Investigation on relationship of the burial depth and mechanical properties for sedimentary rock

doi:10.1007/s12517-020-05757-1

	Investigation on relationship of the burial depth and mechanical properties for sedimentary rock
	Liu, Xuewei 2,3; Liu, Quansheng 1; Kang, Yongshui 2; Liu, Bin 2
刊名	ARABIAN JOURNAL OF GEOSCIENCES
	2020-08-05
卷号	13 期号:16 页码:9
关键词	Sedimentary rock Micro-mechanism Strength parameters Variability with depth Mineral composition and porosity
ISSN号	1866-7511
DOI	10.1007/s12517-020-05757-1
英文摘要	The aim of this study is to correlate the mechanical properties with rock burial depth. For this purpose, a series of sandstone specimens with burial depth varying from 460 to 900 m were collected from the same rock stratum in six coal mines of Huainan coalfield, China. Experimental results indicate that rock mechanical parameters (including tensile strength, uniaxial compressive strength (UCS), elastic modulus, cohesion, and internal friction angle) increase as the specimen burial depth increases. Empirical models describing the relationships between mechanical parameters and burial depth were established. Furthermore, the micro-mechanism behind the effect of burial depth on strength was investigated via XRD and SEM. The results show that a deeper burial depth is associated with a higher quartz content and a lower porosity. This is caused both by an increased effective stress and by temperature and is related to the secondary diagenesis process, which can result in increase in UCS and tensile strength. Finally, the empirical models were validated by four specimens with different burial depths.
资助项目	National Nature Science Foundation of China[41602324] ; National Nature Science Foundation of China[51774267] ; Natural Science Foundation of Hubei Province[2019CFB535] ; China Scholarship Council[201804910219]
WOS研究方向	Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000561031500004
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24715]
专题	中科院武汉岩土力学所
通讯作者	Liu, Xuewei
作者单位	1.Wuhan Univ, Sch Civil Engn, Key Lab Safety Geotech & Struct Engn Hubei Prov, Wuhan, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 3.Monash Univ, Dept Civil Engn, Clayton, Vic, Australia
推荐引用方式 GB/T 7714	Liu, Xuewei,Liu, Quansheng,Kang, Yongshui,et al. Investigation on relationship of the burial depth and mechanical properties for sedimentary rock[J]. ARABIAN JOURNAL OF GEOSCIENCES,2020,13(16):9.
APA	Liu, Xuewei,Liu, Quansheng,Kang, Yongshui,&Liu, Bin.(2020).Investigation on relationship of the burial depth and mechanical properties for sedimentary rock.ARABIAN JOURNAL OF GEOSCIENCES,13(16),9.
MLA	Liu, Xuewei,et al."Investigation on relationship of the burial depth and mechanical properties for sedimentary rock".ARABIAN JOURNAL OF GEOSCIENCES 13.16(2020):9.