• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Canada-U.S. Rock Mechanics Symposium >Disturbed Gravity Flow in Block Caving
【24h】

Disturbed Gravity Flow in Block Caving

机译：块塌陷中的扰动重力流动

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

摘要

In block caving, most existing knowledge of the mechanisms controlling gravity flow comes from idealized numerical and scaled physical modeling experiments on gravels and sands with narrow particle size and shape distributions. By contrast, actual block caves are known to have large discrete blocks, or interlocking groups of particles, which travel through the cave, resulting in hang-ups and other disturbances to the gravity flow stream or displacement field. Three fundamental types of disturbed flow are presented in this paper namely: static, kinematic and mixed mode flow. Static disturbance is the result of the formation of a stationary zone of particles, which blocks or disrupts the flow of smaller particles. Kinematic disturbance results from differential movements between the fine and large size fractions. Mixed mode disturbance is a combination of static and kinematic disturbance. The flow mechanisms for each disturbance mode are explored, and the implications to block caving considered.
机译：在块塌陷中，控制重力流动的机制的大多数现有知识来自砾石和具有窄粒径和形状分布的砾石上的理想数值和缩放的物理建模实验。与此相反，实际的块洞穴已知具有大离散的块，或颗粒的互锁基团，其行进通过洞穴，导致悬挂式视窗和其它干扰的重力流动流或位移场。本文提出了三种基本类型的干扰，即：静态，运动和混合模式流动。静态扰动是形成颗粒的固定区域的结果，其阻断或破坏较小颗粒的流动。运动扰动由细小尺寸和大尺寸分数之间的差分运动产生。混合模式干扰是静态和运动扰动的组合。考虑了每个干扰模式的流动机制，并且考虑了阻止崩落的影响。

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