can u tell me the methods to tap underground water resources?

Answer 1

Dig or drill a well. Water wells are usually drilled with either rotary drill rigs which rotate a pipe with a drill bit on the end, or air rigs. The air-powered rigs have a sort of jackhammer tip on the end of the pipe and use the air from the air jackhammer to blow the cuttings back out of the well. The rotary rigs usually use water and mud to float cuttings back out. There were some old style drill rigs called "cable rigs" which lift and drop a heavy drill bit to shatter the rock to make a hole. There are some rotary rigs which can lay on their sides and drill horizontally.

Answer 2

AFRICA: First-ever survey of underground water resources


[This report does not necessarily reflect the views of the United Nations]


© UNDP/Doninic Harcourt-Webster


ADDIS ABABA, 6 Jun 2002 (IRIN) - Experts are aiming to tap Africa’s massive underground resources to tackle the continent’s water crisis, the United Nations said on Wednesday.

Geohydrologists from more than 20 countries have conducted the first ever continental survey of enormous underground water pools – known as aquifers - in Africa.

The team of experts met in Tripoli as part of a project by the United Nations Educational, Cultural and Scientific Organisation (UNESCO). The scientists will create the first ever global map and inventory of the aquifers.

One huge aquifer – which could fill a pool the size of Germany several hundred metres deep – lies under the desert sands of Libya, Egypt, Chad and Sudan, a UNESCO press release said. The new African survey has uncovered about 20 trans-boundary aquifers, five of which have never been identified before.

“Like rivers, aquifers cross national borders and can be shared by two or more countries," the UNESCO statement said. “Unlike rivers, little is known about these shared or trans-boundary aquifers.

“Substantial investment and scientific expertise is required just to identify or map the boundaries of an aquifer before beginning to accurately assess the quantity and quality of water it contains.”

UNESCO – which named the project Internationally Shared Aquifer Resources (ISARM) - believes that if properly tapped, the water could help millions of people on the continent.

But, it says, major hurdles must be overcome before the resources can be tapped. Some governments are reluctant to admit to other countries they have huge water reservoirs. Furthermore, there are no laws to govern the shared water pools which can stretch for thousands of kilometres passing beneath several countries.

“This legal vacuum can generate considerable misunderstanding and tension,” the organisation said. It warned that countries could scramble to use as much water a possible fearing a more powerful neighbour might tap the resource.

“Trans-boundary aquifers are therefore potential 'hotspots' or sources of conflict, especially in arid regions where fierce competition for water resources will intensify in the future because of population growth and the expected impact of climate change,” UNESCO said.

Answer 3

Make boring put pipe fit a pump & lift the water

Answer 4

read 10 std
s.s book

Answer 5

Bore well!