Water Stop Wall "Hexa Gate Plug"
Post-installation water shut-off confirmation is possible! The manhole structure features an easy-to-open and close pin insertion mechanism operated by a handle.
We would like to introduce our "Hexagate Plug." It allows for water stop confirmation after installation. It features an easy-to-open and close manhole structure with a pin insertion mechanism operated by a handle. It can be used for temporary storage of rainwater main lines in shield tunnels, as well as for safety measures during branch connection work and backflow prevention during heavy rainfall. 【Features】 ■ High water stop sealing mechanism ■ Water stop confirmation possible after installation ■ Easy-to-open and close manhole structure ■ Manhole water stop mechanism *For more details, please refer to the PDF document or feel free to contact us.
basic information
For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Purpose】 ■ In shield tunnels - Temporary storage of rainwater main line - Safety measures for branch connection work - Countermeasures against backflow during heavy rainfall *For more details, please refer to the PDF document or feel free to contact us.
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News about this product（2）
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A water stop wall / hexagate plug (HGP) has been adopted for the Chubu No. 7 trunk line.
The Fukuoka City Water and Sewer Bureau has adopted the Hexa Gate Plug (hereinafter referred to as HGP) for the construction of the sewer system in the Fukuoka (Imaizumi 2-chome 2) outer area (Contractor: Ando Hazama). This project is part of the "Rainbow Plan Tenjin," a rainwater drainage facility development plan aimed at preventing flooding damage due to expected guerrilla rainstorms in the Tenjin area. The project involves the construction of a rainwater conduit, and this HGP is installed as a temporary wall within the existing Chubu No. 7 main line, where the inspec-through line (shield method) connects, protecting the shield arrival section from rainwater.
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Completion of the Hexa Gate Plug Construction for the Tachiaigawa Main Line Water Stop Wall.
【HEXA TIMES】No.1 The Hexa Gate Plug (hereinafter referred to as HGP) has been adopted for the construction of the No. 3 rainwater discharge pipe of the Tachiaigawa main line ordered by the Tokyo Metropolitan Bureau of Sewerage (Contractor: Shimizu Corporation). In May 2021, this HGP was installed on the Hamagawa main line and is being used as a rainwater inflow prevention measure during the removal of the temporary wall at the connection point with the Second Samezu main line. Since the tunnel cross-section is not circular but has a special shape, a pressurized tube seal type was adopted for the water stop mechanism instead of the conventional rubber ring type (Hexa Plug type). Additionally, considering the safety of the workers, a highly operable watertight door has been installed. There have been several heavy rain events since the installation, but the sealing performance has been good, ensuring safety within the tunnel, and the construction has been completed successfully.
