Pipeline groove backfill biological enzyme immobilization method

Abstract

The invention discloses a pipeline groove backfill biological enzyme immobilization method which is characterized by comprising the steps that the bottom of a groove is backfilled with a biological enzyme mixture A, and a biological enzyme dilution solution with a preset concentration is applied to form a pipeline cushion layer, wherein the biological enzyme mixture A is formed by mixing silt, crushed stone and cement according to a preset proportion; a pipeline is laid above the pipeline cushion layer; the periphery of the pipeline is backfilled with a biological enzyme mixture B, and the biological enzyme dilution solution is applied, wherein the biological enzyme mixture B is formed by mixing coarse sand, silt, crushed stone and clay; and the top of the pipeline is backfilled and compacted. According to the pipeline groove backfill biological enzyme immobilization method, differential settlement and pipeline deformation of the pipeline groove can be reduced, the impermeability of the pipeline groove and the hardening integrity of a pipeline wrapping material are improved, and the phenomena of water and soil loss and collapse around the pipeline due to water leakage of the pipeline are prevented.

Description

technical field [0001] The invention relates to the field of pipeline construction, in particular to a biological enzyme solidification method for backfilling pipeline grooves. Background technique [0002] With the development of society and economy, municipal pipelines, such as water supply and drainage pipelines and gas pipelines, are related to people's livelihood. The improvement of pipeline construction quality can effectively reduce the adverse impact on the environment caused by pipeline rework and repair due to quality problems, roadbed washing and collapse, and leakage of harmful and toxic pollutants. . [0003] The undisturbed soil is compacted after the excavation of the traditional pipeline trench, and the soft foundation treatment is carried out for some bearing capacity that does not meet the requirements. The trench backfill mostly uses medium and coarse sand, crushed stone chips, gravel with a maximum particle size of less than 40mm, or original soil that m...

AI Technical Summary

Problems solved by technology

The design of rigid pipelines has higher requirements on the bearing capacity of the foundation. Under the action of external force and its own gravity, if the foundation settles unevenly, the interface will be damaged or the pipeline interface will leak, which will cause water and soil loss, and the empty roadbed will cause collapse. Phenomenon

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