Comprehensive treatment method for shield waste mud and mixing material-adding device

Abstract

The invention provides a comprehensive treatment method for shield waste mud. The method comprises the following steps: (1) pretreating the waste mud to obtain muddy water, mud and granular waste residues; (2) measuring the sand content of the mud obtained in the step (1), when the sand content is >= 15%, adding a sandy soil curing agent A2 by adopting a mixing material-adding device for consolidation, performing stirring, and performing pressing to prepare a building material; and when the sand content is < 15%, adding a clay curing agent A1 by adopting the mixing material-adding device for consolidation, performing stirring, and performing pressing to prepare a building material; and (3) adding a curing agent into the granular waste residues obtained in the step (1) by adopting the mixing material-adding device, performing stirring, and performing pressing to form a brick. The invention also provides the mixing material-adding device. The method provided by the invention can reduce problems of pollution and land occupation of the waste mud, makes the waste mud obtain secondary utilization, and achieves purposes of having certain economic benefits, saving energy and reducing emission.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling waste residue treatment, and in particular relates to a treatment method and a mixing and feeding device for waste mud generated during shield tunneling. Background technique [0002] In recent years, with the gradual deepening of theoretical research and practical application research on solidified soil technology in my country, there are many domestic cases where solidified soil has successfully replaced traditional materials. For example, when Shenyang City was building a new countryside, it applied solidified soil technology to build more than a thousand kilometers of village and town roads, and the effect was good. In this project, the direct use of local raw soil as building materials can reduce the large-scale mining of sand and gravel, reduce the discharge of engineering waste and the consumption of transportation energy, thereby reducing the cost of the project, which is conduciv...

AI Technical Summary

Problems solved by technology

Due to the large amount of waste mud generated during the construction of shield tunnels, it requires a lot of manpower and material resources to deal with the waste mud, which increases the project cost

At the same time, the storage of these waste mud is also a big problem. It involves the occupation of the site and the pollution of groundwater. At present, there is no completely feasible method to deal with these waste mud

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