Construction Technique of Crossing Contact Zone Between Strong Water-rich Soluble Rock and Non-soluble Rock
Based on the actual situation of Zhulinwan Tunnel,the construction technique of crossing contact zone between strong water-rich soluble rock and non-soluble rock is analyzed in detail from the key and difficult points in constructing.The research shows that in the tunnel construction through the contact zone of strong water-rich soluble rock and non-soluble rock,the advanced geological prediction technology is used,the tunnel seismic pre-diction method(TSP method)is adopted for long distance prediction,the geological radar combined with infrared detection method is used for middle distance prediction,and the location,shape and scale of the karst verified by advanced geological prediction is verified by advanced exploration hole.Through the cross application of different advanced prediction forms,the location and characteristics of karst caves and grooves in front of tunnel construc-tion can be accurately grasped.In view of the different distribution and characteristics of karst encountered in the construction,the corresponding construction treatments are taken,and the construction process through the spe-cial geological contact zone between strong water-rich soluble rock and non-soluble rock is optimized,which can obtain the best benefits on the basis of construction quality guaranteed.
highway tunneladvanced predictiona burst of waterwater-rich soluble rockkarst cave
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