Kathmandu.
The tunnel
of the much awaited Melamchi Drinking Water Project is being tested today. The
26-and-a-half kilometer long tunnel is being tested by filling it with water
from today.
Filling of water will be started by holding a formal program at the project site Melamchi. Minister for Drinking Water Mani Thapa will inaugurate the work of pouring water in the tunnel at 11 am today, said Rajendra Pant, spokesperson of the Melamchi Drinking Water Development Committee.
It will take 15 to 20 days to fill the 26-and-a-half kilometer tunnel from Melamchi River in Sindhupalchowk to Sundarijal in Kathmandu. As it is an early stage, water will not be released according to the capacity of the tunnel.
The water was tested in the tunnel on July 15, but the main gate (No. 17) of the audit of Ambathan in Helambu Gaonpalika-1 burst and washed away an engineer and driver of the project. After that, a team of four experts under the grant assistance of the Asian Development Bank (ADB), the main donor of the project, re-inspected and repaired the tunnels, mouths, gates and other structures. "Experts inspected it, including his important suggestions, and prepared for re-examination," said Tiresh Khatri, the project's executive director.
Helicopter standby
Khatri said that the
project has taken special precautions this time to prevent accidents like in
the past.
The helicopter has been kept in readiness during the test. Rescue plans have been made and coordinated with various hospitals in Kathmandu from Dhulikhel.
For the test, water will be flowed in the tunnel at the rate of 260 liters per second as per the technical criteria. After the tunnel is filled with water, it will be kept the same for about 10 days. After that, the tunnel will be emptied by pouring water outside at the rate of 260 liters per second for 15 to 20 days. After discharging all the water, the quality of the tunnel will be re-tested after 7 days.
If any problem is seen,
it will be solved. After all this work is completed, the tunnel will be filled
with water regularly from the old process.
This water will be sent to the distribution system through two treatment plants in Sundarijal. It is estimated that it will take two to three months to start the work of sending Melamchi water to the main distribution line when all conditions are normal.
If the work is done as per the schedule submitted by the contractor and the project to the Prime Minister's Office, the work of Melamchi project will be completed by 2 Baishah 2078 BS (15 April 2021). 170 million liters of water will come to Kathmandu Valley daily from Melamchi.
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