Densely-drilled sand-filled vibration-isolation pile row blasting-vibration-resisting structure

Abstract

The invention discloses a densely-drilled sand-filled vibration-isolation pile row blasting-vibration-resisting structure comprising a vibration-isolation pile row, a multi-pore filling material, a waterproof backfill material, a vibration-isolation ditch and waterproof cloth. The vibration-isolation pile row is located in the vibration-isolation ditch located between a tunnel to be built and a protective target. The plane arrangement range of the vibration-isolation pile row should cover the zones which do not meet the explosion safe allowable distance requirement or the protective target safe management distance requirement and is suitable for extending outwards. The direction of the plane of the vibration-isolation pile row is parallel to the side boundary of the tunnel or the vibration-isolation pile row is the linearly arranged around a protective target foundation or a pipeline outline periphery. A densely drilling manner is applied to the plane arrangement of the vibration-isolation pile row, and namely the hole distance is smaller than the pile diameter. The vibration-isolation pile row is densely filled with the multi-pore filling material. The section, close to the ground surface, of the vibration-isolation pile row is backfilled with the waterproof backfill material, and hole openings are covered by the waterproof cloth. By the adoption of the densely-drilled sand-filled vibration-isolation pile row blasting-vibration-resisting structure, through the arranged densely-drilled sand-filled vibration-isolation pile row, measures are taken in the aspects of cutting off and disturbing engineering blasting vibration propagation routes so as to shield and weaken the influence of vibration.

Description

technical field [0001] The invention relates to the technical field of road tunnel construction. Background technique [0002] During the construction of underground structures such as highways and urban road tunnels, when the drilling and blasting method (that is, the method of drilling, charging, and blasting rocks) is used to excavate the chamber, blasting vibration is one of the effects that cannot be eliminated by engineering blasting operations. First, it often becomes the primary environmental hazard. [0003] Blasting vibration will have a serious impact on the safety and normal use of adjacent buildings (structures), cultural relics, slopes, pipelines, or equipment, and may easily cause accidents such as cracking, damage, instability, leakage, and failure, or cause accidents among surrounding people. Uneasiness and discomfort must be strictly controlled. [0004] There are four major influencing factors in the process of blasting vibration generation, propagation ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide an anti-blast vibration structure of densely drilled sand-filled vibration-isolation piles. By setting densely-drilled sand-filled vibration-isolated piles, it starts from cutting off and interfering with the blasting vibration propagation path of the project to solve the problem of shielding and weakening. Technical Issues of Vibration Effects

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