According to the Hanoi Urban Railway Project Management Board (MRB), the TBM 1 tunnel excavator "Than Phat" has passed through a residential area in Kim Ma ward (Ba Dinh district), approaching the S10 station.
Previously, on February 20, when the 1 TBM dug to the above area, an incident occurred where an additive was released while digging a tunnel to the ground, affecting many households in lane 7 Giang Van Minh (Kim Ma ward).
After the incident, the investor, MRB, the local authorities and the construction contractor, quickly handled the incident, remedied the consequences and determined the cause.
By February 23, the incident had basically been controlled, with no more side effects. It is known that initially, the construction contractor supported 30 affected households with 1 million VND per household.
Sharing with PV, a household in Lane 7 Giang Van Minh confirmed that it had received 1 million VND in support.
"In addition to that 1 million VND, residents have not received any additional support. Many houses after the incident had damaged items such as water pipes, toilets...", a resident shared with PV.
Regarding the cause of the incident, MRB informed that during the drilling process, the tunnel drilling accessories were sprayed with pressure to stabilize the soil in front of the peach mirror. When encountering holes, tunnel drilling additives combining water and fine materials in the soil will follow these holes to the ground.
MRB also affirmed that this is a common phenomenon in the construction of urban tunnel drilling works using TBM technology to balance soil pressure (EPB).
The above phenomenon did not affect the structure of the project nor caused any human casualties.
According to the diagram of the underground section of the Hanoi City Metro pilot Urban Railway Project, the Nhon - Hanoi Railway Station section (Nhon - Hanoi Railway Station metro), tunnel excavators TBM 1 and TBM 2 will dig a tunnel with a length of nearly 2.58km (from S9 - S12 stations).
Of which, from S9 to S10 station is nearly 1,338m, S10 to S11 station is nearly 700m and S11 to S12 station is nearly 538m. The underground project passes through residential areas.
According to MrB's previous report, through monitoring and surveying the current status, the project has compiled a list of 50 construction works affected by the project's tunnel construction. Of which, 7 households had to demolish their houses and 43 households temporarily resided there.
Kim Ma Station (S9 Station) is the first underground station. This location is in Ngoc Khanh ward, Ba Dinh district, right at the foot of Vinhomes Metropolis.
From Kim Ma station towards Giang Vo intersection is the location of Cat Linh underground station ( choice station S10). This station is located on Cat Linh Street, under Pullman Hanoi Hotel.
Van Mieu Underground Station (S11 Station) is located at the Van Mieu - Quoc Tu Giam intersection. From here, the train will go towards Tran Quy Cap to reach Hanoi Station.
S12 underground station is located next to the Tran Hung Dao - Le Duan intersection, right in front of the Hanoi Station gate. This is an underground station and the final stop of the Nhon - Hanoi Railway Station metro line.
