龙游石窟砂岩在不同含水状态下的弹性波速与力学性能

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Abstract To study the impact of water environment change on weathering and damage of Longyou grottoes，the experimental research on the mechanical property and the elastic wave velocity of sandstone under different water contents is conducted. The change laws of stress-strain curve and mechanical properties such as peak stress，elastic modulus are also analyzed. The analysis results show that the water content has obvious effect on stress-strain curve and mechanical properties of sandstone：strain softening behavior weakens，peak stress and elastic modulus decreases exponentially with the increase in water content. Elastic wave velocity test results indicate that the uniaxial compressive strength is linear with elastic wave velocity，and the elastic wave velocity decreases abnormally to a very low value at the water content of about 1.5% due to expansible clay minerals. The water content has a little impact on anisotropy. Therefore，it can be concluded that dry and steady environment is of benefit to the conservation of Longyou grottoes.

Key words： rock mechanics sandstone water content mechanical property elastic wave velocity calcite

Received: 17 June 2009

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	Articles by authors
	SHAO Mingshen1
	LI li2
	LI Zuixiong3

Cite this article:

SHAO Mingshen1,LI li2,LI Zuixiong3. ELASTIC WAVE VELOCITY AND MECHANICAL PROPERTIES OF SANDSTONE UNDER DIFFERENT WATER CONTENTS AT LONGYOU GROTTOES[J]. , 2010, 29(S2): 3514-3518.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3514

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