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Manila Bulletin devider Philippines devider National devider More excavation works on Davao City Bypass Road's twin tunnels under way

More excavation works on Davao City Bypass Road's twin tunnels under way

Published Sep 13, 2021 05:24 pm

More intensified excavation works for the 2.3-kilometer twin tunnels of the Davao City Bypass Road will be conducted in the coming days, the Department of Public Works and Highways (DPWH) bared Monday, Sept. 13.

KEY DRILL MACHINES-- Excavation works on the twin tunnels along the Davao City Bypass Road using the new equipment will start by the last quarter of the year. (Photo courtesy of the DPWH)

Public Works and Highways Secretary Mark Villar said they are now preparing the specialized equipment, which recently arrived in Davao City, to work for the Davao twin tunnels.

The twin tunnels are a key component of the 45.5-kilometer Davao City Bypass Road Project in Southern Mindanao.

The entire Davao City Bypass Road will begin in Barangay Sirawan, Toril, Davao City and will end in Barangay J.P. Laurel, Panabo City.

According to DPWH Undersecretary Emil K. Sadain, the first blast using the drill machine to excavate a two-tube mountain tunnel is targeted by "this early last quarter of 2021."

"A total of 56 equipment from Japan, France and Korea are now available on site that includes two batching plant at the north and south portal, and several tunneling equipment such as horizontal boring machine and tools, twin header base machine/crawler excavator, twin header attachment, erecter with shotcrete machine, drill jumbo, and tunnel ventilation and dust collector, wheel loader, truck mixers and water truck," Sadain said.

"Other equipment and materials, delayed by the unprecedented disruption to international shipping caused by COVID-19 pandemic, are expected to arrive on the tunnel site this last quarter," he added.

The tunnel is part of the 10.7-kilometer four-lane highway under contract package 1-1 awarded to the joint venture companies of Shimizu Corporation, Ulticon Builders Inc., and Takenaka Civil Engineering & Construction Co, Ltd.

The road project is under the construction supervision service of consultancy firm of the joint venture Nippon Koei Co. Ltd., Katahira Engineering Inc. and Nippon Engineering Consultant together with PhilKoei who are experts in several international tunneling projects in Japan.

The two tunnels will be constructed using a new Austrian tunneling method or sequential excavation method and will have a diameter of 10 meters located at the central portion of the bypass road project.

Aside from the twin tunnels, the contract package also covers the construction of bridges in three locations as well as a 7.9-kilometer four-lane road, two underpasses, two overpasses, 12 box culverts for waterway, and four at-grade intersections.

The road project is financed by the Official Development Assistance (ODA) of the Government of Japan with Special Terms for Economic Partnership (STEP) Loan from Japan International Cooperation Agency (JICA).

Related Tags

Mark Villar TWIN TUNNELS 91321 DAVAO CITY BYPASS ROAD DPWH
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