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自1994年以来,韩国的土木工程师们首次接触到水压致裂法,在仪器开发、解释技法领域均有长足进展。在仪器开发方面:第一代水力致裂试验装备为管道形状,操作较为困难,之后简化到管线状,至今已研制出更加小型化、便于操作的设备。在解释技法领域也取得很多成就:水力致裂应力曲线中最难判读的龟裂闭锁压力曲线,也可以利用各种分析方法自动锁定。通过过去10a年来的探测经验,韩国已积累了国内大部分地区地应力的检测结果,而且这些参数资料一直在隧道工程的各种设计中得到应用。因此,考虑到沿岸地区的地应力测试固有的局限性,路域地区的测试资料可作为较好的参考资料,将其应用于海底隧道工程的设计当中。
Since 1994, civil engineers in South Korea have been exposed to hydraulic fracturing for the first time, making great strides in both instrument development and interpretation techniques. In instrument development: The first generation of hydraulic fracturing test equipment for the pipeline shape, the operation is more difficult, then simplified to the pipeline, has been developed more compact, easy to operate equipment. In the field of interpretation techniques also made many achievements: hydraulic fracture curve of the most difficult to read the interpretation of the crack closure pressure curve, you can also use a variety of analytical methods to automatically lock. Through the past 10 years of exploration experience, South Korea has accumulated most of the country’s stress in the test results, and these parameters have been used in a variety of tunneling design has been applied. Therefore, given the inherent limitations of in-situ stress tests in coastal areas, test data in the road area can be used as a good reference for the design of subsea tunnel projects.