A field investigation on the distribution characteristics of structure cracks in the Chengchao Iron Mine, China

doi:10.1007/s12517-020-5080-y

	A field investigation on the distribution characteristics of structure cracks in the Chengchao Iron Mine, China
	Deng, Yangyang 2,3; Chen, Congxin 2,3; Xia, Kaizong 2,3; Sun, Chaoyi 2,3; Chen, Shan 2,3; Zhang, Yapeng 2,3; Zheng, Xianwei 1
刊名	ARABIAN JOURNAL OF GEOSCIENCES
	2020-03-02
卷号	13 期号:5 页码:22
关键词	Metal mine Structure crack Sensitivity Stress release Rock mass zoning
ISSN号	1866-7511
DOI	10.1007/s12517-020-5080-y
英文摘要	In this study, a comprehensive assessment on the generation mechanism, distribution characteristics, and extension rules of structure cracks was conducted by in situ monitoring and field investigation in the Chengchao Iron Mine. Structure cracks are affected by many factors, e.g., surface deformation, structure strength, occurrence position, and machine vibration. They initially occur in a structure when the strength of the structure is not enough to resist the inner strain as surface deformation increases. In contrast, increases in width and length of structure crack exert stress release in the structure and thus decrease structure deformation surrounding the crack. A great ground crack may adversely aggravate structure cracking and release the stress of surrounding rock masses. In addition, micro cracks in rock masses provide favorable conditions for the generation and extension of cracks, resulting that cracks occur in shaft walls more easily and extend towards the deeper. The initial distribution of cracks is generally consistent with such micro cracks. Subsequently, cracks in deep rock masses will extend along the strike of the mined-out area as surface deformation increases. Sensibilities to cracking of structures are changed by their different strain resistances and become stronger from bolt-shotcrete shaft, bolt-shotcrete tunnel, and brick-concrete building to brick wall. Based on distribution characteristics of cracks and wave velocity in rock masses, the overlaying strata affected by underground mining can be divided into four zones: broken zone, broken transition zone, crack generation zone, and micro deformation zone.
WOS研究方向	Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000520936800002
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23742]
专题	中科院武汉岩土力学所
通讯作者	Deng, Yangyang; Xia, Kaizong
作者单位	1.Chengchao Iron Mine Wuhan Iron & Steel Min Co LTD, Ezhou 436051, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Deng, Yangyang,Chen, Congxin,Xia, Kaizong,et al. A field investigation on the distribution characteristics of structure cracks in the Chengchao Iron Mine, China[J]. ARABIAN JOURNAL OF GEOSCIENCES,2020,13(5):22.
APA	Deng, Yangyang.,Chen, Congxin.,Xia, Kaizong.,Sun, Chaoyi.,Chen, Shan.,...&Zheng, Xianwei.(2020).A field investigation on the distribution characteristics of structure cracks in the Chengchao Iron Mine, China.ARABIAN JOURNAL OF GEOSCIENCES,13(5),22.
MLA	Deng, Yangyang,et al."A field investigation on the distribution characteristics of structure cracks in the Chengchao Iron Mine, China".ARABIAN JOURNAL OF GEOSCIENCES 13.5(2020):22.