剪切位移作用下随机裂隙面渗流特性试验研究

doi:10.13722/j.cnki.jrme.2015.1343

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Abstract In order to analyze the seepage characteristics and motion laws of fracture surface in random single crack under the influence of axial compressive stress，shear stress and osmotic pressure，shear seepage stress coupling tests were carried out by using shear flow coupling test system. According to the relationship curves of shear load and tangential displacement，the relationship curves of the normal displacement and the tangential displacement acquired by the experiment，the influence of the shear load and the normal displacement on the shear load and normal displacement was summarized. The relationship curves of hydraulic opening and tangential displacement was acquired by using the cubic law and seepage quantity. According to the characteristics of the curves，the four parameters Logistic function was used to fit the curve，and a good result was achieved. Depending on that，the relationship between shearing expansive angle and stress in the process of shear flow coupling was proposed. What is more，a new method to locate the dangerous point in the shear dilatation stage which can be presented through the parameter of the function.

Key words： seepage mechanics random fracture shear hydraulic opening Logistic function

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	Articles by authors
	LEI Jinsheng
	LI Shen
	WU Zenglin
	YAO Qi
	ZENG Youwei

Cite this article:

LEI Jinsheng,LI Shen,WU Zenglin, et al. Experimental study of shear displacement effect seepage characteristics of random surface cracks[J]. , 2016, 35(S2): 3898-3905.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.1343 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS2/3898

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