Automatic drainage anchor rope system for slope protection and construction method thereof

Abstract

The invention discloses an automatic drainage anchor rope system for slope protection and a construction method thereof. The automatic drainage anchor rope system has anchor rope reinforcement and drilled hole drainage functions at the same time, the effect that one hole has multiple purposes is achieved, and the slope safety coefficient is greatly increased under the same construction cost. The automatic drainage anchor rope system comprises a drilled hole, a steel strand, an isolating pipe, a water-pervious pipe, a water swelling rubber water stopping ring, a drainage pipe, a protective pipe, cement mortar and an outer anchor head; underground water infiltrates into the gap between the water-pervious pipe and the isolating pipe through a drainage section, so that the water pressure in the gap is increased, when the water head of a water inlet of the drainage pipe is higher than the elevation of an opening of the drilled hole due to the fact that the water level of the underground water rises, the underground water in the gap naturally flows out from the drainage pipe, syphonage is naturally started, and the underground water in a slope is discharged. The drainage work process is conducted circularly along with falling of rain, the pump drainage effect of the drainage pipe changes periodically and circularly, long-time efficient real-time continuous drainage of the system is achieved, and the drainage governance problem of large-scale landslide is solved.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and in particular relates to a self-draining anchor cable system for slope protection and a construction method thereof. The invention is suitable for disposal of side slope disasters, especially suitable for protection of side slope engineering with abundant groundwater. Background technique [0002] Because the anchor cable system can reflect the characteristics of active support, it has been widely used. The anchor cable reinforcement technology has entered the active prevention and control in the design from the passive application of accident treatment, and has become a part of the slope engineering design content. There are many types of anchor cables used in slope reinforcement engineering, but the basic structure is similar, mainly including inner anchorage section, free tension section and outer anchorage section. During the construction of the anchor cable, the inner anchorage s...

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Problems solved by technology

During the construction of the anchor cable, the inner anchorage section and the free tension section will be grouted and sealed successively. Due to the pressure grouting, not only the anchorage system is formed, but also the grout penetrates into the rock-soil gap and strengthens the rock-soil mass, but at the same time Block the seepage channel of groundwater and reduce the permeability of rock and soil, which may lead to a substantial rise in the groundwater level of the slope and cause landslide disasters

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