'Rock shed' is the best option in rocky areas like 'Sand Beach': Geologist

Geologists suggest that rockslides would be an effective and cost-effective alternative to tunnels, as landslides are common in Siddhababa due to the 'sand beach'-like geological structure.

Ashad 31, 2083

Madhav Aryal

'Rock shed' is the best option in rocky areas like 'Sand Beach': Geologist

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Passengers and drivers have been facing the problem of landslides occurring from new places every year in the Siddhababa area . But the Road Department and the District Road Division have not yet studied why landslides occur in this way . When landslides occur from new places, some vehicles are buried, swept away, and even cause human casualties . Be it rain or winter, vehicle drivers and passengers are forced to travel at any time, putting their lives at risk .

Be it winter or rain, why is there such a problem in the Siddhababa area? According to Geologist and Consultant Engineer of the Road Department, Madhusudhan Acharya, there is weak terrain in the area of ​​about 8 kilometers from Jhumsa to Chidiyakhola on the highway . Engineer Acharya says that since there are rocks and cliffs like 'sand beach' in that weak terrain, 'rock shed' is the best option to prevent landslides . 'Construction of a tunnel or rock shed is the only option for such an area,' he said, 'There is one type of strong rock in the Siddhababa area. There is another type of weak rock, so there is another type of clay and sand rock in between the two types.'

According to him, geologists and students studying in the Siddhababa area have been studying every year. That is why even though the government has not studied this area, studies have been conducted from other areas. He said that among the many types of rocks in the Siddhababa area, weak and strong ones coexist.

Some rocks are eroded by water. When there is heavy rain, it flows along with the river and becomes muddy soil, said Engineer Acharya. He suggests that if a rock shed is built from Dobhan Bazaar to Chidiyakhola near Lower Siddhababa, it will be possible to travel somewhat safely. 'The tunnel is being built. That will also make some areas safer,' he said, 'In all other areas, rock sheds are suitable. The government should focus on cheaper technology rather than expensive technology.'

He said that a study is needed to identify areas prone to landslides and undetected rockfalls. Acharya said that rock sheds are an alternative to rock nets in such areas. According to him, there are problems in doing rock nets in many areas. But if rock sheds are built, it will be safe if the landslide is not too big or the entire mountain collapses, he said.

He also complains that the government does not listen to expert suggestions until the road is closed and there is no human loss. There is a lack of money to do the work. Rampukar Jayaswal, head of the road division in Palpa, said that there is a lack of money to do the work in the 24-mile and 20-mile areas of the highway.

According to him, the problem of landslides in new places has increased every year due to the roads dug by the local level. He said that there is a need for awareness among the local residents as well as the local level to manage the roads dug by the local level.

‘The way water cannot flow in its own way, then water flows in new places,’ he said, ‘that is why the problem of landslides has arisen. The problem is that water flows in the upper part. Everyone should be aware of this.’ He said that the issue of damage to the highway due to roads dug without a plan should be taken seriously.

According to Acharya’s study and recommendation, when the necessary budget of 38.5 million was requested, 16.5 million was received and work was done accordingly. Geologist Acharya had come and studied after about 50 meters of road was washed away in Tinau Rural Municipality-5, Hiundekhola along the highway and traffic was disrupted.

The work has now been resolved as they worked according to his suggestion. Water had accumulated in the lower part of the road in Hindekhola and it was suggested to make arrangements to drain the water from the road by horizontal drilling. The Road Division had awarded the contract for the work based on the report of the expert deputed by the Road Department to provide a sustainable solution. As per the findings of the X-ray of the ground, preventive work had been taken forward.

The cost was estimated based on the conclusions of the study conducted by Consultant Engineer Acharya and the contract was awarded and the work has now been resolved, said Rampukar Jayaswal, the head of the Road Division, Palpa.

After the road collapsed, Consultant Engineer Acharya had suggested that water was flowing from underground in Hindekhola and that the water should be drained by drilling. He had said that the situation was similar in places including Gorkha and that the problem had been resolved.

Only then had he said that other work should be done and the road should be constructed in the upper part. Consultant Engineer Acharya suggested using gabion mesh, retaining walls, drainage construction, bio-engineering, and sub-base work in Hiundekhola.

Madhav

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