we report engineering experiences from the critical task of relief well installation under high artesian flow conditions at the downstream toe of the karkheh earth dam, iran. due to the establishment of excessive uplift pressure at the downstream toe of the karkheh dam, installation of a series of new relief wells was considered to permanently relieve part of these pressures. the mentioned upli...

Interpolated contour maps drawn for aluminum, copper and molybdenum in downstream monitoring boreholes of water dam in Miduk Copper Complex and the values of pH, redox potential (Eh) and distance from water dam indicate different trends of variation and behavior of these three elements in downward groundwater resources. As these maps exhibit, aluminum is dominant in the most alkaline (pH = 9-11...

Stepped block protection has considerable potential as a low-cost method for the construction of chute spillways and the protection of embankments from erosion by overtopping flow. Stepped spillways are structurally stable, resistant to water loads and significantly increase the rate of energy dissipation on the spillway face thus eliminating or greatly reducing the need for a large energy diss...

Abstract Reducing the damage due to landslide dam failures requires prediction of flood hydrographs. Although progressive failure is one main modes dams, no method available. This study develops a for predicting failure. The proposed consists model and overtopping erosion model. can reproduce collapse progression from toe predict longitudinal shape reservoir water level when overflows. uses the...

Seismic methods were used to locate an impermeable water barrier (density body), constructed in front of a homogenous earth-fill dam (Prätisbach) in Eastern Styria, Austria. This detention reservoir, built in 1985/86, was constructed of locally mined materials. Key to this structures functionality is its impermeable core located within the upstream toe of the dam and parallel to the dam axis. T...

This article uses the finite element software ABAQUS to establish a three-dimensional model based on overflow dam section 12 # ~15 and surface outlet of Chushandian gravity dam. The stress displacement distribution under normal water storage level are analyzed; On this basis, modal analysis is conducted study impact dam's own conditions operation research shows that: (1) Under condition height ...

Abstract The stability evaluation of the dams subjected to seismic excitations is really very complex as earthquake response concrete gravity dam depends upon its connection joints with foundation rock. This study presents considering welded contact and friction along dam-foundation rock interface. Friction provided using elements. Two-dimensional finite element model Oued Fodda dam, located in...

The U.S. Army Corps of Engineers elevated Zoar Levee and Diversion Dam to a Dam Safety Action Class I (urgent and compelling) ranking due to seepage concerns. An accelerated program is in progress to address project deficiencies which include seepage through the levee’s glacial outwash foundation, through a fractured rock knoll beneath the levee, and through the dam’s fractured rock abutments a...