Asphalt core wall base and construction method thereof
A construction method and foundation technology, applied in water conservancy projects, marine engineering, coastline protection, etc., can solve the problem that earth-rock dams cannot be used for overflow, and achieve the effects of optimizing the layout of the hub, saving the construction period, and reducing the number of
Active Publication Date: 2016-01-13
POWERCHINA CHENGDU ENG
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Problems solved by technology
[0003] The invention provides an asphalt core wall base, which solves the problem that the previous earth-rock dams cannot be used for flow in the filling process
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[0022] The present invention will be further described below in conjunction with accompanying drawing.
[0023] Such as figure 1 As shown, the base of the asphalt core wall includes a base building surface 11 and a base body 12; the base building surface 11 is set on the bedrock 2, and the base body 12 is set on the base building surface 11, and the level of the top of the base body 12 is higher than the level of the foundation surface 21 of the dam; the level described herein refers to the height relative to the horizontal plane, for example, the level of the top of the base body 12 means The height of the top of the base body 12 relative to the horizontal plane. Wherein, there are multiple implementations of the foundation building surface 11 on the bedrock 2, for example: the foundation building surface 11 is arranged on the surface of the weakly weathered bedrock layer 22 in the bedrock 2, or it is arranged on On the surface of the bedrock 2 after the consolidation grout...
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The invention discloses an asphalt core wall base and a construction method thereof. By adopting the asphalt core wall base and the construction method thereof, the problem that an original earth-rock dam cannot be used for overflowing in the filling process is solved. The asphalt core wall base comprises a base foundation surface and a base body. The base foundation surface is arranged on a base rock. The base body is arranged on the base foundation surface. The horizontal height of the top of the base body is larger than that of a dam body foundation surface. The method is applied to construction of the asphalt core wall base. The horizontal height of the top of the base body in the base is larger than that of the dam body foundation surface, so the portion, higher than the dam body foundation surface, of the base can protect safety of a fracture surface on the lower portion of a dam body, and the earth-rock dam can conduct overflowing in the filling process; moreover, the height of a cofferdam arranged on the upper stream is reduced, the number of diversion tunnels is reduced, investment is saved, the construction period is shortened, and the layout of a hydro-project is optimized.
Description
technical field [0001] The invention belongs to the field of water conservancy and hydropower engineering, and in particular relates to an asphalt core wall base and a construction method thereof. Background technique [0002] In an earth-rock dam with an asphalt concrete core wall, the asphalt concrete core wall and the foundation surface of the dam body are connected through a concrete foundation. The existing asphalt core wall base is generally a concrete base whose top is flush with the base of the dam body by digging grooves on the bedrock. Since the dam body filling material of an earth-rockfill dam with an asphalt core wall is mainly granular materials, and the top of the existing asphalt core wall base is flush with the dam foundation surface, it cannot protect the lower part of the dam body. When the middle dam surface flows, the dam body filling material will be washed away by the water flow, and the asphalt core wall will also be washed away, so the earth-rock da...
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Inventor 王晓东王党在赵永刚冯军胡小红汤雪峰柏仲生梁娟
Owner POWERCHINA CHENGDU ENG