Water Supply: The Present Practice of Sinking and Boring Wells, with Geological Considerations and Examples of Wells ExecutedSpon, 1875 - 217 pages |
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Page 7
... hole in virtue of its tendency to place itself in equilibrium . Where the country is open and uninhabited , the water from shallow wells sunk in alluvion is generally found to be good enough and in sufficient quantity for domestic ...
... hole in virtue of its tendency to place itself in equilibrium . Where the country is open and uninhabited , the water from shallow wells sunk in alluvion is generally found to be good enough and in sufficient quantity for domestic ...
Page 9
... hole . If the permeable stratum be also overlaid by an impervious stratum , the water will be under pressure and will ascend the bore - hole to a height that will depend on the height of the points of infiltration above the bottom of ...
... hole . If the permeable stratum be also overlaid by an impervious stratum , the water will be under pressure and will ascend the bore - hole to a height that will depend on the height of the points of infiltration above the bottom of ...
Page 44
... holes , and but little tamping . The dangerous character of guncotton has hitherto prevented its adoption for ... holes from 1 to 3 inches diameter in the rock to be disrupted to receive the charge . The position of these holes is a ...
... holes , and but little tamping . The dangerous character of guncotton has hitherto prevented its adoption for ... holes from 1 to 3 inches diameter in the rock to be disrupted to receive the charge . The position of these holes is a ...
Page 46
... hole for the charge may be driven parallel to the strata and in such a position as not to touch the planes which separate them . This hole should never be driven in the direction of the line of least resistance , and when practicable ...
... hole for the charge may be driven parallel to the strata and in such a position as not to touch the planes which separate them . This hole should never be driven in the direction of the line of least resistance , and when practicable ...
Page 47
... hole , and the longer for finishing it . Often the bit on the long length is made a trifle smaller than the other to remove any chance of its not following into the hole which has been commenced . Drills and jumpers should be made of ...
... hole , and the longer for finishing it . Often the bit on the long length is made a trifle smaller than the other to remove any chance of its not following into the hole which has been commenced . Drills and jumpers should be made of ...
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Autres éditions - Tout afficher
Water Supply: The Present Practice of Sinking and Boring Wells. With ... Ernest Spon Affichage du livre entier - 1885 |
Water Supply: The Present Practice of Sinking and Boring Wells. With ... Ernest Spon Affichage du livre entier - 1885 |
Water Supply: The Present Practice of Sinking and Boring Wells, with ... Ernest Spon Affichage du livre entier - 1875 |
Expressions et termes fréquents
Banister Fletcher beds Blue Clay Boilers bore-hole boring rod boring tool boring-head bottom Brewery brick brickwork bucket Butte-aux-Cailles cast-iron chalk chisel Civil Engineers cloth CONTENTS Construction crown 8vo cuts depth Ditto Edmund Sharpe excavation feet deep feet O.D. flints foot Formulæ gallons a day gallons a minute grapnel gravel greensand Grey Hedgerley hole Hydraulic illustrated inches diameter Isometric Projection joint Keuper length lever London clay lower Lower Tertiary Machinery Marl means Mechanical Memoranda mottled clays numerous OOLITE outcrop passed Passy Pebbles pipe piston plates Pocket-Book post 8vo pump quantity Railway rainfall READING BEDS RED SAND red sandstone River rock rope royal 8vo Screw Propeller screwed second edition sewed shaft shell shown in Fig sinking Slide Steam steining stone strata stratum stroke sunk surface Surface Condensers Tables thickness tion trepan tubbing tube upper valve vertical water-bearing strata Waterworks weight wood engravings wrought-iron yield
Fréquemment cités
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