Structure and method for processing black cotton soil embankment with impervious geotextiles

A technology of anti-seepage geotextiles and black cotton soil, which is applied in roads, roads, buildings, etc., can solve the problems of black cotton soil spoils, increase project cost, and adverse effects on the surrounding environment, so as to reduce spoils and save project costs , Conducive to the effect of water and soil conservation
CN104594150AActive Publication Date: 2015-05-06SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2015-05-06

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Abstract

The invention provides a structure and a method for processing a black cotton soil embankment with impervious geotextiles. The embankment structure comprises a geogrid gravelly soil base course, impervious geotextile edging and interlayer seepage-proofing layers, a black cotton soil fill stratum and a non-expansive clay top seal layer. The method comprises the following steps: (1) clearing a foundation; (2) setting out; (3) paving three layers of geogrid gravelly soil with the total thickness being 50cm; (4) spreading the impervious geotextiles on two sides of the road foundation, lapping the impervious geotextiles with filled soil by 250cm, turning up the impervious geotextiles on the slope of the road foundation, lapping the impervious geotextiles on the two sides in the middle of an embankment by 100cm after turning up, and bonding by using emulsified asphalt, wherein the lapping width of the adjacent impervious geotextiles is100cm and the impervious geotextiles are bonded by virtue of the emulsified asphalt; (5) spreading the soil and carrying out rolling construction; and (6) filling and rolling the top seal layer. The structure and the method disclosed by the invention are conducive to the stabilization of the embankment and are capable of preventing the embankment from deformation.
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Description

technical field

[0001] The invention relates to a reinforcement technology for treating black cotton soil embankment by using geocell gravel soil embankment bottom layer and anti-seepage geotextile. Background technique

[0002] Black cotton soil is a kind of special cohesive soil. It is a geological body with many cracks and significant expansion and contraction formed in the natural geological process. The clay composition is mainly composed of strongly hydrophilic minerals montmorillonite and illite. Black cotton soil has super-consolidation, fissures, water swelling, dehydration shrinkage and cracking, and repeated denaturation is equal to the engineering properties of normal consolidated clay. Cracks are randomly distributed in the soil, which can cause deformation and damage to buildings. Often have long-term potential danger. The use of black cotton soil has always been a problem in road construction with black cotton soil. If black cotton soil is not used for embank...

Claims

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