Study Of Reinforcement And Treatment Measures For Huai River Embankment Crossed By West To East Gas Pipeline Project

Open caisson is a construction technique which excavates soil in the prefabricated reinforced concrete well bore, and sinks into the ground by the deadweight of the well bore or exogenic so as to realize the aim of the project. It has been applied for foundation and becomes a widely-used foundation treatment method. As construction or a part of it directly used in project, group of open caissons is less-used at home. So it's very significant meaning and practical value to select designment and construction as task to make research on.The emphases of this paper is to deal with the downriver exit slope of the culvert of the Lukouzi electric power irrigation and drainage station, and it is discussed with the method of adopting six section continuous open caisson as the out aqueduct. From the design aspect, this paper detailedly narrates background of the engineering, the designing thinking, the confirm of every part's dimension, the connecting between the open caissons and the computing of the intension of the chiefly components. From the construction aspect, the difficulties of this engineering consists highness of the water table, the inequality of distributing of the stratum, and how to ensure that the six sections open caisson go down successfully and the appearance looks beautiful under the situation of intermixing powder gushing stake, filling clay and so on. Then this paper narrates the selecting of construction scheme, the groundsill dispose and execution technics of the open caisson, the arrangement of construction order during the going down course, the taphole method and the setting and effect of the block sinking board. During the actualizing process, the open caissons dimension, the axes displacement, the sedimentation and the sinking speed are observed and noted. By this a great deal data is gained which is gathered and analyzed. Adopting corresponding reliable treatment to rectify a deviation supplys reliable reference for the quality of the whole construction of the group of open caisson in the course of construction.Through actual measurement of the group of open caisson after the final settlement,the result indicates that the most displacement declination is 20mm,the largest declination is 15mm,and the largest height declination is 30mm,the construction effect of the whole group of open caisson is fairly great.As a part of the construction, the group of open caisson is in a crisscross fashion and beautiful,after donkey's years,it runs normally and provides the utility of the group of open caisson as construction with use for reference and value.