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Construction method for underground diaphragm wall penetrating through super-thick silt layer
The invention provides a construction method for an underground diaphragm wall penetrating through a super-thick silt layer, and relates to the technical field of underground project construction. For constructing the underground diaphragm wall on a project field with the stratum of the super-thick silt layer, grooving quality is different to control, and the problems that the construction efficiency is low, a consumed working period is long, and consequently the project cost is increased exist. The construction method comprises the following steps that firstly, paying offing and grooving are conducted along the central line of an underground diaphragm wall to be constructed; secondly, three-axis cement mixing piles are applied and strook into the two sides of the underground diaphragm wall to reinforce the groove walls; thirdly, a guide wall is built on the three-axis cement mixing piles; fourthly, an open groove is partitioned into a plurality of unit groove sections, holes are drilled in the unit groove sections to a intense weathered layer, when excavation is conducted to a medium weathered layer, a rotary excavating drill is replaced to smash and remove the medium weathered layer and the intense weathered layer, and then detritus is grabbed; fifthly, silt at the bottom is brought out of the unit groove sections through a reverse circulation silt removing system, and slurry is poured into the unit groove sections; sixthly, steel bar cages are installed in the unit groove sections, and concrete pouring of the underground diaphragm wall is conducted.
Construction method for underground diaphragm wall penetrating through super-thick silt layer
The invention provides a construction method for an underground diaphragm wall penetrating through a super-thick silt layer, and relates to the technical field of underground project construction. For constructing the underground diaphragm wall on a project field with the stratum of the super-thick silt layer, grooving quality is different to control, and the problems that the construction efficiency is low, a consumed working period is long, and consequently the project cost is increased exist. The construction method comprises the following steps that firstly, paying offing and grooving are conducted along the central line of an underground diaphragm wall to be constructed; secondly, three-axis cement mixing piles are applied and strook into the two sides of the underground diaphragm wall to reinforce the groove walls; thirdly, a guide wall is built on the three-axis cement mixing piles; fourthly, an open groove is partitioned into a plurality of unit groove sections, holes are drilled in the unit groove sections to a intense weathered layer, when excavation is conducted to a medium weathered layer, a rotary excavating drill is replaced to smash and remove the medium weathered layer and the intense weathered layer, and then detritus is grabbed; fifthly, silt at the bottom is brought out of the unit groove sections through a reverse circulation silt removing system, and slurry is poured into the unit groove sections; sixthly, steel bar cages are installed in the unit groove sections, and concrete pouring of the underground diaphragm wall is conducted.
Construction method for underground diaphragm wall penetrating through super-thick silt layer
JIN FUQIANG (author) / ZHOU DANWEI (author) / TANG YUN (author)
2015-05-13
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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