All Issue

2024 Vol.34, Issue 4 Preview Page

Research Article

Shallow In Situ Stress Measurements along the Northeastern Boundary of Seoul Granite Measured Using Hydraulic Fracturing

수압파쇄시험으로 측정한 서울화강암 동북부 경계 지역의 천부응력분포

Ik Woo1*
우 익1*
1Professor, Department of Coastal Construction Engineering, Kunsan National University
1군산대학교 해양건설공학과 교수
*Corresponding Author
31 December 2024. pp. 609-624
PDF XML Citation
Abstract

Hydraulic fracturing tests were conducted in Seoul, northern Seoul, and Gyeonggi Province. The Seoul Granite is widespread in the study area and surrounded by Precambrian gneiss. The high stresses measured along the northeastern boundary of Seoul Granite in the northern part of Seoul were controlled by topographical rather than geological factors. The general orientation of the principal stresses measured in this study is similar to that of the current general stress field on the Korean peninsula. The orientation of the maximum principal stresses near to a fault is similar to that of the fault, due to the influence of the fault. The tensile strengths of the Seoul Granite estimated by the hydraulic fracturing are generally greater than that of the Precambrian gneiss, and the variation in tensile strength is greater in the Seoul Granite.

Keywords
Seoul Granite
Precambrian gneiss
hydraulic fracturing
in situ stress
tensile strength

본 연구는 서울과 서울 북부 및 경기 지역에서 수행한 수압파쇄시험 결과를 이 지역에 광범위하게 분포하고 있는 서울화강암과 이를 둘러싸고 있는 선캠브리아기 편마암으로 구분하여 분석하였다. 서울 북부에 분포하는 서울화강암의 동북부 경계 지역에서 측정된 천부 고응력은 지질적인 요인보다는 지형적 요인에 의한 영향이 더 큰 것으로 나타났다. 연구지역에서 측정한 응력장의 방향은 현재 한반도의 전체 응력장 방향과 유사한 방향으로 분포하고 있으나, 단층이 지나가는 인근 측점 중 일부의 응력장의 방향은 단층의 영향으로 단층과 유사한 방향을 나타내고 있다. 수압파쇄법으로 산정한 인장강도는 서울화강암이 선캠브리아기 편마암보다 전반적으로 크게 나타났으며, 인장강도 변화의 폭도 더 크게 나타났다.

키워드
서울화강암
선캠브리아기 편마암
수압파쇄
초기응력
인장강도
References
1

Amadei, B., Stephansson, O., 1997, Rock stress and its measurement, Springer Science & Business Media, 499p.

10.1007/978-94-011-5346-1
2

Bae, S.H., Jeon, S.W., Choi, Y.K., Kim, H.S., 2002, Study on characteristics of in-situ rock stress state in mountainous region by hydraulic fracturing method, Tunnelling Technology, 4(1), 57-70 (in Korean with English abstract).

3

Bae, S.H., Jeon, S.W., Choi, Y.K., Kim, J.M., 2003, Study on characteristics of initial rock stress state at shallow depth of the gneiss region in the central part of Seoul, Tunnelling Technology, 5(2), 147-159 (in Korean with English abstract).

4

Bae, S.H., Jeon, S.W., Kim, H.S., Kim, J.M., 2005, Characteristics of excessive horizontal stress in Korea by hydraulic fracturing stress measurement, Journal of the Korean Geotechnical Society, 21(5), 103-110 (in Korean with English abstract).

5

Bae, S.H., Jeon, S.W., Kim, J.S., Park, K.G., 2016, Study on the current horizontal stress characteristics of the Tertiary rock formations in the Pohang Basin by integrated analysis with in-situ rock stress measurement and borehole scanning data set, Tunnel and Underground Space, 26(4), 304-315 (in Korean with English abstract).

10.7474/TUS.2016.26.4.304
6

Bae, S.H., Kim, J.M., Kim, J.S., Lee, Y.H., 2008, In-situ rock stress measurement at the water tunnel sites in the OO oil storage facility with hydraulic fracturing method, Tunnel and Underground Space, 18(1), 80-89 (in Korean with English abstract).

7

Choi, S.W., 2008, Analysis of in-situ stress regime from hydraulic fracturing field measurements in Korea, Journal of Industrial Technology, Kangwon Natl. Univ., Korea, 28(B), 111-116 (in Korean with English abstract).

8

Haimson, B.C., 1974, Determination of in-situ stresses around underground excavations by means of hydraulic fracturing, Final Technical Report, Contract No. H0220080, U.S. Bureau of Mines, 113p.

10.1016/0148-9062(74)92093-2
9

Haimson, B.C., Cornet, F.H., 2003, ISRM Suggested Methods for rock stress estimation-Part 3: Hydraulic fracturing (HF) and/or hydraulic testing of pre-existing fractures (HTPF), International Journal of Rock Mechanics and Mining Sciences, 40(7-8), 1011-1020.

10.1016/j.ijrmms.2003.08.002
10

Haimson, B.C., Lee, M.Y., Song, I., 2003, Shallow hydraulic fracturing measurements in Korea support tectonic and seismic indicators of regional stress, International Journal of Rock Mechanics and Mining Sciences, 40(7-8), 1243-1256.

10.1016/S1365-1609(03)00119-9
11

Heidbach, O., Rajabi, M., Reiter, K., Ziegler, M., WSM Team, 2016, World stress map database release 2016, V. 1.1, GFZ Data Services, https://doi.org/10.5880/WSM.2016.001.

12

Hubbert, M.K., Willis, D.G., 1957, Mechanics of hydraulic fracturing, Transactions of Society of Petroleum Engineers of AIME, 210, 153-163.

10.2118/686-G
13

Jun, M.S., Jeon, J.S., 2010, Focal mechanism in and around the Korean Peninsula, Geophysics and Geophysical Exploration, 13(3), 198-202 (in Korean with English abstract).

14

Kim, H., Synn, J.H., Park, C., Song, W.K., Park, E.S., Jung, Y.B., Cheon, D.S., Bae, S.H., Choi, S.O., Chang, C.D., Min, K.B., 2021, Korea stress map 2020 using hydraulic fracturing and overcoring data, Tunnel and Underground Space, 31(3), 145-166 (in Korean with English abstract).

10.7474/TUS.2021.31.3.145
15

Kirsch, E.G., 1898, Die Theorie der Elastizität und die Bedürfnisse der Festigkeitslehre, Zeitschrift des Vereines Deutscher Ingenieure, 42, 797-807(in German).

16

Koh, H.J., Song, K.Y., 2005, Geological report of the Uijeongbu sheet (scale 1:50,000), Korea Institute of Geoscience and Mineral Resources, 54p (in Korean with English abstract).

17

Lee, M.Y., Haimson, B.C., 1989, Statistical evaluation of hydraulic fracturing stress measurement parameters, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 26(6), 447-456.

10.1016/0148-9062(89)91420-4
18

Ryu, D.W., Choi, S.O., Lee, H.K., 1996, Developement and application of statistical hydrofracturing data processing program, Tunnel and Underground, 6(3), 209-222 (in Korean with English abstract).

19

Synn, J.H., Park, C., Lee, B.J., 2013, Regional distribution pattern and geo-historical transition of in-situ stress fields in the Korean peninsula, Tunnel and Underground Space, 23(6), 457-469 (in Korean with English abstract).

10.7474/TUS.2013.23.6.457
20

Won, C.K., Paek, K.H., Chi, J.M., Goo, M.O., Ahn, H.R., 1981, Exploratory text of the geological map of Ddug Seom sheet (scale 1:50,000), Korea Institute of Energy and Resources, 51p (in Korean with English abstract).

21

Zang, A., Stephansson, O., 2009, Stress field of the Earth's crust, Springer, 326p.

10.1007/978-1-4020-8444-7
Information
  • Publisher :Korean Society of Engineering Geology
  • Publisher(Ko) :대한지질공학회
  • Journal Title :The Journal of Engineering Geology
  • Journal Title(Ko) :지질공학
  • Volume : 34
  • No :4
  • Pages :609-624
  • Received Date : 2024-12-04
  • Revised Date : 2024-12-17
  • Accepted Date : 2024-12-23
  • DOI :https://doi.org/10.9720/kseg.2024.4.609
Journal Informaiton The Journal of Engineering Geology The Journal of Engineering Geology
Online Submission
  • NRF
  • KOFST
  • KISTI Current Status
  • KISTI Cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close