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High-steep side slope and intensely weathered bed rock solid waste landfill site seepage prevention structure and treatment method thereof

A technology of high and steep slopes and treatment methods, which is applied in the directions of foundation structure engineering, excavation, sheet pile walls, etc., to achieve the effect of increasing storage capacity, increasing storage capacity, and good guiding effect

Active Publication Date: 2010-12-15
WUXI MUNICIPAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When spraying anchors is used as foundation pit support method, temporary dewatering measures such as well point dewatering and trench drainage are often taken. This method is also not suitable for the treatment of anti-seepage base layers in solid waste landfills

Method used

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  • High-steep side slope and intensely weathered bed rock solid waste landfill site seepage prevention structure and treatment method thereof
  • High-steep side slope and intensely weathered bed rock solid waste landfill site seepage prevention structure and treatment method thereof
  • High-steep side slope and intensely weathered bed rock solid waste landfill site seepage prevention structure and treatment method thereof

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Embodiment

[0025] Embodiment: Referring to the accompanying drawings, on the surface 2 of the original rock mass 6, vertical grooves of 300 × 300mm are opened at horizontal intervals of 10m, and steel cages are built in to guide and drain gabions 5, and the outer circumference is filled with gravel. The drainage gabion is connected to 8. Drainage gabion 5 is columnar, composed of gravel or pebble drainage stone core 5.1 with a particle size ranging from 50 to 200mm, outsourcing geotextile filter layer 5.2 and steel cage 5.3, the top of the gabion is sealed with clay 10, and the bottom drainage The gabion 8 is composed of a gabion layer and a DN200HDPE perforated drainage pipe 9 at the bottom, and is placed in the main blind ditch of 500×500mm groundwater collection. On the slope surface, the horizontal interval is 3m, the vertical interval is 3.5m, the holes are drilled according to the diameter of 50-100mm, and they are distributed in a plum blossom shape, and the anchor rod 1 is made b...

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Abstract

The invention relates to a high-steep side slope and intensely weathered bed rock solid waste landfill site seepage prevention structure and a treatment method thereof. The high-steep side slope and intensely weathered bed rock solid waste landfill site seepage prevention structure is characterized in that the back of a seepage prevention cloth surface layer is a reinforced steel bar net fine stone concrete leveling layer adhered by drill grouting concrete anchor rods, and the back of the leveling layer is a protection bottom layer formed by inlaying broken stones or pebbles into vertically arranged alternate drainage gabions along a sloping surface. Relative to the leveling by backfilling clay in the prior art, the invention has the advantages of short construction cycle, clay saving, project investment saving and big capacity of reservoir; relative to reinforcing the high-steep side slope by jetting concrete at present, the invention also has the advantages of simple construction, investment saving and good drainage effect, and good safety stability of an anchor bolt spray layer. The invention is economic and safe and meets the demands of a high-steep side slope and intensely weathered bed rock-paved HDPE (high-density polyethylene) geomembrane seepage prevention layer.

Description

technical field [0001] The invention relates to an anti-seepage structure and a treatment method for landfills of high and steep slopes and strongly weathered bedrock solid wastes (such as garbage and other solid wastes). Background technique [0002] Garbage and industrial solid waste, hazardous solid waste treatment, a common method is to use landfill. In order to save landfill land, landfill sites are usually located in valleys, abandoned quarries, sand pits and other lands with little value for use. One of the key core contents of landfill treatment is landfill anti-seepage treatment. The commonly used anti-seepage layer is mainly 1.5mm or 2.0mm thick HDPE geomembrane. The HDPE geomembrane has extremely strict requirements on the anti-seepage base layer under it, that is, there must be no edges and corners, sharp objects, etc., to prevent the anti-seepage layer of the HDPE geomembrane from being pierced after the landfill is under heavy pressure, resulting in leakage. ...

Claims

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Application Information

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IPC IPC(8): E02D17/20E02D5/74E02D31/00
Inventor 耿震刘刚邱云龙
Owner WUXI MUNICIPAL DESIGN INST
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