某轨道交通1号线雅蛮区间隧道岩溶突泥突水处治对策分析

Study on Treatment Countermeasures against Water and Mud Gushing in Manpo Station

以某轨道交通1号线雅蛮区间左线ZDK19+200处开挖支护施工时发生突水突泥事件为工程背景,分析了岩溶突泥突水的成因,完成对溶洞淤泥清理、一次涌泥处理、二次涌泥处理以及掌子面加固等措施;对右线地质进行补勘,提前处理隐藏的岩溶,对突泥突水引发的周边构造物裂缝和沉降问题进行加固处理;在此基础上,结合本次工程事故与前人对岩溶隧道的研究,对处理溶岩突泥突水问题提出可行性建议。

Based on the project to treat water and mud gushing in Manpo station of Guiyang, the cause of water and mud gushing is analyzed and measures are implemented of cleaning up sludge, primary treatment of gushing mud, second treatment of gushing mud and consolidation of tunnel face. In order to prevent such accident from happening, geological conditions of the right line are surveyed, and, the hidden karst is handled in advance. Then, cracks and settlement of surrounding structure caused by water and mud gushing are treated and reinforced. Combined with the engineering accident and early researches on karst tunnel, suggestions to handle water and mud gushing are put forward.