Water（mud）inrush is one of the main geological disasters during the karst tunnel construction.The occurrence frequency and death toll caused by water（mud）inrush are both on the top levels in serious tunnel accidents at home and abroad.So in this thesis,the expansion mechanism of water inrush channel,minimum rock thickness between excavation opening and filling-type karst cave,and escape routes optimization after water inrush from the karst tunnel are systematically investigated by theoretical an... 

【文章來源】：山東大學(xué)山東省 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：287 頁

【學(xué)位級(jí)別】：博士

【文章目錄】：
Abstract
Chapter 1 Introduction
    1.1 Research background and significance
    1.2 Research objects
    1.3 Outline and innovative points
        1.3.1 Outline of the thesis
        1.3.2 Innovative points
    Reference
Chapter 2 Expansion Mechanism of Water Inrush Channel by Water Erosion and Seepage Force
    2.1 Introduction
    2.2 Mechanism of incipient particle motion
        2.2.1 Sliding instability of particles
        2.2.2 Rolling instability of particles
    2.3 Analysis of factors influencing the incipient flow velocity
        2.3.1 Influence of the particle radius
        2.3.2 Influence of the dip angle of inclined plane
        2.3.3 Influence of the hydraulic gradient and porosity
        2.3.4 Influence of the relative exposure degree
        2.3.5 Influence of the internal friction angle between particles
    2.4 Discussions
    2.5 Numerical implementation of incipent particle motion
        2.5.1 Numerical model
        2.5.2 Particle-fluid coupling analysis
        2.5.3 Simulated results and analysis
    2.6 Conclusions
    Reference
Chapter 3 Estimation of Minimum Rock Thickness between Excavation Opening and Filling-Type Karst Cave under Earthquake Action
    Notation
    3.1 Introduction
    3.2 Theoretical calculation model of the rock stratum resisting water inrush
        3.2.1 Water-filled karst caves around the tunnel
        3.2.2 Water-filled and water-mud-filled karst caves in front of the tunnel face
    3.3 Failure mechanism of the rock stratum resisting water inrush
        3.3.1 Water-filled karst cave locates at the top of the tunnel
        3.3.2 Water-filled karst cave locates at the bottom of the tunnel
        3.3.3 Water-filled karst cave locates at the lateral of the tunnel
        3.3.4 Water-filled karst cave locates in front of the tunnel face
        3.3.5 Water-mud-filled karst cave locates in front of the tunnel face
    3.4 Parametric analysis and discussion
        3.4.1 Influence of the karst water pressure
        3.4.2 Influence of the karst cave size
        3.4.3 Influence of the lateral pressure coefficient
        3.4.4 Influence of the tunnel depth
        3.4.5 Influence of the tunnel size
        3.4.6 Influence of the surrounding rock quality
        3.4.7 Influence of shear strength indexes of the filling material
        3.4.8 Discussion
    3.5 Case studies and engineering application
        3.5.1 General situation of engineering
        3.5.2 Case study 1
        3.5.3 Case study 2
        3.5.4 Case study 3
        3.5.5 Case study 4
    3.6 Conclusions
    Reference
Chapter 4 Water Flow Characteristics and Escape Routines Optimization after Water Inrush during Karst Tunnel Excavation
    4.1 Introduction
    4.2 Numerical simulation of gas-liquid two-phase flow after water inrush
        4.2.1 Engineering background
        4.2.2 Numerical model
        4.2.3 Simulated conditions
        4.2.4 Simulation methods
        4.2.5 Calculation mechanism
    4.3 Analysis of water flow characteristics after water inrush from the tunnel face
        4.3.1 Case study 1
        4.3.2 Case study 2
        4.3.3 Case study 3
    4.4 Escape routines optimized for water inrush from the tunnel floor
        4.4.1 Case study 4
        4.4.2 Case study 5
        4.4.3 Case study 6
        4.4.4 Case study 7
        4.4.5 Case study 8
    4.5 Results comparison and Discussion
        4.5.1 Different excavation situations--case study 1 and case study 2
        4.5.2 Different water inrush positions-- case study 2 and case study 3
    4.6 Conclusions
    Reference
Chapter 5 Solute Transport Characteristics and Groundwater Connection Structures of Karst Water Tracing
    5.1 Introduction
    5.2 Calculation models and simulation methods of solute transport
        5.2.1 Physical models
        5.2.2 Mathematical models
        5.2.3 Simulation methods
    5.3 Numerical simulation of solute transport
        5.3.1 Straight pipeline model
        5.3.2 Bend model
        5.3.3 Depression model
        5.3.4 Waterfall model
        5.3.5 Branch pipeline model
    5.4 Analysis for groundwater connection structures based on the tracer test
        5.4.1 General situation of the engineering
        5.4.2 Characteristics of karst groundwater systems
        5.4.3 Tracer test
        5.4.4 Analysis for groundwater connection structures
    5.5 Conclusions
    Reference
Chapter 6 Unascertained Measure Model of Water and Mud Inrush Risk Evaluation in Karst Tunnels and Its Engineering Application
    6.1 Introduction
    6.2 Unascertained measurement evaluation principle
        6.2.1 Unascertained measure analysis of single index
        6.2.2 Determination of the index weight
        6.2.3 Unascertained measure analysis of multiple indexes
        6.2.4 Credible degree recognition criteria
    6.3 Water and mud inrush risk evaluation index system in karst tunnels
        6.3.1 Selection of the water and mud inrush risk evaluation indexes
        6.3.2 Establishment of the water and mud inrush risk evaluation index system
    6.4 Engineering application
        6.4.1 General situation of the engineering
        6.4.2 Determination of the single index measure evaluation vector
        6.4.3 Construction of the single index measure evaluation matrix
        6.4.4 Construction of the multi-index comprehensive measure evaluation matrix
        6.4.5 Credible degree recognition
        6.4.6 Excavation verification
    6.5 Conclusions
    Reference
Chapter 7 Conclusions and Recommendations
    7.1 Conclusions
    7.2 Recommendations
Acknowledgements
Research Experience
Publications (The First/Second Author)
Patients (The First/Second Inventor)
Honors & Awards
學(xué)位論文評(píng)閱及答辯情況表


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