国外某水利水电工程施工导流洞工程的地质条件十分特殊，各种地质结构面超常发育。

The construction diversion tunnel of a foreign project has special geologic conditions with various developed structural planes.

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在复杂地质条件小断面巷道掘进中实施光面爆破，其爆破参数和施工工艺有一定的特殊性。

When implementing the smooth blasting in small-sectional roadway excavation under complex geologic conditions, the blasting parameters and the implementation technology have a certain particularity.

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施工情况及经济效益分析表明，该方法在特殊地质条件下应用具有工效高、造价低的特点。

The dike construction and cost-benefit analysis shows that the construction technique is of high efficiency and low cost in application to special geological condition.

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