饱和砂层中颗粒迁移特性试验研究：温度效应

doi:10.13722/j.cnki.jrme.2019.0143

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Abstract In order to study the effect of temperature on the particles transport in saturated sand，a self-developed sand layer transportation，deposition testing system was adopted，and two kinds of tests(i.e.，transport tests of particles in porous medium under different temperatures，and transport tests of particles in porous medium under variational temperatures) were conducted. Four size compositions and four typical temperatures(i.e.，5 ℃，15 ℃，25 ℃ and 35 ℃) were adopted in our study. The results shown that，when the flow rate is constant，the peak of relative concentration will decrease with the temperature increases，while the pore volume at the peak of relative concentration will increase. Meanwhile，the peak of relative concentration will decrease with the flow rate increases，while the pore volume at the peak of relative concentration will increase. The change of temperature can affect the process of particles transport in porous medium observably. Compared to the contrast group，the relative concentration and the concentration of particles will decrease when the temperature increases，and the falling range will increase as the change of temperature get earlier. We also find a hysteresis phenomenon in the breakthrough curves when temperature changes，and the smaller particles are more sensitive to the change of temperature. Water viscosity，absorption，kinetic energy of particles and surface potential can all affect the transport process of particles under the effect of temperature，while the main controlling factor will change as the test condition changes.

Key words： soil mechanics water source heat pump(GSHP) suspended particle saturated sand transportation deposition temperature effect

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	Articles by authors
	CUI Xianze1
	2
	FAN Yong1
	WANG Hongxing2
	HUANG Shibing3

Cite this article:

CUI Xianze1,2,FAN Yong1, et al. Experimental research on the transport characteristics of particles in saturated sand：temperature effect[J]. , 2019, 38(S2): 3726-3734.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0143 OR https://rockmech.whrsm.ac.cn/EN/Y2019/V38/IS2/3726

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