JNTU Kakinada B-Tech 4-2 GROUND WATER DEVELOPMENT AND MANAGEMENT R13 April 2018 Question Paper

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
GROUND WATER DEVELOPMENT AND MANAGEMENT (Civil Engineering)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) Discuss in detail about the leaky aquifers. [3]
b) Under what circumstances a radial collector well can be most advantageously
used?
[4]
c) Write short notes on well completion and well maintenance. [4]
d) What are the measures to control sea water intrusion? [3]
e) Distinguish between geophysical logging and resistivity logging. [4]
f) Write short notes on basin management by conjunctive use. [4]

PART ?B (3×16 = 48 Marks)2. a) What are different types of aquifers? Draw neat sketches and explain [8]
b) Explain non equilibrium equation developed by ?Theis? and also explain the
solution for the same.
[8]

3. a) Find the diameter of tube well made in a confined aquifer for the following data
Yield from the well =0.2 cubic m /sec
Radius of Influence =250m
Coefficient of Permeability= 56m/day
Drawdown=5m; Thickness of aquifer=25m

[10]
b) What are well screens? How do you decide length and slot size. [6]

4. Write short notes on following methods of well development
a) Mechanical surging using compressed air b) High velocity jetting of water
c) Over pumping and back washing d) Dispersing agents

[16]

5. a) Explain in detail Concept of artificial recharge of groundwater. [8]
b) Explain the Gayben?Herzberg relation for saline water intrusion [8]

6. a) Explain with the help of neat sketches, giving relevant equation: Electrical
Resistivity method on the ground surface.
[8]
b) Explain important features of aerial photogrammetry in ground water
exploration.
[8]

7. a) Discuss the basic principles of groundwater modeling. [8]
b) Write short notes on (i) Analog models (ii) digital models. [8]
Code No: RT42012D
Set No. 1
R13
1 of 1