Self-help wells/
KOEGEL, R.G.
Self-help wells/ R. G. KOEGEL - Rome : FAO, 1977 - 73 p. ; ili. - FAO IRRIGATION AND DRAINAGE PAPER NO.30 .
1. Introduction. 2. Groundwater occurrence. 3. Comparison of large and small diameter wells. 4. Small diameter wells. 4.1 Bored or augured wells. 4.2 Driven wells. 4.3 Jetted wells. 4.4 Hydraulic percussion. 4.5 Percussion. 4.6 Hydraulic rotary. 4.7 Casing and screens. 4.8 Methods for obtaining vertical reciprocating motion. 4.9 Rope. 4.10 Well development and finishing. 4.11 Problem solving. 5. Large diameter wells. 5.1 Rationale for construction of large diameter wells. 5.2 Dimensions for large diameter wells. 5.3 Excavation. 5.4 Lining the excavation. 5.5 Equipment for raising and lowering materials. 5.6 Moulds. 5.7 Concrete work. 5.8 Safety. 5.9 Finishing large diameter wells. 6. Hybrid wells. 7. Non-Vertical wells. 8. Health aspects. 9. Availability of skills and materials.
In English
UNDERGROUND WATER.
WELLS.
30 628.112
Self-help wells/ R. G. KOEGEL - Rome : FAO, 1977 - 73 p. ; ili. - FAO IRRIGATION AND DRAINAGE PAPER NO.30 .
1. Introduction. 2. Groundwater occurrence. 3. Comparison of large and small diameter wells. 4. Small diameter wells. 4.1 Bored or augured wells. 4.2 Driven wells. 4.3 Jetted wells. 4.4 Hydraulic percussion. 4.5 Percussion. 4.6 Hydraulic rotary. 4.7 Casing and screens. 4.8 Methods for obtaining vertical reciprocating motion. 4.9 Rope. 4.10 Well development and finishing. 4.11 Problem solving. 5. Large diameter wells. 5.1 Rationale for construction of large diameter wells. 5.2 Dimensions for large diameter wells. 5.3 Excavation. 5.4 Lining the excavation. 5.5 Equipment for raising and lowering materials. 5.6 Moulds. 5.7 Concrete work. 5.8 Safety. 5.9 Finishing large diameter wells. 6. Hybrid wells. 7. Non-Vertical wells. 8. Health aspects. 9. Availability of skills and materials.
In English
UNDERGROUND WATER.
WELLS.
30 628.112