Method for rapidly repairing and reinforcing high and steep landslide

Abstract

The invention discloses a method for rapidly repairing and reinforcing a high and steep landslide. The method comprises the following steps that firstly, a slope bottom landslide body is removed, thenpower frames are installed at the slope top and the slope bottom correspondingly, the two power frames are connected through a steel wire rope, and the steel wire rope is tensioned through a rotatingwheel and can be mutually interviewed; then grading excavation is conducted on a rush-repair slope, slope surface finishing is conducted, grading is conducted to form a surface layer, excavation andsupporting are conducted at the same time, the surface layer is composed of hanging net shotcrete, and a supporting system is composed of anchor pipes and anchor rods; grouting anchor pipes are installed at the bottoms of all levels of slope surfaces of supporting anchor pipes from the bottom of the slope to the top of the slope, fine aggregate concrete is poured into the anchor pipes, and then grouting anchoring is conducted on the anchor pipes and the anchor rods; a plurality of rows of anchor rods are arranged on the graded slope surface of a supporting anchor rod, are correspondingly fixedly connected with the anchor pipes of the graded slope surface and are fixedly connected with the anchor pipes of the previous excavated slope surface at intervals in a crossed manner; and finally, underground water and surface water are drained in the slope by adopting drain holes and slope toe drainage ditches. The method is high in supporting strength, short in construction period, small in masonry work amount and safe in construction, and the slope stability is rapidly enhanced.

Description

technical field [0001] The invention relates to the technical field of slope engineering reinforcement and stability of prestressed anchored structures, in particular to a method for quick repair and reinforcement of high and steep landslides. Background technique [0002] In large-scale engineering construction activities such as building deep foundation pits, road and railway subgrade slopes, and open-pit stopes, a large number of high and steep slopes have been formed. During the excavation process, stress release, sliding force increase, and strength Therefore, artificial activities have a serious impact on the stability of the slope. A large number of facts prove that the slope stability is also affected by other internal and external factors such as rainfall, adverse geological conditions, slope geometry and improper protection and reinforcement measures. Landslide hazards are everywhere. Once a landslide will cause a large number of property losses and casualties , a...

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Problems solved by technology

[0003] At present, the traditional slope repair and reinforcement methods mainly include gravity retaining walls, prestressed anchors, anti-slide piles, lattices and other measures. These reinforcement schemes can prevent the deformation of the sliding body and play an important role in enhancing the stability of the slope. significance, but the above method requires more sites, a large amount of masonry works, and a long construction period in the process of repairing high and steep slopes. Secondary disasters, resulting in deep damage and greater economic and property losses

Therefore, the rapid repair and reinforcement of high and steep slopes is a technical problem, and there is still a lack of simple and efficient reinforcement methods

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