Management-and-protection-free integrated check dam and construction method thereof

A check dam and integrated technology, which is applied in the field of a check dam without management and protection and its construction, can solve the problems of low flood control standards for check dams, the threat of downstream check dams, and the collapse of check dams. The effect of strong anti-scour ability of dam slope, low dam construction cost and saving project investment

Pending Publication Date: 2020-08-14
张金良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of check dams and scattered distribution, the management and protection tasks are huge, and the flood control standards o

Method used

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  • Management-and-protection-free integrated check dam and construction method thereof
  • Management-and-protection-free integrated check dam and construction method thereof
  • Management-and-protection-free integrated check dam and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: as figure 1 The shown one-piece check dam without management and protection includes a homogeneous earth dam body 1, and a protective layer arranged on the homogeneous earth dam body 1; The upstream slope protection layer 2 on the surface of the dam slope, the downstream slope protection layer 3 on the slope surface downstream of the homogeneous earth dam body 1, and the mixture layer 4 arranged on the crest of the homogeneous earth dam body 1, and the mixture Layer 4 is connected with upstream slope protection layer 2 and downstream slope protection layer 3 as a whole;

[0027] The homogeneous earth dam dam body 1 is buried with multiple layers of blind drainage pipes 5 at intervals, and the mouth of the blind drainage pipes 5 runs through and extends out of the downstream slope protection layer 3;

[0028] The thickness of the protective layer of the upstream dam slope is 1.0m, and the thickness of the protective layer of the downstream dam slope is 2.0...

Embodiment 2

[0036] Embodiment 2: Different from Embodiment 1: the thickness of the protective layer of the upstream dam slope is 1.3m, and the thickness of the protective layer of the downstream dam slope is 2.5m; The distance between two adjacent blind drainage pipes 5 is 4m;

[0037]The upstream slope protection layer 2, the downstream slope protection layer 3, and the mixture layer 4 adopt the same mixture; the mixture is prepared by uniformly mixing the dam building soil material and the muddy silt fine sand consolidation agent according to the weight ratio of 80:20. into; argillaceous silt fine sand consolidation agent is prepared by calcined argillaceous silt fine sand fine powder and slag powder, cement by weight percentage of 75%:8%:17%.

[0038] The construction method of the above-mentioned pipe-free and protective one-piece check dam comprises the following steps:

[0039] Step 1: Rolling and filling the homogeneous earth dam body 1 according to the design section and construc...

Embodiment 3

[0046] Embodiment 3: Different from Embodiment 1: the thickness of the protective layer of the upstream dam slope is 1.5m, and the thickness of the protective layer of the downstream dam slope is 3.0m; The distance between two adjacent blind drainage pipes 5 is 5m;

[0047] The upstream slope protection layer 2, the downstream slope protection layer 3, and the mixture layer 4 adopt the same mixture; the mixture is prepared by uniformly mixing the dam building soil material and the muddy silt fine sand consolidation agent according to the weight ratio of 90:30. become;

[0048] The argillaceous silty sand consolidation agent is prepared by calcined argillaceous silt fine sand fine powder, mineral powder, and cement at a weight percentage of 80%:10%:10%. The specific steps are: preheat the argillaceous silt fine sand After drying, put it into the calciner, calcined at 1050°C for two hours, then cool it rapidly, and grind it to 200 mesh fine powder for later use; then mix the ca...

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Abstract

The invention provides a management-and-protection-free integrated check dam and a construction method thereof. The check dam comprises a homogeneous earth dam body and a protection layer arranged onthe homogeneous earth dam body. The protection layer comprises an upstream slope protection layer, a downstream slope protection layer and a mixed material layer, and the mixed material layer is integrally connected with the upstream slope protection layer and the downstream slope protection layer. The construction method includes the steps that grinding and filling of the homogeneous earth dam body are conducted; mixed materials are prepared, the mixed materials are transported to the positions of the upstream slope protection layer and the downstream slope protection layer to be spread and subjected to grinding construction synchronous with the homogeneous earth dam body, and meanwhile lifting is conducted; various layers of draining blind pipes are buried; and filling of the mixed material layer is conducted. By means of the management-and-protection-free integrated check dam and the construction method thereof, the dam slope scouring preventing capability of the prepared management-and-protection-free integrated check dam is high, the problem that the check damp is likely to be collapsed when being subjected to floods exceeding the standard can be effectively solved, and in addition, the engineering management and protection task can be simplified.

Description

technical field [0001] The invention belongs to the technical field of check dam construction, and in particular relates to a check dam with integrated protection without management and a construction method thereof. Background technique [0002] In the Loess Plateau area of ​​Northwest my country, there are ravines and ravines, and soil erosion is serious. In order to intercept the silt formed by water and soil erosion, a large number of check dams have been built in the ditches. The layout of check dams is generally to build a series of cascade dams in the main channel, the branch channel and the main channel according to the size of the drainage area of ​​the channel. Flood detention, mud retention, silting, and reducing sediment entering the river are of great significance, and are an important measure for comprehensive management of small watersheds. [0003] The check dams currently built are composed of dams and drainage structures. The dams are generally made of loc...

Claims

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Application Information

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IPC IPC(8): E02B3/10E02B3/12E02D17/18B28C5/08
CPCB28C5/006B28C5/08B28C5/0806B28C5/0831E02B3/10E02B3/128E02D17/18
Inventor 张金良苏茂林
Owner 张金良
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