Field monitoring of splitting failure for surrounding rock masses and applications of energy dissipation model

Wang, Zhi-shen; Li, Yong; Zhu, Wei-shen; Xue, Yi-guo; Jiang, Bei; Sun, Yan-bo

추천

검색

자료유형: 학술저널

저자정보: Wang, Zhi-shen (Geotechnical & Structural Engineering Research Center, Shandong University) Li, Yong (Geotechnical & Structural Engineering Research Center, Shandong University) Zhu, Wei-shen (Geotechnical & Structural Engineering Research Center, Shandong University) Xue, Yi-guo (Geotechnical & Structural Engineering Research Center, Shandong University) Jiang, Bei (Geotechnical & Structural Engineering Research Center, Shandong University) Sun, Yan-bo (Shandong Luqiao Group CO. LTD.)

저널정보: 테크노프레스 Geomechanics & engineering Geomechanics & engineering 제12권 제4호

발행연도: 2017.1

수록면: 595 - 609 (15page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

Due to high in-situ stress and brittleness of rock mass, the surrounding rock masses of underground caverns are prone to appear splitting failure. In this paper, a kind of loading-unloading variable elastic modulus model has been initially proposed and developed based on energy dissipation principle, and the stress state of elements has been determined by a splitting failure criterion. Then the underground caverns of Dagangshan hydropower station is analyzed using the above model. For comparing with the monitoring results, the entire process of rock splitting failure has been achieved through monitoring the splitting failure on side walls of large-scale caverns in Dagangshan via borehole TV, micro-meter and deformation resistivity instrument. It shows that the maximum depth of splitting area in the downstream sidewall of the main power house is approximately 14 m, which is close to the numerical results, about 12.5 m based on the energy dissipation model. As monitoring result, the calculation indicates that the key point displacement of caverns decreases firstly with the distance from main powerhouse downstream side wall rising, and then increases, because this area gets close to the side wall of main transformer house and another smaller splitting zone formed here. Therefore it is concluded that the energy dissipation model can preferably present deformation and fracture zones in engineering, and be very useful for similar projects.

#high geostress #underground cavern group #splitting failure #in-situ monitoring #energy dissipation #opening displacement

참고문헌 (0)

참고문헌 신청

참고문헌이 DBpia에서 서비스 중이라면, [참고문헌 신청]을 통해 등록해보세요

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!