| Abstract: | Faultage, Karst landform, water bearing layer, cave, manpower and crude barriers; all of these pose grave threats to tunnel construction. Especially at the place where tunnel is pashed by big machines; the verge of stratum and faultage will pose grave threats to machines for constructing, and will heart construction workers, hold construction schedule, In order to avoid the occurrence of similar accidents, a lot of new technology appears in recent years, whose aim is to take meticulous geological survey before tunnel construction. |
