Y S, SUN H R, LIU J H, 2006. Environmental geological disasters dangers study by zones after the ending of mining in open-pit coal mine[J]. Journal of China Coal Society, 31(3): 305-309. (in Chinese with English abstract) http://en.cnki.com.cn/Article_en/CJFDTOTAL-MTXB200603007.htm LI A H, ZHANG D Q, LIANG H Q, 2010. Analysis of stability of some eastern slope of Fushun east open-pit[J]. Opencast Mining Technology (1): 21-23. (in Chinese with English abstract) LI H M, 2019. Application of 3S technology in landslide monitoring of Fushun West open-pit mine[D]. Changchun: Jilin University. (in Chinese with English abstract) LI S Y, 2008. The research of mining environmental geology disaster's forming mechanism and countermeasures of Fushun city[D]. Beijing: China Coal Research Institute. (in Chinese with English abstract) LIU D Y, 2009. Study on formation mechanism-prediction analysis of geologic hazards in Fushun coalfield[D]. Northeastern University. (in Chinese with English abstract) LIU D Y, 2013. Slope engineering[M]. Chongqing: Chongqing University Press. (in Chinese with English abstract) LIU S, 2018. Study on the prediction of time and space of the rainfall type landslides in the north slope of West open pit[D]. Shenyang: Shenyang Jianzhu University. (in Chinese with English abstract) LV J J, 2020. Analysis of landslide risk and mineralogical characteristics in Qiantaishan, Fushun, Liaoning[D]. Beijing: China University of Geosciences (Beijing). (in Chinese with English abstract) NAI L, WANG R X, 2010. GIS-based landslide monitoring and forecasting system and its application in the landslide of Fushun West open-pit[J]. Journal of Jilin University (Earth Science Edition), 40(6): 1359-1364. (in Chinese with English abstract) SHEN L, LIU J H, JIANG Z M, 1999. Distribution and feature of the geological disasters in the Fushun West open pit[J]. Journal of Geological Hazards and Environment Preservation, 10(1): 34-38. (in Chinese with English abstract) SHEN L, JI Y S, LIU D Y, et al., 2006. Deformation mechanism and stability analysis of slope toppling-sliding rock mass due to mining: A case study on west open pit slope of Fushun Coal Mine[J]. The Chinese Journal of Geological Hazard and Control, 17(3): 63-68. (in Chinese with English abstract) SHEN L, 2008. Comprehensive control project practice of north wall geological environment in Fushun western surface mine[J]. Opencast Mining Technology (6): 18-20, 23. (in Chinese with English abstract) The Tenth Geological Brigade of Liaoning Province, 2019. Geological disaster environment investigation and key technology research and 3D visualization integration[R]. Shenyang: Liaoning Provincial Department of Natural Resources. (in Chinese) WAN J W, FENG C J, QI B S, et al., 2020. Characteristics and susceptibility evaluation of geohazard development in Shunping county[J]. Hebei province, 26(4): 604-614. (in Chinese with English abstract) WANG C M, HUANG J, LI Q, et al., 2019. Evaluation of geological hazard vulnerability in Lyuliang City in Shanxi Province based on coupling of information content model and Logistic regression model[J]. Water Resources and Hydropower Engineering, 50(3): 132-138. (in Chinese with English abstract) WANG L W, 2020. Application of slope radar monitoring and early warning technology in Fushun western open-pit mine[J]. Safety in Coal Mines, 51(11): 165-168. (in Chinese with English abstract) WANG X H, LIU W, 2019. Sensitivity analysis of toppling deformation at a reverse-dip rock slope based on total displacement[J] Geology and Exploration, 55(5): 1268-1275. (in Chinese with English abstract) WU D, SHAO Q Q, LIU J Y, 2012. Assessment of water conservation function of forest ecosystem in Taihe County, Jiangxi Province[J] Progress in Geography, 31(3): 330-336. (in Chinese with English abstract) YANG T H, XIE L K, WANG S Y, et al., 2005. Effect evaluation of distortion for north project of side slope in Fushun west open cast[J]. Chinese Journal of Rock Mechanics and Engineering, 24(11): 1841-1846. (in Chinese with English abstract) ZHANG Y X, LAN H X, LI L P, et al., 2019. Combining statistical model and physical model for re-fined assessment of geological disaster: a case study of Longshan community in Fujian province[J]. Journal of Engineering Geology, 27(3): 608-622. (in Chinese with English abstract) ZHANG Z Y, WANG S T, WANG L S, et al., 2009. Analysis principles of engineering geology[M]. 3rd ed. Beijing: Geological Publishing House. (in Chinese) ZHAO Y, GUO J L, SHI Y, et al., 2021. A groundwater inflow prediction method for Fushun west open-pit mine based on GMS[J]. Environmental Engineering, 39(1): 75-79+129. (in Chinese with English abstract) ZHOU J J, ZHANG X M, ZHAO F S, et al., 2019. Research on risk assessment of geological hazards in Qinling-Daba mountain area, south Shaanxi Province[J]. Journal of Geomechanics, 25(4): 544-553. (in Chinese with English abstract) ZU G L, 1993. Model study on deformation and failure mechanism of north slope in west surface mine of Fushun mining district[J]. Coal Technology of Northeast China (6): 21-26. (in Chinese with English abstract) 陈宗基, 1989. 抚顺西露天矿北帮边坡的稳定性及其有关问题[C]//第二次全国岩石力学与工程学术会议论文集. 广州: 中国岩石力学与工程学会: 1-16. 崔原, 2018. 抚顺西露天矿南帮滑坡地质特征与机理分析[D]. 长春: 吉林大学. 邓焱, 郝喆, 许春东, 等, 2021. 大型露天矿闭坑后地下水资源调整预测研究[J]. 煤炭工程, 53(2): 132-136. 傅冰骏, 1990. 抚顺石油一厂及抚顺西露天矿工程地质基本情况[J]. 岩石力学与工程学报 (4): 266-270. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX199004003.htm 高安琪, 王金安, 李飞, 等, 2021. 西露天矿周边建筑物损害区位特征分析[J/OL]. 煤炭学报: 1-11[05-16]. https://doi.org/10.13225/j.cnki.jccs.2019.1628. 郝喆, 陈红丹, 许春东, 等, 2020. 抚顺西露天矿及周边水环境调查与评价[J]. 露天采矿技术, 35(3): 15-18. https://www.cnki.com.cn/Article/CJFDTOTAL-LTCM202003005.htm 何满潮, 霍起元, 1986. 萨尔码方法及其应用[J]. 长春地质学院学报 (1): 65-72. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ198601008.htm 仉义星, 兰恒星, 李郎平, 等, 2019. 综合统计模型和物理模型的地质灾害精细评估: 以福建省龙山社区为例[J]. 工程地质学报, 27(3): 608-622. https://www.cnki.com.cn/Article/CJFDTOTAL-GCDZ201903020.htm 纪玉石, 孙豁然, 刘晶辉, 2006. 露天矿闭坑环境地质灾害危险性分区研究[J]. 煤炭学报, 31(3): 305-309. doi: 10.3321/j.issn:0253-9993.2006.03.008 李爱华, 张德琦, 梁浩骞, 2010. 抚顺东露天矿东帮某段边坡稳定性分析[J]. 露天采矿技术 (1): 21-23. doi: 10.3969/j.issn.1671-9816.2010.01.007 李洪明, 2019. 3S技术在抚顺西露天矿滑坡监测中的应用[D]. 长春: 吉林大学. 李淑艳, 2008. 抚顺市矿山环境地质灾害形成机制与防治对策研究[D]. 北京: 煤炭科学研究总院. 辽宁省第十地质大队, 2019. 地质灾害环境调查与关键技术研究及三维可视化成果集成[R]. 沈阳: 辽宁省自然资源厅. 刘大勇, 2009. 抚顺煤田地质灾害成因机理与预测分析研究[D]. 沈阳: 东北大学. 刘东燕, 2013. 边坡工程[M]. 重庆: 重庆大学出版社. 刘硕, 2018. 西露天矿北帮降雨型滑坡时间空间预报研究[D]. 沈阳: 沈阳建筑大学. 吕佳进, 2020. 辽宁抚顺千台山滑坡危险性及其矿物学特征分析[D]. 北京: 中国地质大学(北京). 佴磊, 王日勖, 2010. 地理信息滑坡监测预报系统及其在抚顺西露天矿滑坡中的应用[J]. 吉林大学学报(地球科学版), 40(6): 1359-1364. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ201006020.htm 申力, 刘晶辉, 江智明, 1999. 抚顺西露天矿边坡工程地质灾害浅析[J]. 地质灾害与环境保护, 10(1): 34-38. doi: 10.3969/j.issn.1006-4362.1999.01.006 申力, 纪玉石, 刘大勇, 等, 2006. 采矿引起的边坡倾倒滑移变形机理与变形安全性分析研究: 以抚顺西露天矿边坡为例[J]. 中国地质灾害与防治学报, 17(3): 63-68. doi: 10.3969/j.issn.1003-8035.2006.03.015 申力, 2008. 抚顺西露天矿北帮地质环境综合治理工程实践[J]. 露天采矿技术 (6): 18-20, 23. https://www.cnki.com.cn/Article/CJFDTOTAL-LTCM200806008.htm 万佳威, 丰成君, 戚帮申, 等, 2020. 河北省顺平县地质灾害发育特征及易发性评价[J]. 地质力学学报, 26(4): 604-614. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLX202004017.htm 王昌明, 黄健, 李桥, 等, 2019. 基于信息量模型与Logistic回归模型耦合的山西吕梁市地质灾害易发性评价研究[J]. 水利水电技术, 50(3): 132-138. https://www.cnki.com.cn/Article/CJFDTOTAL-SJWJ201903018.htm 王立文, 2020. 边坡雷达监测预警技术在抚顺西露天矿的应用[J]. 煤矿安全, 51(11): 165-168. https://www.cnki.com.cn/Article/CJFDTOTAL-MKAQ202011035.htm 王雪辉, 刘卫, 2019. 基于总位移指标的反倾岩质边坡倾倒变形影响因子敏感性分析[J]. 地质与勘探, 55(5): 1268-1275. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKT201905014.htm 吴丹, 邵全琴, 刘纪远, 2012. 江西泰和县森林生态系统水源涵养功能评估[J]. 地理科学进展, 31(3): 330-336. https://www.cnki.com.cn/Article/CJFDTOTAL-DLKJ201203007.htm 杨天鸿, 解联库, 王善勇, 等, 2005. 抚顺西露天矿北帮边坡治理工程效果初步评价[J]. 岩石力学与工程学报, 24(11): 1841-1846. doi: 10.3321/j.issn:1000-6915.2005.11.004 张倬元, 王士天, 王兰生, 等, 2009. 工程地质分析原理[M]. 3版. 北京: 地质出版社. 赵研, 郭嘉琳, 施洋, 等, 2021. 基于GMS的抚顺西露天矿地下水涌水量模拟研究[J]. 环境工程, 39(1): 75-79, 129. 周静静, 张晓敏, 赵法锁, 等, 2019. 陕南秦巴山区地质灾害危险性评价研究[J]. 地质力学学报, 25(4): 544-553. 祖国林, 1993. 抚顺西露天矿北帮边坡变形与破坏机制的模型研究[J]. 东北煤炭技术 (6): 21-26. -
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