红层软岩崩解性室内试验研究

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Abstract Taking red-bed soft rock along Tangkou—Tunxi section of Tongling—Huangshan expressway for example，according to the characteristics of softening and slaking with water，two representative rock samples (sandstone and mudstone) along the expressway are chosen to perform laboratory tests of slaking；and changes in grain contents of rock samples in slaking process are analyzed. On this basis，the comparative analysis of slaking characteristics of those representative samples is made；and the slaking characteristics of those samples are divided into four grades，i.e. strong slaking，medium slaking，feeble slaking and nonslaking. The results indicate that the types of red-bed soft rock and its cement，and the content of clay mineral are the main inner determinants of slaking of red-bed soft rock；the slaking characteristic gradually decreases as the grain diameter of slaking substance reduces；in order to obviously reflect the rate and degree of slaking of those samples，changes in grain contents of slaking substances greater than 5 mm and less than 0.25 mm should be selected as the evaluation objects. At last，thorough study of slaking mechanism of red-bed soft rock is made.

Key words： rock mechanics red-bed soft rock slaking characteristics

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	Articles by authors
	WU Daoxiang1
	2
	LIU Hongjie1
	WANG Guoqiang1

Cite this article:

WU Daoxiang1,2,LIU Hongjie1, et al. laboratory Experimental study of slaking characteristics of red-bed soft rock[J]. , 2010, 29(S2): 4173-4179.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/4173

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