Energy collecting type explosive charged blasting pipe for tunnel periphery hole

Abstract

The invention discloses an energy collecting type explosive charged blasting pipe for a tunnel periphery hole. The energy collecting type explosive charged blasting pipe for the tunnel periphery holecomprises a pipe body and a buckling cover, wherein a stripy opening lengthways penetrates the pipe body; the buckling cover covers the stripy opening and forms a chamber for filling explosive with the pipe body; the left side and the right side of the pipe body are sunken into the pipe body, and stripy energy collecting cavities are formed in the outer wall of the pipe body through the sunken parts of two sides along the pipe body; center points of energy collecting cavities in two sides are connected to a center point of the pipe body under the same cross section, and an included angle formed by intersecting at the center point of the pipe body is equal to the radian of a tunnel. With the adoption of the energy collecting type explosive charged blasting pipe for the tunnel periphery hole, the space between periphery holes is increased during excavating the tunnel, so that the workload in drilling is decreased, and the back break quantity of the tunnel periphery is increased.

Description

Technical field [0001] The invention belongs to the technical field of tunnel construction control, and in particular relates to a blasting tube used for the energy-accumulating charge of the surrounding eye of the tunnel. Background technique [0002] In tunnel drilling and blasting construction, the phenomenon of over-under-excavation has always been a problem that plagues construction companies. Over-excavation not only increases the amount of slag and concrete backfill in the tunnel, but also causes certain difficulties in the subsequent processes and increases costs. It will also affect the quality and progress of the project. Under-excavation requires secondary treatment. Under-excavation treatment is more likely to result in over-excavation. At the same time, it increases blasting equipment and transportation costs, which affects the construction progress and increases engineering costs. [0003] In the current tunnel drilling and blasting method construction, generally red...

AI Technical Summary

Problems solved by technology

However, in the application process of ordinary energy-concentrating tubes, affected by the tunnel curve, if the distance is greater than 80cm, the tunnel will be under-excavated, thereby limiting the use of the energy-concentrating effect in tunnel blasting

At the same time, the existing energy-concentrating blasting tube adopts the buckle cover type, which causes the disadvantages of difficult processing and high cost.

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