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A study on the ground water flow and hydrogeochemical interaction in fractured rock masses. Evaluation of structural behavior, geological and hydrogeological characteristics

Technical Report:

Abstract

A study site, the Precambrian gneiss complex in the vincinity of Chungyang has been investigated by geologic surface mapping, tunnel mapping and core drilling with chemical analysis and microscopic observation of rock samples and fracture filling materials. Four boreholes at depths between 50 and 200m were drilled. They are located in a potential fracture zone, which was selected based on the topographic characterisitcs and the fracture survey data. The hydraulic characteristics are described based on the results of constant pressure injection test and cross hole test. In the single hole test, the test sections varied between 1 and 5 m. The hydraulic conductivity of local fracture zones ranges from 1xlO{sup -5} to lxlO{sup -7} m/sec whereas that of the intact rock within the depth of 50 m is in the range of 7xlO{sup -8} to 8xlO{sup -9} m/sec. The field dispersivity values obtained from an injection phase range from 0.15 to 4.5 m at varying depths. The whole thickness dispersivity on the 18 m section obtained from a withdrawal phase is 0.4 m. The dispersion test in two well non-circulation mode was carried out along a single fracture set at depth between 11.5-14.5m. The longitudinal dispersivity obtained from the two  More>>
Authors:
Ahn, Jong Sung; Kim, Chun Soo; Yoon, Si Tae; Kim, Sun Joon; Chung, Chan Ho; Kim, Gye Nam [1] 
  1. Korea Atomic Energy Research Inst., Daeduk (Korea, Republic of)
Publication Date:
Jan 01, 1991
Product Type:
Technical Report
Report Number:
KAERI-II/RR-2/90
Reference Number:
SCA: 540250; 052002; 580000; PA: AIX-23:016729; SN: 92000660795
Resource Relation:
Other Information: PBD: Jan 1991
Subject:
54 ENVIRONMENTAL SCIENCES; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 58 GEOSCIENCES; GEOCHEMISTRY; GROUND WATER; FLUID FLOW; ROCKS; GEOLOGIC FRACTURES; CHEMICAL REACTIONS; GNEISSES; HYDRAULIC FRACTURING; 540250; 052002; 580000; SITE RESOURCE AND USE STUDIES; WASTE DISPOSAL AND STORAGE; GEOSCIENCES
OSTI ID:
10117446
Research Organizations:
Korea Atomic Energy Research Inst., Daeduk (Korea, Republic of)
Country of Origin:
Korea, Republic of
Language:
Korean
Other Identifying Numbers:
Other: ON: DE92616322; TRN: KR9100138016729
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
175 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Ahn, Jong Sung, Kim, Chun Soo, Yoon, Si Tae, Kim, Sun Joon, Chung, Chan Ho, and Kim, Gye Nam. A study on the ground water flow and hydrogeochemical interaction in fractured rock masses. Evaluation of structural behavior, geological and hydrogeological characteristics. Korea, Republic of: N. p., 1991. Web.
Ahn, Jong Sung, Kim, Chun Soo, Yoon, Si Tae, Kim, Sun Joon, Chung, Chan Ho, & Kim, Gye Nam. A study on the ground water flow and hydrogeochemical interaction in fractured rock masses. Evaluation of structural behavior, geological and hydrogeological characteristics. Korea, Republic of.
Ahn, Jong Sung, Kim, Chun Soo, Yoon, Si Tae, Kim, Sun Joon, Chung, Chan Ho, and Kim, Gye Nam. 1991. "A study on the ground water flow and hydrogeochemical interaction in fractured rock masses. Evaluation of structural behavior, geological and hydrogeological characteristics." Korea, Republic of.
@misc{etde_10117446,
title = {A study on the ground water flow and hydrogeochemical interaction in fractured rock masses. Evaluation of structural behavior, geological and hydrogeological characteristics}
author = {Ahn, Jong Sung, Kim, Chun Soo, Yoon, Si Tae, Kim, Sun Joon, Chung, Chan Ho, and Kim, Gye Nam}
abstractNote = {A study site, the Precambrian gneiss complex in the vincinity of Chungyang has been investigated by geologic surface mapping, tunnel mapping and core drilling with chemical analysis and microscopic observation of rock samples and fracture filling materials. Four boreholes at depths between 50 and 200m were drilled. They are located in a potential fracture zone, which was selected based on the topographic characterisitcs and the fracture survey data. The hydraulic characteristics are described based on the results of constant pressure injection test and cross hole test. In the single hole test, the test sections varied between 1 and 5 m. The hydraulic conductivity of local fracture zones ranges from 1xlO{sup -5} to lxlO{sup -7} m/sec whereas that of the intact rock within the depth of 50 m is in the range of 7xlO{sup -8} to 8xlO{sup -9} m/sec. The field dispersivity values obtained from an injection phase range from 0.15 to 4.5 m at varying depths. The whole thickness dispersivity on the 18 m section obtained from a withdrawal phase is 0.4 m. The dispersion test in two well non-circulation mode was carried out along a single fracture set at depth between 11.5-14.5m. The longitudinal dispersivity obtained from the two well test is 8.14 m. The identified minerals of host rocks are quartz, K-feldspar,plagioclase, biotite, muscovite, sericite, chlorite, calcite, pyrite, zircon and opaque minerals. The primary minerals such as feldspar and biotite are highly altered into sericite and chlorite respectively. The fracture-filling materials from core samples identified by as calcite, kaolinite, smectite, chlorite, illitite, quartz, pyrite with fe- and Mn-oxides. (Author).}
place = {Korea, Republic of}
year = {1991}
month = {Jan}
}