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2020 Vol. 39, No. 4

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Key scientific issues in research on landslide hazard induced by underground mining in mountainous areas with coal-bearing strata of southwestern China
LI Jun, CHU Hongliang, LI Bin, HE Kai, GAO Yang
2020, 39(4): 453-466. doi: 10.11932/karst20200401
Abstract PDF(8359KB) icon1568 icon253
Abstract:
Underground mining activities often trigger large-scale landslide on mountain slopes, causing casualties and property losses. Based on the analysis of the development characteristics of landslide hazard induced by underground mining, this paper considers that such landslide hazard often occur in the...
Identification of large-scale landslide hazards based on differences of geological structure prone to sliding and multiple-source data in karst mountainous areas
HE Kai, LI Bin, ZHAO Chaoying, GAO Yang, CHEN Liquan, LIU Pengfei
2020, 39(4): 467-477. doi: 10.11932/karst20200402
Abstract PDF(57458KB) icon1440 icon284
Abstract:
The geological environment in karst mountainous areas of southwest China is complex and fragile， where large landslide hazards are common. The inaccurate geological cognition of karst mountainous area will directly lead to the lack of disaster identification ability. Based on the three kinds of main...
Geological models classification of deformation and failures for collapses and landslides in karst mountainous areas
GUO Jingyun, LI Shouding, LI Bin, LI Xiao, BI Xingtao, FANG Ranke
2020, 39(4): 478-491. doi: 10.11932/karst20200403
Abstract PDF(51641KB) icon1631 icon239
Abstract:
The special engineering hydrology structure in karst mountainous areas results in extremely developed geological disasters such as collapses， landslides and debris flow， which bring about serious casualties and economic and social losses. It is of great theoretical and application values for risk pr...
Review on the connotation and methods of emergency investigations to geological hazards in mountainous area
WANG Yu, HUANG Cheng, ZHOU Cuiqiong, YANG Yingdong, XIAO Huazong, YAN Xiangsheng, ZHANG Lingze, WANG Yuqin
2020, 39(4): 492-499. doi: 10.11932/karst20200404
Abstract PDF(1096KB) icon1944 icon285
Abstract:
Emergency investigations of geological hazards are immediate surveys to sudden geological hazards or dangerous situations. Real-time information should be provided timely during the survey period of one to several days， and the emergency investigation report should be submitted as soon as possible， ...
Experimental study on nonlinear flow properties of pipe-fissure water in carbonate rocks during failures
SUN Huan, LIU Xiaoli, WANG Enzhi, LIU Chi, ZHANG Jianmin
2020, 39(4): 500-508. doi: 10.11932/karst20200405
Abstract PDF(7253KB) icon1815 icon201
Abstract:
This study focus on nonlinear flow properties of pipe-fissure water in carbonate rocks during failures. A visible flow experiment was carried out to observe pipe-fissure water during rock failures. Flow transition patterns of pipes and fissures water were quantitatively described according to the ex...
Experimental study on the deformation mechanism of upper-hard and lower-soft gently dipping rock on high slopes under the mining effect
ZHONG Zuliang, WANG Nanyun, LI Bin, LIU Xinrong, Cui Fangpeng, YANG Zhongping
2020, 39(4): 509-517. doi: 10.11932/karst20200406
Abstract PDF(16385KB) icon1556 icon202
Abstract:
Complex geological environments characterize karst mountainous areas in southwest China with frequent underground mining activities and large-scale landslide hazards. The purpose of this work was to understand the law of slope subsidence and ground fissure development during mining activities under ...
Monitoring the Jianshanying landslide in a karst mountainous area of Guizhou by optical remote sensing
CHEN Liquan, ZHAO Chaoying, REN Chaofeng, WANG Peijie, CHEN Xuerong, CHEN Hengyi
2020, 39(4): 518-523. doi: 10.11932/karst20200407
Abstract PDF(32261KB) icon1378 icon207
Abstract:
Landslides in karst mountainous areas of southwest China induced by underground mining can cause huge economic losses and casualties. Such hazard is characterized by large deformation gradients and serious collapse of the surface. This work takes the Jianshanying mining-induced landslide as an examp...
Discrete element modelling on dynamic triggering mechanism of the Pusa landslide in Nayong county, Guizhou Province
CUI Fangpeng, LI Bin, YANG Zhongping, WU Lele, LI Ning, PENG Jianquan
2020, 39(4): 524-534. doi: 10.11932/karst20200408
Abstract PDF(81352KB) icon1475 icon224
Abstract:
This paper presents a discrete element modeling using UDEC software to reproduce the dynamic response of the Pusa landslide triggered by the combination of goafs, deep major karst cracks, heavy rainfall and continual blasts during underground coal mining. Based on the reproduction, the dynamic trigg...
Impact and scraping effects of the high-elevation,long-runout "7.23" landslide in Shuicheng , Guizhou
GAO Haoyuan, GAO Yang, HE Kai, LI Bin, ZHAO Zhinan, CHEN Lichuan, WANG Yongfu
2020, 39(4): 535-546. doi: 10.11932/karst20200409
Abstract PDF(27743KB) icon1435 icon223
Abstract:
This paper analyzes the Shuicheng"7.23" landslide in Guizhou, 2019. Based on the field survey, Unmanned Aerial Vehicle（UAV） images and numerical simulation, the movement process, and impact and scraping effects of this landslide are characterized. Results suggest that， (1) the Shuicheng"7.23" landsl...
Current situation of research on failure mechanism and stability of rock slopes under hydraulic action
LIU Xinrong, XIONG Fei, LI Bin, YANG Zhongping, ZHOU Xiaohan
2020, 39(4): 547-558. doi: 10.11932/karst20200410
Abstract PDF(1368KB) icon1657 icon191
Abstract:
Water is one of the important factors triggering landslides， and its physical， chemical and mechanical effects on rock mass determine the slope stability. Based on the current domestic and foreign research status and study cases of rock-slope landslides， this paper summarizes the hydraulic hazard-ca...
Characteristics and the hazard-inducing effect of groundwater systems in Zongling high-level landslide areas
Yi Lianxing
2020, 39(4): 559-566. doi: 10.11932/karst20200411
Abstract PDF(7046KB) icon1520 icon146
Abstract:
Taking two landslide areas of the Zongling collapse-landslide zone in Nayong county， Guizhou province as examples， this work conducted hydrogeological surveys， hydrodynamic field analysis， hydrochemistry research and flow dynamic comparative analysis to examine the hazard-inducing effect of groundwa...
Karstification and slope failure in carbonate areas of Three Gorges Reservoir
CHEN Xiaoting, HUANG Bolin, LI Bin, ZHANG Peng, QIN Zhen
2020, 39(4): 567-576. doi: 10.11932/karst20200412
Abstract PDF(14957KB) icon1510 icon186
Abstract:
A large number of karst unstable banks in the gorge area of the Three Gorges Reservoir stand on both sides of the main stream of the Yangtze River， endangering the safety of the golden waterway. Based on field survey， exploration and mechanical analysis， this work analyzes the relationship between k...
Evaluation method of development degree based on features of intense dissolution layer
CAO Xianfa, LIU Yukang, LIU Zhikui, ZHANG Binghui
2020, 39(4): 577-583. doi: 10.11932/karst20200413
Abstract PDF(2014KB) icon1689 icon162
Abstract:
It is common to make errors in the selection of building foundation in karst terrains. The root reason is that the practical difficulty of karst treatment in foundation cannot be reasonably reflected by the existing evaluation of karst development degree. Taking New Terminal of Nanning Wuxu Internat...
Stability of foundation rock mass beneath the A4 rescue platform in the Ruyifeng scenic spot, Yangshuo, Guilin
XIE Yanhua, ZHANG Binghui, SUN Gangchen, LIU Baochen, CHEN Xuandong, FAN Xindong
2020, 39(4): 584-591. doi: 10.11932/karst20200414
Abstract PDF(13182KB) icon1555 icon145
Abstract:
This work makes an assessment of the stability of the rock mass beneath the A4 rescue platform during the construction of the Ruyifeng scenic spot project in Yangshuo， Guilin. It builds on the combination of the methods of field surveys and theoretical analysis including stereographic projection qua...
Features of karst development and geotechnical effects in the Liaoshan Tunnel on the E-Han expressway
LI Fangtao, LI Huangming, HU Zhiping, CHEN Nannan, YAN Changgen
2020, 39(4): 592-603. doi: 10.11932/karst20200415
Abstract PDF(66189KB) icon1642 icon171
Abstract:
The Liaoshan tunnel on the E-Han expressway is located in a karst area of southwest China with frequent geological hazards. Based on the investigation of the geological environment in the karst area，this work clarified the characteristics of karst development in the tunnel site area，analyzed its law...
Study on the characteristics of karst water system and tunnel route selection in Wanshoushan area, Yunnan Province
REN Yanan, WAN Junwei, HUANG Kun, HE Xinhui
2020, 39(4): 604-613. doi: 10.11932/karst20200416
Abstract PDF(28588KB) icon1319 icon146
Abstract:
During construction of tunnels in karst areas， geologic hazards， such as water bursting and mud invasion， often occur threatening the project and people’ safety. Thus the optimization of tunnel line is very important. Taking the Wanshoushan tunnel of the Sanqing expressway in Yunnan as an example， t...
Finite element analysis on safety thickness of the inrush prevention layer in rock beds of the small Three Gorges karst tunnel
ZHANG Qiao
2020, 39(4): 614-621. doi: 10.11932/karst2020y33
Abstract PDF(3609KB) icon1306 icon143
Abstract:
In view of the geotechnical characteristics of the karst in the small Three Gorges tunnel， the finite element method is used to establish a numerical calculation model of a typical tunnel section to analyze the variation laws of tunnel surrounding rock displacement and plastic zones when the water f...
Prediction of karst surface subsidence risk in the Fankou lead-zinc mine area based on PCA-PSO-SVM
ZHOU Aihong, NIU Pengfei, YUAN Ying, HUANG Hucheng
2020, 39(4): 622-628. doi: 10.11932/karst2020y30
Abstract PDF(1866KB) icon1579 icon138
Abstract:
Karst surface subsidence is a dynamic geological phenomenon with the characteristics of concealment and suddenness， which results from the joint effect many factors. Thus， it is difficult to accurately predict the risk of surface subsidence by the conventional simple mathematical model. In this pape...

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