"The La Son - Tuy Loan expressway has serious erosion in Thua Thien - Hue area", public opinion raised many questions during the project construction process. To widen public opinion, PV contacted with some officials and engineers in the construction industry to discuss this issue.
Despite the use of barrier measures, landslides still occur
The La Son - Tuy Loan expressway project, with a total length of 77.5 km, starts from La Son junction (Phu Loc district, Thua Thien - Hue) and enters Tuy Loan intersection (Hoa Vang district), connecting tangent to Danang - Quang Ngai highway. The project has a total investment of VND 11,486 billion, in the form of a BT contract and the project has about 11 km passing through the area of Bach Ma National Park (Thua Thien Hue).
In the course of construction, many landslides have been eroded, the risk of affecting the operation of the building is unavoidable.
Engineers also questioned the low concrete grade so when it rained, water permeated
passing concrete causes moist soil to cause landslides.
Engineers said that through the image, it can be seen after the landslide that the face was left
concrete is thin so it cannot hold soil inside
To understand this issue, PV Nhadautu.cn had a meeting with some specialized engineers in construction of bridges and roads.
Talking to PV Nhadautu.vn some road and bridge construction engineers said that the Project Management Board had landslides for many reasons, but when viewing the photos and videos that PV provided during the event exchanging engineers who have doubted that the geological and technical inspection is not close enough, so a series of landslides happened, causing serious damage to the project.
Even the construction drainage system is also sketchy, leading to slippery osmosis is evident, some earlier points have been completed by using reinforced measures to build retaining walls, jerking the roof level, spraying concrete. but serious landslides still occurred.
Regarding this problem, N.T engineers said that when looking at the pictures, after the landslide, the project shows a whole modern highway project between the complicated mountainous areas and many rainy and flooded areas. But the surface of the ta-luy, which is covered with a thin layer of concrete, is unable to hold onto the soil and stone, resulting in a landslide.
Although the drainage system was made of concrete but it still broke, the rocks lay inert
Landslides cause soil to fall on the gutter system
In addition, public opinion is doubtful, whether concrete marks have been implemented by contractors in accordance with the design standards, if low concrete marks are used when it rains, water penetrates through concrete surface, penetrates into the floor. Soil should cause continuous landslide.
Also according to NT construction engineer, in order to occur the situation of a landslide from a particularly important expressway, the responsibility is first to the owner, then the contractor to supervise the supervision. lack of responsibility in construction supervision.
As for the construction unit for this important and complex project, the construction contractor is mainly by manual method, so errors occur.
Express has appeared substandard peeling
In order for this work to cause serious damage, apart from the investor, the construction supervision consultancy unit, the construction contractor is the unit responsible before law. Also talking about the problem of repairing and repairing, engineers said that to overcome the problem of landslides, it must first take a long time. Recently, this project has just applied for an additional 2,000 billion VND to complete the scale of the 4-lane highway.
As information has been continuously reflected earlier, about the incident on the Da Nang - Quang Ngai expressway, an engineer has prosecuted many mistakes of the famous high-speed investor of VND 34,000 billion for the phenomenon. construction of cement reinforcement macadam class at Km 105 + 300, A3 package of Da Nang - Quang Ngai highway project is not good quality.
With the above situation, the public is questioning whether the contractor will conduct construction recklessly at La Son - Tuy Loan expressway?
