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Bidirectional linear energy gathering cover tensioning blasting pipe device for coal mine and connecting method

A two-way linear, blasting tube technology, used in mining equipment, earth-moving drilling, discharging machinery, etc., can solve the problems of potential safety hazards, changing the shape of explosives, slow speed, etc., and achieve the effect of fast connection and fixation

Active Publication Date: 2020-02-18
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The D-shaped energy-concentrating tube is divided into upper and lower pieces, which can be slid and fastened. It is necessary to cut off the skin of each emulsion explosive, pour it into the gun barrel, and then inject the emulsion explosive into the tube with a gun with air pressure. During on-site operation, The speed is slow, the efficiency of workers is low, and there are safety hazards in changing the shape of explosives during use

Method used

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  • Bidirectional linear energy gathering cover tensioning blasting pipe device for coal mine and connecting method
  • Bidirectional linear energy gathering cover tensioning blasting pipe device for coal mine and connecting method
  • Bidirectional linear energy gathering cover tensioning blasting pipe device for coal mine and connecting method

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example

[0072] The research has been applied in the 9105 Belt Lane of Qinxin Coal and Electricity Company of Qinxin Group. So far, the installation of the energy-concentrating pipe and its orientation, fixing, and connection devices and methods have achieved good application results. According to the design plan, the cutting depth of the 9105 belt lane is 10m, and five energy-concentrating tubes are installed in each blast hole; the specifications of the energy-concentrating tubes are: length 1.5m, outer diameter 42mm, inner diameter 38mm; the blasting uses coal mine secondary emulsion explosives, and the explosive specifications are : Diameter 35mm, length 200mm.

[0073] According to the construction design process, the specific implementation methods are as follows:

[0074] (1) First use a special drilling rig for slotting holes to drill 6-20m deep blastholes;

[0075] (2) Take multiple 1.5m-3m long energy-concentrating tubes, slide and disassemble the semi-circular tube with fem...

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Abstract

The invention discloses a bidirectional linear energy gathering cover tensioning blasting pipe device for a coal mine and a connecting method. The bidirectional linear energy gathering cover tensioning blasting pipe device comprises a plurality of buckled energy gathering cover blasting pipes, inter-pipe connecting devices, a pipe top end centering device, a pipe tail end anti-skid device and an orientation device. The buckled energy gathering cover blasting pipes are arranged side by side in the length direction, and every two adjacent buckled energy gathering cover blasting pipes are connected through the corresponding inter-pipe connecting device to form a blasting pipe. The pipe top end centering device is arranged at one end of each blasting pipe, the pipe tail end anti-skid device isarranged at the other end of each blasting pipe, and the orientation device is arranged on the pipe tail end anti-skid device. According to the buckled linear energy gathering cover blasting pipes, through the modular design of the inter-pipe connecting devices, the pipe top end centering device, the pipe tail end anti-skid device and the orientation device, orientation, connection and fixation are faster and more accurate in the mounting process.

Description

technical field [0001] The invention belongs to the technical field of blasting devices, and in particular relates to a bidirectional linear energy-gathering cover tensioning blasting tube device and connection method for coal mines. Background technique [0002] When excavating and cutting engineering in rocks, the energy-concentrated blasting technology is used to achieve directional pre-cracking and cutting of rocks, which can make full use of explosive energy to generate directional cracks, control the expansion of blasting cracks towards the set direction, and suppress cracks in unfavorable directions. Reduce the strength and integrity of surrounding rock in non-set directions, protect the stability of surrounding rock in non-set directions, increase the distance between pre-splitting blast holes, and reduce the unit consumption of pre-splitting explosives. The conventional method is to use rock mechanical grooves, Slotted energy-gathering tubes, densely drilled energy-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21C37/00
CPCE21C37/00E21D9/00E21D9/006
Inventor 张国锋
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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