摘要
为分析定位块体在不同支护工况下的地震响应特征与动态稳定性响应,以大岗山水电站地下厂房为工程实例,采用块体理论和三维离散元软件(3DEC)建立了安装间某典型定位块体数值模型,并将围岩模拟开挖位移与实测变形监测数据进行对比,论证块体与结构面力学参数及相关模型建立的合理性。对比该定位块体在不同支护工况下的地震响应规律与动态稳定性,结果表明,应用离散单元方法分析块体地震响应与稳定性是可行的,锚杆支护对定位块体具有较好的抗震作用。
In this paper, we analyze the earthquake response characteristics and dynamic stability of positioning block under different support conditions by taking the underground plant of Dagangshan Hydropower Station as an example. In doing it so, a typical positioning block numerical model of erection bay based on the block theory and three-dimensional distinct element code （ 3DEC ） have been built. Additionally, we perform a comparison between simulative dig displacement of surrounding rock and real deformation monitoring data, then demonstrates the parameter of block and structural planes and the feasibility of building relative models. Overall, the comparisons of earthquake response characteristics and dynamic stability of positioning block under different support conditions show that it is feasible to analyze block earthquake and stability with discrete element method. Additionally, the bolting support presents a better anti-earthquake effect for positioning block.
出处
《水利水电科技进展》
CSCD
北大核心
2014年第4期20-23,28,共5页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金(51009130
51279202)
