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As of December 31st, 2002

Physical Progress

Contractor

JV of Dong Ah and Song Da

Commencement of the Works

1st October 2000

Time Elapsed (days) 818 of 1460 (56.03%) Remaining 642 days

Progress

 

Main Tunnel(2417m)

132.16m in this month; 1677.46m in total(69.4%)

Evacuation Tunnel(2429m)

92.2m in this month; 1714.38m in total(70.58%)

Access Road to Water Reservoir.

Completed 50m of drainage ditch

Bridge No.1(58m)

Excavation for South Abutment: 218m3

Others

 

 

Photographs

South Portal
Looking Over-break in Top Heading of Main Tunnel
Big Over-break in Main Tunnel
Big Over-break in Top Heading
Check the Geo-textile by Air Pressing Method
Installation of Wire Mesh for Concrete Shotcrete
Preparation for Concrete Placement of Block No.27
Preparation of Rock-bolt for Installation in Top-heading of Main Tunnel
Fixing of Waterproofing Membrane
Construction of Mole Drain Pipe
Setting Formwork for Placement of Concrete Lining
Placement of Concrete for Lining of Main Tunnel
Setting Formwork for Foundation Beam
Placement of Concrete for Foundation beam
Drilling of Fire Fighting Niche
Construction of Bench
Installation of Wire Mesh for Main Tunnel
Crushing area in Evacuation Tunnel
Construction for No. 0+10 Culvert
Concrete Placement for Bed of South Abutment
Geological of South Abutment of Bridge No.1
Installation of Reinforced Steel Rib for South Abutment

Top

Construction Supervision

Summary

During the reporting period 92.2m of Evacuation Tunnel and 132.16m of Main Tunnel Top Heading was excavated, giving a total length of 1714.38m of Evacuation Tunnel and 1677.46m of Main Tunnel Top Heading excavated to date.

Bench excavation continued with 322.3m being excavated on the West Side and 358.8m excavated on the East Side.

Tunnel lining continued with 180m of tunnel completed.

Excavation was down over the reporting period due to poor geological conditions in both the Main and Evacuation Tunnel.

Over the reporting period there was no recovery against the original clause 14 construction schedule. The Main Tunnel is three weeks behind programme and Evacuation nine weeks.

It is expected that progress over the next month will be poor due to the poor geology and the fact that tunnel lining is suspended as there is no lining membrane on site.

Major Events and Issues

In December, there were some delegations visiting the site: JBIC delegation, Delegation of East-West Corridor and Delegation of MOT led by Deputy Minister, Mr. Nguyen Viet Tien on 16, 17 and 19 respectively.

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