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High concrete slab rock-fill dam dam-filling space-time pre-settlement control method

A face rockfill dam and rockfill body technology, which is applied in the direction of dams, barrages, barrages, etc., can solve the impact of unsafe operation of the rockfill dam body, cracks in the concrete face, and uneven settlement deformation of the rockfill body of the dam body To avoid cracks in concrete panels, ensure safe and stable operation, and reduce uneven deformation

Active Publication Date: 2009-11-18
中国葛洲坝集团第三工程有限公司 +1
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Problems solved by technology

[0002] The construction technology of general rockfill dams is more concerned with the construction progress, mainly in the front area with complex construction procedures. The body dry density gradually increases from the upstream area of ​​the dam body to the downstream area of ​​the dam body, and the porosity presents a trend of gradually decreasing from the upstream area of ​​the dam body to the downstream area of ​​the dam body. In this way, the overall settlement laws of the upstream and downstream rockfill bodies of the dam body are inconsistent, resulting in unbalanced settlement deformation of the rockfill body of the dam body, which has an adverse effect on the operation of the concrete slab of the dam body, and even causes cracks in the concrete slab. The safe operation of the rockfill dam has unsafe effects

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  • High concrete slab rock-fill dam dam-filling space-time pre-settlement control method
  • High concrete slab rock-fill dam dam-filling space-time pre-settlement control method

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Embodiment example

[0015] Table 1 Filling stages and intervals of high rockfill dam body with time-space pre-settlement control method

[0016]

[0017] The main construction steps of the space-time pre-settlement control method for the filling of high face rockfill dams are as follows: figure 1 and as shown in Table 1:

[0018] exist figure 1 In , marker 2 is upstream and marker 10 is downstream. In general, the filling of the dam body is divided into six phases, namely Phase I construction area 9, 8. 7. Phase IV construction area 6, The fifth-phase construction area 5 and the sixth-phase construction area 11; the concrete panel construction is divided into three phases, that is, the first-phase panel 1, the second-phase panel 3 and the third-phase panel 4.

[0019] The interval between the first and second phases of the rockfill dam is nearly 5 months, the continuous high-intensity construction is adopted between the third and fifth phases of rockfill dam filling, and the inte...

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Abstract

The invention discloses a high concrete slab rock-fill dam dam-filling space-time pre-settlement control method, an interval between a first stage of filling and a second stage of filling on the rock-fill dam is nearly five months, a certain subsidence stage is for a first stage rock-fill dam; after the dam-filling of a second stage rock-fill dam, a concrete first stage deck is constructed, meanwhile a third stage inverted mesa filling is constructed in the space control manner of a post area above a proparea; the filling of rockfill is constructed to the height of a wave wall in the manner of continuous high strength filling from the third stage to the fifth stage; the interval between a fifth stage rock-fill dam and a sixth stage rock-fill dam is nearly twenty month, the rock-fill dam is constructed to a designed height of crest to complete the construction of an ultrahigh rock-fill dam, a second stage of pouring concrete slab is constructed in the interval, and after the rock-fill dam is constructed to the designed height of crest, a third stage of concrete slab and wave wall are constructed.

Description

technical field [0001] The invention relates to the construction field of dam body filling, in particular to a time-space pre-settling control method for dam body filling of a high face rockfill dam. Background technique [0002] The construction technology of general rockfill dams is more concerned with the construction progress, mainly in the front area with complex construction procedures. The body dry density gradually increases from the upstream area of ​​the dam body to the downstream area of ​​the dam body, and the porosity presents a trend of gradually decreasing from the upstream area of ​​the dam body to the downstream area of ​​the dam body. In this way, the overall settlement laws of the upstream and downstream rockfill bodies of the dam body are inconsistent, resulting in unbalanced settlement deformation of the rockfill body of the dam body, which has an adverse effect on the operation of the concrete slab of the dam body, and even causes cracks in the concrete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/06
Inventor 周厚贵邓银启王章忠王亚文曹生荣
Owner 中国葛洲坝集团第三工程有限公司
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