During excavation of Shilin headwaters tunnel, there was a serious gas escape and gas explosion which caused the deaths of two people. The problem was rock slips had allowed gas to escape. The owners had contacted a number of international professional firms. They finally adopted our company’s proposal to provide gas-sealing polyurethane resin grouting as
The Daguan Power Station’s penstock is composed of 50m deep, 6m diameter shafts and two long 80m horizontal water chambers.Due to an earthquake causing serious damage to the RC lining, repair was needed.The repair work had to be carried out deep inside the shafts and each water hamber, and the rapid change in head pressure
Full grouting throughout the whole tunnel (about 7.8km), including consolidation grouting, water-seal grouting, pumping collapse grouting, gas escape sealing grouting, rock plate extrusion deformation treatment, grout injection into collapsed hole layer and backfill grouting after works completion, and so on.
Ultrahigh-voltage cables run along an underground cable tunnel at the Ever Power Power Plant. Therefore, the leakage repair work had to take care of construction impact on the cables and also be aware of the special safety issues in ultrahigh-voltage ducts. This project dealt with leakages including leaking construction joints, contraction joint leaks, and template
The Taipei MRT system is a large-scale underground construction. Our company has been involved in many water-proofing and water seal tenders, and has worked with large construction companies, like Rong Engineering Co Ltd, NewAsia Construction, B+B, US McKay, BES Engineering Corporation, Pan Asia Corporation, Continental Engineering Corp, and others, to provide leakage sealing services.Leakage in
Site improvement of connection tunnel at Taipei Airport MRT Station A18The construction site of this building protection horizontal grouting ground improvement project was located in the basement connecting tunnel of Station A18 with high-speed rail Taoyuan Station. Horizontal Double Packer grouting was carried out between the open-cut excavation region and Taoyuan High-Speed Rail Station.Ground improvement
Tanshui Line ITTX60Minquan West Road upward track rail tunnel continual wall seepage improvement.In this case, Tanshui Line Minquan West Road upward track tunnel gushing water, two water sealing methods were used: polyurethane resin sealing layer and Double Packer grouting, to successfully solve the expansion joints gushing water problem.
Loop line CF640 section shield tunnel with connecting passage – ground improvement works to improve the outer periphery of scheduled openings and tunnel junctions, and to overcome proximity of shield drilling and shallow soil cover. Also, to overcome site strength and water-resistance for passage excavation.The scope of the project was cross-line work, well shield departure
Taipei Songshan Line CG590C sector works CP690 connection channel ground improvement. Songshane Line CG590C, ground improvement grouting before construction of CG296 shield tunnel connection channel. Since there was a drainage culvert above the connection channel, Double Packer grouting was carried out to improve operations. After improvement completion, Pipe Umbrella Roofing was excavated above, and injection
The Tour-Chyan Stream Bridge has four spans of steel deck. The steel deck, withan area of 11,566 square meters, was designed to be protected by waterproofing membrane.According to design, modified asphalt sheet was selected as the membrane material, and blasting was necessary before primer application. The work was started in mid-2000 and was expected to