Efficient suction and drainage pipes for the interior of rock and soil

Abstract

The invention discloses a high-efficiency suction and drainage pipe used in the interior of rock and soil bodies, which sequentially includes a protective layer, a water absorption layer and a drainage layer from the outside to the inside; the drainage layer includes a cylindrical base body, and one end of the base body extends outward to form a horn-shaped The evaporation end surface, the base body, and the evaporation end surface are uniformly provided with a plurality of axial capillary channels along the circumferential direction, and each capillary channel communicates with the outside through a radially arranged capillary groove; External; the water-absorbing layer includes a hygroscopic-hygroscopic fiber layer, and the hygroscopic-hygroscopic fiber layer is wrapped on the outer wall of the substrate, close to the capillary groove, and the hygroscopic-hygroscopic fiber layer does not wrap the evaporating end surface; the protective layer includes a water-permeable geotechnical filter cloth, The permeable geotechnical filter cloth is wrapped on the outside of the moisture absorption-release fiber layer, and a plurality of fixing rings are arranged on the outside of the permeable geotechnical filter cloth. The invention can actively absorb the water in the surrounding large-scale soil and discharge it quickly, has strong water absorption and drainage capacity, high efficiency and wide water absorption range.

Description

technical field [0001] The invention belongs to the technical field of drainage engineering and relates to a high-efficiency suction and drainage pipe used inside rock and soil bodies. Background technique [0002] At present, slope deformation caused by rainfall infiltration has become a problem that cannot be ignored in the field of highway engineering. Rainfall infiltration leads to swelling and softening of rock and soil mass, which reduces its strength and seriously weakens slope stability. Therefore, it is of great significance to discharge the rainwater inside the slope in time to improve the stability of the slope. [0003] Most of the existing slope drainage pipe structures adopt a drainage structure in which permeable geotechnical filter cloth is wrapped outside the perforated PVC drainage pipe. Water seeps through gravity and drains water by self-flow and self-overflow. The drainage efficiency is low and only a small area of ​​soil above the drainage pipe can be ...

AI Technical Summary

Problems solved by technology

The water-absorbent resin is in the form of powder, which needs to be evenly dispersed on the substrate to make a product during application, but the powder is not fixed and easy to move, resulting in uneven spreading and affecting the strength and integrity after water absorption

Water-absorbent fiber is a functional fiber developed on the basis of water-absorbent resin, which overcomes the shortcomings of water-absorbent resin; super absorbent fiber (SAF) has strong water absorption and can absorb 30-50 times its own weight of normal saline or more than 150 times Ion-free water, but it also has excellent water retention properties, making it difficult to separate out the absorbed water

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