Results 171 to 180 of about 14,305 (228)
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The effects of karst collapse on the environments in north China
Environmental Geology, 2006In this paper, a systematic study was completed on the distribution features and origins of karst collapses in north China. There are 65 modern karst collapse areas with 1,416 karst collapse pits and 38 paleo–karst collapse areas with 3,654 paleo-collapse pillars. Modern karst collapses are mainly distributed in the plain region of the east Taihang and
He Keqiang +3 more
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Karst collapse in cities and mining areas, China
Environmental Geology (New York), 1988Karst collapse is a dynamic geological phenomenon, in which the rock mass or deposits overlying the karstified zone subsides down along the karst cavity, resulting in a collapse pit or sinkhole. After discussing the typical examples of collapse emerging in the karst cities and mines in provinces and regions of South China, such as Guangdong.
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Regional risk assessment of karst collapse in Tangshan, China
Environmental Geology, 2001This paper discusses the reasons why the number of karst collapses has been increasing in Tangshan, China, since 1978. It gives the main factors that influence the regional risk of karst collapse and the method for assessing it. Using the risk assessment method developed, three zones in downtown Tangshan, with different risk levels, were delineated ...
J Xiang
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Characteristics and evolution of karst collapse columns in the Huainan coalfield
Science of The Total Environment, 2023Karst collapse columns (KCCs) seriously affect the mining safety of deep coal seams. This study systematically summarizes and analyzes the development of KCCs, and classifies the different development stage to identify their development stages and evolutionary process in the Huainan coalfield.
Tingting, Yang +5 more
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Summary editorial for karst hydrogeology: advances in karst collapse studies
Environmental Earth Sciences, 2018Karst collapses occur in various sizes and by various mechanisms. No karst collapses are the same, and each needs to be treated individually. Decades of investigation of and experience with these collapses make it clear that addressing karst collapse hazards requires a multi-disciplinary approach that integrates geomorphology, engineering geology ...
Wanfang Zhou, Mingtang Lei
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Risk evaluation of Karst collapse using GIS and RS
2014 IEEE Geoscience and Remote Sensing Symposium, 2014This article extracts and analyzes disaster information by using GIS and RS technology. It determines the weights by using the Analytic Hierarchy Process (AHP), and it constructs risk evaluation model to do risk evaluation of geological disasters. In this paper, Lai bin, Jili of Guangxi Province is selected as an example to evaluate the risk of Karst ...
Guoqing Zhou 0001 +3 more
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Stability Charts for the Collapse of Residual Soil in Karst
Journal of Geotechnical and Geoenvironmental Engineering, 2009Collapse of the residual soil over bedrock cavities often occurs during construction in karst terrain, particularly when the thickness of the residuum is reduced during excavation. Even if an estimate of the strength of the residual soil is known, uncertainty with respect to the size/geometry of the subterranean voids makes a detailed analysis ...
Eric C. Drumm +3 more
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Karst Collapse Mechanism and Criterion for Its Stability
Acta Geologica Sinica - English Edition, 2001AbstractKarst collapse, caused by natural or artificial abstraction of groundwater, has been a focus of environmental geological problems for its ever‐increasing hazardousness. The potential erosion theory and vacuum suction erosion theory, which reveal the origin of karst collapse macroscopically, are popularly accepted.
HE Keqiang, LIU Changli, WANG Sijing
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New advances in karst collapse research in China
Environmental Geology, 2002Until 2000, more than 1,446 karst collapse events and 45,037 sinkhole pits have been documented in China. In this paper, focusing on new achievements of karst collapse research in China, a large-scale model experiment, a method of risk assessment and data management of karst collapse based on geographic information system technology are introduced for ...
Mingtang Lei, Xiaozhen Jiang, Li Yu
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