赣龙铁路马蹄经隧道在施工中遇到洞口30m上半断面全部变形垮塌的难题,而且初步方案屡遭失败。经过彻底探明地质情况,确定了滑坡体的存在。提出了相应的综合整治方案。介绍了滑坡整治方法。进一步强调隧道工程详细地质勘查的重要性。

During the top heading construction of Matijing tunnel on GanzhouLongyan railway, huge deformation occurs to the 30mlong exit portal section, which is followed by full collapse. Several treatment options are attempted, but unfortunately no success is achieved. After thorough geological investigations, it is determined that there exist landslide, on basis of which comprehensive treatment plan is prepared. The article presents the landslide treatment method, demonstrating the great importance of thorough geological investigations in tunnel engineering works.