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Advanced Engineering Geology With Rock Mechanics (Elective II) (April 2010)

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Total No. of Questions : 6] [Total No. of Pages : 3 [3764]-118 P1436 B.E. (Civil) ADVANCED ENGINEERING GEOLOGY WITH ROCK MECHANICS (2003 Course) (Elective - II) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates : 1) Answers to the two sections should be written in separate books. 2) 3) Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. 4) All questions are compulsory. SECTION - I Q1) Write notes on : a) Pinching and bulging of dykes. [4] b) Engineering significance of rocks of Dharwarian system occurring in Maharashtra state. [9] c) Regional distribution of Deccan Trap Basalt. [5] OR a) Engineering significance of Kaladjis and Vindhyan rocks of Maharashtra state. [8] b) Criteria for demarcation of flows in Deccan Trap Basalt. [6] c) Field characters of fractures. [4] Q2) a) Tail channel erosion in Ghod dam area. [4] b) Engineering significance of fractures from dam foundation point of view. [7] c) Engineering significance of Tachylytic basalts. [5] OR a) Discuss how location of spillway is decided on geological grounds. Add a note on case histories due to columnar basalt & volcanic breccias. [10] P.T.O. b) What will happen if reservoir is located on laterite and jointed quartzite? Mention case histories. [6] Q3) a) R.S.R. System of classification of rock masses. [9] b) Describe any two physical properties of rock masses. [4] c) Define rock mechanics. [3] OR a) General R.M.R. value of Compact Basalt. [6] b) Compressive and shear strengths of rock masses. [6] c) Electrical resistivity method. [4] SECTION - II Q4) a) What problems may have to be faced while tunnelling through compact basalt and volcanic breccia with Red Tachylytic Basaltic (RTB) matrix occurring between 15 m. above the crown and 5 m. below the invert level? What treatment will have to be given? [12] b) Location and depth of drill holes to be taken for bridge foundation.[6] OR Write notes on the following : a) A tunnel associated with dyke/dykes. [6] b) Tunnelling through amygdaloidal basalt. Give example. [6] c) Treatment to be given to a dyke occurring below the foundation of a bridge pier. [6] Q5) Discuss in brief the geological process of soil formation. State the characters of alluvium of Deccan Trap rivers and discuss the suitability of residual soils and alluvium in earth dam activity. [16] OR Write notes on the following : a) Deep drilled wells. [4] b) Chances of getting groundwater along with fractures. [4] c) Success of percolation tanks in Region 1. d) Availability of natural sand in Deccan Trap area. [4] [4] [3764]-118 -2- Q6) Write notes on the following : a) Amygdaloidal basalt as a construction material for rubble for masonry. Discuss objections and facts giving examples. [8] b) Engineering significance of fault / faults in major civil engineering works as dams and tunnels. Give example. [8] OR a) Define with a neat figure focus, epicentre and isoseismal lines of an earthquake. [8] b) Explain giant phenocryst basalt as a construction material. [4] c) Write a note on foundation of monumental buildings. [4] rrrr [3764]-118 -3-

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Additional Info : April 2010 Examination - Advanced Engineering Geology with Rock Mechanics (Elective II) (2003 Course)
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