The expansive laterite of Natong test roadbed engineering in Nanning Kunming railway is a representative in Nanning basin.
南昆铁路那桐路基试验工点的膨胀性红土在南宁盆地颇具代表性。
The Jiazhuqing tunnel in Nanning Kunming Railway is a kind of strong pressured tunnel which was the first tunnel designed and constructed by our country.
南昆线家竹箐隧道是首座由我国自行设计施工的强挤压型隧道。
The exit of Jia Zhu Qing tunnel in Nanning-Kunming Railway lies to Fang Ma Ping section where both debris flow and siltation are potential hazards affecting long-term safety of the rail way.
南昆铁路家竹菁隧道出口至放马坪垭口沿段家河下游盲谷一段线路，存在泥石流及河床淤涨两大潜灾。
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