A Study of Cause of Abrupt Ground Surface Collapse under Special Geological Conditions

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	A Study of Cause of Abrupt Ground Surface Collapse under Special Geological Conditions
	Chen, Congxin; Xiao, Guofeng; Huang, Pinglu
刊名	DISASTER ADVANCES
	2012
卷号	5 页码:152-157
关键词	deep excavation special geological mass abrupt collapse
ISSN号	0974-262X
英文摘要	The cause of abrupt ground surface collapse occurring in the deep excavation of Chengchao iron mine surrounded by a special geological mass is studied in this present paper. The results have shown that the special geological environment governs the process and type of the collapse, which is the major cause of the abrupt collapse. The hard gypsum body as the impermeable layer in the overburden guarantees the possibility of the existence of a great number of water bodies in the upper aquifer layers during underground excavation activities. The hard gypsum body is liable to corrosion and softening under the hydrodynamic condition, as a result, the original low strength of the hard gypsum becomes lower. This property and the occurrence state of gypsum bodies create the condition for the abrupt collapse of ground surface. The fast discharge of karst water in marble rocks over the hard gypsum body results in sudden increasing high negative pressure in the interior, which is the direct cause of the abrupt ground surface collapse. The hydrodynamic pressure caused by underground water flowing and the hydrostatic pressure caused by assemblage of underground water is the force driving the collapse.
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
语种	英语
出版者	DISASTER ADVANCES
WOS记录号	WOS:000301618500026
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3329]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Chen, Congxin,Xiao, Guofeng,Huang, Pinglu. A Study of Cause of Abrupt Ground Surface Collapse under Special Geological Conditions[J]. DISASTER ADVANCES,2012,5:152-157.
APA	Chen, Congxin,Xiao, Guofeng,&Huang, Pinglu.(2012).A Study of Cause of Abrupt Ground Surface Collapse under Special Geological Conditions.DISASTER ADVANCES,5,152-157.
MLA	Chen, Congxin,et al."A Study of Cause of Abrupt Ground Surface Collapse under Special Geological Conditions".DISASTER ADVANCES 5(2012):152-157.