Experimental Study on Influence of Chemical Corrosion on Mechanical Property of Fissured Granite

doi:10.1155/2021/6649824

	Experimental Study on Influence of Chemical Corrosion on Mechanical Property of Fissured Granite
	Zhang, Fan 1; He, Tao 1; JunjieKang 1; Hu, Dawei 2
刊名	GEOFLUIDS
	2021-03-12
卷号	2021 页码:14
ISSN号	1468-8115
DOI	10.1155/2021/6649824
英文摘要	The effect of chemical corrosion and natural joints on the damage characteristics and strength of rock masses is highly important for the construction of rock engineering and energy extraction. Therefore, the intact granite is processed into prefabricated fissured granite specimens with a fissure angle of 0 degrees, 30 degrees, and 45 degrees. Chemical corrosion tests are then performed on the prefabricated fissured granites. The pH of the solution gradually becomes neutral; the mass loss of the granite specimens and the mineral compositions of the fissure surface are measured and analyzed. The scanning electron microscopy (SEM) and uniaxial compression tests are performed on the granite specimens after chemical corrosion. After chemical corrosion, the surface of the fissure becomes loose. The various mineral components of the specimens have been changed to different degrees or converted into other mineral components. The peak strength and elastic modulus of the prefabricated fissured granites with the three fissure angles present a clear decrease, as the time of chemical corrosion increases. The stress intensity factors at the fissured tip are also analyzed. The stress intensity factors of the specimens with a fissure angle of 0 degrees, 30% and 45 degrees decrease from 0.017, 0.35, and 0.84 to 0.013, 0.30, and 0.74 MPa.m(1/2), respectively, as the time of the chemical corrosion increases. And the chemical corrosion has the largest effect on the intensity factors of the specimens with a fissure angle of 45 degrees among the three angles. These experimental results could improve the understanding of the long-term stability of underground engineering in the multifield coupling environment.
资助项目	National Key Research and Development Program of China[2018YFC0809600] ; National Key Research and Development Program of China[2018YFC0809601] ; Natural Science Foundation of China[51979100] ; Natural Science Foundation of China[51779252] ; Major Technological Innovation Projects of Hubei[2017AAA128]
WOS研究方向	Geochemistry & Geophysics ; Geology
语种	英语
出版者	WILEY-HINDAWI
WOS记录号	WOS:000631888500002
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25966]
专题	中科院武汉岩土力学所
通讯作者	Hu, Dawei
作者单位	1.Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Wuhan 430068, Peoples R China 2.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	Zhang, Fan,He, Tao,JunjieKang,et al. Experimental Study on Influence of Chemical Corrosion on Mechanical Property of Fissured Granite[J]. GEOFLUIDS,2021,2021:14.
APA	Zhang, Fan,He, Tao,JunjieKang,&Hu, Dawei.(2021).Experimental Study on Influence of Chemical Corrosion on Mechanical Property of Fissured Granite.GEOFLUIDS,2021,14.
MLA	Zhang, Fan,et al."Experimental Study on Influence of Chemical Corrosion on Mechanical Property of Fissured Granite".GEOFLUIDS 2021(2021):14.