Volcanoes erupt when the magma pockets beneath the surface the source of the spewing lava are under pressure.
火山爆发时岩浆流在地表面下被地壳压力挤出来。
In this paper, the relation model of water pressure and flow is built to explain the spewing mechanism. And consequently, the critical conditions of the spewing are put forward.
本文建立了盾构机内水压力递减模型，基于模型推导了水压力和流量的变化关系来用于解释喷涌发生的机理。
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