Tunnel Executors
NATM's Recommendations and Guidelines

Author(s) Information

Khelalfa Houssam is a researcher in Civil, Ggotechnical & Coastal Engineering, at LGCE Laboratory University of Jijel in Algeria and School of Civil Engineering & Surveying of Portsmouth University in UK. He is the author of several science articles and books, he is a reviewer on international journals.


The purpose of this book is to present step-by-step requirements and methodology for the construction of high quality tunnels according to project specifications, codes and standards applicable by the NATM method. We present Guidelines and Recommendations for tunnel works. A pilot study has been presented; The geological conditions of the tunnel, seismicity, the kinematic analyzes of the portals, Failure Analysis, Collapse Analysis, Support Evaluation System, Drainage System, Tunnel Support Systems Review with Numerical Analysis Methods, Evaluation of Analysis Results, Analysis of Vehicles and Pedestrians Passages, Reinforcement details of the lining (Coating) and the concrete slab, Static calculation of the open trench structure and soil nail design calculations. Then we present with details how to make and apply the Realization, Monitoring and Surveillance of a Tunnel. Finally; we present with details how to make and apply a Quality Assurance Plan (QAP) and its detailed procedures necessary to reserve and meet the quality requirements for the good control and development of tunnel construction works.


Tunnels, NATM, Guidelines and Recommendations, Tunnel Study, Tunnel Construction, Tunnel Monitoring, Quality Assurance Plan (QAP), Study & Realization

Table of Contents

Title of the book
Chapter I: Generality
I. 1 Introduction
I. 2 Sequence for realization of a tunnel
I. 3 The different types of tunnels
I. 4 Tunnel calculation methods
I. 5 The different methods of tunnel construction
Chapter II: Guidelines and recommendations
II. 1 Organization and preparation of works
II. 2 Construction facilities
II. 3 Origin, procurement and storage of materials and supplies
II. 4 Quality assurance, establishment and monitoring of the Quality Assurance
Plan (QAP)
II. 5 Staking (picketing), implantation and construction tolerance
II. 6 Tunnel works
Chapter III: Study of an exemplary Tunnel
III. 1 Purpose and Method of Study
III. 2 Local geology of the study area
III. 3 Seismicity
III. 4 Studies carried out
III. 5 The geological conditions of the tunnel
III. 6 Kinematic Analyzes of North and South Portals
III. 7 Failure Analysis for Prism Type at North and South Portal
III. 8 Failure Analysis for the Planar Type at the North and South Portal
III. 9 Wholesale collapse analyzes
III. 10 Evaluation system support
III. 11 The drainage system
III. 12 Review of tunnel support systems with numerical analysis methods
III. 13 Analyzes performed with the Phase 2D program
III. Evaluation of the analysis results
III. 15 Analysis of Passages of Vehicles and Passage Pedestrians
III. 16 Reinforcement details of the interior coating and the concrete slab
III. 17 Static calculation of open trench structure
III. 18 Design calculations of soil nail
Chapter IV: Tunnel Realization and Monitoring
IV. 1 Coating classes
IV. 2 Drawings
IV. 3 Recommendations regarding tunnel portals
IV. 4 Tunnel excavation method
IV. 5 Auscultation & Monitoring
IV. 6 Monitoring deformation inside the tunnel (convergence)
Chapter V: Quality Assurance Plan (QAP)
V. 1 General Organization Note (GON) - Tunnel Process
V. 2 Clearing Works- Portal
V. 3 Excavation and Provisional Retaining
V. 4 Shotcrete
V. 5 Topographic Procedures for the Tunnel