A construction method of cemented dam based on the whole process quality control
A construction method and technology for cementing dams, which can be used in infrastructure engineering, filling, dams, etc., and can solve the problems of underutilization of large-sized aggregates, waste of resources, and aggregate separation, so as to reduce the separation phenomenon and improve the Utilization, mitigating the effect of separation
Active Publication Date: 2020-05-19
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology
[0006] Aiming at the above-mentioned problems in the prior art, the present invention provides a cemented dam construction method based on the whole process quality control, which solves the phenomenon of aggregate separation when the cemented dam in the prior art uses large-sized rockfill aggregates Seriously, large particle size aggregates are not fully utilized, resulting in waste of resources
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[0040] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0041] Provide a cemented dam construction method based on the whole process quality control, which includes:
[0042] Step 1, screening and dividing the aggregate, and dividing the aggregate into sand and gravel with a particle size less than or equal to 150 mm and rockfill with a particle size greater than 150 mm through a vibrating screen with a sieve aperture of 150 mm;
[0043] The rockfill and gravel were sampled sepa...
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The invention provides a cemented dam construction method based on whole-process quality control, which relates to the technical field of hydraulic structures of hydropower and water conservancy projects. The depth in the stone layer increases the bonding between layers. After each layer of stone is laid, the initial setting time is measured by the Vicat meter, and the paving of the upper layer is controlled before the initial setting of the lower layer. Combination, reduce the phenomenon of aggregate separation, enable aggregates larger than 150mm to be used in dam construction, broaden the spectrum of cemented dam building materials, and avoid the waste of large-sized aggregates. Various quality inspections are carried out at the same time to ensure the construction quality of each step, thereby ensuring the construction quality of the entire dam body, and enhancing the stability of the dam body.
Description
technical field [0001] The invention relates to the technical field of hydraulic structures of hydropower and water conservancy projects, in particular to a cemented dam construction method based on whole-process quality control. Background technique [0002] The aggregate particle size of existing cemented sand and gravel dams is generally less than 150 mm. During construction, large-grained aggregates larger than 150 mm are usually removed or oversized aggregates are crushed to ensure the aggregate particle size used. The reason why the particle size of the aggregate should be controlled is that with the increase of the particle size of the aggregate, the separation of the aggregate is more serious, and it is more difficult to ensure the strength of the dam body. However, the problem of siltation in reservoirs in my country is serious, which affects the shape of river water flow, and these silts have a wide range of gradation, usually including a large proportion of rocks....
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IPC IPC(8): E02B7/06E02B1/00
CPCE02B7/06E02B1/00E02D17/18E02B3/10E02D19/02E02D19/04Y02A10/11Y02A20/00E02B3/16
Inventor 汪洋贾金生郑璀莹李曙光史婉丽刘中伟雷添杰丁廉营吴洋锋
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES