Combined dust settling method for large-area excavation and explosion in water conservancy and hydropower project

Abstract

The invention provides a combined dust settling method for large-area excavation and explosion in a water conservancy and hydropower project. The method comprises the following steps: 1) before detonation, injecting water into blastholes; 2) installing a pressurized water pump and a plurality of groups of high pressure spray gun; 3) arranging river-crossing water spraying pipes at the upper stream and lower stream of a riverway located in an explosion area; 4) spraying water to wet the ground of the explosion area before detonation; 5) after detonation, as water injected into the blastholes exerts an inhibitory effect on produced smoke, immediately starting the plurality of groups of high pressure spray gun for water spraying so as to cover rising smoke dust; and 6) opening the river-crossing water spraying pipes at the upper stream and lower stream of the riverway to form a water curtain so as to finish effective dust settling of dust clouds produced during large-area excavation and explosion in the water conservancy and hydropower project. The combined dust settling method for large-area excavation and explosion in the water conservancy and hydropower project can overcome problems of dust, toxic gas and other harm caused by large-area open-air explosion in the water conservancy and hydropower project and is economic, environment-friendly, rapid and effective.

Description

technical field [0001] The invention relates to a dust suppression method used in blasting, in particular to a large-area excavation blasting combined dust suppression method used in water conservancy and hydropower projects. Background technique [0002] In the construction of water conservancy and hydropower projects, the excavation volume of earth and rock is very large. Construction sites such as ship locks, dam abutments, and foundation pits all involve large-scale open-air blasting, which will produce a large amount of dust, toxic and harmful gases and other environmental hazards. With the increasingly serious domestic smog and environmental protection issues, people pay more attention to it, and the adverse impact of large-scale open-air blasting on the environment cannot be ignored. Due to the long construction period and large excavation volume, water conservancy and hydropower projects have become the focus of environmental protection in the field of engineering co...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a large-area excavation and blasting combined dust reduction method for water conservancy and hydropower projects, which can solve the problems of dust, toxic gases and other hazards during large-area open-air blasting of water conservancy and hydropower projects, and is economical, environmentally friendly, fast and effective

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