This paper describes 3 typical accidents of contrac-tors onsite construction operationin petrochemical plants,and points out the existing construction operationproblems in petrochemical plant area: the ability of contractors is not good,the owner lacks standardized management for the contractors,and management authority of the owner department in charge of construction operationis weakened.

列举了3起石化装置现场典型承包商施工作业事故,指出了石化装置区施工作业管理中存在的工程承包商作业素质薄弱,工程建设单位对施工管理缺少规范化和标准化措施,工程建设主管部门的管理权威弱化问题。

The constructiontechnologies of single bucket excavator using forth and backhoe digging constructionmethods are introduced.

针对单斗挖掘机在土石方施工中的特点,介绍了单斗挖掘机中正、反铲挖掘机的基本作业方法,施工作业方法,以及生产率提高的措施等,可供施工中参考。

The key points of the permanent way work in 1998 are to raise train speeds on the existing lines, strengthen the upgrading of the equipment of the tracks and bridges on the Beijing-Guangzhou line, speed up the constructionmechanization and quicken the pace of scientific enterprise management.

1998年工务工作仍以既有线提速为重点,强化改造京广线的线桥设备,加快施工作业机械化进程,加快企业管理科学化步伐。

The importance of operation sidemanagement is emphasized and discussed from site management, schedule control, safety management and other aspects.

介绍了建设工程施工作业面管理的重要性 ,从现场管理、进度管理、安全管理等方面进行了论述 ,指出搞好施工作业面管理 ,是整个施工项目管理的重要环

Building visual cognition model and installing traffic facility of each part can ensure safe and smooth traffic of construction operation area.

根据高速公路改扩建施工区的交通特性及驾驶人的反应特征,将施工作业区划分为7个分段,构建驾驶人视认模型,并对各个分段安全设施进行设置,可保障高速公路施工作业区的安全与通畅,这已被郑洛高速公路所证实。

Influence of Downhole Constructionon Environment and Its Treatment;

井下作业施工对环境的影响及治理