孔口管锚固技术在穿江工程中的应用

Application of Orifice-Pipe Anchorage Technology in River-Crossing Engineering

在穿江工程施工中,由于河床部位上覆岩体厚度偏薄,断裂构造发育,突涌水风险巨大。论文从方案选择、理论分析及现场试验等方面对孔口管锚固技术进行研究,并将研究成果应用在某配水工程的堵水及注浆施工中。在穿江工程7次锚固施钻过程中,成功利用研究的孔口管技术,及时对出水部位进行了封堵,确保了现场作业安全,实现了穿江工程的成功贯通。

In river-crossing engineering construction,due to the thin thickness of overlying rock mass and the development of fault structure,the risk of water surge is huge.In this paper,the anchorage technology of orifice pipe is studied from the aspects of scheme selection,theoretical analysis and field test.And the research results are applied to the water plugging and grouting construction of a water distribution project.In the process of seven times anchorage drilling in the river-crossing project,the outlet part was blocked in time by using the researched orifice pipe technology,which ensured the safety of the field operation and realized the successful through-through of the river-crossing project.