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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of Engineering Geology
Journal Basic Information
Journal DOI :
The Korea Society of Engineering Gelolgy
Editor in Chief :
Volume & Issues
Volume 4, Issue 3 - Dec 1994
Volume 4, Issue 2 - Sep 1994
Volume 4, Issue 1 - Apr 1994
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Mechanical Behavior of Cracked Rocks with Biotite Contents
The Journal of Engineering Geology, volume 4, issue 1, 1994, Pages 1~12
In general there are many cracks in rocks. In this study, we are concerned with the mechanical effect on cracks on the behavior of rocks. For this purpose, we used spedmens rnade of mortar having one crack set which has a constant length and same direction. Orientafion of this set was varied with respect to the loading axis. We did a number of uniaxial experiments and observed propagafion of the crack set to understand the effect set of the geometry of the crack set and its location on the mechanical behavior of the rocks with distributed crack sets. Finally, we analysed our experiments by FEM elastic analyses and Homogenization theory.
Analysis on Scale Effects to Hydraulic Conductivities in Crystalline Rock
The Journal of Engineering Geology, volume 4, issue 1, 1994, Pages 13~28
Hydrogeologic characteristics of crystalline rock including discontinuities is defined by the hydraulic data from the in situ test and by analytical method. Methodology and procedure of the in situ test are used in accordance with test purpose, site condition and characteristics of host rock Hydraulic conductivities in crystalline rock including discontinuifies such as fractured zone and joint, are defined by packer test and slug test. The results indicate Hvorslev' s theory of ground water flow in NX borehole, that the shorter of test interval is, the higher hydraulic conductivity is. This is an indicafion of the fact that the hydraulic rneasured were governed by scale effect of test interval, even at same borehole. According to the result of packer tests in two boreholes, it is understood that hydraulic conductivifies show variations according to the effect of as order of tests. In the comparison of hydraulic conductivifies from both of open borehole tests, the results are relatively well correrated in values. The hydraulic conductivity in the test intervals induding hydrogeologically significant discontinuity shows relatively higher value of hydraulic conductivity in vertical distribution of full depth.
Discrimination of Underground Explosions from Microearthquakes through the Pure-Continental Path
The Journal of Engineering Geology, volume 4, issue 1, 1994, Pages 29~42
Discrimination studies between microearthquakes and underground explosions are carried out in the pure-continental path of north-south within the Korean Peninsula. The characteristic waveforms for explosions and microearthquakes are investigated in the light of observation and synthetic seismograms. The characteristic waveform generation is minnly a function of source mechanism and ray-path and former influences more strongly than the latter.A double-couple source mechanism for microeatthquakes and a single-couple(force) mechanism for explosions are presented in this study. It is found for very shallow events to have outstanding of
waves in the transverse components that pass through the upper crust with period of 1 - 6 seconds and fundamental modes of Rayleigh waves,
in the vertical component with period 8-12 seconds. Furthermore it is pointed out that the first arrival amplitudes of SH waves for explosions are always srnall regardless of azimuth of stations since there is non-existence of nodal lines for the explosion mechanism. Theoretical seismograms for explosions show the first motions of compression with short wavelengths as well as mostly fundamental modes of Rayleight waves,
waves, whereas those of micro-earthquakes give either compression or dilatation according to the ack azimuth epicenter to stations and poor or non
waves and complicated
waves, depending on the focal depth.
Analysis of Geological Risk and Excavation Index using GIS Techinque
The Journal of Engineering Geology, volume 4, issue 1, 1994, Pages 43~55
Two thematic maps on environmental geology were produced in the Cheong-Ju area, with aids of GIS technique. They are landslide hazards & risk maps and cut-fill maps. The models of environmental geology map and digital database were established for creation of these maps by means of cartographic simulation in GIS. These special maps are very important for understanding the environmental characteristics of the study area, and can be applied in the establishment of the regional land use planning. For instance, the landslide hazard and risk map can play very important role in the road design, and cut- fill map in the construction work in the area. The scoring system for landslide analysis was developed through the evaluation of each environmental geologic factor in relation to the others and reflects the relative imporatance of each factor. The excavation index(easy, intermediate and difficult) was evaluated through cut-fill analysis, and they can be very useftil for assessing the degree of excavation difficulty.
The Best Management Practice and Protectbn Stmtegies of Groundwater Resources of USA
The Journal of Engineering Geology, volume 4, issue 1, 1994, Pages 57~77
The best management programs(BMP) of groundwater resources is to proted from potential groundwater contanination and to use it as optimal yield. In this paper, the groundwater protection strategies and empirical assessment methodologies using in USA are presented. Those strategies shall be used for future groundwater management program of our country and part of them are alreay utilized for the protection plan of the groundwater resources.
Engineering Geology of Soft Marine Sediments along the Western Coastal Area of korea
The Journal of Engineering Geology, volume 4, issue 1, 1994, Pages 79~90
Development of industries and increasing population demand civil engineering projects of various types and sizes to be looated along the ooastal aaaas where extremely soft marine sedirnents are encountered. These sediments present settlement and stability problems, among others, and consequently, cost increase and schedule delay are resulted.Insulfident understanding of the basic nature of the soft formations dulling design and construction phases result in catastrophicfailures all too often. In order to provide safe and economic solutions to these problems, utilization of various related disciplines should be made for analyses. However, this paper will primarily rely in portions of paleoclimatology, sedimentology, and soil mechanics to define the problems and to provide basic understanding of the sediment, and the directions and methodology for the analyses.
Intersection Angle dependant correction of Orientation Data
The Journal of Engineering Geology, volume 4, issue 1, 1994, Pages 91~93