WATERPROOFING STRUCTURE AT JOINTS BETWEEN PRECAST CONCRETE SEGMENT BLOCK USING A WATERWAY

摘要

The present invention relates to a waterproof structure of a joint of a concrete block, but conventionally installed a water expansion index material or a mortar is injected into the joint, there was a disadvantage that the operation is complicated and takes a lot of time.;According to the present invention, in the waterproof structure of the joint portion of the precast concrete segment block, the concave grooves 11 are formed on both sides of the precast concrete segment block 10, respectively, to the pair of concave grooves 11 facing each other during the tunnel construction. The collection groove 12 is formed by this, and the absorption member 13 is installed along the collection groove 12 to absorb the groundwater flowing along the connection portion, and the house is disposed on both sides of the bottom of the concrete block 10. The drainage hole 14 was installed in the longitudinal direction of the tunnel from the lower end of the male groove 12 to allow the inflowing groundwater to flow therethrough.;Therefore, according to the present invention, it is possible to improve workability by simple waterproof construction, and to ensure excellent waterproof performance of the joint portion.