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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Journal of Engineering Geology
Journal Basic Information
Journal DOI :
The Korea Society of Engineering Gelolgy
Editor in Chief :
Volume & Issues
Volume 10, Issue 3 - Dec 2000
Volume 10, Issue 2 - Dec 2000
Volume 10, Issue 1 - Apr 2000
Selecting the target year
Analysis of Deformation and Stability of Slope at the Wiri Region of Local Road 999 Nearby Andong, Gyeongsangbukdo in Korea.
The Journal of Engineering Geology, volume 10, issue 1, 2000, Pages 1~12
Heaving of road and subsidence of slope took place at the Wiri region of the local highway 999 in Gyeongsangbukdo, Korea after heavy rain in the next year of construction. Although the state government had performed remedial treatments by reducing the angle and the height of the slope, deformation had never stopped. Therefore, we have preformed the analysis of deformation and stabilityof the slope. Study area consists of the Cretaceous shale, siltstone and sandstone and two faults are found. The major deformation occurred by sliding of rock mass along faults after heavy rain because not only thepore pressure at the fault plane and the unit weight of sliding mass increased, but did the shearstrength of saturated fault clay become very low. The decrease in shear strength of saturated fault clayis the major factor among the reasons for deformation. Numerical simulations using limit equilibriummodel, finite difference model and finite element model were performed for eight cross sections.Although safety factors are above 1.7 during the dry season, they become below 1.0 when groundwaterlevel raises to surface. The maximum displacement is about 15-3Ocm. However, safety factors increasedto above 2.4 and the maximum displacement is below 2.08cm after remedial treatment, Indicating thatthe slope becomes stable.
Estimation of Conductivity Tensor of Fractured Rocks from Single-hole Packer test
The Journal of Engineering Geology, volume 10, issue 1, 2000, Pages 13~25
A three-dimensional discrete fracture network model based on probabilistic characteristics of fracture geometry and transmissivity was designed to calculate the conductivity tensor and to estimate theanisotropy of conductivity. The conductivities,
, obtained from the numerical simulation of single-holepacker test corresponded well to those from the field tests. From this, it can be concluded that thefracture network model designed in this study can represent hydraulic characteristics of in-situ fractured rock mass. Block-scale conductivities,
, estimated from the modelling of steady-state flow through the REV-scale block were ranged between the arithmetic mean and harmonic mean of theconductivity estimates from packer tests. The conductivity along north-south direction was 1.4 timesgreater than that along the east-west direction. It was concluded that the anisotropy of conductivitywas insignificant. It was also found that there was a little correlation between
. This would be to that the conductivities from the packer test simulation was strongly dependent on thetransmissivity and the number of fractures within the packer test intervals.
Hydrogeology and Vulnerability of Groundwater Contamination of a Mountainous Area in Kangwon Province
The Journal of Engineering Geology, volume 10, issue 1, 2000, Pages 27~38
We hydrogeologically studied a mountainous area and its vulnerability to groundwater contamination. Groundwater flow and recharge occur mainly through a network of fractures in this areaTransmissivity and storativity obtained from slug, slug interference, and pumping tests range from 3.2
/min and 1.3
, respectively. The groundwater was contaminated bylivestock activities in the upgradient. The groundwater in the downgradient residential area wasthreatened by the upgradient livestock activities.
Combination Investigation Method for Grounwater Development Around Shinbuk area in Kangwon-Do
The Journal of Engineering Geology, volume 10, issue 1, 2000, Pages 39~50
Because of numerous mountain region, agricultural affairs work can't be done without groundwater in Kangwon Do area. Especially to improve high mountain area vegetable quality and raise income offarmers, both of groundwater and hydrothermal system to keep adequate temperature in hot and coldseason have to be developed. Domestic groundwater was developed for the use of agricultural watersince 1960. Exact investigation and control of groundwater are greatly required in utilizing undergroundspace as subway, nuclear power plant, oil and hazardous waste storehouse. Groundwater contaminationowing to industrial irrigation, trash decomposition can have a serious effect on human health and rustof underground building. In this study, global prospecting system are applied to detect groundwater, using electrical, seismic and georadar prospecting method.
Geochemistry and Origin of
-rich Groundwater from Sedimentary Rocks of Kyungsang System
The Journal of Engineering Geology, volume 10, issue 1, 2000, Pages 51~62
-richrich water pumps or springs out at two sites (Sinchon and Kohran) consisting of Cretaceous sedimentary rocks in Kyungpook area. The water has been long known as its soda pop-liketaste and therapeutic effect against calcium deficit, stomach and skin troubles, etc. The water arecharacterized by a high
and electrical conductance (1,093~2,810
-rich water belongs to Ca(Na)-
type in chemical classification. The contents of Ca, Mg, Na, HCO
and Fe of
-rich water show much higher values than those of general groundwater Environmental isotopic data
indicate that the water is ofmeteoric origin recharged after 1950s. The
in the springs seems to be originated from deep-seatedsource related to acidic porphyry and granite nearby sedimentary rocks. Carbonate minerals and albiteare likely to be the major source minerals of the dissoved inorganic constituents in the
-rich water.The equilibrium state between major minerals and
-rich water was calculated by a thermodynamicprogram.
Basic Aspects of Shear Wave Measurement in a Borehole
Kitsunezaki, Choro ;
The Journal of Engineering Geology, volume 10, issue 1, 2000, Pages 63~77
The dipole method is now popular means for S-wave logging. Essential features of this method are explained, emphasizing basic concept based on approximation of the long-wavelength and the far-field. History of my researches concerned is shortly reviewed as background to reach the idea of this method. Short wavelength behavior of the dipole method is simply reviewed. Methods to reject tube wave noise are commented.
A Case Study of Correlation between Inflows and Geological Structures around Underground Caverns
The Journal of Engineering Geology, volume 10, issue 1, 2000, Pages 79~93
When caverns are excavated, it is very important to understand the distribution and charateristics of geological structures because the structures have an significant effect on grouting, rock reinforcement, and groundwater flow, etc. The main water bearing fractures have an orientation of N50~60W and these fractures are known as tension fractures. Their orientation coincides with a long elliptical axis ofpumping test, and they cross the tension fractures of N10~30E. They have typical fracture systems ofrhombic type in this area.