Long-distance deep and narrow pipe ditch stonework excavation and protection method

Abstract

The invention discloses a long-distance deep and narrow pipe ditch stonework excavation and protection method which comprises the following steps: S1, current situation investigation: firstly, investigating a deep and narrow pipe ditch construction part through a construction drawing to find out existing underground pipelines and other embedded equipment; s2, existing defects of buildings, dwellings and the like close to the outside of the pipe ditch excavation area range are marked manually; s3, determining excavation side lines on the two sides of the pipe trench according to the central point of the surveying and setting-out line, and determining the positions of the side lines according to the excavation depth of the pipe trench; s4, blasting parameters are determined according to the large hole pitch and the small row pitch; s5, the row distance and the explosive load between the first blasting drill holes in each layer are adjusted according to needs; according to the long-distance deep and narrow pipe ditch stone excavation and protection method, the construction progress can be accelerated, meanwhile, flying stones generated by blasting can be protected, the construction cost can be reduced, the construction period can be shortened, and the construction requirement can be met.

Description

technical field [0001] The invention relates to the technical field of municipal foundation construction, in particular to a stonework excavation and protection method for a long-distance deep and narrow pipe ditch. Background technique [0002] Conventional stonework excavation method of deep and narrow pipe ditch can directly use hand-pneumatic drill drilling and blasting + excavation equipment for construction when the site is not limited and there are no buildings or other influences in the surrounding area; the site is limited and the surrounding When buildings and populations are densely populated, static blasting and mechanical crushing are generally used for construction. The traditional use of manual wind drill drilling and blasting + excavation equipment for construction has relatively large limitations, blasting protection is difficult, and the direction of flying rocks is difficult to control. There are certain safety hazards, and static blasting + mechanical cru...

AI Technical Summary

Problems solved by technology

The traditional use of manual wind drill drilling and blasting + excavation equipment for construction has relatively large limitations, blasting protection is difficult, and the direction of flying rocks is difficult to control. There are certain safety hazards, and static blasting + mechanical crushing construction, the cycle is longer , The construction efficiency is low and cannot meet the needs of use

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