A kind of construction method of rapid trough on high and steep slope

Abstract

The invention belongs to the technical field of water conservancy and hydropower construction engineering, and relates to a construction method for excavating rapid flow troughs on high and steep slopes. The trough and the slag chute are excavated in reverse from bottom to top, and the cross-section is an inverted trapezoid; before excavation of the slag chute, the main air supply pipeline is arranged from bottom to top along the downstream direction of the rapid flow chute, and reserved every 8-10m One branch pipe interface, the main air pipe pipe adopts φ108mm steel pipe; (2) Excavate the protective layer from the top to the bottom; (3) The slag body slides to the bottom of the trough along the slag chute, forming a slag accumulation platform at the bottom of the trough. The slag accumulation platform is used to clean the slag body; this construction method can avoid the excavation slag body from collapsing completely during the excavation of the rapid flow trough, which can reduce the construction environmental protection risk, reduce the construction safety risk, relieve the pressure of the construction period, and ensure the smooth flow. Reduce temporary road traffic safety risks.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower construction engineering, and relates to a construction method for a rapid flow trough on a high and steep slope. Background technique [0002] At this stage, the development of the hydropower market is gradually shifting to remote areas, and construction in mountainous areas is often limited by terrain conditions, which brings greater difficulty to the overall construction layout. However, for large-scale hydropower stations, there is a large amount of construction waste, so the choice of waste land not only affects the construction layout, but also affects the water and soil conservation work in the construction area. Therefore, in the general layout of the construction, most of the spoil yards are arranged in the ravines in the construction area. In order to achieve the goal of water and soil conservation, it is necessary to guide the ditch water to the original river c...

AI Technical Summary

Problems solved by technology

[0002] At this stage, the development of the hydropower market is gradually shifting to remote areas, and construction in mountainous areas is often limited by terrain conditions, which brings greater difficulty to the overall construction layout

However, for large-scale hydropower stations, there is a large amount of construction waste, so the choice of waste land not only affects the construction layout, but also affects the water and soil conservation work in the construction area