...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Indian Geotechnical Journal >Characterization, Modelling and Engineering of Rocks and Rockmasses
【24h】

Characterization, Modelling and Engineering of Rocks and Rockmasses

机译：岩石和岩石岩体的特征，建模与工程

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Rocks are heterogeneous materials usually associated with geological discontinuities making them weak for sustaining the loads due to civil and mining engineering structures. Characterization details of different isotropic, anisotropic and weathered rocks are presented along with the newly formulated classification system for weathered rockmass. Physical modelling of jointed rockmass under uniaxial, biaxial and polyaxial stress state through newly designed polyaxial system yielded significant results. Critical role of intermediate principal stress on strength and deformation for jointed rockmass is highlighted. New polyaxial failure criteria are proposed and compared. New observations on brittle fracture propagation and interlocking phenomena in crystalline rocks are modelled under polyaxial stress state. Extensive large-scale test results on rock joints under constant normal load and constant normal stiffness in static and cyclic modes were presented along with new predictive models. A new closed-form analytical solution is provided for circular openings in isotropic, homogeneous and elastoplastic rockmass for assessing the wellbore stability and openings. Results of physical modelling tests conducted on shallow tunnels subjected to impact loads and new predictive models developed for squeezing behaviour are also included in this paper. Understanding gained from the extensive characterization and physical modelling of materials in appropriate stress regime used effectively to solve real-time cases. The case studies included are: stability analysis of jointed rock slopes of Chenab bridge abutments, Subansiri power house slope stability, Tindharia landslide in Darjeeling, evaluation of bored tunnelling practices in rocks for Delhi metro and coupled hydromechanical modelling for the slopes in Beas catchment.
机译：岩石是通常与地质不连续相关的异质材料，使其薄弱以维持由于民用和采矿工程结构而维持负荷。呈现不同各向同性，各向异性和风化岩石的特征细节以及用于风化岩石的新配制分类系统。通过新设计的多轴系统在单轴，双轴和多轴应力状态下的关节岩体物理建模产生了显着的结果。突出了中间主应力对连接岩石渣的力量和变形的关键作用。提出并进行了新的多轴故障标准。关于晶体岩石脆性断裂繁殖和互锁现象的新观察在多轴应力状态下进行建模。随着新的预测模型，提出了恒定正常负荷下岩圈和静态和循环模式的恒定正常刚度的大规模测试结果。为各向同性，均匀和弹塑性岩体中的圆形开口提供了一种新的闭合形式分析解决方案，用于评估井眼稳定性和开口。在本文中还包括对受冲击载荷的浅隧道上进行的物理建模试验结果，并在本文中包含用于挤压行为的新预测模型。从有效地用于解决实时案例的适当压力制度的广泛表征和物理建模中获得的理解。案例研究包括：Chenab Bridge基台的关节岩石斜坡稳定性分析，小哈里亚山坡稳定性，Darjeeling中的Tindharia Landlide，德里地铁岩石岩石岩石隧道实践评价，并为BEAS集水区斜坡耦合流体力学建模。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号