Method for embankment by blasting and silt squeezing on complex soft foundation

Abstract

The invention discloses a method for embankment by blasting and silt squeezing on a complex soft foundation, which is characterized by: taking advantage of the characteristics of ocean tide rising and falling, using the depth of covering water instead of a resistance line in blasting, applying most energy onto the top face of the complex soft foundation, squeezing down the complex soft foundation, adopting the combined action of blasting at a dyke head or on two sides of a dyke and other various blasting modes at the same time, continuously squeezing down jackstones by using the gravity of the jackstone dyke body under the action of explosion shock to remove the silt soft foundation under the jackstones, allowing the stone layer of the dyke body to fall onto bottom to form a sea dyke cross-section meeting design requirements, allowing two sides of the dyke body to fall onto the ground completely with certain ground width, and ensuring the stability of the dyke body; and avoiding landslip frequently occurring in on-site backfill and direct random sea dyke fill, as well as increasing embankment construction speed, reducing cost by 50 to 90 percent and achieving considerable economic benefits compared with a processing method which is to first excavate soft foundation and then fill back.

Description

technical field [0001] The invention relates to a method for blasting and squeezing silt and building an embankment, in particular to a method for blasting and squeezing and building an embankment on a complex soft foundation. Background technique [0002] At present, in the process of reclamation and embankment construction, complex soft bases are usually encountered. The structure of these complex soft bases mainly has the following three forms: ①The upper stone cube (or sand and gravel) and the lower silt layer (such as figure 1 shown); ②The stone cube (or gravel layer) in the middle of the silt layer (such as figure 2 shown); ③ silt layers and stone cubes (or gravels) exist alternately (such as image 3 shown); if the riprap is directly loaded on the base layer to build an embankment, disorderly and unstable sliding or excessive settlement of the embankment will easily occur, resulting in waste of stone materials, resulting in increased follow-up processing costs, and ...

AI Technical Summary

Problems solved by technology

However, this conventional treatment method requires the use of large excavators or professional dredgers. The construction on the water is difficult and the progress is slow. The increase will inevitably increase the project investment cost

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