Effects of mud slurry on flow resistance of cohesionless coarse particles
文献类型：期刊论文
| 作者 | Yang, Hongjuan1,2 ; Wei, Fangqiang2; Hu, Kaiheng2; Lyu, Juan2
|
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 310页码:1-7 |
| 关键词 | Mud slurry Cohesionless particles Excess pore fluid pressure Flow resistance Rheology |
| ISSN号 | 0032-5910 |
| 通讯作者 | Hongjuan Yang |
| 英文摘要 | Laboratory experiments were performed to investigate the effect of mud slurry on the flow resistance of cohesionless particles in debris flow. For one thing, natural angles Of repose were measured for the gravel materials resting in air, in water, and in mud slurry separately. For another, rheological tests Were taken using a vane rheometer to measure the torque-time response of sand particles Within mud slurries of varying solid concentrations both at low and high rotational speeds. The stable torque obtained at the low rotational rate, which represents flow resistance primarily caused by particle contact friction, was nondimensionalized to compare the internal friction coefficient in each case. Furthermore, flow resistance of sand particles within one of the mud slurries was measured over a wide range of rotational speeds to compare with that in the dry system. It was found that the mud slurry has no significant effects on the frictional coefficient of cohesionless coarse particles. However, the mud slurry tends to decrease flow resistance of the particles, with the effect being more significant at higher rotational speeds or for more concentrated slurries. This derives from excess pore fluid pressure, which is easier to maintain at higher shear rates or within more cohesive slurries. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | DEBRIS FLOWS ; INTERSTITIAL FLUID ; GRANULAR FLOWS ; SUSPENSIONS ; AVALANCHE ; STRESS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000395211800001 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/18409]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Hongjuan,Wei, Fangqiang,Hu, Kaiheng,et al. Effects of mud slurry on flow resistance of cohesionless coarse particles[J]. POWDER TECHNOLOGY,2017,310:1-7. |
| APA | Yang, Hongjuan,Wei, Fangqiang,Hu, Kaiheng,&Lyu, Juan.(2017).Effects of mud slurry on flow resistance of cohesionless coarse particles.POWDER TECHNOLOGY,310,1-7. |
| MLA | Yang, Hongjuan,et al."Effects of mud slurry on flow resistance of cohesionless coarse particles".POWDER TECHNOLOGY 310(2017):1-7. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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