A new paper in the journal Nature suggests the river's erosive action may be to blame.
最近自然杂志上的一片文章称这可能要归咎于密西西比河的侵蚀作用。
The pyrite which lies in the foundation rock under Geheyan Project can cause an erosive action to the Portland cement grouting material used in the curtain grouting.
隔河岩工程基础岩层中含有黄铁矿，它对帷幕灌浆的水泥浆材有腐蚀作用。
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