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Deep hole blasting process in frost weathering bedrock segment

A deep hole blasting and bedrock technology, applied in blasting and other directions, can solve the problems of high labor intensity of workers, high consumption of blasting materials, slow cycle progress, etc., to ensure construction safety and quality, low labor intensity of workers, and reduced construction costs. Effect

Inactive Publication Date: 2012-08-22
中煤第一建设有限公司第四十九工程处
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following disadvantages: ① manual construction, high labor intensity, low excavation efficiency, and slow cycle progress; ② shallow hole blasting construction, less cycle footage, stubble between the peripheral hole and the side of the well after blasting, or blasting in stages, which is very troublesome; ③ Explosives, detonators and other blasting materials consume a lot, and the cost is high; ④ The surrounding rock of the side of the well is exposed for a long time, which is prone to chipping and has many safety hazards;
[0003] Using manual construction or shallow hole blasting construction is time-consuming, laborious, wasteful of materials, and unsafe, and cannot meet the requirements of fast, high-quality, and efficient construction of shafts

Method used

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  • Deep hole blasting process in frost weathering bedrock segment
  • Deep hole blasting process in frost weathering bedrock segment
  • Deep hole blasting process in frost weathering bedrock segment

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Embodiment Construction

[0025] With reference to the accompanying drawings, a medium-deep hole blasting process for freezing and weathering bedrock sections, the process steps are: ①Draw the blast hole coordinate position diagram, number each blast hole, ②Determine the diameter and depth of each blast hole, ③According to each The coordinate position of the blast hole and the specified diameter and depth are drilled. ④Determine the charge uncoupling coefficient of each blast hole, determine the diameter of the explosive coil, ⑤Determine the length of the explosive coil according to the amount of explosive in each blast hole, ⑥ Fill the explosives according to the number of explosives used in each blasting hole, ⑦install a detonator into each blast hole, ⑧determine the detonator segment number according to the blasting sequence of each blasting hole, and use the detonator detonating wire for each detonator according to the segment number of each detonator Connect with the detonator, ⑨block the blasting h...

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Abstract

The invention discloses a blasting process for vertical shaft construction, and in particular relates to a medium-length hole blasting process suitable for rapid construction when vertical shafts are constructed in frozen weathered bedrock sections, frozen gravel layer sections and frozen calcareous clay sections. The method comprises the following process steps of 1: drawing a blast-hole coordinate position graph and numbering every blast hole; 2: determining the diameter and depth of every blast hole; 3: drilling according to the coordinate position and specified diameter and depth of everyblast hole; 4: determining the charging uncoupling factor of every blast hole and the diameter of explosive cartridges; 5: determining the length of the explosive cartridges according to the quantityof explosives used for the blast holes; 6: packing the explosives according to the quantity of explosives used for the blast holes; 7: installing priming detonators in the blast holes; 8: determiningthe segment number of the detonators according to the blasting sequence of the blast holes and using detonator priming conductors and a priming apparatus to connect all the priming detonators according to the segment number of the priming detonators; 9: plugging the blast holes; and 10: pressing the priming apparatus to initiate explosion after personnel are evacuated.

Description

Technical field [0001] The invention relates to a vertical well shaft construction blasting process, in particular to a medium-deep hole blasting process suitable for rapid construction when a vertical shaft shaft is constructed in a frozen weathered bedrock section, a frozen gravel layer section and a frozen solid calcareous clay section. Background technique [0002] At present, in the construction of the frozen and weathered bedrock section, the frozen gravel section and the frozen solid calcareous clay section of the shaft shaft, manual construction or shallow hole blasting construction is mostly used. There are the following shortcomings: ①Manpower construction, high labor intensity of workers, low excavation efficiency, and slow cycle progress; ②Shallow hole blasting construction, less cycle footage, after blasting, there is stubble between the surrounding holes and the well bank or need to be blasted in stages, which is very troublesome; ③Explosive materials such as explos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D3/04
Inventor 赵京虎范聚朝杨星林靳丽娟赵静
Owner 中煤第一建设有限公司第四十九工程处
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