DPWH FAST TRACKING FLAGSHIP BYPASS ROAD PROJECT IN DAVAO CITY, WORKING SIMULTANEOUSLY ON BOTH ENDS OF 2.3-KM ROAD MOUNTAIN TUNNEL
by Philippine Resources - June 13, 2022
Photo credit: Department of Public Works and Highways
A new milestone was reached by the Department of Public Works and Highways (DPWH) in the Davao City Bypass Construction Project with excavation works for the 2.3-kilometer twin tube road mountain tunnel now conducted at four (4) areas north and south portals.
DPWH Undersecretary and Build Build Build Chief Implementer Emil K. Sadain together with Embassy of Japan in the Philippines Economic Affairs Minister Masahiro Nakata and Japan International Cooperation Agency (JICA) Chief Representative Takema Sakamoto led on June 9, 2022 the ceremonial kick-off of excavation activities for south portal tunnel southbound direction.
Undersecretary Sadain, in-charge of Unified Project Management Office (UPMO) Operations, explained that the road tunnel construction works using cutting-edge equipment and technologies were earlier started at north portal on November 19, 2021 for southbound direction and December 10, 2021 for northbound direction while excavation activities from opposite end at south portal northbound direction commenced last May 12, 2022.
Simultaneous tunnel portal construction activities on both ends will fast-track the completion of the soon to be first-ever long distance road mountain tunnel in the Philippines, Undersecretary Sadain said.
Based on the report of Undersecretary Sadain to DPWH Acting Secretary Roger G. Mercado, construction of road tunnel at north portal has reached 202 meters at southbound and 91 meters at northbound.
The construction of road tunnel involves excavation of tunnel portal areas using the conventional "New Austrian Tunneling Method”, mucking or removal of soil from tunnel interior, initial shotcrete to protect from risk of fall materials and to prevent loosening during shotcrete application, steel ribs installation to provide effective structural protection, second shotcrete with wire mesh to secure stability, and rock bolt installation to provide bearing force and become a part of tunnel support system.
The kick-off ceremony, following Filipino and Japanese traditions, at Barangay Matina Biao, Davao City was also attended by Councilor Edgar P. Ibuyan Jr. representing Davao City Mayor-elect Sebastian Z. Duterte; DPWH UPMO Roads Management Cluster 1 (Bilateral) Project Director Benjamin A. Bautista; Embassy of Japan 1st Secretary Jumpei Tachikawa; JICA Representative Ochi Kaoru; Davao City District Engineer Richard Ragasa; Project Managers Joselito Reyes and Joweto V. Tulaylay; Engrs. Juan M. Diña Jr. and Earl Nicholas F. Rada; and officers of the consultants Nippon Koei Ltd., Katahira & Engineers International, Nippon Engineering Consultants Co., and PhilKoei International Inc.
The 45.5-kilometer Davao City Bypass Construction Project is divided into six (6) contract packages (CP) with the on-going CP 1-1 covering a 10.7 kilometers of 4-lane highway and 18.9 kilometers CP 1-2 and CP 1-3 under procurement stage financed by Official Development Assistance (ODA) from JICA thru the Special Terms for Economic Partnership (STEP) Loan Agreement Nos. PH-P261 and PH-P273. While for funding by the Government of the Philippines are CP 2-1, CP 2-2 and CP 2-3 with a total length of 15.9 kilometers.
The opening of new road networks through the Davao City Bypass Construction Project is expected to usher more development opportunities as it will greatly improve Davao City's accessibility and traffic condition.
“On behalf of DPWH, I would like to thank the Government of Japan thru JICA together with other development partners Asian Development Bank, World Bank, Export Import Bank of Korea, and Export-Import Bank of China for taking a great part in bolstering the Philippines’ stride to reach the peak of infrastructure development through the “Build, Build, Build” Program that will elevate living condition and benefit every Filipino”, added Undersecretary Sadain.
Other than the tunnel, CP 1-1 awarded to Shimizu – Ulticon - Takenaka joint venture involves construction of four (4)-lane road with a length of 7.9 kilometers; three (3) pairs of bridges with total length of 500 meters including the Davao River Bridge; two (2) underpasses and two (2) overpasses; 12 waterways culverts; and four (4) at-grade intersection.
Starting from Davao-Digos section of the Pan-Philippine Highway in Brgy Sirawan, Davao City going to Davao-Panabo section of the Pan-Philippine Highway in Brgy J.P. Laurel, Panabo City, the project is expected to ease traffic situations along the areas.
The completion of the entire bypass road project will slash travel time to under 49 minutes from the usual 1 hour and 44 minutes.
Article courtesy of Department of Public Works and Highways
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Philippine Resources - July 16, 2021
Duterte Opens New Expressway in Central Luzon
Motorists will now be able to use the first 18-kilometer portion of the Central Luzon Link Expressway (CLLEX) from SCTEX/TPLEX connection in Tarlac City up to the intersection of Aliaga-Guimba Road in Aliaga, Nueva Ecija. President Rodrigo Duterte, Department of Public Works and Highways (DPWH) Secretary Mark Villar, Senator Bong Go, and Japanese Ambassador to the Philippines Kazuhiko Koshikawa led on Thursday the inauguration ceremony of the four lanes toll-free expressway project connecting the provinces of Tarlac and Nueva Ecija. The initial part of CLLEX that will be opened are the following sections covered by three contract packages: 4.10 kilometer Tarlac Section, 6.40 kilometer Rio Chico River Bridge Section including the 1.5 kilometer Rio Chico Viaduct, and Aliaga Section with up and down ramps at Guimba-Aliaga Road. This new highway project was implemented by DPWH Unified Project Management Office (UPMO) led by Undersecretary Emil Sadain and Project Director Benjamin Bautista of UPMO Roads Management Cluster 1 (Bilateral) who have worked double-time to deliver the completion of this project. CLLEX is among the key infrastructure projects with funding assistance from the Government of Japan thru the Japan International Cooperation Agency (JICA) in support of the Build, Build, Build program. The entire 30-kilometer expressway project is expected to shorten the usual travel time of 70 minutes between Tarlac City and Cabanatuan City to just 20 minutes. More than just scenic views experienced while you drive and visit the stunning places in Central Luzon, this new highway will help ensure the Philippines’ sustainability and development by addressing barriers in distance and mobility. The Build, Build, Build program continues to deliver its promise of creating infrastructure that improves the lives of Filipinos in the face of the Covid-19 pandemic and other challenges. While Build, Build, Build continued to make progress, it is also setting up the foundation in terms of infrastructure for the next generation.
Philippine Resources - July 16, 2021
Duterte: New Tarlac-Cabanatuan Expressway to Boost PH Economy
By Ruth Abbey Gita-Carlos
Philippine Resources - June 09, 2021
CLLEX up to Aliaga will open this July
Photo Credit: Department of Public Works and Highways Public Works and Highways Secretary Mark A. Villar expressed confidence that the Central Luzon Link Expressway (CLLEX) will be an efficient alternate route for the motoring public going to Nueva Ecija when it opens next month. Despite work slowdown due to the pandemic, the first 18-kilometer segment of CLLEX will be of service to motorists from SCTEX/TPLEX connection in Tarlac City up to the intersection of Aliaga-Guimba Road in Aliaga, Nueva Ecija this July 2021, declared Secretary Villar. Secretary Villar said that contract packages 1 and 2 covering Tarlac Section and Rio Chico River Bridge Section having a combined length of 10.5 kilometers are already completed while construction of 9.2 kilometers contract package 3 - Aliaga Section is 87 percent finished. Secretary Villar together with Undersecretary for Unified Project Management Office (UPMO) Operations Emil K. Sadain and Region 3 Director Roseller Tolentino personally checked on Tuesday, June 8, 2021 the project’s progress which already has an overall accomplishment of 94 percent, making sure that the road is built with quality construction materials and specifications. Construction of the ₱11.811 Billion road project funded by loan with Japan International Cooperation Agency is implemented by UPMO-Roads Management Cluster 1 headed by OIC Project Director Benjamin C. Bautista. In his report to Secretary Villar, Undersecretary Sadain said that the delivery of right of way (ROW) requirements are being fast-tracked, with the assistance of the Office of the Solicitor General (OSG) for expropriation complaints and other ROW-related cases. “We are hopeful that we will finally secure full site possession of the remaining required ROW to allow our construction activities to go on full throttle”, added Undersecretary Sadain. Expropriation proceedings with the appropriate court were initiated for properties whose owners were unable to grant the request to donate or accept price offer for negotiated sale within a given timeframe. More available ROW and favorable weather conditions will enable DPWH to catch up and finish the 10.3-kilometer Contract Package 4 - Cabanatuan Section which is now 88 percent completed. Meanwhile, the Zaragoza Interchange Section under Contract Package 5 is at 26 percent which involves construction of 113 meters Zaragoza Interchange Bridge, 4.88 kilometers access road, two (2) pre-stressed concrete deck girder bridge with a total length of 19.4 meters, five (5) reinforced concrete box culverts for equalizer and farm passage, and seven (7) irrigation canals. Once fully completed, the 30-kilometer CLLEX will shorten the usual travel time of 70 minutes between Tarlac City and Cabanatuan City to just 20 minutes. This new expressway will also form an important east-west link for the expressway network of Central Luzon to ensure a continuous seamless traffic flow for the motoring public from Metro Manila and vice versa passing thru NLEX, SCTEX/TPLEX. Article Courtesy of the Department of Public Works and Highways
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Philippine Resources - July 01, 2022
Sampulna cites need for more mineral processing plants to boost PH production
Photo credit: DENR - Mr. Jim O. Sampulna Former Department of Environment and Natural Resources (DENR) Acting Secretary Jim O. Sampulna pushed for the establishment of more mineral processing plants and utilization of rare earth deposits to help increase the country’s mineral production and revenue generation. “Mineral processing plants make the mined mineral ready to use for application. For example, limestone, if processed, will become cement, which is ready to use for construction,” Sampulna cited. “If we have more of these plants and more minerals will be processed in the country, then its value will increase even more than 100 percent, and lesser raw materials will be shipped out to other countries, like Japan or China,” he said. The DENR-Mines and Geosciences Bureau has so far issued 108 mineral processing permits, most of which are for construction materials. Likewise, Sampulna proposed the identification of rare earth elements (REEs), such as scandium and yttrium, in operating mines. Sampulna, who was the former DENR undersecretary for mining, said that these metals are essential parts for many high-technology devices. “The Philippines is conducive to these minerals. It could contribute to the national government through the identification and utilization of these commodities. To date, there are only a few operating mines which have identified REEs,” he said. Sampulna cited that a proposed iron mineral processing plant in Zamboanga had its groundbreaking ceremony on June 18, to support the DENR’s initiatives toward self-utilization of mineral commodities in the country. “We hope that investors will push for the opening of more processing plants in the Philippines,” he said. He also assured Filipinos that the DENR will continue to strengthen its regulation and monitoring of mining operations to ensure sustainable and responsible mineral production in the country. Article courtesy of Department of Environment and Natural Resources
Philippine Resources - June 29, 2022
DENR Awards MGB with Plaque of Appreciation for the Success of the Boracay Island Rehabilitation
Photo: The MGB Boracay Island Rehabilitation Team together with former DENR Secretary Roy A. Cimatu Four years after the Department of Environment and Natural Resources (DENR) spearheaded the rehabilitation of the Boracay Island, the DENR Acting Secretary and Boracay Inter-Agency Task Force (BIATF) Chair Jim O. Sampulna CESO I awarded the Mines and Geosciences Bureau (MGB) a Plaque of Appreciation for its valuable contribution to the success of the Boracay Island Rehabilitation during the BIATF’s culminating event on June 16, 2022. Boracay Island is one of the most developed and densely populated karstic islands in the Philippines. The extensive alteration of its natural landscape, as well as the alleged discharge of wastewater into the sea, posed a major environmental concern, prompting its temporary closure on April 26, 2018. The BIATF then launched the rehabilitation of Boracay island to safeguard its sustainable development. As part of the BIATF, the MGB team, led by Lands Geological Survey Division (LGSD) Chief Liza Socorro J. Manzano, was composed of technical personnel from the LGSD of MGB Central Office and the Geosciences Division of MGB Regional Office No. VI. The team conducted studies on hydrogeology, coastal geohazards, karst subsidence hazard, and geophysical investigations using Ground Penetrating Radar (GPR) and georesistivity. The highly specialized studies sought to provide a holistic understanding of the island’s karstology and the impacts of tourism development to ensure that the rehabilitation efforts of the government are predicated on the ecological sustainability of the small island karst. Ultimately, the results of the GPR investigation on pipes discreetly disposing wastewater and polluting the seawater of Boracay which resulted in the discovery of their existence and eventual dismantling of the same is a "game-changer" relative to the implementation of science-based strategies and crafting of policies for appropriate wastewater and solid waste management in the island. Article courtesy of the MGB
Philippine Resources - June 28, 2022
The Fault with Cobalt: Overcoming the Challenges of Battery Metal Exploration
upply Co., Inc. Cobalt is an important element used to manufacture rechargeable batteries. Cobalt has unique properties that help improve thermal stability, which is critical for the batteries to function properly. It also helps improve some batteries’ energy density, so they can last longer. The demand for cobalt is high, so geologists need fast, accurate tools to help them meet these requirements. Portable X-ray fluorescence (pXRF) analyzers are one of these tools, as they provide on-the-spot material chemistry results. Why Choose Portable XRF for Cobalt Exploration? Portable XRF provides rapid, in situ, multielement geochemistry for immediate results in the field. This is useful for greenfield and brownfield exploration, ore grade and process control, environmental monitoring and remediation, and researching/teaching within the geological/environmental sciences. For battery metal exploration, portable XRF provides decision-quality data faster than traditional, lab-based XRF, and also enables more discriminatory laboratory sampling, helping reduce costs and improve ROI. With sample preparation, pXRF produces high-quality quantitative data that is comparable to laboratory analysis. Challenges with Analyzing Cobalt XRF is prone to inter-element interferences. Iron (Fe) on cobalt (Co) and nickel (Ni) on cobalt (Co) are two common examples. This means that when a lot of iron is present, it becomes difficult for XRF to identify cobalt at low levels. Likewise, the presence of nickel also makes it difficult for XRF to ID cobalt. Unfortunately, cobalt is routinely explored for in the presence of significant amounts of iron and nickel. To solve this challenge, we developed a GeoChem method for Vanta™ pXRF analyzers that offers improved analysis for battery metals exploration by being able to detect cobalt in the presence of iron and nickel. This innovative method overcomes the interference that has historically made it very difficult for portable XRF analyzers to detect cobalt in the presence of these other elements. The method we developed for the Vanta analyzer is built on the current GeoChem method, but with a more sophisticated way of deconvoluting the iron/cobalt/nickel peaks. Before deploying this solution, we tested it on client samples to make sure that it produced good results. Test Results We analyzed 16 samples with high iron content—9% < Fe < 50%, 50 ≤ Co ≤ 6000 ppm, Ni < 500 ppm. We also analyzed 50 samples with a moderate amount of iron—0.5% < Fe < 15%, 16 < Ni < 8000 ppm, 50 ppm < Co < 2.3%. The samples were pulps in XRF cups, and they were analyzed using 60 seconds per beam with no corrections. The graphs below show excellent agreement between the results obtained from a lab and results obtained using a Vanta portable XRF analyzer, indicating that the modified GeoChem method can accurately detect the presence of cobalt when it’s in the presence of both large and moderate amounts of the interfering elements iron and nickel. Geologists now have another important tool that they can rely on when exploring for new sources of this vital element.
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