A circular tunnel with diameter of 14 m is going to be built in a rock mass. The calculations shows that the rock mass around tunnel will behave plastically. If the pressure around the tunnel is p = 22 MPa and the support pressure is p; = 90 kPa, and the uniaxial compressive strength 1 of the rock is 30 MPa, determine the radius of plastic zone (R) and the area of the plastic zone? Qj25°, Sj = 0, p = 44°, 8° = 45 + 9°/2

A circular tunnel with diameter of 14 m is going to be built in a rock mass. The calculations shows that the rock mass around tunnel will behave plastically. If the pressure around the tunnel is p = 22 MPa and the support pressure is p; = 90 kPa, and the uniaxial compressive strength 1 of the rock is 30 MPa, determine the radius of plastic zone (R) and the area of the plastic zone? Qj25°, Sj = 0, p = 44°, 8° = 45 + 9°/2

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Lateral Earth Pressure

Section: Chapter Questions

Problem 16.3P: The soil profile at a site is shown Figure P16.3. Find the total horizontal normal stresses at A and...

See similar textbooks

Similar questions

Due to the application of line loads q1 and q2, the vertical stress increase, ∆?? , at point A is 42 kN/m2 . Determine
A strip load of q =53 kN/m^3 is applied over a width B =11m. Determine the increase in vertical stress in kPa at point A located z = 4.6 m below the surface. x = 8.2m
Refer to Figure 10.47. A exible rectangular area is subjected to a uniformly distributed load of q 5 330 kN/m2. Determine the increase in vertical stress, Dz, at a depth of z 5 6 m under points A, B, and C .details about me sending through pictures
Point loads of magnitude 9, 18, and 27 kN act at A, B, and C, respectively(Figure 6.27). Determine the increase in vertical stress at a depth of 3 mbelow point D. Using Westergaard solution. Use μs = 0.4.
Refer to Figure 10.47. A flexible rectangular area is subjected to a uniformly distributed load of q = 330 kN/m2 . Determine the increase in vertical stress, Δσz , at a depth of z = 6 m under points A, B, and C
Refer to Figure P6.3. Determine the vertical stress increase Δσ at point A with the values q1 = 90 kN/m, q2 = 325 kN/m, x1 = 4 m, x2 = 2.5 m, and z = 3 m.
Using Boussinesq’s Equation determine the vertical stress increase ΔϬz, at point C at a depth 3.0 meters , if the point loads at A,B and D are 200 KN, 400KN and 600KN respectively. ΔϬzC =_____________KN/m2.
A flexible circular area of radius 3 m is uniformly loaded by q = 300 kN/m2. Determine the increase in vertical stress at the center of the circle, 3m deep.
A masonry dam (sp.gr. = 2.4) of trapezoidal cross-section is 20 m high. It has a thickness of 2 m at the top and 14 m at the bottomas shown in the figure.Coef. of friction under the foundation is 0.80 and assuming there is hydrostatic upliftthat varies linearly from one-half the hydrostatic head at the upstream edgeof the dam to zero at the downstream edge.Determine
The soil stress state is shown in the figure, σx = 10 kN/m2, σy = 50 kN/m2, τxy = -10 kN/m2:(1) Please use Mohr circle to draw the soil stress state(2) Calculate the maximum principal stress σ1 and the minimum principal stress σ3(3) Please find the (pole) position(4) What is the angle of intersection between the maximum principal stress surface and the horizontal plane?
The soil profile at a site is shown Figure P16.3. Find the total horizontal normal stresses at A and B, assuming at-rest conditions.
The circular flexible area uniformly loaded (q=320KN/m^2). Determine the change in vertical stress: (a) at point A. (b) at a point 2m below point A