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High slope blasting excavation dust falling method

A technology for dust reduction and slope, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve problems such as not being raised, and achieve the effects of facilitating repair and maintenance, reducing construction costs, and reducing dust.

Inactive Publication Date: 2020-05-19
CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a method of blasting and excavating dust on high slopes has not been proposed.

Method used

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  • High slope blasting excavation dust falling method
  • High slope blasting excavation dust falling method
  • High slope blasting excavation dust falling method

Examples

Experimental program
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Effect test

Embodiment

[0058] The dam site of Huangzangsi Water Conservancy Project in Heihe River, Qinghai Province is 25km away from Qilian County, Qinghai Province. Bottom hole dam section and power generation diversion dam section, etc.) are Class 2 buildings, and the powerhouse behind the dam does not participate in water retaining, and is a Class 4 building.

[0059] The dead water level of Huangzangsi Reservoir in Heihe, Qinghai is 2580.00m, and the corresponding dead storage capacity is 61 million m3 (effective); the normal water storage level is 2628.00 m, the effective storage capacity below the normal water storage level is 333 million m3, and the adjusted storage capacity is 295 million m3; the design flood water level is 2628.00 m , the verified flood level is 2628.70m, the total storage capacity of the reservoir is 403 million m3 (original), the flood control storage capacity is 080 million m3, and the installed capacity of the power station is 49MW.

[0060] According to the excavatio...

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Abstract

The invention provides a high slope blasting excavation dust falling method. The high slope blasting excavation dust falling method comprises the steps: 1, a left bank anchoring platform and a right bank anchoring platform are sequentially arranged on a dam of a to-be-subjected-dust-falling dam site area; 2, a bearing cable is installed on the cross-domain to-be-subjected-dust-falling dam site area above the left bank anchoring platform and the right bank anchoring platform; 3, a rotary nozzle is arranged on the bearing cable, and the horizontal movement of the rotary nozzle is horizontally adjusted through a left bank traction cable and a right bank traction cable; and 4, dust falling is conducted on the blasting excavation area of the high slope through rotary spraying of a rotary sprayhead in a rain mist type precipitation mode. According to the technical scheme, the air quality of a construction area is improved, the construction environment is improved, the occupational health ofconstructors is guaranteed, and the construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of earthwork blasting excavation engineering, and in particular relates to a method for reducing dust by blasting excavation on high slopes. Background technique [0002] Existing high slope excavation dust reduction technologies include: sprinkler dust reduction and fog cannon dust reduction. The former lacks one-time coverage and the dust reduction effect is poor; the sprinkling power and the amount of watering are difficult to control, and the small amount of watering cannot achieve the effect of dust reduction; the maintenance cost of consumables, manpower and material resources is high; the dust reduction effect of water sprinkling evaporates quickly in summer, and the dust reduction effect is very limited; winter construction sprinkling It is easy to cause road icing phenomenon again, there is bigger potential safety hazard. When the latter is used, it is necessary to adjust the matching relationship ...

Claims

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Application Information

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IPC IPC(8): B01D47/06
CPCB01D47/06
Inventor 陈敦刚张刚李建文潘新波陈义新
Owner CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD
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