Investigation on Factors Affecting Slope Instability in Open-pit Mines Based on Geophysical Prospecting Technology

Ensheng KANG; Haidong MENG; Zihao ZHAO; Tao HE

doi:10.11872/j.issn.1005-2518.2020.03.166

Gold Science and Technology >

2020 , Vol. 28 >Issue 3: 363 - 371

DOI: https://doi.org/10.11872/j.issn.1005-2518.2020.03.166

Mining Technology and Mine Management

Investigation on Factors Affecting Slope Instability in Open-pit Mines Based on Geophysical Prospecting Technology

Ensheng KANG ^,¹^,² ,
Haidong MENG ^,¹ ,
Zihao ZHAO ² ,
Tao HE ²

Expand

^1. Mining Institute，Inner Mongolia University of Science and Technology，Baotou 014010，Inner Mongolia, China
^2. School of Mining and Coal，Inner Mongolia University of Science and Technology，Baotou 014010，Inner Mongo-lia, China

Received date: 2019-10-07

Revised date: 2020-02-12

Online published: 2020-07-01

Fold

Highlights

Weak structural plane is an important factor of slope instability in open-pit mines.It is very important to detect the position of weak structural plane accurately and carry out prediction and early warning in time for the production of open-pit mines.The existence of broken rock，mud or groundwater in the fault of mine slope is the main reason for the formation of weak structural plane，which is obviously different from the complete rock mass in terms of physical properties such as apparent resistivity and dielectric constant.In order to find out the influence of engineering geological conditions and meteorological and hydrological conditions on the formation of the weak structural surface，locate the position of the weak structural surface accurately，and analyze the role of the weak structural surface in the process of slope instability，the detection and research on the influencing factors of the slope instability of the open pit mine were carried out with the Bayan Obo iron mine slope as the research object.Because of the factors such as the high and steep slope formed by mining and the deformed slope body，it is difficult to arrange the high-density electrical method on site.The comprehensive geophysical exploration technology of high-density electrical method and ground penetrating radar(GPR) method were used to survey the slope in the study area，and the survey results were explained.Three high-density survey lines，eight high-density electrical sections and two geological radar survey lines were arranged outside the boundary line of the northern boundary of the study area.The results of high-density electrical method show that the apparent resistivity of intact dolomite and slate in the study area is high，while that of broken slate，fault and water bearing slate is obviously decreased.According to the results of GPR，the whole rock mass has strong reflected energy，and the broken slate and fault are reflected shadow area.The comprehensive geophysical exploration method starts from the different physical properties of the slope rock mass to detect the geological structure of the slope.In this study，the high-density electrical method and the ground penetrating radar survey method make use of the development degree of the slope cracks，the difference of the physical properties and the resistivity of the surrounding rock to carry out the fracture distribution survey.At the same time，using the characteristics of good water conductivity and strong electromagnetic wave absorption to carry out the underground water survey，and verify the inversion results with each other，and combine the drilling data and the engineering hydrogeological data to carry out the slope survey in the study area.It can effectively improve the positioning accuracy of the weak surface.

Cite this article

Ensheng KANG , Haidong MENG , Zihao ZHAO , Tao HE . Investigation on Factors Affecting Slope Instability in Open-pit Mines Based on Geophysical Prospecting Technology[J]. Gold Science and Technology, 2020 , 28(3) : 363 -371 . DOI: 10.11872/j.issn.1005-2518.2020.03.166

[an error occurred while processing this directive]

http://www.goldsci.ac.cn/article/2020/1005-2518/1005-2518-2020-28-3-363.shtml

References

Publishing order | Descend order by publishing year | Descend order by cited within

1	成永刚.边坡失稳的水岩相互作用机理分析[J].路基工程，2006（1）：3-5. Cheng Yonggang.Analysis of water-rock interaction me-chanism of slope instability[J].Subgrade Engineering，2006 （1）: 3-5.

2	郝全明，任杰.基于物探探查某露天矿边坡地质情况研究[J].煤炭技术，2017，36（10）：90-92. Hao Quanming， Ren Jie.Research on slope geology of a certain open-pit mine based on geophysical exploration[J].Coal Technology，2017，36（10）：90-92.

3	汤金云.物探技术在高边坡安全调查中的应用[J].人民珠江，2015，36（3）：48-50. Tang Jinyun.Application of geophysical prospecting technology in high slope safety investigation[J].People’s Pearl River，2015，36（3）：48-50.

4	王永强，曹竹，谭钦文，等.露天矿滑坡体的探地雷达检测技术[J].煤炭学报，2011，36（7）：1093-1097. Wang Yongqiang， Cao Zhu， Tan Qinwen，et al.GPR detection of open-pit landslide[J].Journal of China Coal Society，2011，36（7）：1093-1097.

5	孙光林，胡江春，边亚东，等.露天矿边坡浅层滑面无损探测技术研究及应用[J].金属矿山，2018，47（4）：58-62. Sun Guanglin， Hu Jiangchun， Bian Yadong，et al.Research and application of open pit slope shallow surface nondestructive detection technology[J].Metal Mine，2018，47（4）：58-62.

6	门业凯，王恩德，付建飞，等.基于地电场数值模拟的边坡软弱层稳定性评价[J].安全与环境学报，2015，15（4）：29-33. Yekai Men， Wang Ende， Fu Jianfei，et al.Evaluation of the stability of the weak layer in the side slope based on geo-electric field numerical simulation[J].Journal of Safety and Environment，2015，15（4）：29-33.

7	温学飞，何滔，孟海东，等.基于综合物探法的矿山土质滑坡滑动面探测[J].物探化探计算技术，2018，40（4）：479-486. Wen Xuefei， He Tao， Meng Haidong，et al.Detection of sliding surface of mining landslide based on comprehensive geophysical prospecting method[J].Computing Te-chniques for Geophysical and Geochemical Exploration，2018，40（4）：479-486.

8	赵自豪.露天矿高边坡地质灾害探测与边坡失稳风险评估[D].北京：中国矿业大学（北京），2015. Zhao Zihao.Detection of Geological Disaster and Instability Risk Assessment of Open Pit High Slope[D].Beijing：China University of Mining and Technology（Beijing），2015.

9	杨成华，孟海东.高密度电法探测露天矿地下水的应用研究[J].煤炭技术，2018，37（2）：189-191. Yang Chenghua， Meng Haidong.Applied research on groundwater detection in open-pit mines by high density electrical method[J].Coal Technology，2018，37（2）：189-191.

10	雷宛，肖宏跃.工程与环境物探教程[M].北京：地质出版社，2006. Lei Wan， Xiao Hongyue.Course of Engineering and Environmental Geophysics[M].Beijing：Geological Press，2006.

11	孟奇猛.综合物探在小龙谭煤田西帮边坡岩体勘察中的应用[J].勘察科学技术，1997（4）：57-61. Meng Qimeng.Application of synthetic geophysical exploration in the west wall slope rockmass investigation of Xiaolongtan coal mine[J].Survey Science and Technology，1997（4）：57-61.

12	赵自豪，吴兵，任玉辉.基于综合物探的露天矿高边坡滑坡风险评估[J].金属矿山，2014，43（10）：148-151. Zhao Zihao， Wu Bing， Ren Yuhui.Open-pit slope landslide risk assessment based on comprehensive geophysical prospecting method[J].Metal Mine，2014，43（10）：148-151.

13	常来山，杨宇江.露天矿边坡稳定性分析与控制[M].北京:冶金工业出版社，2014. Chang Laishan， Yang Yujiang.Analysis and Control of Slope Stability of Open-pit Mine [M].Beijing：Metallurgical Industry Press，2014.

14	彭冬菊.边坡地质灾害隐患探测方法研究[D].长沙：中南大学，2008. Peng Dongju.Study on the Detection Method of Geological Hazard Hidden Danger of Slope[D].Changsha：Central South University，2008

15	孙润东.地质雷达在既有铁路线边坡病害检测中的应用[J].山西建筑，2014，40（10）：136-137. Sun Rundong.The application of geological radar in existing railway line slope diseases detection[J].Shanxi Architecture，2014，40（10）：136-137.

16	李祖能，毛承英.地质雷达在高速公路岩溶路基探测中的应用[J].西部交通科技，2018（4）：23-26，31. Li Zuneng， Mao Chengying.Application of geological radar in detection of expressway karst subgrade[J].Western China Communications Science and Technology，2018（4）：23-26，31.

17	张辉，刘振鸿，杨青，等.地质雷达在监测地下水石油烃污染中的应用[J].环境工程，2013，31（增1）：597-600. Zhang Hui， Liu Zhenhong， Yang Qing，et al.Application of GPR radar in monitoring groundwater contamination of petroleum hydrocarbon [J].Environmental Engineering，2013，31（Supp.1）：597-600.

18	陈松，余绍文，刘怀庆，等.高密度电法在水文地质调查中的应用研究——以江平圩幅为例[J].地球物理学进展，2017，32（2）：849-855. Chen Song， Yu Shaowen， Liu Huaiqing，et al.Application and research of high density resistivity method in hydrogeological prospecting—A case study on Jiangping town map[J].Progress in Geophysics，2017，32（2）：849-855.

19	邓华锋，胡安龙，李建林，等.水岩作用下砂岩劣化损伤统计本构模型[J].岩土力学，2017，38（3）：631-639. Deng Huafeng， Hu Anlong， Li Jianlin，et al.Statistical damage constitutive model of sandstone underwater-rock interaction[J].Rock and Soil Mechanics，2017，38（3）：631-639.

20	牛传星，秦哲，冯佰研，等.水岩作用下蚀变岩力学性质损伤规律[J].长江科学院院报，2016，33（8）：75-79. Niu Chuanxing， Qin Zhe， Feng Baiyan，et al.Regularity of the damage of altered rock’s mechanical properties under water-rock interaction[J].Journal of Yangtze River Scientific Research Institute，2016，33（8）：75-79.

Options

Outlines