Study of the Relationship between Longitudinal Deformation Curve and Field Measurement Data in Tunnel Excavation

• Main Authors: Yin-Chien Huang, 黃胤傑
• Other Authors: Yu-Lin Lee
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/04798346423552721100

碩士 === 中華大學 === 土木與工程資訊學系碩士班 === 95 === In this study includes the application of the longitudinal deformation curve analysis of the Convergence-Confinement Method base on the measurement data of gravel and metamorphic rock tunnel excavation. To analyze the parameters of the longitudinal deformation curve and the confinement loss of unsupport distance.Then, to estimate the confinement loss of initial. To provide for feedback and the timing of support. This study utilizes the longitudinal deformation curve formula of Panet (1995), Chikato (1979), Lee (1994) and Hoek (1999), cooperate with the measurement datas, regression with SPSS software and Back Calculation analysis in this study to get the parameters of the longitudinal deformation curve and the confinement loss of unsupport distance. And then, to estimate the confinement loss of initial. According to the results in this study:(1) Panet (1995), Lee (1994) and Hoek (1999) can be tried to get the confinement loss of initial and then to estimate the pre-displacement.The formula of Chikato (1979) can only estimate the rock convergence ratio of support system,(2) the measurement data from support, it can be used Back Calculation analysis to estimate the rock confinement ratio from the face of excavation,(3) the confinement loss of un-support distance(λd) is an important data for Back Calculation data,(4) Panet (1995) and Chikato (1979) should be analyzed by the initial measurement data, Lee (1994) and Hoek (1999) should be analyzed by the back calculation measurement data,(5) from the results, it can be show the influence factors of confinement loss is the height of cover soil and unsupport distance.