2. How to evaluate the rock properties according to the distribution curves and give at least two coefficients of that.
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2. How to evaluate the rock properties according to the distribution curves and give at least two coefficients of that.
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- What are the six parameters of the RMR of a rock mass?A moist rock mass is characterized by the following parameters: joint water pressure is nil; the point load index 3 MPa; the joint spacing = 0.5 m; and = RQD 55%. Prepare a table of rock mass rating versus joint condition = using the terminology of Table 2.16 for the former and Table 2.13 for the latter. ( you can find the tables in goodman book about rock mechanics)reservior rock and fluid properties
- 1. Discuss the different criteria that is normally employed in the classification of metamorphic rock. (3-5 sentences or more) 2. Briefly explain the different exploration methods used to infer distribution of rocks underground from physical measurements made at the surface. (3-5 sentences or more)1. Side slopes for rock fill 1V:2H. Calculate the minimum crest width of a breakwater using B = 3*kΔ*(W/γa)1/3 . Given data: Stone weight = (8) t, Specific weight = 2,7 t/m3, Layer thickness coefficient =1,00 and Porosity percentage = 37 2. For cubed shaped stone (or concrete), determine dimension of the stone for weight: W = (10+a) t, specific weight: γa = 2,4 t/m3a. a. A moisture release curve shows the relationship between _______ and ________ for a soil. b. Draw this relationship for a sand vs. a clay using well-labeled axes. Be sure to indicate the relative scale of magnitude on axes. List the units usually associated with the X and Y variables.
- A soil profile is shown in Figure P3.2 along with the standard penetration numbers in the clay layer. Use Eqs. (3.8) and (3.9) to determine the variation of cu and OCR with depth. What is the average value of cu and OCR?A rock mass has initial unit weight equal to y and, after loosening, it assumes unit weight y,. A coefficient of loosening (n) was defined by Müller (1978) n = Y A jointed sedimentary rock mass assumes a value ofn = 0.35 after loosening and 0.08 after recompaction. Calculate the corresponding val- of y1. (y = 27 kN/m') (b) Crystalline igneous rocks like granite, gneiss, and diabase have a range of values ofn = 0,35 to 0,50 after losening and 0.08 to 0.25 after recompaction. Compute the corresponding values of the unit weight (y.)For studying rock porosity change affecting by the pressure, use Newman correlation to calculate the pore volume (isothermal) compressibility, cf, for sandstones as below (Eqn. 2.2 - which is attached). I have also attached my results for part a. I need help with part B. It is using the formula: c = -1/v * dV/dp where v = volume, c = compressibility values calculated in part a, and p is pressure. I am mostly confused on how to compute the change in volume. (a) Calculate cf for 5 different phi (porosity) = 0.02, 0.05, 0.1, 0.15, 0.2 I have already completed this portion and it is attached with the answers needed for part b highlighted in yellow in the uploaded figure. (b) Estimate dV/V for these five cases of phi (porosity), if initial reservoir is 3250 psia and the current reservoir pressure is 1500 psia.