铜街子工程左岸碾压砼坝段施工期温控监测

TEMPERATURE-CONTROL MONITORING DURING CONSTRUCTION OF TONGJIEZI GRAVITY R. C. C. DAM SECTION

铜街子工程左岸挡水坝是国内首次用碾压砼筑坝技术施工的大型永久性水工建筑物,施工中采用薄层通仓浇筑法,取消了人工冷却措施.本文着重介绍第四坝段温控监测仪器布置和观测成果的初步分析,探讨了碾压砼施工中应注意的问题.

This paper introduces the construction of a dam structure, in which the r. c. c. construction method was used for the 1st time on the permanent massive concrete block section in our country. Some features of the instrumentation in one of the dam's sections is briefly described. The r. c. c block was concreted in 1 m lifts in long block monoliths during cool season without any artifical cooling procedure. After analysing and comparing the monitoring data, this paper points out some aspects which need to be noticed during the r. c. c. construction.