Suppose that the average vertical pillar stress is 26.7 MPa in a room and pillar mine and
Question:
Suppose that the average vertical pillar stress is 26.7 MPa in a room and pillar mine and that a joint set is present with an average bearing of N45W. If the joints obey a Mohr–Coulomb slip criterion and have a friction angle of 28◦ and a cohesion of 0.90 MPa, what range of joint dips is unsafe with respect to joint slip?
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 56% (16 reviews)
Given Average vertical stress3870 psi 267 MPa room and ...View the full answer
Answered By
David Ngaruiya
i am a smart worker who concentrates on the content according to my clients' specifications and requirements.
4.50+
7+ Reviews
19+ Question Solved
Related Book For
Question Posted:
Students also viewed these Geological Engineering questions
-
Suppose that the pillar stress is 29 MPa in a room and pillar mine and that a joint set is present with an average bearing of N45W. If the joints obey a MohrCoulomb slip criterion and have a friction...
-
Suppose that the pillar stress is 4,247 psi in a room and pillar mine and that a joint set is present with an average bearing of N45W. If the joints obey a MohrCoulomb slip criterion and have a...
-
Suppose that the average household in a state consumes 800 gallons of gasoline per year. A 20-cent gasoline tax is introduced, coupled with a $160 annual tax rebate per household. Will the household...
-
Duhail Complex averages about 15% of Bananas spoil before they can be sold. The manager purchases 200kg of bananas for 2.03QR per kilogram. What is the selling price if there is a 45% markup on the...
-
Each pulse produced by an argon-fluoride excimer laser used in PRK and LASIK ophthalmic surgery lasts only 10.0 ns but delivers an energy of 2.50 mJ. (a) What is the power produced during each pulse?...
-
Try to explain the function of DNA gyrase with a drawing.
-
The drag characteristics of an airplane are to be determined by model tests in a wind tunnel operated at an absolute pressure of \(1300 \mathrm{kPa}\). If the prototype is to cruise in standard air...
-
Steiner Corporation manufactures water skis through two processes: Molding and Packaging. In the Molding Department, fiberglass is heated and shaped into the form of a ski. In the Packaging...
-
Read each of the following scenarios. Identify the protective and risk factors for each one . Which of these risk factors are modifiable? Scenario 1 Mrs. A (32) was brought to a homeless shelter by...
-
Consider the unadjusted trial balance of Burrows Landscaping at December 31, 2023, and the related month-end adjustment data: The following adjustments need to be made on December 31 before the...
-
Suppose that entries and crosscuts are 13.7 m wide and that pillars are square and 13.7 m wide, as in Problem 6.7. Laboratory properties are the same as in Problem 6.5; depth and specific weight of...
-
Coal mine entries are driven 20 ft (6.1 m) wide on strike at a depth of 1200 ft (366 m) in a coal seem that dips 15. Crosscuts are driven up and down dip and are also 20 ft (6.1 m) wide. The...
-
A voluntary health and welfare entity receives a gift of new furniture having a fair value of $2,100. The group then gives the furniture to needy families following a flood. How should the charity...
-
Two equal charges are situated on the x axis at 40.0 cm on either side of the origin as shown in the figure below. Location A is on the perpendicular bisector at a distance of 27.0 cm from the origin...
-
1. The following information pertains to Henry Enterprises for 2023: Cost of goods manufactured Direct labor Direct materials inventory, beginning of year Direct materials inventory, end of year...
-
Given the force between two or more points as: F= 2 x 9, (r-r) 4RE-P Point charges 125nC and -90nC are located at (2, -4, -6) and (4, 7, -3), respectively. (a) Determine the force on a 15nC point...
-
Provided below is the activities to be completed in order to accomplish a project. Activities 1-2 Duration in weeks Optimistic time Most likely time Pessimistic time 1 1-3 1-4 2-5 3-5 2 132132 4-6...
-
The car starts from rest and travels along a straight track such that it accelerates at 8 , 9 m / / s 2 2 for 1 9 seconds, and then decelerates at - 3 , 8 m / / s 2 2 until the it stops. How far has...
-
International Reporting Case Sepracor, Inc., a U.S. drug company, reported the following information in a recent annual report (amounts in thousands). The company prepares its financial statements in...
-
Describe the general ways that the revised Form 990, applicable for tax year 2008 and beyond, is different from previous versions.
-
(a) What is the change in entropy if you start with 10 coins in the 5 heads and 5 tails macrostate, toss them, and get 2 heads and 8 tails? (b) How much more likely is 5 heads and 5 tails than 2...
-
For the wire form shown, determine (a) The reactions at points A and B, (b) How the bending moment varies along the wire, and (c) the deflection of the load F. Assume that the entire energy is...
-
For the curved beam shown, F = 30 kN. The material is steel with E = 207 iGPa and G = 79 GPa. Determine the relative deflection of the applied forces. 50 40 10 Section A-A (All dimensions in...
-
For the curved beam shown, F = 30 kN. The material is steel with E = 207 GPa and G = 79 GPa. Determine the relative deflection of the applied forces. 40 50 10 Section A-A (All dimensions in...
-
What is thread affinity, and how does it influence performance in multi-core systems? What tools or techniques are available for tuning thread affinity ?
-
Management of Mittel Company wants to reduce the elapsed time from when a customer places an order to when it is shipped. It provided the following data for a recent quarter: Inspection time Wait...
-
For a language L over alphabet , we define L = {xz *y * with |x| = |y| = |2| such that ryz L}. For example, if L = {a, to, cat, math, solve, theory}, then L = {ct,thry}. Prove that if L is regular,...
Study smarter with the SolutionInn App