Filling operations for drains of Ruoergai arctic-alpine wetland have such four types as damming with bag filling with earth and rock, earth and rockfill dam, concrete gravity dam and model dam.
若尔盖高寒湿地排水沟壑填堵分为土石袋筑坝、土石坝、混凝土重力坝和模板坝四种类型。
Filling operations for drains of Ruoergai arctic-alpine wetland have such four types as damming with bag filling with earth and rock, earth and rockfill dam, concrete gravity dam and model dam.
若尔盖高寒湿地排水沟壑填堵分为土石袋筑坝、土石坝、混凝土重力坝和模板坝四种类型。
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