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>>
Ahn, Jong Sung;
Kim, Chun Soo;
Yoon, Si Tae;
Kim, Sun Joon;
Chung, Chan Ho;
Kim, Gye Nam
[1]
- Korea Atomic Energy Research Inst., Daeduk (Korea, Republic of)
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}
}
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}
}