As per the dictionary, drainage is nothing but the action involving the removal of a fluid or a material or a wound cavity by using the techniques of suction or even gravity. Now, not restricting ourselves to the medical meaning of the term, the other aspects need to be explored too. Its agricultural and psychological aspects are different. Talking about its meaning in psychology, it should be elaborated upon that the term refers to the process of releasing out all the conflicts or pent-up emotions and feelings by means of expression of any kind. These feelings and emotions can be hostility, hatred or even guilt. But, generally speaking, draining can be summed up as a process that is all about removing or emptying something. The benefits of drainage in agriculture are that it adds to the efficiency of the phosphorus fertilizer; it helps conserve nitrogen content of the soil, and above all the technique helps control the problems of water logging, leaching, and salinization of soil that are caused as a result of irrigation.

Drainage systems are the mechanisms and the tools so used in order to accomplish the process of draining. The two main aspects of drainage are agricultural and mining.

1) Agricultural drainage systems:

Drainage in the field of agriculture refers to the process of removing the excess water that is there in the soil of the agricultural farm. The task can be accomplished by using a system of surface ditches. Also, not to forget, underground conduits are a good option too. But, to be able to use them, certain considerations like the soil conditions and the land contour need to be thought of.

It is also noticed that at times, the Diesel or centrifugal pumps are also used for the process of drainage. But these are more effective if draining is to be done on large pieces of land. In modern times, drainage equipment basically consists of the drain pipes of clay, the concrete ones along withy the plastic ones. These are generally positioned many feet under the ground.

2) Mining drainage systems:

Drainage in the sphere of mining mainly consists of removing water that generally seeps into the shafts and the other mine workings (that exist underground) from the surrounding areas. If not done regularly, there is a danger posed to haulage and mining equipment. It may weaken the supporting structures along with flooding the mine completely. The Water in a mine can be drained into sumps, or reservoirs. These reservoirs are generally excavated below the lowest working level of the mine, and are then drained away with the help of pumps.

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