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Construction method for energy-gathered water pressure blasting

A hydraulic blasting and construction method technology, applied in blasting, blasting barrels, earthwork drilling and mining, etc., can solve the problems of surrounding rock damage, difficulty in controlling the peak stress of surrounding rock, low utilization rate of explosive energy and blasthole utilization, etc., to achieve enhanced The fracture surface is formed, the blasting effect is controllable, and the effect of improving energy utilization rate

Pending Publication Date: 2021-12-03
ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing tunneling methods are difficult to control the peak stress of the surrounding rock, and it is easy to cause excessive damage to the surrounding rock under the water wedge effect, resulting in serious over-excavation of the surrounding rock, which makes the energy utilization rate of explosives and blast hole utilization low rate

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  • Construction method for energy-gathered water pressure blasting
  • Construction method for energy-gathered water pressure blasting
  • Construction method for energy-gathered water pressure blasting

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Embodiment Construction

[0054] The present invention will be further described below with reference to the accompanying drawings and exemplary embodiments, wherein the same reference numerals in the accompanying drawings all refer to the same components. Also, detailed descriptions of known arts will be omitted if they are unnecessary to illustrate the features of the present invention.

[0055] The description of the embodiments should be detailed, so that those skilled in the art can realize the technical solution without creativity. Embodiments may be one or more, depending on the specific circumstances to support the claimed scope.

[0056] For the invention of a pair of products, the specific implementation method shall describe in detail the mechanical structure of the product in conjunction with the accompanying drawings, explain the mutual relationship between each component, such as the connection relationship and cooperation relationship between them, and when necessary, also explain its ac...

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Abstract

The invention relates to a construction method for energy-gathered water pressure blasting. The construction method comprises the following steps: forming blast holes in surrounding rock, wherein the blast holes comprise a cut hole, an auxiliary hole, a peripheral hole and a bottom plate hole; processing stemming, water bags, initiating explosive devices and energy-gathered blasting pipes; sequentially installing the first water bag, a first explosive, the second water bag and the hole sealing stemming in the cut hole, the auxiliary hole and the bottom plate hole correspondingly, and additionally installing the energy-gathered blasting pipes in the peripheral hole; and carrying out blasting according to a pre-designed blasting network. By adopting the technical scheme, the effect of reducing the overexcavation amount of tunnel tunneling is achieved, and meanwhile the energy utilization rate of the explosives and the utilization rate of the blast holes are increased.

Description

technical field [0001] The invention relates to the technical field of tunnel excavation, in particular to a construction method of energy-gathering hydraulic blasting. Background technique [0002] With the rapid development of the economy and the continuous development of road construction, the construction of subways and tunnels is also in progress. During engineering blasting, conventional smooth blasting is mostly used at present. The construction principle of conventional smooth blasting is as follows: [0003] In engineering water pressure blasting, since there is water in the blast hole, the shock wave propagating in the water is incompressible to the water, and the explosion energy is transmitted to the surrounding rock of the blast hole through the water with almost no loss, which is beneficial to rock breaking; The “wedge” effect is conducive to further crushing of the rock; the blasthole mud is firmer and denser than the soil, and it is much better than the soil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D3/04F42D1/00F42B3/00E21D9/00
CPCF42D3/04F42D1/00F42B3/00E21D9/006
Inventor 孙晓飞石琦谢锦华徐志宁杨志伟
Owner ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD
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