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Blast hole charging structure and method for deep-hole bench blasting of layered rock mass mixed up with soft rock strata and hard rock strata

A technology of step blasting and blast hole charging, which is applied in the field of blasting, can solve the problems of high blasting cost and poor blasting effect, and achieve the effects of less difficult work, lower loading and transportation costs, and reduced blasting workload

Pending Publication Date: 2017-11-07
广东锡源爆破科技股份有限公司
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Problems solved by technology

[0005] In view of this, in order to solve the technical problems of poor blasting effect and high blasting cost of soft and hard interlayer rock mass in the prior art, the present invention aims to provide a deep soft and hard interlayer rock mass with good blasting effect and low blasting cost. Bore hole charge structure and method of hole step blasting

Method used

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  • Blast hole charging structure and method for deep-hole bench blasting of layered rock mass mixed up with soft rock strata and hard rock strata

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Embodiment Construction

[0030] Such as figure 1 As shown, the present embodiment provides a blasting structure of a deep hole step in a soft and hard interlayered rock mass, including multi-layer hard rock formations 20 and multi-layer soft interlayers 10, and the hard rock formations 20 and weak interlayers 10 are layered from top to bottom. Alternately distributed; each hard rock formation 20 is provided with a charge section 40 at a relative position, and the charge section 40 is filled with gunpowder; adjacent charge sections 40 are provided with a packing section 30, and the packing section 30 is filled with gun mud. Both ends of the filling section 30 enter the corresponding hard rock formation 20 , and the bottom hard rock formation 20 is provided with a hole bottom filling section 50 .

[0031] By setting the charge section 40 on the hard rock formation 20, the high-pressure gas generated when the charge section 40 is detonated is limited to the hard rock formation 20, preventing the high-pre...

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Abstract

The invention provides a blast hole charging structure and method for deep-hole bench blasting of layered rock mass mixed up with soft rock strata and hard rock strata. The layered rock mass comprises the multiple hard rock strata and the multiple soft rock strata, and the hard rock strata and the soft rock strata are distributed from top to bottom stratum by stratum alternately; the relative positions in the hard rock strata are provided with charging sections, and the charging sections are filled with explosives; a filling section is arranged between every adjacent charging sections and filled with stemming, and the two ends of each filling section are arranged in the adjacent hard rock strata; and the hard rock stratum on the lowermost layer is provided with a hole bottom filling section. The blast hole charging structure is good in blasting effect and low in blasting cost.

Description

technical field [0001] The invention relates to the field of blasting, in particular to a blast hole charge structure and method thereof for deep hole step blasting of soft and hard layered rock mass. Background technique [0002] With the continuous improvement of drilling rigs and loading and transportation equipment, the continuous improvement of blasting technology, and the continuous improvement of the accuracy of blasting equipment, the superiority of deep hole steps has become more and more obvious, and its application fields have been continuously expanded. It is used in rock blasting engineering in technical fields such as open-pit mining, infrastructure construction, water conservancy and hydropower engineering, and earthwork excavation. Because the quality of blasting directly affects the cost of rock mining, transportation and vibration safety, it determines the economic benefits of blasting projects. In order to improve the economic benefits and safety of steps,...

Claims

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Application Information

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IPC IPC(8): F42D1/08F42D3/04
CPCF42D1/08F42D3/04
Inventor 蒲成志杨仕教郑建礼姜宝金朱忠华相志斌彭贯军
Owner 广东锡源爆破科技股份有限公司
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