Economical debris flow blocking dam structure and construction method thereof
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United States of America Patent
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Jun 12, 2018
Issued Date -
Dec 28, 2017
app pub date -
Jun 17, 2017
filing date -
Jun 24, 2016
priority date (Note) -
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Abstract
The present invention relates to an economical debris flow blocking dam structure and a construction method thereof. The structure has an excavated foundation surface, and a dam body of the blocking dam is composed of a key wall arranged at a dam toe, dam body concrete wrapped on an outer surface of the whole blocking dam, concrete masonry block stones filled inside the blocking dam, and a plurality of drain holes formed in the dam body in a top and twin-side bottom shape; an open and centralized overflow weir is arranged on the top of the blocking dam; an overflow surface has a horizontal middle and extends to two sides along a longitudinal slope i of 10-20%; and the key wall is anchored on the foundation surface through joint bars stretching into bedrock, and an anti-scouring pit is formed close to a downstream side of the key wall.
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