Pile-spanning waterproof heavy curtain combined pile side sleeve valve pipe grouting and water stopping construction method

Abstract

The invention discloses a pile-spanning waterproof heavy curtain combined pile side sleeve valve pipe grouting and water stopping construction method. According to the key points of the technical scheme, the method comprises the following steps that a, surveying and setting out are conducted, specifically, the pile positions of slope protection piles are determined and marked, the positions of waterproof heavy curtains are determined and marked, and the slope protection piles and the waterproof heavy curtains are arranged alternately; b, holes are formed in the slope protection piles; c, reinforcement cages with sleeve valve pipes on the two sides are hoisted and placed; d, concrete is poured to form the slope protection piles, and pile body maintenance of the slope protection piles is conducted; e, the pile-spanning waterproof heavy curtains are constructed to form waterproof heavy curtain piles; f, the sleeve valve pipes on the two sides of the slope protection piles are subjected togrouting, plugging and reinforcing; and g, the waterproof heavy curtain piles are maintained. The purpose of conveniently filling leakage between the waterproof heavy curtains and the slope protection piles is achieved.

Description

technical field [0001] The invention relates to the field of geotechnical engineering construction, and more specifically relates to a construction method for water-stop water-stop curtain combined with pile-side sleeve valve pipe grouting between piles. Background technique [0002] Due to the limitation of stratum conditions or for the purpose of protecting groundwater resources, some foundation pit support projects need to use water-stop curtains instead of precipitation. [0003] Among the commonly used groundwater stop methods for building foundation pit slopes at present, methods such as inter-pile jetting piles, inter-pile stirring and spraying piles, and inter-pile stirring piles are to construct slope protection piles first, and then place them at a certain position outside the center of the piles or the axis between the piles. The construction of rotary grouting piles, mixing piles, mixing piles, etc. forms a water-stop curtain, which is used for retaining soil and...

AI Technical Summary

Problems solved by technology

It has the advantages of low equipment vibration, low noise, small impact on adjacent buildings, fast construction progress, and low cost. However, the construction method of water-stop curtain combining a water-stop curtain pile with slope-protection piles between the slope protection piles has the disadvantages of slope protection. If the contact surface between the pile and the water-stop curtain pile is weak or the verticality is deviated, it is easy to cause leakage between the water-stop curtain and the slope protection pile, and it is not suitable to deal with it, which will bring great inconvenience to the subsequent construction

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