scholarly journals Estimated subsidence in the Chino-Riverside and Bunker Hill-Yucaipa areas in Southern California for a postulated water-level lowering, 1965-2015

1971 ◽  
Author(s):  
Ben Elder Lofgren
Keyword(s):  
Water Level ◽  
Southern California ◽  
Bunker Hill ◽  
Level Lowering

scholarly journals Assessment of impacts of utilization on water resources in the basin of trans-boundary Red river system

2020 ◽  
Vol 19 (4) ◽  
pp. 497-505
Author(s):  
Do Huy Cuong ◽  
Nguyen Lap Dan ◽  
Bui Thi Bao Anh ◽  
Nguyen Thi Nhan ◽  
Nguyen Xuan Tung ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Level ◽  
Water Use ◽  
River System ◽  
The State ◽  
Red River ◽  
Level Lowering

The Red river system is the large trans-boundary river system, there has been no united system of hydrology stations as well as integrated plan for the water use and management in the whole basin. The trend of water resources change in the Red river system basin has been assessed on the basic of statistic analyses of data observed during the studies, especially in the time when the exploitation of water resources has been intensified for the multisectoral development. This paper shows some of the results from considerations of the water use in the highlands that is influential in water resources in the Red river system basin and the planned reservoirs which are built in the basin of Red river system. The results include the assessment of the state and trend of water resources in the Red river system basin, the trend of water level lowering in the lowlands and its impacts.

scholarly journals Full-scale model study on variations of soil stress in geosynthetic-reinforced pile-supported track bed with water level change and cyclic loading

2019 ◽  
Vol 56 (1) ◽  
pp. 60-68 ◽  
Author(s):  
Han-Lin Wang ◽  
Ren-Peng Chen ◽  
Wei Cheng ◽  
Shuai Qi ◽  
Yu-Jun Cui
Keyword(s):  
Cyclic Loading ◽  
Water Level ◽  
High Water ◽  
Scale Model ◽  
Soil Arching ◽  
Arching Effect ◽  
Soil Arching Effect ◽  
Soil Stress ◽  
Pile Cap ◽  
Level Lowering

This study presents a full-scale model investigation on variations of soil stress in a geosynthetic-reinforced pile-supported track bed at various water levels and loading cycles, with four testing procedures: water level rising, cyclic loading at high water level, water level lowering, and cyclic loading at low water level. The soil arching effect was revealed, characterized by higher stress above the pile cap. With the water level rising and loading cycles increasing at high water level, this effect becomes more pronounced, until a peak value of dynamic stress concentration ratio is reached. The stable state of soil arching is obtained earlier near the crown of soil arching, but this arching effect develops more significantly at the foot of soil arching. With the water level lowering and loading at low water level, the soil arching effect remains steady, with slightly changed dynamic stresses in the track bed. The geogrid shows a significant impact on the load transfer mechanism for the quasi-static stress: the quasi-static pile-cap stress presents higher values below the geogrid, whereas the opposite trend is observed for the water-bag (subsoil) area. Nevertheless, this mechanism is not obvious with respect to the dynamic stress, with the values showing no distinct difference above and below the geogrid.

Sign in / Sign up

Export Citation Format

Share Document