Rock-fill concrete (RFC) and cemented sand and gravel (CSG) composite material dam as well as design and construction method thereof

A technology of rockfill concrete and cemented sand and gravel, which is applied in the field of gravity dam, can solve the problems of poor impermeability, large contact surface between the dam body and bedrock, and increased engineering quantity, so as to reduce the engineering cost, shorten the construction period, The effect of simplifying construction

Active Publication Date: 2011-01-05
TSINGHUA UNIV
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Problems solved by technology

However, due to the poor anti-seepage performance of CSG materials, additional anti-seepage treatment measure

Method used

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  • Rock-fill concrete (RFC) and cemented sand and gravel (CSG) composite material dam as well as design and construction method thereof
  • Rock-fill concrete (RFC) and cemented sand and gravel (CSG) composite material dam as well as design and construction method thereof

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing:

[0021] exist figure 1 Among them, the composite material dam body is composed of a rockfill concrete part 1 and a cemented sand and gravel part 2, the upstream side of the composite material dam is the rockfill concrete part 1, and the downstream side is the cemented sand and gravel Part 2. The upstream side of the dam body is poured with rock-fill concrete material, which can be constructed according to the construction method of rock-fill concrete dam; while the downstream side is poured with cemented sand and gravel material, which can be constructed according to the construction method of cemented sand-gravel dam.

[0022] According to the relevant requirements of the design specification for concrete gravity dams, the rigid body limit equilibrium method and the material mechanics method are used to calculate the anti-sliding stability and stress level of the dam body ...

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Abstract

The invention belongs to a rock-fill concrete (RFC) and cemented sand and gravel (CSG) composite material dam in the technical field of gravity dams as well as a design and construction method thereof. A dam body of the composite material dam comprises an RFC part and a CSG part; and the dam body at the upstream side of the composite material dam is the RFC part, and the dam body at the downstream side is the CSG part. The RFC part is poured by adopting an RFC material. The CSG part is poured by adopting a CSG material. The advantages of the two materials of the RFC and the CSG can be simultaneously exerted; because the upstream side of the dam body is poured by adopting the RFC, the procedure of distributing seepage preventing planes on the upstream surface can be omitted, thereby simplifying construction, shortening the construction period, and reducing the engineering amount of the dam body; and the sand and gravel of a riverbed and excavating waste slag can be used for preparing the materials of the RFC and the CSG, therefore, the invention can more fully utilizes excavating materials, reduce the construction cost and greatly reduce negative impact on environment and has favorable social, economic and environmental ecological benefits.

Description

technical field [0001] The invention belongs to the technical field of gravity dams, in particular to a new type of gravity dam, in particular to a rockfill concrete and cemented sand and gravel composite material dam and its design and construction method. Background technique [0002] In order to simplify the construction process and reduce the project cost, on the basis of ordinary concrete gravity dams, new material gravity dams such as roller compacted concrete dams, rock-fill concrete dams, and cemented sand and gravel dams have been gradually developed. [0003] Rock-fill concrete dam means that the dam construction material is rock-fill concrete, that is, the rock-fill material that has not been screened or preliminarily screened is directly put into the warehouse, and then special self-compacting concrete is poured to fill the voids of the rock-fill material to form a rock-fill concrete dam body. This type of dam uses rockfill as aggregate, which reduces the amount ...

Claims

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Application Information

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IPC IPC(8): E02B7/10
Inventor 王进廷金峰余文杰安雪晖周虎
Owner TSINGHUA UNIV
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