隧道位于岩溶地区，岩溶角砾岩、白云质灰岩在雨季施工时易产生坍塌、突水和突泥现象。
The tunnel site is located in Karstic area with limestones gravels, where is easy to cave in when construction in raining season.
据角砾灰岩的岩石学特征及其与围岩地层的组合关系，该角砾岩主要属岩屑流和浊流沉积的深水碳酸盐岩。
According to their petrological characteristics and relations with surrounding rocks, we can regard them as deep water carbonate rocks of the debris flow and turbidity current sediments.
砂岩型矿体与灰岩型矿体之间由几个角砾岩筒连接，它们作为成矿时期的矿液运移通道存在。
As the channels where ore fluid migrates upwards during mineralization, several breccia pipes connect ore bodies of the sandstone and limestone types.
砂岩型矿体与灰岩型矿体之间由几个角砾岩筒连接，它们作为成矿时期的矿液运移通道存在。
As the channels where ore fluid migrates upwards during mineralization, several breccia pipes connect ore bodies of the sandstone and limestone types.
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