This article throws light upon the top seven methods used for construction of wells. The methods are: 1. Digging 2. Boring 3. Driving 4. Jetting 5. Cable Tool Drilling 6. Direct Rotary Drilling 7. Reverse Rotary Drilling. Method # 1. Digging: Wells in shallow and unconsolidated glacial and alluvial aquifers can be dug by hand using a pick and shovel. [...]
Any given volume, V of soil (Fig. 3.1) consists of: (i) Volume of solids Vs (ii) Volume of liquid (water) Vw, and (iii) Volume of gas (air) Va The porosity n, the volumetric moisture content w and the saturation s are defined as N = Vv/V Obviously, w = s.n. Further, if the weight of water in a wet soil [...]
After reading this article you will learn about the delivery of water to farms through rotation delivery or warabandi system. In the rotation delivery system, water is delivered from a watercourse to various farms situated along the watercourse according to a pre-decided time roster. Accordingly, this delivery system is also known as warabandi system, which can be defined as an [...]