摘要
结合沪蓉西八字岭分岔式隧道三维地质力学模型试验,将静态电阻应变技术和光纤应变测试技术应用于地质力学模型试验中,并通过应变测试得到洞室周围关键点主应力的大小和方向.同时将试验测试结果与数值模拟结果进行对比分析,取得了较好的一致性.试验结果证明,只有将电阻应变片测试技术和光纤应变测试技术有机结合,才能得到较好的试验数据.
Combined with the technologies used in the 3D geomechanical model test of the Baziling branching-out tunnel, how to apply the two strain measurement technologies to the geomechanical model tests and how to get the values and angles of the principle stress of the measuring points through the received monitoring data of strain were given. Then, the tests measuring results were compared with the numerical simulation results, which were found to be in good agreement. The tests results proved that better experimental data could only be obtained by the combination of resistive strain measuring and optical fiber strain measuring.
出处
《山东大学学报（工学版）》
CAS
北大核心
2009年第3期129-134,共6页
Journal of Shandong University（Engineering Science）
基金
国家自然科学基金资助项目(90510019
59939190
50579033)
国家留学基金委2007国家建设高水平大学公派留学生资助项目
关键词
静态电阻应变测试
光纤应变测试
地质力学模型试验
数值模拟
岩土工程
static resistive strain measuring
optical fiber strain measuring
geo-mechanical model test
numerical simulation
geotechnical engineering
