TEST STUDY OF PHYSICAL PROPERTIES OF SUSPENDED PARTICLES MIGRATION AND DEPOSITION IN WATER SOURCE HEAT PUMP INJECTION WELL
ZHAO Jun1，2，ZHANG Chengyuan3，LIU Quansheng3
(1. School of Civil and Architectural Engineering，Anhui University of Science and Technology，Huainan，Anhui 232001，China；
2. Jiangxi Yuzhou Vocational College of Science and Technology，College of Civil Engineering，Xinyu，Jiangxi 338029，China；
3. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China)
Abstract：For groundwater source heat pump system blocking mechanism study and development of sand blocking simulation test system，the gravel particles is used as porous media with the fly ash particles as the suspended solids. The relationship between relative concentration and pore volume of suspended particles is studied during the migration and deposition in gravel particles. The main conclusions are drawn as follows：(1) Under three different flow velocities，the migration and deposition of particles in gravel particles mainly experience three stages：increase，decrease sharply and stable stages of concentration. The overall trend is the same；and the main difference lies in different peak values of concentration. The greater the flow velocity is，the larger the peak value is；and vice versa. (2) The proposed permeability attenuation model of suspended particles is an effective tool to forecast test porosity decline caused by particles migration. (3) Through comparing theoretical analysis with test curve，it is found that tail effect did not appear in this test；and the test values are consistent with the theoretical ones.
赵 军1，2，张程远3，刘泉声3. 水源热泵回灌井悬浮颗粒运移和沉积物理特性试验模型研究[J]. 岩石力学与工程学报, 2014, 33(2): 257-263.
ZHAO Jun1，2，ZHANG Chengyuan3，LIU Quansheng3. TEST STUDY OF PHYSICAL PROPERTIES OF SUSPENDED PARTICLES MIGRATION AND DEPOSITION IN WATER SOURCE HEAT PUMP INJECTION WELL. , 2014, 33(2): 257-263.
2014, Vol. 33 
