CAJ | 학술논문

雷公浦小净距隧道右洞煤系地层段 YK70＋302～YK70＋299在施工过程中出现中夹岩塌方，从不良地质条件的影响和降雨的入渗以及前期地质勘探欠准确等方面分析塌方原因，结合工程具体情况，分析现有的初期支护方案在煤系地层中刚度不够，存在安全隐患，容易造成中夹岩塌方，选择小导管对塌方体和塌方空腔进行注浆，再进行分阶段开挖的措施来处理不良地质小净距隧道中夹岩塌方区是切实可行的方法。研究成果可为类似工程的设计、施工和研究提供借鉴。
뢰공포소정거수도우동매계지층단 YK70＋302～YK70＋299재시공과정중출현중협암탑방，종불량지질조건적영향화강우적입삼이급전기지질감탐흠준학등방면분석탑방원인，결합공정구체정황，분석현유적초기지호방안재매계지층중강도불구，존재안전은환，용역조성중협암탑방，선택소도관대탑방체화탑방공강진행주장，재진행분계단개알적조시래처리불량지질소정거수도중협암탑방구시절실가행적방법。연구성과가위유사공정적설계、시공화연구제공차감。
During Leigongpu Tunnel construction,interlaid rock was collapsed in section YK70 +302 ~YK70 +299 of right runnel under coal stratum.According to the specific situations,the reasons of collapse was analyzed from the poor geological conditions,rainfall infiltration,and the inaccuracy of early geological exploration,and so on.The initial support of existing programs is not rigid enough in the coal strata,and it may easy to cause collapse in interlaid rock.It is available to grout landslides and landslide body cavity with a small tube,and then excavate by stage to dispose collapse area in interlaid rock.The experiences and conclusions presented here can be adopted in the design,construction and research of similar tunnels.