大岗山水电站坝区辉绿岩脉压缩蠕变试验研究

压缩蠕变试验是了解坝区软弱岩体蠕变变形特性的重要手段,是建立岩体压缩蠕变本构模型的基础。详细介绍大岗山水电站坝区辉绿岩脉大型刚性承压板压缩蠕变试验过程、方法和试验成果,深入分析压缩蠕变变形随时间的变化规律;利用蠕变试验数据回归拟合得到坝区辉绿岩脉的压缩蠕变经验方程,为深入认识和了解大岗山水电站坝区辉绿岩脉的流变力学特性提供重要的试验和理论依据。

STUDY ON COMPRESSIVE CREEP TEST ON DIABASIC DIKE AT DAM SITE OF DAGANGSHAN HYDROPOWER STATION

Compressive creep test is an important means of understanding creep deformation properties of soft rock and is also an important basis of establishing compressive creep constitutive model of soft rock.The process,method and achievements of compressive creep test for large-scale rigid bearing plate of diabasic dike at Dagangshan Hydropower Station are introduced in detail.The changing laws of compressive creep deformation with time under different pressures are analyzed.Compressive creep empirical equations for diabasic dike at dam site have been established by regression fitting method,which provides important experimental and theoretical references to understand the creep characteristics of diabasic dike at dam site of Dagangshan Hydropower Station.