Slope self-drainage anchor rod and construction method

Abstract

The invention relates to a slope self-drainage anchor rod and a construction method. The self-drainage anchor rod comprises a hollow anchor pipe, an anchorage device, a cushion plate and a siphon, wherein one end of the hollow anchor pipe is open, the other end of the hollow anchor pipe is closed, the hollow anchor pipe is wrapped in a filter screen, threads are arranged at the open end of the hollow anchor pipe, water-pervious holes are formed in the rear middle of the hollow anchor pipe, the rear segment of the hollow anchor pipe and a slurry outlet pipe are perpendicularly connected, the end of the slurry outlet pipe is sleeved with a sleeve valve and a geotextile bag, and on the two sides of the slurry outlet pipe, the geotextile bag is clamped and fixed to the hollow anchor pipe through hoops; the lower side of the hollow anchor pipe is obliquely placed in a slope, the relative height difference between the pipe opening of the hollow anchor pipe and the pipe bottom of the hollow anchor pipe is kept smaller than 7 m, pulp solidifies in the geotextile bag and is anchored in stable soil, and the front segment of the hollow anchor pipe is anchored to the cushion plate through the anchorage device; a water suction pipe of the siphon is inserted in the hollow anchor pipe and stretches to the bottom, the water suction pipe is connected with a drainage pipe and a balance water outlet device through connector bent pipes on the slope, and a water inlet of the water suction pipe is as high as a water outlet of the balance water outlet device. The slope self-drainage anchor rod is simple in structure, can achieve anchoring and draining at the same time and is good in drainage effect, easy and convenient to construct and low in manufacturing cost.

Description

technical field

[0001] The invention belongs to the technical field of rock and soil anchoring engineering, and in particular relates to a slope self-draining anchor rod and a construction method. Background technique

[0002] Slope is a natural or artificial slope, which is one of the most basic geological environments in human engineering activities and the most common engineering form of engineering construction. As one of the three major global geological disasters (earthquakes, floods, landslides and debris flows), slope instability and landslides seriously endanger national property and people's safety. Rainfall infiltration and rising groundwater level lead to low shear strength and increased sliding force of the slope, which is one of the main factors inducing landslides. Therefore, support and drainage are the main measures to prevent instability and landslides.

[0003] At present, the main methods for reinforcing the slope with support and drainage are: (1) T...

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