A Study of the Coupled Hydraulic-Mechanical Behavior of Jointed Rock Masses

节理岩体水力耦合行为研究

• 批准号: 9215622
• 负责人: Edward Cording
• 金额: $ 17.74万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9215622&HistoricalAwards=false
• 关键词: Study; Coupled; Hydraulic; Mechanical; Behavior

The results obtained in this project will provide needed quantitative criteria for the rational design of pressure tunnels and shed light into the fundamental hydromechanic interactions occurring during hydrojacking of jointed rock masses. The results will also aid in estimation of magnitudes of inflow into underground openings from observed geologic data early in the project. The flow regime due to dewatering and recharge of the jointed rock mass will modeled to assess the effect of the hydromechanical properties of the joints and the attitude and spacing of the joints on the computed magnitudes of infiltration rates into the tunnel or rates of exfiltrations into the masses. The coupled hydromechanical rockliner interaction will be studied to assess the effect of topography, hydromechanical joint properties and level of reinforcement in the liner, on the head loss across the liner, magnitude of exfiltrations from the tunnel and initiation of hydrojacking in the mass.

本项目所取得的成果将提供所需的 压力隧洞合理设计的定量准则 并揭示了基本的流体力学相互作用 发生在节理岩体液压顶升过程中。 结果 也将有助于估计流入的数量， 从早期观测到的地质数据中， 项目 由于降水和补给的流动状态 将模拟节理岩体，以评估 接头的流体力学性能和姿态， 节理间距对计算出的渗透量的影响 进入隧道的速率或渗入群众的速率。 本文将研究岩石衬垫的耦合作用 评估地形、水力机械接头 内衬的性能和加固水平， 穿过衬管的损失，从隧道渗出的量 并开始整体液压提升。