地下水源热泵回灌非饱和渗流淤堵分析

doi:10.13722/j.cnki.jrme.2020.0727

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Abstract

At present，analysis of recharge clogging focuses on saturated seepage，rather than unsaturated seepage which is discussed in this paper. In view of the difficult problem of water source heat pump pressure recharge in Wuhan area，using the unsaturated soil VG model and combined with relevant pumping recharge examples，the saturation of soils under different pressures is evaluated，and the change of the amount of pumped r is analyzed. It is pointed out that the pressure recharge will increase the involvement of gas phase factors and，to a certain extent，results in unsaturated seepage. Gas phase blockage maybe further causes unsaturated blockage. In addition，numerical simulation using FLAC3D is carried out，the pore pressure fields of pressure recharge and unsaturated seepage are compared. The change of the pore pressure field during the formation of unsaturated blockage is analyzed，and the area of unsaturated seepage around the back irrigation well is derived. Finally，different measures for the removal of siltation are proposed in the front and later stages，and new ideas are put forward for the study of segment blockage.

Key words： soil mechanics water source heat pump pressure recharge unsaturated seepage intake pressure FLAC3D

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	Articles by authors
	PAN Ding1
	TANG Hong1
	LIU Jun2

Cite this article:

PAN Ding1,TANG Hong1,LIU Jun2. Analysis of unsaturated seepage siltation of groundwater source heat pump recharge[J]. , 2021, 40(4): 842-850.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0727 OR http://rockmech.whrsm.ac.cn/EN/Y2021/V40/I4/842

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