Slope micropile reinforced drainage system after sliding of fill slope and construction method thereof

Abstract

The invention relates to a slope micropile reinforced drainage system after sliding of a fill slope. The slope micropile reinforced drainage system comprises the fill slope and a drainage ditch, wherein the drainage ditch is located in the side of the slope toe of the fill slope, a plurality of micropile groups are longitudinally arranged in the fill slope at intervals from the slope toe to the slope top, a plurality of slope toe soft permeable pipes which extend into the drainage ditch from the interior of a slope body are arranged in the slope toe position of the fill slope, a plurality of slope surface soft permeable pipes which extend out of the slope surface from the interior of the slope body are arranged in the slope body of the fill slope, and a pile top crown beam is further arranged on the tops of the micropile groups which are located in the slope toe position. The slope micropile reinforced drainage system has the advantages of reasonable design, the simple structure, convenience in construction, safety and reliability, and an overall stable slope body is formed, so that the sliding side slope is reinforced; and additionally, the slope body and a slope toe drainage system are easy to repair and reform, and comprehensive advantages are obvious.

Description

Technical field[0001]The invention relates to a slope body micro-pile reinforcement drainage system after a fill side slope slides and a construction method thereof.Background technique[0002]The existing slope landslide reinforcement treatment mostly uses anti-slide piles, prestressed anchor cables, gravity retaining walls, etc. to reinforce the slope body or the slope toe. When the anti-slide piles are used, the spacing of the micro-piles is Mostly the pile diameter is 3~4 times. The reinforcement is mainly based on the stability of the slope, without deformation control. When there are more important structures on the fill slope, the structure of the anti-slide pile may continue the slope A certain displacement occurred, which led to a second accident; because it is difficult to find anchored bedrock in the layered soil-filled slope, it is difficult to find anchored base rock for reinforcement; and the use of retaining walls for rigid reinforcement is not feasible. The toe of the ...

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Problems solved by technology

[0002] The existing slope landslide reinforcement treatment mostly adopts anti-slide piles, prestressed anchor cables, gravity retaining walls, etc. to reinforce the slope body or foot of the slope. Most of them are 3~4 times the pile diameter, and the reinforcement is mainly based on the stability of the slope, without deformation control. When there are relatively important structures on the fill slope, the structural scheme of using anti-slide piles may cause the slope to continue. A certain displacement occurs, which will lead to secondary accidents; because it is difficult to find the anchored bedrock for reinforcement with prestressed anchor cables in the slope of layered fill, the feasibility is not strong; while rigid reinforcement with retaining walls is It is necessary to excavate the slope toe, and there is a great construction risk for the slope reinforcement that has already deformed

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