翔安海底隧道爆破开挖围岩松动圈数值模拟及测试分析

摘要

结合翔安海底隧道的工程实践,运用FLAC3D软件对爆破后松动圈进行了数值模拟研究,采用超声测井探测方法,对隧道中极具代表性的A1标F4风化槽段围岩松动圈进行了测试分析,将其结果与数值模拟进行对比分析,表明数值模拟结果与现场测试结果规律具有一致性.研究结果为围岩松动圈支护参数的确定提供了依据和指导.%According to the project construction of Xiang'an undersea tunnel, numerical simulation on loosen zone of surrounding rock after blasting was conducted by using FLAC3D software. And the ultrasonic wave method was applied to measure the loosening zone of representative Al tenders F4 weathering groove. By the contrast and analysis, it is indicated that the numerical results and the test results are consistent The research results provided a basis and guide for determining the support parameters for loosening zone of surrounding rock.