试题与答案

给排水管网维护与修复技术之案例分析 1.背景 某公司承担了排水管道维护及其管道修复工

题型:问答题 案例分析题

题目:

给排水管网维护与修复技术之案例分析

1.背景

某公司承担了排水管道维护及其管道修复工程。在维护巡视中发现新建北路下的某段管道是盲端,经公司研究决定于2010年7月15日准备将新建北路的排水管道与已建成的管道井堵口打开连通。公司派新进场的几名临时工人进行该项目作业。第1名作业人员打开第一个井立即下井作业,由于管道内涌出大量硫化氢气体,致使该作业人员当场晕倒,地面的5名作业人员见状后先后下井救人,也相继晕倒,待消防队员赶来时,已造成3人死亡,3人重伤。

调查中发现:已建成管道为钢筋混凝土管,直径1500mm,由于年久疏于维护管理,已存在多处局部损坏,其中三个井段由于地面超载等原因造成管道裂缝,经鉴定结构尚可满足承载要求,拟采用全断面修复法实施修复。

2.问题

(1)第1名作业人员的作业程序和随后施救人员的做法是否正确?

(2)造成本次事故的原因有哪些?

(3)三个井段可以采用哪些修复方法?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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