Method for preparing post-wall grouting material by utilizing waste amphibole muck through earth pressure shield

Abstract

The invention relates to a method for preparing a post-wall grouting material by utilizing waste amphibole muck through earth pressure shield. The method comprises the following steps: (1) cleaning and drying muck discharged during shield excavation of a amphibole stratum; (2) conveying the muck treated in the step (1) to a screening machine for screening to remove large particles; and (3) replacing part of medium sand in the original post-wall grouting material with the sieved muck, and then adding bentonite, fly ash, cement and water to prepare the post-wall grouting material. The grouting material comprises cement, coal ash, bentonite and screened muck, the treated muck replaces part of river sand in traditional materials, the problem that sand in the Jinan area is difficult to purchaseis solved, and the muck recycling process method is economical and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic building materials, and relates to a grouting material method for preparing walls of an earth pressure shield using waste diorite slag. Background technique [0002] With the continuous development of my country's urban rail transit, subway construction has entered a peak period, and earth pressure balance shield technology is a widely used construction method in subway construction. In the process of earth pressure shield construction, with the continuous excavation of the shield machine, a large amount of muck is inevitably produced, and the transportation of muck requires high transportation costs, and most projects are faced with a large amount of dregs piled up At the same time, the medium sand and mud content in Jinan area is high, and the purchase price is expensive. [0003] In the process of excavating weathered diorite strata, the weathered rock is ground into sandy soil ...

AI Technical Summary

Problems solved by technology

In the process of earth pressure shield construction, with the continuous excavation of the shield machine, a large amount of muck is inevitably produced, and the transportation of muck requires high transportation costs, and most projects are faced with a large amount of dregs piled up At the same time, the medium sand and mud content in Jinan area is high, and the purchase price is expensive

[0003] In the excavation process of the weathered diorite stratum, the weathered rock is ground into sandy soil when the cutter head is excavated. At present, the treatment of these diorite slags is usually carried out, usually transported to the slag for consumption. Not only the transportation cost is high, but also a large amount of muck is piled up

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