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Xinziqiang Tunnel Opened on October 20 (2015)

*  category: Railways
*  Business category: Scheduled news conferences
*  Publish Date: 2015-11-26
*  Units: Railway Reconstruction Bureau
 
*  Content:

The last link of the Hualien-Taitung Line Electrification Project involves one of key engineering work on Xinziqiang Tunnel, which has taken five years and four months to complete thus far. On October 20 (2015), workers finally drilled all the way through complicated geology comprised of uncompromising silt.
Located below Wuhe Plateau between Hualien County’s Rueisuei and Sanmin, Xinziqiang Tunnel boasts a length of 2,667 meters. The geology here is quite complex as there’s a combined structure of conglomerate, schist and slate at the Wuhe area, and an absolutely devious 300-meter stretch of silt (sedimentary rock). Drilling started in June 2010 only to meet the pesky layer of silt in April 2011. Unrelenting pressure resulted in the tunnel’s shape starting to morph, which caused work progress to stall severely. The most difficult year for drilling though was 2012 when only 22.8 meters of the tunnel were drilled. Yet, the Railway Reconstruction Bureau’s (RRB) construction team didn’t give up the fight, and after a lot of exhausting work the team decided to shorten the section of the tunnel drilling method and start injecting a mixture of grout. The team eventually ended up overcoming challenges posed by the difficult mix of geology, and they reached the important milestone of drilling the tunnel’s length while constantly surveying to make sure the error of coordinates on both sides of the tunnel were always within 10 centimeters. This effort reflects the team’s insistence on precision as well as the excellent quality of the project’s construction. In the history of Taiwan’s tunnel engineering projects, Xinziqiang Tunnel stands out as both an impressive break thorough and a great success story.
 

*  Contact: Chung Cheng-hsien
*  Phone: 89691900
*
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Visitor:8940     Update:104-11-26
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