From in situ stress and discontinuities to the strength of granites: comparison and case study

doi:10.1007/s12303-008-0036-3

	From in situ stress and discontinuities to the strength of granites: comparison and case study
	Shang, Yanjun 2; Park, Hyeong-Dong 1; Yuan, Guangxiang 2; Sun, Yuanchun 2; Gao, Qian 2
刊名	GEOSCIENCES JOURNAL
	2008-12-01
卷号	12 期号:4 页码:361-372
关键词	granite in situ stress discontinuity strength unloading weathering
ISSN号	1226-4806
DOI	10.1007/s12303-008-0036-3
文献子类	Article
英文摘要	The distinctive weathering profile and discontinuity of granites, dipping slightly at shallow depths and steeply in larger depths, are regarded as being due to their physical and geo-mechanical properties. This paper compares vertical stress (Sv) and overlain weight (gamma h) drawn from different kinds of in situ stress measurements, as well as coefficients of lateral stress. Stress trends are connected with discontinuities (joints and dykes), which reveal their relationships in space and dip angles of joints and dykes are compared in space, together with shear plane plunges and the strength of rocks from laboratory tests. As a result, it was found that the relict structural geostress contributes to maximum horizontal stress, especially at shallow depths. The most common feature is the high coefficient of lateral stress, which is mostly attributed to unloading in shallow depths and stress concentration at a certain depth after the erosion of overlain beds and the exposure of granites at the ground surface. Therefore, the weathering profiles and weathered capsule of granites could be interpreted from this viewpoint. One of the two main features of this paper is the connection of the extraordinary values of the lateral coefficient of in situ stress with unloading and the typical weathering profile at shallow depths. Another is the comparison of the shear stress and strength from in situ and laboratory tests, with a series of data from the same location and depth.
WOS关键词	HONG-KONG ; CLASSIFICATION
WOS研究方向	Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000262754200006
资助机构	Research Institute of Engineering Science, Seoul National University, Korea ; Research Institute of Engineering Science, Seoul National University, Korea ; Chinese Natural Science Foundation Committee(40372125) ; Chinese Natural Science Foundation Committee(40372125) ; Research Institute of Engineering Science, Seoul National University, Korea ; Research Institute of Engineering Science, Seoul National University, Korea ; Chinese Natural Science Foundation Committee(40372125) ; Chinese Natural Science Foundation Committee(40372125) ; Research Institute of Engineering Science, Seoul National University, Korea ; Research Institute of Engineering Science, Seoul National University, Korea ; Chinese Natural Science Foundation Committee(40372125) ; Chinese Natural Science Foundation Committee(40372125) ; Research Institute of Engineering Science, Seoul National University, Korea ; Research Institute of Engineering Science, Seoul National University, Korea ; Chinese Natural Science Foundation Committee(40372125) ; Chinese Natural Science Foundation Committee(40372125)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/68690]
专题	中国科学院地质与地球物理研究所
通讯作者	Park, Hyeong-Dong
作者单位	1.Seoul Natl Univ, Dept Energy Syst Engn, Seoul 151744, South Korea 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Engn Geomech, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Shang, Yanjun,Park, Hyeong-Dong,Yuan, Guangxiang,et al. From in situ stress and discontinuities to the strength of granites: comparison and case study[J]. GEOSCIENCES JOURNAL,2008,12(4):361-372.
APA	Shang, Yanjun,Park, Hyeong-Dong,Yuan, Guangxiang,Sun, Yuanchun,&Gao, Qian.(2008).From in situ stress and discontinuities to the strength of granites: comparison and case study.GEOSCIENCES JOURNAL,12(4),361-372.
MLA	Shang, Yanjun,et al."From in situ stress and discontinuities to the strength of granites: comparison and case study".GEOSCIENCES JOURNAL 12.4(2008):361-372.