Dust suppression method of slope excavation

Abstract

The invention relates to a dust suppression method of slope excavation. The dust suppression method of slope excavation comprises the following steps of step 1, arranging a high water level reservoirwith height of 250 m from the ground near dam abutments on the two banks; step 2, arranging a centrifugal water pump on the high water level reservoir and connecting the centrifugal water pump with awater source through a pipeline; step 3, placing a plurality of steel wire ropes above an excavation area between the dam abutments on the two banks; and step 4, connecting a plurality of spraying water pipes with a water tank, connecting the water tank with the high water level reservoir, fixedly connecting each spraying water pipe with each steel wire rope, placing each spraying water pipe abovethe excavation area, laying a plurality of rotating nozzles, shower heads, valves and the like on each spraying water pipe. The dust suppression method of slope excavation has the superior effects that the operation of a dust suppression technology can obtain a good dust suppression effect, the construction environment is greatly improved so that a site construction personnel obtain a good working environment, and the occupational health of the construction personnel is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of dust suppression, and in particular relates to a dust suppression method for slope excavation. Background technique [0002] Large-scale hydropower projects are generally located in high mountains. The terrain on both sides of the dam site is steep, forming a narrow "V"-shaped valley. During the excavation construction of the high and steep slope of the dam abutment, dust is likely to be generated during drilling, blasting, and slag discharge, especially during the blasting process. Rolling down from top to bottom, a large amount of dust is formed when it collides with the slope along the way. Under the action of wind, it drifts along the river valley, forming a large area of ​​dust pollution, which seriously affects the health of construction workers on the working surface and reduces the ambient air quality in the construction area. In addition, due to the narrow construction site of the excavated side...

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Problems solved by technology

[0003] At present, in the field of engineering construction, wet dust suppression methods such as pressurized water bags, pipeline sprinkling, and high-pressure spray are usually used. The project is affected by terrain, strong wind, dry heat and other factors, and the effect is limited. In addition, there is no good control method for the dust generated by the rolling of gravel on the high slope.

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