Waterproof Drive Unit For SMW Construction

Drive Unit for SMW Construction

As a construction method for cut-off walls and retaining walls, mixing self-hardening slurry in-situ with native soil (SMW) is also called column-type concrete wall construction method. After reaching the predetermined design depth, cement slurry is injected into ground through swivel device in drive unit and hollow stem whilst multi-shaft auger is withdrawn, making cement slurry to be fully mixed with native soil. With in-situ forced mixing of cement slurry & native soil and insertion of reinforced elements such as H beam into not fully hardened soil mixing wall, a continuous structure like diaphragm wall will be formed after the hardening of soil mixing wall, which can be used as a retaining and lateral waterproof structure of foundation pits with the advantages of high water resistance and strength of reinforced elements. Reinforced elements can be retrieved for reuse after the construction.

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