Analysis on the Gravel Stratum Deformation by Dewatering

2007 ◽  
Vol 353-358 ◽  
pp. 3022-3025
Author(s):  
Wen Zhao ◽  
Yan Xu ◽  
Hai Xia Sun
Keyword(s):  
Particle Size ◽  
Groundwater Level ◽  
Large Particle ◽  
Ground Deformation ◽  
Dynamic Balance ◽  
Shallow Groundwater ◽  
Large Particle Size ◽  
Stress Deformation ◽  
Stratum Deformation ◽  
Shallow Groundwater Level

Large particle-size, shallow groundwater level, and large permeate coefficient are the characteristics of gravel stratum, which may results in large ground deformation. Ground deformation depends on several factors. Using the RFPA2D-Flow software exploited by the Center for Rock Instability and Seismic Research of Northeastern University (CRISR), the seepage-stress-deformation coupling rules of soil, which are influenced by different soil distributing, drawdown, enclosure and excavating, were analyzed, and the deformation of gravel in the dynamic balance due to the interaction between seepage and stress is studied.

Hevea Latex of Large Particle Size

1939 ◽  
Vol 31 (12) ◽  
pp. 1509-1512 ◽  
Author(s):  
J. McGavack
Keyword(s):  
Particle Size ◽  
Large Particle ◽  
Large Particle Size

scholarly journals Spatial variability of shallow groundwater level in the Northern Kathmandu Valley

2018 ◽  
Vol 55 (1) ◽  
pp. 45-54
Author(s):  
Manish Shrestha ◽  
Naresh Kazi Tamrakar
Keyword(s):  
Groundwater Level ◽  
Shallow Groundwater ◽  
Soil Surface ◽  
Northern Region ◽  
Dry Season ◽  
Kathmandu Valley ◽  
Wet Season ◽  
Geological Material ◽  
Groundwater Levels ◽  
Shallow Groundwater Level

Groundwater is the water which is present in pore spaces and in the fractures of the geological materials beneath earth surface. Water is incompressible substance and presence of small amount of water in geological material modifies the behavior of geological material under stresses. Determination of engineering behavior of the geological material is almost impossible skipping the role of water. The objective of this study was to map and evaluate shallow groundwater level of the northern Kathmandu Valley covering main rivers such as the Bagmati River, Bishnumati River, Dhobi Khola and the Manahara Khola. These rivers flow from the North to the South across the sand rich sediment zone. Static groundwater levels of 239 wells were measured from different locations of the study area in April/March 2017 (Dry Season) and in August 2017 (Wet Season). Shallow groundwater level was measured from soil surface to water level using well water depth logger (Qin and Li, 1998). The result showed that groundwater level ranged from 0.6 m to 12.5 m in dry season and 0.1 m to 13 m in wet season. The groundwater level increased by average of 34.68% (n = 235) as compared to that in dry season. Increase in the groundwater level suggests recharge of groundwater in wet season of the study area. The flow pattern of groundwater levels from the study shows flow of shallow groundwater towards the major rivers of that particular river watershed. As a consequence, seepage flow and piping erosion is likely along the riverbank slopes. Increase in recharge of groundwater during wet season exhibits that the northern region of the Kathmandu Valley is potential for groundwater recharge and can be used to manage water for the dry period.

Microwave-assisted removal of sulfur in large particle size coal by bromine water

Fuel ◽  
2021 ◽  
Vol 289 ◽  
pp. 119838
Author(s):  
Xiaogang Mu ◽  
Jinfang Liu ◽  
Fei Gao ◽  
Cunbao Deng ◽  
Zhixin Jin ◽  
...  
Keyword(s):  
Particle Size ◽  
Large Particle ◽  
Large Particle Size ◽  
Bromine Water ◽  
Microwave Assisted

Direct synthesis of zeolite Y with large particle size

2001 ◽  
Vol 3 (7) ◽  
pp. 773-780 ◽  
Author(s):  
Samia Ferchiche ◽  
Juliusz Warzywoda ◽  
Albert Sacco
Keyword(s):  
Particle Size ◽  
Large Particle ◽  
Zeolite Y ◽  
Direct Synthesis ◽  
Large Particle Size
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