摘要
小湾水电站地下厂房是目前世界上最大的地下厂房之一,采用了岩锚吊车梁结构形式,厂房开挖跨度和高度分别为28.30 m和79.88 m。由于岩锚梁通过两条宽度为0.5～8.5 m的陡倾断层,其施工期与运行期的稳定性成为关注的问题之一。在厂房洞室群的尾水闸门室中,选择具有相似工程地质条件的区域进行了现场模型试验研究,包括主要监测仪器的布置和加卸载过程设计,并对监测结果进行了分析。模型试验表明岩锚吊车梁承载能力满足设计要求,安全性有保障。
The anchored crane beam is used in the underground power house of Xiaowan Hydropower Station in which the generator room, one of the biggest rooms under construction, is 28.3 m in width and 79.88 m in height. Two faults with width ranging from 0.5 to 8.5 m and in high dip angle cross the generator room and the concrete crane beam. Therefore, the stability of the rock-bolted crane girder needs to be studied before the construction. This paper introduces the in situ model test that is carried out in the draft-tube gate room with the similar engineering geology condition. The setup of the monitoring instrument and the process of loading are included. The monitoring data are carefully analyzed; and the model test results demonstrate that the anchored crane beam can work at full capacity and its stability is guaranteed.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第6期1139-1144,共6页
Rock and Soil Mechanics
关键词
岩锚吊车梁
现场模型试验
地下厂房
anchored crane beam
in situ model test
underground power house
