Grabbing, drilling and punching combined underground continuous wall grooving construction method

Abstract

The invention provides an underground continuous wall grooving method under the soft soil and rock stratum combined geological conditions. The underground continuous wall grooving method comprises performing preparation work, wherein the preparation work comprises measurement and positioning, wall guide construction, division of groove sections of the underground continuous wall and slurry preparation; grabbing and digging the upper portion soft soil in the groove sections after slurry is injected into the groove sections and enabling the slurry to be added into groove holes along with unearthing; performing drilling and cutting on bottom hard rock stratums in the groove sections; breaking up the drilled hard rock stratums through a square hammer punching machine and performing groove repair; performing hole cleaning and hole cleaning acceptance by a slurry circulation method. According to the grabbing, drilling and punching combined underground continuous wall grooving construction method, grabbing, drilling and punching are combined with each other, grooving construction is performed on the different hardness of rock stratums through different constriction machines under the condition that the quality of the underground continuous wall grooving construction is ensured, and accordingly the construction capability of various common machines is fully utilized and the construction progress and quality of grooving is ensured; the influence on the surrounding environment of the punching grooving vibration can be effectively reduced; an expensive underground continuous wall groove milling machine does not need to be utilized and accordingly the construction cost can be effectively reduced.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a method for groove-forming construction of an underground continuous wall. Background technique [0002] In recent years, underground diaphragm walls have been widely used in our country. Under the geological conditions where the upper part is soft soil and the lower part is rock strata, the construction methods for forming grooves in underground diaphragm walls mainly include: one is the method of using a slot milling machine. The number of equipment is very small, and the price is expensive; the other is to use a grab grooving machine combined with a drilling machine (or punching machine) for grooving construction, and use a grab grooving machine for construction on the upper soft soil, which is faster Fast and economical and reasonable, but when forming holes in the lower hard rock formation, the construction speed is slow and the work efficiency is not high if the drilli...

AI Technical Summary

Problems solved by technology

[0002] In recent years, underground diaphragm walls have been widely used in our country. Under the geological conditions where the upper part is soft soil and the lower part is rock strata, the construction methods for forming grooves in underground diaphragm walls mainly include: one is the method of using a slot milling machine. The number of equipment is very small, and the price is expensive; the other is to use a grab grooving machine combined with a drilling machine (or punching machine) for grooving construction, and use a grab grooving machine for construction on the upper soft soil, which is faster Fast and economical, but when forming holes in the lower hard rock formation, the construction speed is slow and the work efficiency is not high if the drilling machine (or punching machine) is used

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