Composition for drilling and pouring, preparation method thereof and wall protection mud

Abstract

The invention discloses a composition for drilling and pouring, a preparation method thereof and wall protection mud, and relates to the technical field of wall protection materials. The composition for drilling and pouring comprises a wall protecting agent potassium polyacrylate, a tackifier polyacrylamide, an instant solvent sodium chloride, a precipitator polyaluminum chloride and a stabilizersodium hydroxide; after being dissolved in water, the composition has the advantages of being good in wall protection effect and capable of improving the pile forming quality. The preparation method of the composition for drilling and filling comprises the following steps: uniformly stirring the raw materials in the composition in a closed space to obtain the composition; the preparation method has the advantages of simple preparation steps, easiness in implementation and convenience in batch manufacturing and production. The wall protection mud comprises the composition and water mixed with the composition in use. The wall protection mud has the advantages of being good in wall protection effect and capable of improving the pile forming quality.

Description

technical field [0001] The invention relates to the technical field of retaining wall materials, more specifically, it relates to a composition for drilling and pouring, a preparation method thereof and wall retaining mud. Background technique [0002] At present, in the bridge foundation engineering, the bored pile foundation has occupied an important position. With the development of bored piles to large diameter and high depth, mud retaining wall material has become one of the main research topics of bored pile hole forming technology. In addition to forming a mud skin to protect the hole wall, the mud wall protection material also has the functions of increasing the liquid density in the hole, clearing the drill bit soil, cooling the drill bit and increasing the drilling speed. There are currently three main types of mud retaining materials: water-based mud (WBM), oil-based mud (OBM) and synthetic-based mud (SMB). Water-based mud is currently the most commonly used ret...

AI Technical Summary

Problems solved by technology

[0003] A kind of bentonite wall protection mud in the prior art comprises bentonite, carboxymethyl cellulose, alkali and water, but, because of the principle characteristic of bentonite wall protection mud self, may produce following influence in the wall protection process: Bentonite mud is easy to Delamination and other situations will affect the effect of its retaining wall and easily lead to hole collapse accidents; due to the characteristics of suspended mud and sand, bentonite mud is easy to produce sediment at the bottom of the pile, which increases the resistance of underwater concrete pouring and reduces the flow radius of concrete , the steel cage is exposed, which affects the quality of the pile body

The wall protection effect of the bentonite wall protection mud in the prior art is poor, and the quality of the pile is poor, so there is an urgent need for a material that can improve the quality of the pile and has a good wall protection effect

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