地质雷达法对隧道初期支护的研究分析  

Research and Analysis of the Geological Radar Method on the Initial Support of Tunnel

作　　者：黄德镛[1] 陈雷[1] 陈发本 

机构地区：[1]昆明理工大学国土资源与工程学院,昆明650000 [2]云南省公路科技研究院,昆明650000

出　　处：《价值工程》2016年第26期150-153,共4页Value Engineering

摘　　要：文章以云南省高黎贡山隧道为工程实际,通过地质雷达技术对该隧道的初期支护质量进行检测,对地质雷达在隧道初期支护的检测准确性进行讨论。结果表明：在桩号K6＋910-K6＋865所测点的平均厚度为31.35cm,大于设计厚度22cm,与施工单位所提供的初喷厚度32cm相近。同时,本次抽测也对钢支撑位置及数量进行了检测,在桩号K6＋910-K6＋865段钢支撑间距与数量与设计距离和位置几乎一致,部分区域存在微小误差,原因可能与操作方法和施工条件有关。结论：总体上来说,本次检测达到了预期效果,能够证明地质雷达技术的准确性,其误差也是在许可范围内,说明地质雷达技术可以在今后的隧道检测中得以广泛应用。This paper taking Yunnan Gaoligongshan tunnel as the actual project, uses the geological radar technology to detect the tunnel primary support quality, and discusses the detecting accuracy of geological radar in tunnel initial support. The results show that the average thickness of the measured points in the pile number K6＋910？K6＋865 is 31.35c . m, greater than the design thickness of 22cm, and similar tothe initial spray thickness of 32cm provided by the construction unit. At the same time, in this sampling tests, the steel support position andquantity were also detected： in the K6＋910？K6＋865 section, the steel support spacing and quantity were almost identical ＂with the design distance and position, small errors existing in parts of the region, and the reason may be related to the operation method and the construction conditions. Conclusion： overall, the test reached expected effect, could prove the accuracy of geological radar technology, and the error is in the permission scope, showing that geological radar technology could been extensively applied in tunnel detection in the future.

关 键 词：地质雷达法 初期支护 混凝土喷层 检测厚度 

分 类 号：U455.7[建筑科学—桥梁与隧道工程]