岩土工程学报Issue(5)：955-960,6.DOI:10.11779/CJGE201405021
长大深埋隧道工程区地应力状态预测与实例分析
Prediction of stress field of super-long deep-buried tunnel area and case analysis
摘要
Abstract
The prediction of stress field of deep-buried tunnel area is a tough problem that many scientists and engineers have to face with. Herein, a solution is put forward for this problem. The databases from the WSM and the Crustal Stress Environment of China Mainland and the previous research findings can offer indications of stress orientations of an engineering area;at the same time, the Andersonian theory can be used to analyze the possible stress orientation of an engineering area. After the limited in-situ stress measurements are obtained, the Hoek-Brown criterion can be used to estimate the strength of rock mass in the engineering area by utilizing the geotechnical investigation data, and then the modified Sheorey model can be employed to predict the stress field of areas without stress data by taking the existing in-situ stress measurements as input parameters. One planned hydroelectric power plant is located on the western edge of Tibet Plateau. Three hydro-fracturing stress measurement campaigns indicate that the stress state of the engineering area is SH>Sh>SV or SH>SV>Sh. The measured orientation of SH is NEE (N70.3°-89°E), and the regional orientation of SH from WSM is NE, which may imply that the stress orientation of shallow crust may be affected by landforms. The modified Sheorey model is utilized to predict the stress state along the water sewage tunnel for the plant. The predicted results indicate that the maximum and minimum horizontal principal stresses of the place with the greatest burial depth are up to 56.70 and 40.14 MPa, to which the relevant organizations pay more attention. According to the application case, the proposed method works well.关键词
应力场预测/修正Sheorey模型/世界应力图/应力测量/青藏高原西缘Key words
prediction of stress field/modified Sheorey model/world stress map/stress measurement/western edge of Tibet Plateau分类
建筑与水利引用本文复制引用
王成虎,邢博瑞,陈永前..长大深埋隧道工程区地应力状态预测与实例分析[J].岩土工程学报,2014,(5):955-960,6.基金项目
国家自然科学基金面上基金项目（41274100，51038009）；中央级科研院所基本科研业务专项项目(ZDJ2012-20) （ZDJ2012-20）
