--연구원 칼럼(舊)

객원연구원논문 Qanat 2.

객원연구원 Mahdi Hajakhani

2020.04.27 | 조회 6297

 

 

 

Where can the Qanat be dug?

 

As a general principle, the Qanat can be drilled in an area where, in addition to the geological structure of the site, the surface of the ground is in a certain direction with a gentle slope. They are generally parallel to the slope direction at ground level.

Deep tunnels redirect the drilled aquifers and stored water deep down to the surface. Digging tunnels is a very difficult task, and properly guiding them in the depths of the Earth requires sophisticated technical skills.

It is natural that digging the narrow tunnels in the basement and steering and steering them is much more difficult than digging large tunnels, and the Iranians have gained valuable skills and skills in this field.

The Iranian Plateau has long been the home of a population tha thas been constantly striving to utilize the latest environmental amenities for agricultural expansion and food supply, so they have worked diligently wherever it is possible to dig Qanat.(Figure6)

The final result is that the number of Qanat’s and their discharge capacity reaches a level equal to the amount of water submerged in the ground, and even regulations and laws have been put in place to limit the number of Qanat’s and create privacy for them.

The result of thousands of years of effort and experience in any groundwater exploitation has led to the creation of a highly sustainable and balanced system with the natural requirements of the Iranian plateau and determined on the basis of the Qanat's capacity in each area of ​​the city and its countryside.

In the last twenty or thirty years, motors have been found that dredge tens of kilometers of underground tunnels and allow for the considerable effort and expense of drilling a single well to return groundwater to the surface. And especially their very high yields in the first few years of exploitation allow them to stand up and fight along the Qanat and eventually destroy the Qanat’s. (Figure 7)

 


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