CN-116856337-B - Pretreatment method for ecological control and collaborative emergency of slope convex slope integrated and landslide damming body

CN116856337BCN 116856337 BCN116856337 BCN 116856337BCN-116856337-B

Abstract

The invention discloses a pretreatment method for ecological control and collaborative emergency of a slope protruding slope integrated body and a landslide weir plug body, which utilizes an adult forest planted vertically by a slope foot to cross with an adult forest planted horizontally by the slope outside the slope to form a fresh forest frame, and simultaneously utilizes a waterproof soil bag formed by filling stacked rock-soil particles on site to form a soil column or a soil wall to support the horizontally adult forest, wherein the fresh forest frame and the soil column or the soil wall jointly form a supporting structure of a forest frame shed tunnel for preventing potential landslide body collision, and a drainage channel of the landslide weir plug body is formed between the soil column or the soil wall to jointly carry out ecological control and collaborative emergency pretreatment on the protruding slope integrated body and the landslide weir plug body on a river side slope. The invention can replace the post-treatment technology of emergency excavation of the flood discharge groove after the blocking of the landslide, and builds the hidden discharge channel in advance by pretreatment before the blocking of the landslide, thereby realizing ecological protection of the side slope of the river channel, reducing the risk of blocking of the landslide and facilitating construction.

Inventors

ZHOU CHENG
WANG CHEN
CHEN XIAOHONG
ZHONG QIMING
HE NING
LIU ENLONG
CHEN QUN
ZHANG GUIRONG
FU TAO
Hei Mingchang
WAN LI

Assignees

水利部交通运输部国家能源局南京水利科学研究院
四川大学
成都米尚坊科技有限公司

Dates

Publication Date: 20260505
Application Date: 20230717

Claims (5)

1. The pretreatment method for ecological prevention and control and collaborative emergency of landslide and damming body is characterized by comprising the following steps: (1) On the premise of not obstructing river flood discharge, a plurality of forests growing straight are planted in a longitudinal row along the side slope at the toe of the easily-sliding section of the river side slope to form a protective forest, wherein the forests are selected from adult metasequoia or adult eucalyptus; (2) Corresponding to the forest trees in each row, excavating transverse planting pits on the slope body from the toe to the upper side at equal intervals along the slope direction, wherein the excavated planting pits are in the same row as the forest trees in each row; (3) Transplanting fresh and alive mature woods planted in advance into each transverse planting pit to enable the mature woods to horizontally extend out of the slope; (4) Digging pit slots corresponding to each row of vertical trees point by point upwards from the toe of a slope to be leveled as a base, stacking soil bags filled with rock and soil crushed aggregates of a stacking body on site, and transversely forming a plurality of soil columns or whole rows of soil walls on the slope; The soil column is formed by stacking a plurality of layers of soil bags, two soil bags of each layer are arranged side by side, and the directions of the two soil bags of the upper layer are vertical to the directions of the two soil bags of the lower layer, namely, every two adjacent layers are stacked in a longitudinal and transverse staggered manner, so that gaps between the two soil bags of the two adjacent layers are vertical; the soil columns or the soil walls are stacked against the sloping upper sides of each row of vertical woods, and each row of vertical woods serves as a wall pile of the soil columns or the soil walls, so that the soil columns or the soil walls play a supporting role; The soil bags in the step (4) are obtained by filling rock-soil aggregate crushed aggregates in a waterproof bag on site; (5) Binding and connecting the junction of each row of horizontal wood and the vertical wood by using a binding belt, so that the vertical wood and the horizontal grown wood are crossed to form a fresh wood frame structure, and then a supporting and retaining structure of a wood frame shed tunnel for preventing the potential landslide body of the river slope from collision is formed together with each row of soil columns or soil walls, and a drainage dark channel of a landslide weir plug body is formed between the soil columns or the soil walls; When the protruding slope integrated exists on the river slope, the transverse planting pit is excavated on the lower side surface of the slope integrated, and the purpose of stabilizing each slope stacked body which is likely to be subjected to sliding damage is achieved through a supporting structure formed by the fresh forest frame structure and the transverse soil columns or the soil walls.
2. The method of claim 1, wherein in the step (1), the pitch of the forest tree and the pitch of the forest tree are 2-3 m.
3. The method of claim 1, wherein in the step (2), the vertical position height difference of two adjacent transverse planting pits is 2-3 m, so that the distance between the two transverse planting pits in the downhill direction is determined.
4. The pretreatment method for ecological control and collaborative emergency of the slope bulge integrated is characterized in that according to the method of claim 1, only the position of the transverse planting pit is changed to be excavated on the lower side surface of the bulge integrated when the transverse planting pit is excavated, and the adult forest is horizontally planted on the bulge integrated and is in cross connection with the adult forest vertically planted on the slope surface on the lower side of the bulge integrated.
5. The method of claim 4, wherein one or more mature trees lying on the ground are planted according to the size of the slope assembly with the slope protruding, and one or more mature trees standing upright.

Description

Pretreatment method for ecological control and collaborative emergency of slope convex slope integrated and landslide damming body Technical Field The invention belongs to the field of ecological protection and disaster prevention and reduction engineering of river side slope engineering, and particularly relates to a method for ecological control of slope integration of a river side slope and cooperative emergency pretreatment of a landslide and a damming body. Background The loss and the slippage damage of the side slope of the river channel are serious ecological environment problems which afflict national development and improvement of the economic life of people, particularly the side slope of the canyon river channel, has burst and rapidness when high-order landslide occurs, and even has no response. The landslide body impacts the protruding slope body of slope in the slip process, increases capacity rapidly because of wrapping up in and holding the effect of the spatula to obtain very high kinetic energy with the help of topography condition, can produce huge landslide earthwork volume in a short time, produce the damming body and even damming the dam and jam the river course. In the engineering of the river side slope at the far side, only when the problems of landslide accumulation and blocking are generated and emergency disposal is needed, people can spend huge resources to treat the problems of protection of the river side slope and landslide blocking. Therefore, how to effectively carry out ecological control on the protruding slope integration of the river slope and the landslide and damming body is always a great technical and economic problem to be solved in the river slope engineering. Although the ecological protection can be realized by the technology of constructing the protective forest at the toe of the highway side slope, in the field of highway traffic, the forest is generally planted only at the toe, but in river engineering, the forest is generally planted at the bottom of a river bed or even a river bank because the smoothness of the river is ensured. Some ecological river management demonstration projects such as stone throwing and foot protection combined grass planting and shore protection, wood pile combined vegetation composite shore protection and the like are developed in the country at present, but the concept of landscape water conservancy is emphasized generally, and the problems cannot be solved. In terms of the ecological protection of the side slope of the river channel and the disposal technology of the landslide and the blocking body of the landslide, the technology of post-treatment which should be acute is also emphasized too, for example, the side slope of the river channel is reinforced after the landslide, the emergency flood discharge groove (post-treatment technology) is excavated in emergency Zhu Geliang after the blocking body is piled up on the landslide, the research and the development and the application of the comprehensive ecological control technology of the protruding slope integration and the landslide and the blocking body on the side slope of the river channel are lacked, and the deep effective ecological protection technology means and the effective pre-treatment technology (the hidden discharge channel of the bottom of the blocking dam is pre-built by pre-treatment before the blocking dam is formed) are lacked. Therefore, a pretreatment method for ecologically preventing and controlling and cooperatively emergent slope integration and landslide damming body protruding on the river side slope is needed to be invented. Disclosure of Invention Aiming at the defects of the prior conventional technology, the invention provides a pretreatment method for ecological control and collaborative emergency of a slope convex slope integrated body and a landslide weir stopper body, so as to realize ecological protection of a river slope, and ecological control and collaborative emergency pretreatment of the landslide weir stopper body, and reduce the risks of loss of stability of the river slope and landslide weir stopper. The invention is based on the fund of national natural science foundation joint fund project. The invention provides a pretreatment method for ecological prevention and control and collaborative emergency of landslide and damming bodies, which comprises the following steps: (1) On the premise of not obstructing river flood discharge, a plurality of forests (trees) growing straight are planted in a row along the lateral direction of the side slope at the toe of the easily-sliding section of the river side slope and in a longitudinal direction (along the slope direction) to form a protective forest; (2) Corresponding to the forest trees in each row, excavating transverse planting pits on the slope body from the toe to the upper side at equal intervals along the slope direction, wherein the excavated planting pits are in the same row as the fo