research

Test and Research on the Rheological Damage Properties of Sandstone under Dynamic stress field-Seepage field coupling

Abstract

机械振动、交通荷载、地震等产生的动应力场与降雨等因素所产生的渗流场耦合,会加快软岩的流变损伤,导致滑坡、崩塌、泥石流等严重的地质灾害。因此,加强对动应力场-渗流场耦合作用下软弱岩体的动态流变损伤特性的研究具有重要的理论和实际意义。论文以软弱砂岩为研究对象,利用重庆大学煤炭灾害与控制国家重点实验室的RLW-2000M煤岩三轴流变试验机研究了砂岩在动应力场-渗流场耦合作用下的动态流变损伤特性。具体的研究内容如下: (1)通过采集-钻芯-切割-打磨-浸泡等过程制备饱和的砂岩试样,根据砂岩试样的全应力-应变曲线及试验设备的实际情况合理的确定试验方案。 (2)制备4组饱和的砂岩试样,试验过程中的围压...If the dynamic stress field, which is caused by machine vibrating, vehicle loading, earthquake, and so on, is coupled with seepage field, the rheological damage of soft rock will be accelerated. As a result, serious geological disasters, such as landslide, collapse and debris flow, will be happened. So, it has important theoretical and practical significance for us to strengthen the research of dy...学位:工学硕士院系专业:建筑与土木工程学院_岩土工程学号:2532013115179

    Similar works