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Tunnel tunneling energy gathering water pressure smooth blasting device and method

A technology of smooth blasting and tunneling, which is applied in blasting, tunneling, earth-moving and other directions, can solve the problems of cracks in the surrounding rock, over-excavation, and long drilling time, etc., and achieve the effect of saving costs.

Inactive Publication Date: 2016-11-09
何广沂 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of conventional smooth blasting, such as too densely laid holes, long drilling time, easy to cause cracks in the surrounding rock, and frequent over-excavation at the part of the drug roll. method

Method used

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  • Tunnel tunneling energy gathering water pressure smooth blasting device and method
  • Tunnel tunneling energy gathering water pressure smooth blasting device and method

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Such as Figure 1-2 Shown, the energy-gathering water pressure smooth surface blasting device is made up of four parts: energy-gathering tube 1, explosive, transmission line and detonation detonator.

[0037] The energy-gathering pipe 1 is made of non-metallic PVC material, and its length can be cut according to the depth of the blast hole. The energy-gathering tube 1 is composed of two half-walled tubes 2 with the same structure. The groove 4 is aligned with the excavation contour surface. After the two half-wall pipes 2 are fastened together, the angle between the bending part of one half-wall pipe and the fastening groove 3 of the other half-wall pipe is 8°-10°, so that Appropriate adjustments can be made between the two half-walled tubes 2 .

[0038] The explosive in the shaped tube 1 is an emulsion explosive. The cross-section formed by ...

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Abstract

The invention discloses a tunnel tunneling energy gathering water pressure smooth blasting device and method. The energy gathering water pressure smooth blasting device comprises explosive, an explosion propagation wire and a detonator. An energy gathering pipe formed by two half wall pipes which are the same in shape and are buckled with each other is filled with the explosive. Each half wall pipe is in an M shape, one end of each M-shaped half wall pipe is inwards bent, the other end of each M-shaped half wall pipe is connected with one side groove wall of a U-shaped buckling groove, and the opening direction of each buckling groove and the bending direction of the bent end of the corresponding half pipe wall are the same. The center of the top of each half wall pipe is recessed inwards to form an energy gathering groove. The blasting method comprises the steps that after a first water column layer formed by a water bag is placed at the position, close to the bottom of a shot hole cavity, in the shot hole cavity, the energy gathering water pressure smooth blasting device is placed, a second water column layer formed by a water bag is placed closely attached to the energy gathering water pressure smooth blasting device, and finally a backfill blockage layer is placed. According to the tunnel tunneling energy gathering water pressure smooth blasting device and method, polishing blasting shot holes can reduced by 50%, the construction period is shortened, insufficient digging is avoided while excessive digging is prevented, and the economic benefits are increased.

Description

technical field [0001] The invention relates to a specific application of blasting technology, in particular to a tunnel excavation energy-gathering water pressure smooth surface blasting device and a blasting method. Background technique [0002] Smooth surface blasting refers to a controlled blasting technology that achieves the contour line after blasting conforms to the design requirements and the air surface is smooth and regular through the correct selection of blasting parameters and reasonable construction methods. It also supports the principle of the new Austrian method. One of the important technologies. Compared with the traditional method of tunnel excavation, smooth blasting technology can prevent new cracks or even caves in the rock after blasting, which will affect the stability of surrounding rock and avoid landslides; secondly, it can prevent under-cut or over-break after blasting, If under-excavation, supplementary blasting is required, prolonging the dri...

Claims

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Application Information

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IPC IPC(8): F42D3/04F42D1/00E21D9/00
CPCF42D3/04E21D9/006F42D1/00
Inventor 何广沂刘海波苏庆国王树成张进增魏华昌
Owner 何广沂
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