Prismoid pile and prismoid type pile forest dam

A technology of ridges and pile forests, applied in the field of debris flow prevention and barrier dams, can solve the problems that the shear resistance of the structure is not significantly improved, and it is not difficult to find the structural defects of traditional pile forest dams and large engineering waste, so as to avoid foundation failure, Structural safety protection, the effect of reducing the average flow velocity

Active Publication Date: 2019-01-01
四川省交通勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Through the analysis of the prevention and control mechanism, it is not difficult to find the structural defects of the traditional Zhuanglin dam. The single pile of the traditional Zhuanglin dam is prone to shear failure due to the huge impact load of the rocks. At the same time, its front is rectangular and will also withstand huge fluid Therefore, the single pile structure design needs to consider the strong strength and rigidity guarantee, the structure is bulky, the masonry workload is large, and there is more waste
The traditional grid pile forest dam partly makes up for this deficiency and improves the structural rigidity. However, due to the need for impact resistance, the structure still needs to be equipped with large masonry. However, due to the impact and fluid pressure on the front, the shear resistance of the structure is not enough. Has not been significantly improved, engineering waste is still large

Method used

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  • Prismoid pile and prismoid type pile forest dam
  • Prismoid pile and prismoid type pile forest dam
  • Prismoid pile and prismoid type pile forest dam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1-4 As shown, the present embodiment provides a kind of abutment pile, including abutment pile body 1 and the bottom foundation fixed on the bottom surface of the abutment pile, and the abutment pile body 1 is fixed on the bottom surface of a mud-rock flow river bed through the bottom foundation; the abutment pile body The upstream surface of 1 is two buffer surfaces formed after being bent toward the flow direction of the debris flow, and its bending line is a flow diversion buffer edge 123 inclined to the flow direction of the debris flow. The height of the prism pile body 1 is determined according to the height of the debris flow faucet.

[0039] Preferably, the abutment pile body 1 is a triangular truss structure, and the projection of the center of gravity of the upper bottom surface of the abutment pile body 1 on the lower bottom surface coincides with the center of gravity of the lower bottom surface. At this time, the stability of the abutment pi...

Embodiment 2

[0045] This embodiment is a further improvement made on the basis of Embodiment 1. The specific differences between this embodiment and Embodiment 1 are:

[0046] Preferably, the upper bottom surface of the abutment pile body 1 is an equilateral triangle, that is, the abutment pile body 1 is a regular triangular abutment, and at this time, the upper bottom surface of the abutment pile body 1 is an equilateral triangle, and the abutment pile body The upper base of 1 can also be an isosceles triangle, one waist of the isosceles triangle is a side of a buffer surface, and the other waist of the isosceles triangle is a side of another buffer surface.

Embodiment 3

[0048] This embodiment is a further improvement made on the basis of Embodiment 1 or Embodiment 2. The specific differences between this embodiment and Embodiment 1 or Embodiment 2 are:

[0049] A terraced pile forest dam includes at least one row of terraced pile groups, and each row of terraced pile groups includes a plurality of pyramid pile bodies 1 described above.

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Abstract

The invention belongs to the technical field of debris flow prevention dams and discloses a prismoid pile and a prismoid type pile forest dam. The prismoid pile comprises a prismoid pile body and a bottom foundation fixed on the bottom surface of the prismoid pile body. The prismoid pile body is fixed on the bottom surface of a debris flow riverbed through the bottom foundation. The water facing surface of the prismoid pile body is two buffer surfaces formed after bending in the flow direction of the debris flow, and the bending lines are distribution buffer edges obliquely arranged in the flow direction of the debris flow. The prismoid type pile forest dam comprises at least one row of prismoid pile groups, and each row of prismoid pile groups comprises a plurality of prismoid pile bodies. By the adoption of the prismoid pile and the prismoid type pile forest dam, the collision impact force, the risk of shearing, the effect of groove bottom erosion, destructiveness of debris flow to structures and possibility of foundation failure are correspondingly reduced.

Description

technical field [0001] The invention belongs to the technical field of retaining dams for prevention and control of mud-rock flow, and in particular relates to an edged pile and an edged pile forest dam. Background technique [0002] Since the 1950s, my country has started the prevention and control of debris flow, and has formed a comprehensive management system for debris flow basins based on "stabilization, blocking, and drainage". At present, gravity-type solid retaining dams are widely used in debris flow prevention and control projects in my country. In recent years, the use of permeable retaining dams in debris flow prevention and control projects has become increasingly widespread. Although debris flow retaining dams have been widely used in the prevention and control of debris flow in my country, my country has not yet formulated a national standard for the design of debris flow prevention and control projects, and only promulgated the industry standard for geology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/02E02D27/32E02D27/12
CPCE02B7/02E02D27/12E02D27/40
Inventor 陈紫云王希宝夏磊王延可
Owner 四川省交通勘察设计研究院有限公司
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