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

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Total No. of Questions : 6] [Total No. of Pages : 3 P1029 [3864]-118 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) Neat diagrams must be drawn wherever necessary. 3) Figures to the right indicate full marks. 4) All questions are compulsory. SECTION - I Q1) Write notes on : a) Engineering significance of older secondary rocks occurring in Maharashtra State. [9] b) Topographical expression of dykes. [4] c) Flow Groups. [5] OR Write in brief on : a) Varieties of Basalts. [4] b) Field characters of fractures. [5] c) Engineering significance of older metamorphic rocks occurring in Maharashtra State. [9] Q2) a) b) Discuss in detail, the geological conditions leading to Tail Channel Erosion in Deccan Trap area. Mention case histories due to i) Columnar Basalt. ii) Volcanic Breccia. [9] Engineering significance of dykes from dam foundation point of view. Give case histories. [7] P.T.O. OR a) b) Q3) a) b) a) b) c) Discuss any two case histories of dam sites where economy has been achieved by interpreting correctly the local geological conditions in Deccan Trap area. [8] Engineering significance and origin of Tachylytic Basalts. [8] Explain in detail Bieniawski s Geomechanical classification. [12] Define Rock mechanics. List only physical properties of rock masses. [4] OR Describe Q system classification of rock masses. General RMR value of Compact Basalt. Methods of Geophysical survey. [6] [6] [4] SECTION - II Q4) a) b) What precautions will have to be taken while tunnelling through volcanic breccias and amygdaloidal basalt? Give case histories. [12] What should be minimum depth of drilling for bridge foundation investigations? [6] OR a) b) What are fractures? Discuss their engineering significance from tunnelling point of view with case histories. [12] Explain importance of subsurface investigations for foundation of bridges. [6] Q5) Give detailed account of water bearing characters of deccan trap rocks.[16] OR Write notes on the following : a) Characters and engineering significance of older alluvium. b) Influence of climate on soil formation. c) Granular disintigration. [3864]-118 2 [8] [4] [4] Q6) Write notes on the following : a) Will dam building activity cause a major earthquake. [8] b) Availability of natural sand as construction material in Deccan Trap area. [4] c) Problems with open excavations in city areas. [4] OR Write notes on the following : a) Giant phenocryst basalt as a construction material. b) Foundation of monumental buildings. c) Active faults. d) Fault zone treatment. vvvv [3864]-118 3 [4] [4] [4] [4]

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Additional Info : 2003 Course
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