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Study of Geological Log Database for Public Wells, Jeju Island

제주도 공공 관정 지질주상도 DB 구축 소개

Pak, Song-Hyon;Koh, Giwon;Park, Junbeom;Moon, Dukchul;Yoon, Woo Seok
박성현;고기원;박준범;문덕철;윤우석

  • Received : 2015.11.16
  • Accepted : 2015.12.24
  • Published : 2015.12.28

Abstract

This study introduces newly implemented geological well logs database for Jeju public water wells, built for a research project focusing on integrated hydrogeology database of Jeju Island. A detailed analysis of the existing 1,200 Jeju Island geological logs for the public wells developed since 1970 revealed six major indications to be improved for their use in Jeju geological logs DB construction: (1) lack of uniformity in rock name classification, (2) poor definitions of pyroclastic deposits and sand and gravel layers, (3) lack of well borehole aquifer information, (4) lack of information on well screen installation in many water wells, (5) differences by person in geological logging descriptions. A new Jeju geological logs DB enabling standardized input and output formats has been implemented to overcome the above indications by reestablishing the names of Jeju volcanic and sedimentary rocks and utilizing a commercial, database-based input structured, geological log program. The newly designed database structure in geological log program enables users to store a large number of geology, well drilling, and test data at the standardized DB input structure. Also, well borehole groundwater and aquifer test data can be easily added without modifying the existing database structure. Thus, the newly implemented geological logs DB could be a standardized DB for a large number of Jeju existing public wells and new wells to be developed in the future at Jeju Island. Also, the new geological logs DB will be a basis for ongoing project 'Developing GIS-based integrated interpretation system for Jeju Island hydrogeology'.

Keywords

Geological logs DB;Jeju public wells

References

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Acknowledgement

Grant : 제주지역 기후변화 적응을 위한 통합 수자원 관리 기술개발

Supported by : 국토교통부