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隧道施工难免会穿越复杂的地质情况.时常会遇到塌方的事故,但是塌方同时出现涌水.就会给塌方处理施工带来很大的困难,如果施工处理方法和工序操作不当.会引起更大的垮塌。包头至茂名高速公路(安康至陕川界段)毛坝1~#隧道左线ZK297+640涌水塌方段地质构造极其复杂.塌方段上方涌水量大,地下水流垂直穿过上部围岩.水头压力大:并且塌方体坍碴破碎岩石与大块硬质孤石混杂。为此.研究并实施了自进式锚杆结合小导管预注双液浆的施工方案.快速、安全、高效通过上述复杂的地质灾害影响段,可供类似工程参考。
Tunnel construction will inevitably cross the complex geological conditions. Often encounter landslide accidents, but at the same time collapse landslides will cause great difficulties to the collapse of the construction process, if the construction methods and procedures for improper operation will cause more Collapse. Baotou to Maoming Expressway (Ankang to Shanchuan sector) Mau dam 1 ~ # tunnel left ZK297 + 640 water collapse section of the geological structure is extremely complicated. Collapse above the water inflow, groundwater flow vertically through the upper rock. Head pressure Large: And the collapse body crushing broken rocks mixed with large hard boulders. Therefore, the construction scheme of self-propelled anchor combined with small-pipe pre-injection of double slurry was researched and implemented, which can be used for reference to similar projects quickly, safely and efficiently through the above complex geological disasters influence section.