Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Tunnel and Underground Space
Journal Basic Information
Journal DOI :
Korean Society for Rock Mechanics
Editor in Chief :
Volume & Issues
Volume 10, Issue 4 - Dec 2000
Volume 10, Issue 3 - Sep 2000
Volume 10, Issue 2 - Jun 2000
Volume 10, Issue 1 - Mar 2000
Selecting the target year
세계 주요국의 고준위폐기물 처분개념과 현황
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 1~16
리용과 튜린을 연결하는 알프스관통 고속철도 터널건설사업
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 17~24
Modeling the Effect of Excavation Sequence and Reinforcement on the Response of Tunnels with Discontinuous Deformation Analysis Method
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 25~32
This paper presents two new extensions to the DDA method. The extensions consist of sequential loading or unloading and rock reinforcement by rockbolts, shotcrete or concrete lining. Examples of application of the DDA method with the new extensions are presented. Simulations of the underground excavation of the Unju Tunnel of Kyungbu High Speed Railway Project in Korea were carried out to evaluate the influence of excavation sequence and reinforcement on the tunnel stability. The results of the present study indicate that improper selection of excavation sequence could have a destabilizing effect on the tunnel stability. On the other hand, reinforcement by rockbolts and shotcrete can stabilize the tunnel. It is found that, in general, the DDA program with the three new extensions can now be used as d practical tool in the design of underground structures. In particular, phases of construction (excavation, reinforcement) can now be simulated more realistically.
Surface Subsidence according to Progressive Collapse of Circular opening
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 33~44
In order to investigate the effect of progressive collapse of underground circular opening on surface subsidence, laboratory model tests were performed. The modelling materials were sand which has been used as KS standard. Six test models which had respectively different depths of openings were produced. Surface subsidence and horizontal displacements were measured according to progressive collapse of underground opening. Some subsidence prediction method such as NCB method, profile function method and influence function method were considered to predict the subsidence of sand models. The profile function method approximated by Gaussian error function was finally suggested as the most appropriate to sand models.
An Experimental Study for the Hydraulic Behavior of Artificial Rock Joint under Compression and Shear Loading
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 45~58
Cyclic shear test system, which is capable of measuring flow rate inside rock joint, was established to investigate the hydraulic behavior of rough rock joints under various loading conditions. Laboratory hydraulic tests during compression and shear were conducted for artificial rough rock joints. Prior to tests, aperture characteristics of specimens were examined by measuring surface topography. Permeability changes under compression were well approximated with several hydraulic model. Hydraulic behavior conformed to dilation characteristics in the first stage, and permeability increased with increase of dilation. As the shear displacement progressed, flow rate became somewhat constant due to gouge production and offset of apertures. Hydraulic behavior under cyclic shear loading was also influenced by the degradation of asperities and gouge production. In addition. the relation between hydraulic aperture and mechanical aperture under compression and shear loading was investigated and compared.
A Study on the Measurement of Acoustic Emission and Deformation Behaviors of Rock and Concrete under Compression
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 59~69
Acoustic emission is n burst of microseismic waves generated by microscopic failure due to deformation in materials. The study on the detection of initiation and propagation of microcracks from acoustic emission measurement is very important for the evaluation of the stability of underground rock structures by the nondestructive letting method. In this study, acoustic emission was measured under uniaxial stiffness loading test used to obtain the complete stress-strain curves of marble and concrete used as reinforced materials of rock structures. The analysis of acoustic emission parameters and source location were performed to discuss the characteristics of the deformation and failure behavior of rock and concrete. And acoustic emission was measured under cyclic loading test to verify the Kaiser effect associated with the damage of materials, in situ stress of rock, and stress history of concrete structure.
A study on anisotropic characteristics of axial strengths in
-quartz by using molecular dynamics simulation and uniaxial compression test
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 70~79
We carried out NPT-ensemble (constant-number of particles, pressure, and temperature) Molecular Dynamics (MD) simulations for measuring strength anisotropy under uniaxial compressive stress rotated to the crystallographic axes in
-quartz. Uniaxial compressive strengths of a single quartz crystal were measured in directions of the a- and c-axis. Measured uniaxial strength of a single quartz crystal was higher in the direction parallel to the c-axis than that measured in the direction normal to the c-axis. However the reverse was found in calculated uniaxial strengths by MD simulation. The contradictive result of strengths was observed in both cases but was found to be different in origin. Strength anisotropy of defectless
-quartz crystal in MD simulation is basically caused by structural difference of quartz. By contrast, anisotropy of measured strength in the uniaxial compression test is related to oriented micro-defects developed during crystal growth.
A Study on the Mining Method for Limestone Mines with Less Environmental Hazards
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 80~91
Open cut mining of limestone is generally considered to be more advantageous than underground mining in recovery, grade control, economics, and safety, but it causes substantial environmental pollutants such as ground vibration, noise, dust. It also changes ground surface and may destroy vegetation. The Halla limestone mine which lies adjacent to Baikdu mountains range is selected for a model study. To reduce environmental hazards, and to conserve original surface and woods, both open cut and underground mining methods must be adopted. In case of sub-level sloping. a unit block of 87m high, 70m wide, and 100∼l20m long is suggested with an estimated overall recovery of 42%. Some suggestions to reduce the environmental hazards are also included. The followings must be considered in determining the degree of fragmentation; the discontinuity conditions in the rock mass and the charge concentration both at the bottom and column of the hole. In addition to adopting a barrier wall for reducing environmental hazards, the probable production from underground mining is also discussed.
지반조사 및 시험결과 촬용과 문제점
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 92~110
대단면 장대 산악터널에서의 NATM기계화 시공
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 111~120
암반공학적 고찰에 의한 추곡-웅진간 도로터널 설계 사례의 분석
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 121~142
곤지암 지하저장 운영 사례
Tunnel and Underground Space, volume 10, issue 1, 2000, Pages 143~151