Hydroelectric barrage building machine

Abstract

The invention relates to a hydroelectric barrage building machine. A method comprises the following steps of: building a cut-off dam in a concrete pouring way by mainly utilizing the characteristics of concrete materials so as to change a silty sand earth and stone material intercepting method used for thousands of years up to now; and carrying out cut-off dam building through one-stop operation including cleaning excavation, propelling and concrete pouring, water-intercepting barrage engineering, riverbed platform engineering, marginal slope protection engineering, and the like on a riverbed dam foundation by adopting a mechanized construction technology and integrating mechanical collecting saw slot excavation, hydraulic supporting wall protection, hydraulic propelling and hydraulic box type concrete pouring into a whole. The invention is mainly used for the engineering of building a riverbed water-intercepting barrage, a riverbed platform foundation and a river and lake marginal slope protection foundation under the conditions that a dam type power station needs to build the cut-off dam and a dam-free power station does not need to build a cofferdam.

Description

Technical field [0001] It belongs to the construction method of hydropower foundation construction and special machinery for weir and dam technical background [0002] In the construction of modern dam-type hydropower stations, most of the large and medium-sized hydropower stations are built. The first task of building a dam is to intercept the river before the dam location, build an earth-rock interception dam, and then build a second channel downstream of the dam location. The earth-rock dam forms a cofferdam to create a dry working environment for future dam construction. Human beings have mastered the use of water flow thousands of years ago to the large-scale construction of modern hydropower. This interception method is indeed a very ancient, practical and most economical method. Although people have developed the tools for transporting silt, soil and rock from the use of human shoulders to the modern use of large-scale transport and excavation machines, and the mater...

AI Technical Summary

Problems solved by technology

Therefore, when the river is closed, the downstream is often a yellow dragon that entrains a large amount of mud and sand, causing the downstream water quality to deteriorate; and after the river is closed, the downstream section will be silted up by sand and rocks for a considerable distance, and it must wait for the next time. Only another flood can clean up the river channel and slowly push the sand, soil and rocks downstream; if the sand, sand and rocks cause great obstruction to the downstream channel of the closure dam or become unnavigable, the channel must be manually cleared

After the downstream cofferdam is built for the dam foundation of the power station, the cleaning of the silt, soil and rock at the dam foundation section is a very difficult task. Basically, the manually poured silt, soil and rock are cleaned out together with the river water after forming mud. It is often not easy to find a place to dump these mud, sand, earth and rocks containing a large amount of water in the dam construction site. Some have to build a dam and build a mud reservoir for the cleaned mud, earth and rocks, so as not to prevent these muds and rocks from forming. The mud and sand flow everywhere, which is troublesome and time-consuming

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