Underground Continuous Wall Construction Technology

The underground continuous wall construction technology abstract underground continuous wall is suitable with each kind of soil texture, the underground continuous wall construction flow including constructs leads the wall, the slotting, the mud counterfort, the clear bottom, the hoisting reinforcing cage and the irrigation concrete. Excavates front the project, builds first in the ground according to the building plane leads the wall, with the specially made slotting machinery in the mud counterfort situation, each time excavates certain length (a unit trough section) the trench, treats excavates after the designed depth and eliminates the slime which the precipitation gets down, processes the ground the reinforcing cage to hang with the hoist crane puts in the fill mud in the trench, uses the submarine concrete the method, builds the concrete with the drive pipe to the trench in, because the concrete is starts by the trench base upwardly to construct gradually, therefore namely is replaced along with the concrete construction mud, treats the concrete pouring after the design elevation, a unit trough section construction namelyCompletion.Between various units trough section with the handtailor articulate continual underground steel bar continuous wall, assumes the seal shape.When excavates the folk recipe, the underground continuous wall both keeps off the earth and the waterproofing to be impervious, meanwhile can play the part load-bearing role.Leads the wall commonly used to lead the wall including the muscle rate low reinforced concrete, has the cast-in-place and prefabricates two kinds, at present uses the cast-in-place to be many, the subsoil water level is high when uses the pre-guidance wall to be better.Leads the wall thickness is generally 0.2~0.5m, the depth is generally about 1.2~2.0m, its top should outdo compared to the construction ground 15㎝ above, prevents in the surface water inflow trench, and outdoes the subsoil water level is generally 1.5m; Its bottom surface constructs suitably in the dense ground, behind excavates the backfill part to need stickiness to do the earth lamination ramming.Leads in the wall the horizontal steel bar to have to connect the whole mutually.After leads the wall to do, should promptly Canada suppose the support generally in the wall between, prevented leads the wall in to push under the exogenic process.Leads the wall center position namely underground continuous wall the center, must according to survey the position construction in the plane, in vertical must guarantee vertically, it relates the underground continuous wall directly the precision.To the underground continuous wall wall intensity, the verticality, the concrete slump and so on carry on the quality approval.