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Treatment method of sinkholes within the range of subgrade of karst landform roads

A treatment method and technology for sinkholes, applied in the directions of roads, roads, and filling, can solve the problems of subgrade soil soaking, subgrade softening, loss, etc., and achieve the effects of less site occupation, improved erosion resistance, and enhanced friction resistance.

Active Publication Date: 2020-09-15
HUALAN DESIGN GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to address the defects of the prior art, and provide a method for treating sinkholes within the range of road subgrades in karst landform areas, which can effectively solve the problems of subgrade soil soaking and erosion by groundwater, subgrade softening and loss, etc.

Method used

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  • Treatment method of sinkholes within the range of subgrade of karst landform roads
  • Treatment method of sinkholes within the range of subgrade of karst landform roads
  • Treatment method of sinkholes within the range of subgrade of karst landform roads

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Embodiment 1

[0042] The following steps can be used to complete the treatment of sinkholes within the subgrade range of karst landform roads:

[0043] (1) Pumping water and sewage, effectively reducing the water level of the sinkhole;

[0044] (2) Use an excavator to throw the flake 1 evenly along the sinkhole, and squeeze it into the mud with a bucket tamp. The particle size of the flake 1 is not less than 70cm.

[0045] (3) After the rubble 1 is thrown to the design elevation, pour C30 concrete 2 to completely cover the rubble 1, and vibrate for compaction.

[0046] (4) Re-pour C30 rubble concrete 3 to the design elevation of the cover plate bottom; the rubble content of C30 rubble concrete is 30%, and the rubble particle size is 60-80cm.

[0047] (5) After the C30 rubble concrete layer is consolidated, level the site, apply C30 reinforced concrete rib cover plate 5, and set a leveling layer 4 between the cover plate and the rubble concrete layer; the edge line of C30 reinforced concrete ...

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Abstract

The invention relates to a treatment method of a sinkhole in a karst landform road roadbed range. The treatment method of the sinkhole comprises the following steps: (1) pumping water and dischargingsewage to lower a water level in a sinkhole; (2) uniformly dispensing gravels along the sinkhole, tamping and squeezing the gravels into sludge; (3) after the gravels are dispensed to a designed standard height, pouring the concrete until the gravels are completely covered, and tamping and compacting; (4) pouring the gravel concrete to a cover plate bottom until reaching a designed standard height; (5) after the gravel concrete layer is solidified, flattening the field, constructing a reinforced concrete ribbed cover plate, and arranging a leveling layer between the cover plate and the gravelconcrete layer; (6) removing slope humus, wherein the slope on two sides is required to meet the design requirement; and (7) layering grinding, and refilling the roadbed to a designed standard height.By adopting the treatment method, the sinkhole in the roadbed range of the karst landform area can be effectively treated, and the problems of the underground water for the roadbed soil such as soaking, erosion, roadbed softening, loss and the like can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of road subgrade construction, in particular to a treatment method for sinkholes within the range of road subgrades in karst landform regions. Background technique [0002] In road construction, water has become one of the important factors affecting the stability of the subgrade, especially in karst landform areas, underground rivers often develop under sinkholes, and underground underground rivers are connected with groundwater and surface rivers. In rainy days or flood seasons, groundwater is easy to flow The water gushes out from the sink hole to soak the roadbed, erodes the roadbed soil, softens and loses the roadbed soil, causes the roadbed to collapse, and seriously affects the stability of the roadbed. Therefore, for different types of sinkholes, taking corresponding treatment measures to eliminate the impact of water on the subgrade is the key to ensuring the stability of the subgrade in karst landf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/04E02D17/18
CPCE01C3/04E02D17/18
Inventor 董厚伯巫裕润邓媚何启华罗降兰伟贵李行陈世京彭文立孔繁莉
Owner HUALAN DESIGN GRP CO LTD
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