Find the flow rate in m'/sec/m at right angles to the cross section shown through the permeable soil layer. Given: H= 5 m, H₁ -2.8 m, h = 3.1 m, L=60 m, a=5°, k = 0.05 cm/sec. Note that water cannot flow through an impervious layer. H Direction of flow Impervious layer
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- 29. Soil in a field has three layers. Each has a thickness of 3m, 4m, and 3m, from top layer to bottom layer. The hydraulic conductivity of each layer is 0.0043cm/s, 0.0072cm/s, and 0.0018cm/s, respectively. Calculate the effective horizontal hydraulic conductivity.A sand layer of the cross-sectional area shown in Fig. ?-b (page 2) has been determined to exist for a 500-m length of the levee. The hydraulic conductivity of the sand layer is 2.3 m/day. Determine the quantity of water which flows into the ditch in m3/hr.hydrology engineering Q.2. The formation of length 6.4km between two stream A and B IS made up of two layers, the bottom layer is previous with a thickness of 8m and hydraulic conductivity of 36m/day .the upper layer is impervious .find the discharge from stream A to stream B if the depth of water in them are 16m and 13.5m respectively .
- CALCULATION USING DARCY'S LAW An aquifer system is formed by two horizontal layers. Two piezometers were installed for monitoring, the distance between them is 885m. The upper layer (A) has a thickness of 39m and K = 1.3 x 10-5 m/s and the lower layer (B) has a thickness of 25m and K = 2.7 x 10-6 m/s. THE hydraulic load in the PZA is 60m and in the PZB it is 40m. Calculate the flow and the transmissivity of each layer.29.A confined aquifer 25.0m thick has two monitoring wells spaced 400m apart along the direction of ground water flow. The difference in water level in the wells is 3.0 m. The hydraulic conductivity is 40 m/day.The rate of flow per meter of distance perpendicular to the flow would be:Find the rate of flow in m3/sec/m through the permeable soil layer. Given: H = 5.5 m, H1 = 2 m, h = 3.5 m, S = 40 m, a = 17°, and k = 0.085 cm/sec.
- Given: velocity of flow = 0.0375 m/s coefficient =0.05 m/s porosity p =48% slope S = 3/4 The soil porosity in the area where the 46-cm diameter well is 48%, find the discharge of the groundwater. Given the coefficient =0.05 m/s and porosity p =48%, find the transmissibility (T) in m/s per unit m, if the aquifer width is 1.2 m. Given the discharge Q get in Question #1, transmissibility T in Question#2, slope S = 3/4; find the aquifer width X.An impervious layer underlies 4 layers of permeable soil. The thickness and the coefficient of permeability each layer from top to bottom are: Evaluate the equivalent horizontal coefficient of permeability of the deposit in cm/sec. Evaluate the discharge of the aquifer in m3/day if the hydraulic gradient for the soil formation is 0.70.The initial infiltration capacity of the soil is 0.0386cm per min. the time constant as 10.18 per min and the final capacity of soil for infiltration is 0.0683 cm per hour. Use Hortons equation to solve for ft in mm per hour at 3 min
- Calculate the transmissivity of the confined aquifer if the flow is along the strata consist of a 3 layers. The upper layer consist of gravel of 400 cm having hydraulic conductivity of 2.0 cm/sec. The middle layer consists of the fine sand of thickness 300 cm, having hydraulic conductivity of 0.002 cm/sec. The bottom layer consists of coarse sand of thickness 400 cm, having hydraulic conductivity of 0.01 cm/sec.Find the rate of flow in m^3/sec/m (at right angles to the cross-section shown in Figure 7.33) through the permeable soil layer. Given: H 4 m, H1 2 m, h 2.75 m, S 30 m, a 14°, and k 0.075 cm/sec.Seepage around a retaining wall is shown in the figure below. The hydraulic conductivity of the sand is 1.8 x 10-5 cm/s. The retaining wall is 20 m long. Determine the quantity of seepage across the entire wall per day