%0 Journal Article
%T “套接式H型”缓冲器在超大型竖井混凝土施工中的应用<br>Application of “sleeve-connected H-type” buffer in concrete transportation within oversize shafts
%A 刘协
%A 李国华
%A 王明
%A 马池帅&lt
%A br&gt
%A LIU Xie
%A LI Guohua
%A WANG Ming
%A MA Chishuai
%J 山东大学学报（工学版）
%D 2017
%R 10.6040/j.issn.1672-3961.0.2017.095
%X 摘要： 针对N-J水电工程调压竖井长溜管输送混凝土时骨料离析、下料速度快、混凝土和易性较差等输送技术难点,设计出一种“套接式H型”缓冲器,并对其结构设计及工作原理进行了详细研究。现场对比试验及应用表明:与原有的MY·BOX型缓冲器相比,新型缓冲器结构简单,制作成本低,且能有效控制高落差条件下的混凝土下落速度,解决混凝土拌和物离析及对管路磨损、击穿问题,保证了设备的使用寿命、施工安全及混凝土工程质量,可为类似竖井混凝土衬砌施工提供良好的借鉴。<br>Abstract: Regarding aggregate segregation, excessively fast slipping and poor concrete mix-ability during concrete long distance convey by articulated chute in surge shaft of N-J(NEELUM-JHELUM)hydroelectric project, one kind of “sleeve-connected H-type” buffer was designed and its structure design & operation principle were discussed. Comparative trial and application in site indicate that comparing with original MY·BOX buffer the new one has a simpler structure and cheaper cost, and it can effectively control the concretes dropping speed under high elevation difference and resolve the concrete segregation and damage as well as breaking through for chute, guaranteeing the service life of equipment, construction safety and quality of concrete works, which can also provide reference for similar surge shaft concrete lining project
%K 长溜管输送
%K 竖井
%K 混凝土衬砌
%K “套接式H型”缓冲器
%K &lt
%K br&gt
%K shaft
%K concrete lining
%K sleeve-connected H-type Buffer
%K long articulated chute transportation
%U http://gxbwk.njournal.sdu.edu.cn/CN/10.6040/j.issn.1672-3961.0.2017.095