影响汉口地区地铁联络通道施工的地质风险探讨

A Discussion on the Geological Risks Influencing the Construction of Connection Galleries of Metro Works in the Hankou Area

结合汉口地铁沿线地质状况,讨论在工程实践中影响汉口地区地铁联络通道施工的地质风险(如局部地质突变,勘察资料未能反映的恶劣地质状态,承压水作用下的喷涌风险,强渗透性引起的风险,季节性降水引起的地质差异及地质突变引起的冻融过快等),提出在完善专项基础勘察资料,增加针对性的地质勘察孔,及时进行设计变更的处理,采取冻结过程控制,引进和完善综合地质预报技术,加强管理及培养专业技术人才等方面规避风险的一些建议,旨在总结经验并提高武汉地铁风险控制效果。

The geological risks influencing the construction of connection galleries of Metro works in Hankou,such as the abrupt change of the geological condition of the local area,poor geological conditions unrevealed by surveys,the risk of water outburst under high aquifer water pressure,risks associated with high permeability,differences in the geological conditions caused by seasonal rainfalls,and the sudden freezing and de-frosting caused by abrupt geological change,are discussed.Advices,including perfecting the basic geological survey data,increasing the exploration drilling,timely design modification,the use of freezing controls,adoption of comprehensive geological prediction technologies,management improvement and professional development of technical staff,are provided to improve the risk management in Metro construction in Wuhan.