-- Roll No. ...................... Total No. of Questions: 08]

[Total No. of Pages: 02

M.Tech. SUB SURFACE OF GEOPHYSICAL EXPLORATION SUBJECT CODE:

CESE

- 10.

Paper ID : [EI008] [Note: Please fill subject code and paper ID on OMR]

Maximum Marks:

Time: 03 Hours

100

Instruction to Candidates:

Q1)

1)

Attempt any Five questions.

2)

All questions carry equal marks.

(a) Discuss various factors that govern the sub soil exploration, bringing out the guiding principles for deciding the location of bore holes in an engineering project. (b) Draw a diagram to show the set up of wash Boring.

Q2)

(a) Differentiate between disturbed, undisturbed and non representative samples. Discuss the uses to which such samples can be put to respecti vel y. ,

.

(b) Mention different methods of.ground water observation. Q3)

(a) Describe the tests that you will employ to determine the percentage of cement and other conditions for mixing and compacting to be used for cement stabilization of a given soil. ,

(b) Write how the test results of SPT are used in determination of modulus of deformation. Q4)

(a) Describe pumping out methods for determination of the co-efficient of permeability in the field. What are their advantages and disadvantages? . What are Dupuits' 'assumptions.

.

(b) Why there is a need for speedy moisture tester in the field? How moisture is measured in the field using speedy moisture tester?

M-1239 [1859]

P.T.o.

Q5)

Write short notes on any two:-

t ".

(a) Preparation of bore log.

(b) Tunnels and Drifts. . (c) Large shear box test. Q6)

-.

(a) Compare Electrical Resistivity methods and seismic methods, highlighting short comings of each in detail. (b) Discuss the physical

and. chemical

changes which take place in

stabilization of soil by lime. Q7)

.

(a) Explain the various corrections to be employed for SPT test. (b) How is the data from dynamic cone penetration test useful?

Q8)

(a) Describe large shear box test with the help of a sketch. (b) . Write short note on wave propagation test. (c) Mention any two indirect methods to determine permeability. -.;~~~

M-1239

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