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高寒山区赛里木湖隧道穿越断层涌水带处治技术研究

CUI Jingchuan,LIU Kaizhi,PENG Wenbo

Journal of Civil Engineering and Management（2022）

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Abstract
针对高寒山区赛里木湖隧道穿越断层破碎涌水带的实际情况,为避免施工灾害发生,提高围岩强度,降低围岩的透水性能,提出了以超前地质预报为先导,以周边超前帷幕注浆+加密加长超前小导管支护+型钢钢架及锚网喷支护+径向注浆为手段的综合处治方案.通过现场监测表明:处治方案可明显提高围岩完整程度和强度,施工过程中未发生突水涌泥现象,隧道断面净空收敛和拱顶下沉稳定速度较快,最终变形值较小,围岩压力与初期支护内力值均较小.
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