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 94
... tubbing are generally much more massive and costly than the segments of tubbing . The process of fixing the crib is as follows ; - The diameter of the shaft is made about 30 inches larger than that of the inside of the tubbing . When a ...
... tubbing are generally much more massive and costly than the segments of tubbing . The process of fixing the crib is as follows ; - The diameter of the shaft is made about 30 inches larger than that of the inside of the tubbing . When a ...
Page 95
... tubbing is then built upon it to the next wedging crib , which rests upon a bell - shaped section of rock . When the tubbing nearly reaches this crib , the rock is removed piece by piece , and the top ring of tubbing is placed close up ...
... tubbing is then built upon it to the next wedging crib , which rests upon a bell - shaped section of rock . When the tubbing nearly reaches this crib , the rock is removed piece by piece , and the top ring of tubbing is placed close up ...
Page 96
... tubbing are pro- ceeded with till the lowest feeder is reached , when a hard bed is sought for on which to fix the lowest wedg- ing crib . In all cases the water has to be pumped out before the wedging crib , which forms the foundation ...
... tubbing are pro- ceeded with till the lowest feeder is reached , when a hard bed is sought for on which to fix the lowest wedg- ing crib . In all cases the water has to be pumped out before the wedging crib , which forms the foundation ...
Page 97
... tubbing used for damming back the water is generally in segments from 1 foot to 3 feet high , and about 4 feet in length , the thickness Fig . 114 . Fig . 115 . H varying from half an inch to 3 inches . It. WELL BORING AT GREAT DEPTHS . 97.
... tubbing used for damming back the water is generally in segments from 1 foot to 3 feet high , and about 4 feet in length , the thickness Fig . 114 . Fig . 115 . H varying from half an inch to 3 inches . It. WELL BORING AT GREAT DEPTHS . 97.
Page 98
... tub- bing is fixed , usually twice with wood , and sometimes . once with iron wedges . To equalize the pres- sure of water and gas behind the different sets of tubbing , pass pipes , Figs . 115 and 116 , are sometimes used . Another ...
... tub- bing is fixed , usually twice with wood , and sometimes . once with iron wedges . To equalize the pres- sure of water and gas behind the different sets of tubbing , pass pipes , Figs . 115 and 116 , are sometimes used . Another ...
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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
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