CAJ | 학술논문

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(3 DEC )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。
위분석정위괴체재불동지호공황하적지진향응특정여동태은정성향응，이대강산수전참지하엄방위공정실례，채용괴체이론화삼유리산원연건(3 DEC )건립료안장간모전형정위괴체수치모형，병장위암모의개알위이여실측변형감측수거진행대비，론증괴체여결구면역학삼수급상관모형건립적합이성。대비해정위괴체재불동지호공황하적지진향응규률여동태은정성，결과표명，응용리산단원방법분석괴체지진향응여은정성시가행적，묘간지호대정위괴체구유교호적항진작용。
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.