Small watershed debris flow disaster prevention method and system

A technology for mudslides and small watersheds, which can be applied to land preparation methods, dikes, sea area engineering, etc., can solve problems such as steep topography, forest vegetation damage, landslides and collapse activities, and achieve sustainable and rapid growth, significant economic benefits, and a good economic environment Effect

Pending Publication Date: 2018-05-11
YUNNAN FORESTRY TECHNOLOGICAL COLLEGE
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Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the geological environment of the traditional small watershed river basin is fragile, and the topography is steep, which eventually leads to landslides and avalanches and intense soil erosion; at the same time, the forest vegetatio

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  • Small watershed debris flow disaster prevention method and system
  • Small watershed debris flow disaster prevention method and system
  • Small watershed debris flow disaster prevention method and system

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, the method for preventing and controlling debris flow disasters in small watersheds provided by the embodiments of the present invention includes the following steps:

[0037] S101: The retaining dam and Gufang dam project are arranged in the N1 debris flow ditch and the N2 debris flow ditch in the Awang Xiaohe debris flow formation area and the Huangjiawan debris flow;

[0038] S102: The diversion embankment project is laid on the riverbed of the Daba...

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Abstract

The invention belongs to the technical field of natural disaster prevention, and discloses a small watershed debris flow disaster prevention method and system. (1) Barrier dam and check dam projects are distributed in a Ngawang creek debris flow forming area and a N1 debris flow ditch and a N2 debris flow ditch of Huangjiawan debris flow; (2) a training wall project is distributed on a big white river bed to the east of a Ngawang town; (3) a drainage groove project is distributed in a Ngawang creek debris flow ditch accumulating area; (4) a scour preventing wall project is distributed in an intersection between a Ngawang creek debris flow ditch and a south side gully of the Shimen village committee; and (5) trees, shrubs and herbaceous plants, growing in the area, are planted in the Ngawang creek debris flow ditch forming area. Main power mechanical parameters of the debris flow are calculated, and the activity is estimated to provide the debris flow prevention project proposals; and prevention project schemes are recommended.

Description

technical field [0001] The invention belongs to the technical field of natural disaster prevention and control, and in particular relates to a method and system for preventing and controlling debris flow disasters in small watersheds. Background technique [0002] Considering that after the retaining dam is put into normal use, the main loads of the force combination mode under different storage capacities (empty storage, half storage capacity and full storage) are: debris flow fluid impact force, earth pressure generated by debris flow accumulation behind the dam, static water pressure, dam bottom uplift pressure and seismic force. The design and calculation working conditions are divided into the following categories: working condition I: dam body weight + earth pressure + hydrostatic pressure + uplift pressure (full storage capacity state); working condition II: dam body weight + earth pressure + debris flow fluid impact force + hydrostatic pressure + uplift pressure (ha...

Claims

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Application Information

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IPC IPC(8): E02B7/04A01B79/02E02B8/00E02B3/10
CPCA01B79/02E02B3/10E02B7/04E02B8/00Y02A10/11
Inventor 王海帆王军温钦舒郑云坤李向强胡世平
Owner YUNNAN FORESTRY TECHNOLOGICAL COLLEGE
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