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Manual On Groundwater And Well Sinking (Paperback) Loot Price: R608
Discovery Miles 6 080
Manual On Groundwater And Well Sinking (Paperback): D.V. Rao
Manual On Groundwater And Well Sinking (Paperback): D.V. Rao

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Manual On Groundwater And Well Sinking (Paperback)

D.V. Rao

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MANUAL ON GROUNDWATER AND WELL-SINKING BY D. V. RAO, B. SC., London, F. R. S. A., London, M. I. E., India. Superintending Engineer, Well-Sinking Department, HYDERABAD-DECCAN. GOVERNMENT PRINTING, HYDERABAD-DECGAN, 1947 CONTENTS. PAGE Introduction . . . . . . . . . . i CHAPTER I. Sources of groundwater . . . . . . . . 4 General considerations . . . . . . . . 4 The monsoons . . . . . . . . 4 Disposal of rainwater . . . . . . . . 5 Evaporation . . . . . . . . . 5 Runoffs . . . . . . . . . . 5 Percolation . . . . . . . . . . 6 Absorption . . . . . . . . . 6 Intake . . . . . . . . . 6 Deforestation and resultant effects . . . . . . 7 Soil erosion. A serious problem . . . . . . 7 Forests and Hoods . . . . . . . . 8 Soils and their influence on groundwater . . . 9 Rocks and their permeability . . . . . . 10 CHAPTER II. DISTRIBUTION OF UNDERGROUND WATER Saturation zone and water-table . . . . . . 1 1 Capillary fringe . . . . . . . . i r The zone of aeration . . . . . .11 Vegetation and water-table . . . . 12 Forests and water supply . . .12 Depth of water-table .. .. .. .. 13 Lower limit of groundwater . . . . . . 13 Fluctuations of the water-table .. .. . 13 Nature of underground water . . . . 14 Surface relief and groundwater conditions . . . . 15 Artesian water . . . . . 1 6 CHAPTER IJI. ROCK STRUCTURES AND WEATHERING, THEIR RELATION TO GROUNDWATER. Igneous rocks . . . . . . . . o Metamorphic rocks . . . . . . . . 20 iii IV CHAPTER IV. THE QUALITY OF WATER. PAGE Hardness . . . . . . . . . . 26 Salinity . . . . . . . . . . 26 Organic impurities . . . . . . . . 27 Purification of water . . . . . . . . 29 CHAPTER V. WATER-FINDING METHODS. Geology and physiography . . . . . . 30 Water diviningmethods . . . . . . . 30 Water-finding methods . . . . 31 OTHER INDICATIONS OF GROUNDWATER. Ground mists . . . . 33 Moist ground and seepages . . . . . 33 Coastal areas . . . . . . . 33 Groundwater at high levels and on hills . . . . 33 River valleys . . - 33 Rock talus . . . . . . .34 Plants as indicators ot groundwater . . . . . . 36 Geophysical me hods . 36 CHAPTER VI ROCKS THEIR ORIGIN, OCCURRENCE AND CLASSIFICATION. Aryan Group . . . . .38 Purana Group . . . . . . . 38 Vedic Group . . . 38 Alluvium and older alluvials . . . . . 38 Deccan Traps . . . . . . . . 38 The Gondwanas . . . . . . . . 39 The Vindhyans . . . 39 The Cuddapahs . . . . 39 The Peninsular Gneisses . . . . . . . . 39 The Dharwars . . . . . . 39 WELLS IN GRANITES AND GNEISSES. Underground water in gneisses . . . . . . 40 Study of outcrops and their influence on groundwater . 42 Dykes and their effect on groundwater . . . . 43 Effect of quartz reefs on groundwater . . . . 44 WELLS IN DHARWAR SCHISTS. SALINITY IN GNEISSES. PAGE Pink gneissic series and particularly their associated representa tives are saliferous deep seated salinity . . 46 Causes of salinity . . . . . . . . 46 Distribution of salinity . . . . . . . . 47 Soil salinity . . . . . . . . . . 49 Search for sweet water in saline areas . . . 49 Hattigudur village Shahpur Taluq . 49 Amlapur village Shahpur Taluq . . 50 Pumping and cleaning of wells . .,50 Grey series of gneisses Not saliferous 50 Talbedi village Shahpur Taluq . . .50 CHAPTER VII. THE BHIMA SERIES OF SEDIMENTARIES. Introduction . . . . . .52 Upper Bhima . 52 Middle Bhima . . . . 52 Lower Bhima . . . . . 52 Andola Taluq . . . . . . . . 53 False water-table . . . . .54 Gudur new general wellConcretions of carbonates and sul phides indicate intermittent flow . . . . 54 Safe depth to determine depth of well . . . 54 Drilled tube-wells . . - 55 Salinity and brackishness . . . . . . . . S5 Some apparent anomalies and their causes Dharshanapur village . . . . . . . . . . 55 Experiments and tests on the recuperative power of wells in shales . . . . . 56 Recuperation of shales poor at greater depths . . . 58 Junction of Deccan Traps with the shales yield better recuper ation . . . . . . . . . ...

General

Imprint: Read Books
Country of origin: United Kingdom
Release date: March 2007
First published: March 2007
Authors: D.V. Rao
Dimensions: 216 x 140 x 24mm (L x W x T)
Format: Paperback - Trade
Pages: 428
ISBN-13: 978-1-4067-3353-2
Barcode: 9781406733532
Categories: Promotions
Books > Science & Mathematics > Science: general issues
Books > Science & Mathematics > Science: general issues > General
LSN: 1-4067-3353-9

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