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在本次TBM组装洞施工过程中,为解决起步段圆形断面施钻、爆破成型、出碴难的问题,在措施上主要采取了更改多功能台架,周边眼布局及药量控制,反铲出碴等。先后处理解决了量测定位、光爆成型、锚喷强度、围岩裂变等多项技术难题。笔者对此次TBM组装洞施工工艺流程、施工方法以及各个环节对施工质量的要求进行了分析。
During the construction of the TBM assembly hole, in order to solve the problem of the round section drilling, blasting and ballast difficult in the initial stage, the main measures taken were to change the multi-functional stage, the configuration of peripheral eyes and the dose control Shovel ballast and so on. Has solved the measurement of positioning, light burst forming, anchor spray strength, rock fission and many other technical problems. The author of the TBM assembly hole construction process, construction methods and various aspects of the construction quality requirements were analyzed.