Department of Rapid Transit Systems,Taipei City Government

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Seepage Water on the Track Bed at Sun Yat-sen Memorial Hall Station on the Bannan MRT Line Has been Eliminated, and Monitoring Data for This Area Ensures the Safety of the MRT

A couple of days ago, a small amount of water was discovered on the track bed located on the Bannan MRT line. Department of Rapid Transit Systems (DORTS) together with Taipei Rapid Transit Corporation (TRTC) made a site inspection and discovered that the reason for the seepage is due to blockages in the drain pipes. After TRTC carried out the relevant treatment, the seepage problem has been fixed.

Due to the existence of rainwater or ground water, water leakage often occurs at cracks that tend to develop at the construction joints of the diaphragm walls which are built underground between the entrances and main structure of station. In order to remove the water, related drain pipes have been designated for installation. DORTS stated that this time when TRTC was proceeding with the removal of scrap iron and ash which had accumulated for years after finishing the rail-grinding work, the aforementioned materials most likely blocked the pipes so that the water flowed over the track bed. DORTS also added that as long as the waste materials in the pipes are removed, there are no risk concerns with the operation of MRT. As for the query raised by the city councilors, DORTS has promised to make a joint site inspection with TRTC and recheck it if abnormal seepages occur again during the rainy season.

DORTS reiterated that the Taipei Dome's foundation construction was completed on August 15, 2015, and the follow-up reports with no obvious variations in monitoring values definitely indicate that the clay strata are stabilizing and will have no further impact on the Bannan MRT line. In addition, further inverted cracks have been already repaired, and safety evaluations and subsequent improvements are in the process of being carried out by Taiwan Geotechnical Society. DORTS will continue to check monitoring data in order to ensure the safety of the MRT. Therefore the general public can rest assured when taking the Bannan MRT line.

  • Hit: 877
  • Updated: 2016/11/10 15:04
  • Reviewed: 2017/2/10 09:31

  • Source: Department of Rapid Transit Systems, Taipei City Government
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