Construction method of cement-soil-rock gravity wall with composite mixing of bucket hob wheel

Abstract

The invention discloses a bucket hob wheel and cement stirring combined earth-rock gravity wall construction method. Hobs are installed on a mechanical rotating arm of a track hydraulic bucket excavator, and the hobs are arranged into one group or a plurality of groups. When a grid bucket of the track hydraulic bucket excavator enters a soil layer to excavate soil, a slurry trolley is installed on the side of an excavated pit, a slurry pipe stretches out from the slurry trolley, an outlet of the slurry pipe is aligned to the excavated pit, slurry in the slurry trolley enters the slurry pipe through a high pressure slurry pump, and the hobs are driven by a hydraulic driving wheel type hob cutting machine to work. A bucket hob wheel and cement stirring combined earth-rock gravity wall construction technology has wide stratum adaptation. The bucket hob wheel and cement stirring combined earth-rock gravity wall construction can be further combined with various steel piles and concrete prefabricated piles inserted into an earth-rock gravity wall to form a composite underground continuous wall with multiple effects, a waterproof curtain function and a soil-proof anti-shearing function.

Description

technical field [0001] The invention relates to a construction method, in particular to a method for constructing a gravity wall of cement, earth and stone with a hob mounted on a mechanical swing arm of a crawler hydraulic bucket excavator to facilitate construction. Background technique [0002] At present, various foundation enclosure construction techniques widely used in the field of civil engineering mainly include bored pile enclosure walls, cement mixing pile enclosure walls, SMW curtain wall technology, etc. [0003] Among them, the retaining wall of cast-in-place bored piles is a type of soil retaining pile type that is widely used. It is mostly used in foundation pit engineering with a pit depth of 7-15m. There are 8-9m cantilever pile enclosure walls in areas with better soil quality in northern my country, and the cantilever pile structure in soft soil areas cannot exceed 5m. The characteristics of the wall supported by bored piles are: no vibration, no noise a...

AI Technical Summary

Problems solved by technology

In actual construction, poor control of cement-soil strength will lead to instability of the foundation pit; it is not easy to use cement-soil maintenance wall as the outer formwork of the basement side wall, and a certain amount of backfill space is required, so it is not suitable for use under limited site conditions; enclosure Structural deformation is larger than the former two enclosures

When the H-shaped steel is pulled out, there is a large vibration and noise, and the enclosure wall is deformed after being pulled out

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