Deep hole blasting construction method for high slope under complicated environment

A construction method and complex environment technology, applied in the field of engineering blasting and rock mechanics, can solve the problems of insufficient control of blasting vibration and blasting scatter, unfavorable, economic losses, etc., to reduce the hazards of blasting vibration and blasting flying rocks, and facilitate operation , Reduce the effect of secondary disasters

Inactive Publication Date: 2017-08-08
HOHAI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

The existing construction technology of deep hole blasting on high slopes in complex environments usually opposes the harmful control of secondary disasters,

Method used

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  • Deep hole blasting construction method for high slope under complicated environment
  • Deep hole blasting construction method for high slope under complicated environment
  • Deep hole blasting construction method for high slope under complicated environment

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with specific examples.

[0041] like figure 1 As shown, the slope height of a certain slope blasting project is 15-22m, the blasting width is 8-15m, and the final slope angle is 70°, which can be divided into excavation area 1 and retained rock mass 2. The slope is limestone rock, moderately weathered in the upper part and weakly weathered in the lower part, with massive structure and well-developed bedding, belonging to medium hard rock. In the high slope explosion area, many houses 3 on the slopes along the line are brick-concrete structures with a long history. The foundation elevation of house 3 is lower than the bottom elevation of the blasting excavation, and it is integrated with the mountain, and the nearest distance to the blasting point is only 25m. At the same time, about 50m in the direction of the resistance line, there are four factory buildings 4 under construction, which are reinforc...

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Abstract

The invention discloses a construction method for deep hole blasting on a high slope in a complex environment, which comprises the following steps: 1) drafting an overall blasting construction plan, 2) calculating the maximum amount of charge in a section, 3) reasonably determining blasting technical parameters, 4) Drilling, 5) charge and blockage, 6) connection to the detonation network and detonation, 7) blasting effect check and vibration test; adopt "layering in the hole, slight difference inside and outside the hole, multiple sounds in one hole, and charge the air column at intervals" "blasting method, the blasting technical parameters include blasting hole diameter, hole depth, hole spacing, row spacing, explosive unit consumption and single hole charge, the drilling equipment is a self-propelled medium and deep hole drilling rig, and the charge structure is an air column spacer medicine. The invention adopts the shock absorption measures of the air column spaced at the bottom of the hole and the uncoupled charge structure to control the blasting vibration, monitors the blasting vibration for each blasting, and optimizes the blasting parameters in time, effectively guiding the complex environment such as adjacent buildings and residential areas. Under blasting construction.

Description

technical field [0001] The invention relates to a construction method for high slope deep hole blasting in a complex environment, and belongs to the technical field of engineering blasting and rock mechanics. Background technique [0002] With the vigorous development of economic construction, my country's infrastructure construction is changing with each passing day. The number of construction projects such as industrial and civil buildings, mining and water conservancy and hydropower projects is increasing. High slope projects in my country's complex environment, especially rocky high slope projects, are facing a lot of opportunities and challenges. [0003] Blasting technology has been widely used in slope engineering such as industrial and civil construction, open-pit mining and water conservancy and hydropower engineering. The complex blasting environment has become more and more an obstacle in engineering construction. The blasting of high slopes in a complex environm...

Claims

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Application Information

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IPC IPC(8): F42D1/00F42D3/04
CPCF42D1/00F42D3/04
Inventor 孔洋朱珍德高朋飞马国强陈瑞罗志华
Owner HOHAI UNIV
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