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Construction method for treating widened and heightened engineering joint surfaces of dikes on soft clay foundation

A technology of weak soil foundation and construction method, which is applied in dikes, sea area engineering, earthwork drilling and mining, etc., can solve the problems of cross-sectional differential settlement of new and old dike joints, seepage prevention, etc., to improve the effect of lateral reinforcement and reduce the amount of engineering , The effect of saving construction costs

Active Publication Date: 2013-03-13
HOHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies and defects, solve the cross-sectional differential settlement of dike widening and heightening projects on weak soil foundations and the anti-seepage problems of the joint surface of new and old dikes, and propose a new treatment method using composite geotextile combined grouting method. The construction method of the joint surface of the old embankment is to use special construction machinery to tunnel longitudinally along the embankment in the old embankment and lay the composite geotextile, so that the composite geotextile and the old embankment can be effectively occluded. The grouting pipe inside the cloth grouts the joint surface of the old and new embankments to achieve the double effect of compacting the joint surface of the new and old embankments and preventing seepage

Method used

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  • Construction method for treating widened and heightened engineering joint surfaces of dikes on soft clay foundation
  • Construction method for treating widened and heightened engineering joint surfaces of dikes on soft clay foundation
  • Construction method for treating widened and heightened engineering joint surfaces of dikes on soft clay foundation

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The protection scope of the present invention is not limited only to the description of this embodiment.

[0035] First, level the site, measure and set out the line, and determine the position of embedding the composite geotextile 9 and the depth inside the old embankment 1; excavate the construction work well 11 inside the old embankment 1, and excavate the first step on the slope 4 of the old embankment The working face 8; the drilling rig 12 is arranged on the step working face 8, and in the construction work well 11, the geared drill pipe 13, the excavation groove 14 and the composite geotextile 9 with the grouting pipe are arranged in sequence, and the grouting pipe The composite geotextile 9 is connected with the geared drill pipe 13 through the connecting ring 15, and the excavation groove 14 is arranged on the partially expanded composi...

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Abstract

The invention relates to a construction method for treating widened and heightened engineering joint surfaces of dikes on a soft clay foundation. A waterproof laminated film with a grouting pipe is embedded when a horizontal drill stem is utilized to drill a horizontal hair crack along the direction of an old dike, and the joint surfaces of new and old dikes are grouted by the grouting pipe embedded in the waterproof laminated film, so that longitudinal cracks of the dikes, which are caused by differential settlement of the joint surfaces of the new and old dikes, are effectively controlled and the problem of seepage prevention of the joint surface of the new and old dikes is solved. The technical method disclosed by the invention solves the technical difficult problem of laying transverse reinforced materials in the old dike; and the grouting is carried out by the waterproof laminated film with the grouting pipe, so that the joint surfaces of the new and old dikes are compacted and the seepage of water on the joint surfaces of the new and old dikes is effectively prevented. Therefore, the problems of the longitudinal cracks of the dikes and seepage, which are caused by improper treatment on the widened and heightened engineering joint surfaces of the dikes on the soft clay foundation, are effectively controlled. The method has the advantages of simple construction process and strong operability, is convenient for quality control and has obvious economic benefits and obvious treatment effects.

Description

technical field [0001] The invention relates to the technical field of embankment reinforcement engineering, in particular to a construction method for treating joint surfaces of embankment widening and heightening engineering on weak soil foundations. It is mainly applicable to technical fields such as differential settlement control of embankment widening and heightening projects in weak soil foundations and anti-seepage of joint surfaces of old and new embankments. Background technique [0002] With global warming, the global ecology is deteriorating, and severe weather such as torrential rains and typhoons has increased sharply, posing severe challenges to the safety of embankments and other projects. In 1998, the torrential rain and flood in the Yangtze River Basin caused the embankment of Jiujiang City to burst. In 2005, the typhoon in New Orleans, USA caused embankment damage, which caused serious consequences such as massive casualties and direct economic losses. my...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/10E02B3/16E21B17/22
CPCY02A10/11
Inventor 孔纲强庄妍徐惠民张子龙陈佳
Owner HOHAI UNIV
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