포항분지 제3기 이암의 도로 노체 활용을 위한 현장시험
A Pilot Test for the Utilization of Road Subsoil of the Tertiary Mudstone in Pohang Basin
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초록
본 연구는 성토구조체 현장실험을 통해 포항 지역의 제3기 이암을 도로 노체 재료로 활용하기 위한 가능성을 검토하는 제시하는 것이다. 이 이암은 신생대 제 3기층인 연암퇴적층에 분포하고 있는 미고결화 암석으로 슬레이킹, 팽윤 현상, 전단강도저하와 같은 물리적 문제와 산성배수라는 화학적 문제가 발생한다. 여러 복합적 문제 해결하기 위해 실내 배합 시험을 진행하였으며 제 3기 이암(90%)과 복합슬래그(제강 70%, 고로 30%)와 중화･코팅제 처리의 최적 배합 조건을 도출했으며, 이를실증하기 위해 실제 규모의 도로 성토구조체를 시공하여 구간별 현장 시험을 진행했다. 사전처리구간은 최적 배합 조건 설계로인해 안정이 유지되는 반면, 무처리구간은 자연 풍화가 빠르게 진행되어 구조적 문제 발생이 우려되었으며, 가적치구간은중화･코팅제 효과가 확인됨에 따라 임시 적치 시기에 적용 가능함을 확인했다.
Abstract
The purpose of this study is to present the possibility a utilization of the tertiary mudstone in Pohang as road subsoil material through pilot experiments on the road embankment structure. This mudstone is an unconsolidated rock that is distributed in the soft rock sedimentary layer, the tertiary layer of the Cenozoic, and causes physical problems such as slaking, swelling, and reduced shear strength and chemical problem like acid drainage. In order to solve various complex problems, an laboratory mixing test was conducted, and the optimal mixing conditions of the tertiary mudstone (90%), composite slag (steel making 70%, blast furnace 30%), and neutralization and coating agent treatment were derived. In order to prove its utilization, a real-scale road embankment structure was constructed and tests were conducted for each section. The pre-processing section is stable due to the design of optimal mixing conditions, while in post-processing section, natural weathering proceeded rapidly, and structural problems were concerned. Since the effect of neutralizing and coating agents was confirmed in temporary-staking section, the neutralizing and coating agents can be applied during the temporary storage period.
참고문헌 (23)
- Baek, I. W., "Characteristics of Banking Structures Constructed with Improved Tertiary Mudstone with Composite Slag and Neutralizing and Coating Agents", MS, pp.2020
- Inwoo Baek, "Neutralization effect of slag on the acid rock drainage", International Journal of Geo-Engineering, 12(1) (2021), Springer Science and Business Media LLC[DOI]
- 백인우, "포항분지 제3기 이암의 산성배수 발생 능력", 한국지반신소재학회 논문집, 19(2), pp.23~33 (2020), 한국지반신소재학회
- 반호기, "경기도 여주지역 미고결 이암의 공학적 특성", 한국지반환경공학회 논문집, 16(12), pp.53~58 (2015), 한국지반환경공학회[DOI]
- 최은경, "경상분지 쇄설성 퇴적암의 대자율 이방성 연구", 한국지반공학회논문집, 34(8), pp.5~14 (2018), 한국지반공학회[DOI]
- Japan Cement Association, "Ground improvement manual usingcement-based solidification material, Vol.3", pp.43~44 (2007)
- Jeong, G. -B., "A Study of Engineering Characteristics and Deformation Behavior of Pohang Mudstone", Ph.D., pp.2006
- Technology Development for Damage Reduction and Ecosystem Restoration in Acid Drainage Producing Construction Site, "KIGAM", 160~, pp.GP2017-041-2019 (2019)
- 김재곤, "건설현장 산성배수의 발생현황 및 피해저감대책", 자원환경지질, 40(5), pp.651~660 (2007), 대한자원환경지질학회
- Kim, J. W., "Estimation of Chemical Weathering Index and Rock Property Reduction Considering Anisotropy of Clastic Sedimentary Rock in Korea", Ph.D., pp.2017
- Kim, K. S., "Failure Characteristics of Cut Slopes of Shale in Kyoungsang Basin", Proceedings of the seminar and field workshop for mudstone and shale, pp.103~114 (2002), the Korean Geotechnical Society for Rock Mechanics Commission
- Korea Agency for Technology and Standards, "Standard Test Method for Plate Load Test on Soils for Road", KS F 2310, ~ (2016)
- Korea Agency for Technology and Standards, "Standard Test Method for Test Method for Soil Density by the Sand Replacement Method", KS F 2311, ~ (2016)
- Korea Expressway Corporation, "Highway Construction Material Quality Standards" (2016)
- 이규호, "건설현장 절취사면의 산성암반배수 발생특성과 잠재적 산발생능력 평가", 자원환경지질, 38(1), pp.91~99 (2005), 대한자원환경지질학회
- Lee, Y. N., "Problems in Construction of Tunnel and Rock Slope at Mudstone and Shale Region", Proceedings of the seminar and field workshop for mudstone and shale, pp.115~140 (2002), the Korean Geotechnical Society for Rock Mechanics Commission
- 이영휘, "응력수준 및 함수비에 따른 이암의 Creep 특성에 관한 연구", 한국지반환경공학회 논문집, 13(3), pp.39~51 (2012), 한국지반환경공학회
- Road Design Manual, "Ministry of Land, Infrastructure and Transport", ~ (2012)
- Construction Work Standard Product Calculation, "Ministry of Land, Infrastructure and Transport", ~ (2019)
- Park, H. D., "Engineering Geological Properties of Mudstone and Shale", Proceedings of the Seminar and Field Workshop for Mudstone and Shale, pp.18~30 (2002), the Korean Geotechnical Society for Rock Mechanics Commission
- A Review of Engineering Experiences with Expansive Soils in Highway Subgrades, Waterways Experiment Station, "Snethen, D. R.", 4~25, pp.NTIS No. ADA 020309 (1975)
- Taylor, R. K., "Laboratory Investigation of Mudrocks", Quarterly Journal of Engineering Geology and Hydrogeology, 14, pp.291~309 (1981)
- Van Eeckhout, E. M., "The Mechanisms of Strength Reduction Due to Moisture in Coal Mine Shales", International Journal of Rock Mechanics and Mining Science and Geomechanics Abstracts, 13(2), pp.61~67 (1976)