CAJ | 학술논문

我国采用硬岩掘进机施工的项目,有一个突出的特点是TBM法和钻爆法充分结合,因而开始掘进前、中间转场或贯通后TBM都需要步进,甚至是长距离步进,TBM步进速度对工期影响较为明显。本文系统地总结了现有的TBM步进技术,重点论述目前效率最高、迅速得以推广应用的滑板式步进技术,包括结构与原理、步进流程、技术要点、应用效果、适应性改进、辅助工程需要注意的事项等。开敞式TBM采用滑板式步进技术具有设备投入少、施工设施投资少、步进速度快、适用于长短距离步进的优点。
아국채용경암굴진궤시공적항목,유일개돌출적특점시TBM법화찬폭법충분결합,인이개시굴진전、중간전장혹관통후TBM도수요보진,심지시장거리보진,TBM보진속도대공기영향교위명현。본문계통지총결료현유적TBM보진기술,중점논술목전효솔최고、신속득이추엄응용적활판식보진기술,포괄결구여원리、보진류정、기술요점、응용효과、괄응성개진、보조공정수요주의적사항등。개창식TBM채용활판식보진기술구유설비투입소、시공설시투자소、보진속도쾌、괄용우장단거리보진적우점。
When a tunnel is built by hard-rock TBM, there is a prominent feature that TBM and D&B ( drill and blast) are used in the same tunnel. Therefore, stepping of TBM, even long-distance stepping of TBM, has to be made before TBM driving, during site changing of TBM, or after TBM driving. TBM stepping speed will significantly affect the construction period for a project. In the paper, the existing TBM stepping techniques are systematically summarized, and the sliding-type TBM stepping technology, which has been widely applied due to its high efficiency, are presented. The technologies presented include the structure and principle of the sliding-type TBM stepping technology, the stepping process, the main technical points, the application result, the adaptability improvement, and supplementary facilities to which special attention should be paid. Sliding-type TBM stepping technology has many advantages, such as less equipment investment and facility investment, high stepping speed, and being suitable for both long-distance stepping and short-distance stepping.