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在人们的印象中,火山是一个恶魔,它一旦发作,会喷射出炽热的岩流,给人们带来灾难。但是,火山也能造福于人类。由于现化新型、高层建筑的兴起和发展,轻体建筑材料的需求日益增加,火山渣就成了良好的轻体建筑材料。火山渣是一种基性岩浆,通过狭隘的火山通道喷出地表,并遽其围岩碎块堆积成山,形成了火山碎屑锥。在高温,高压条件下,火山猛烈地喷发,这种含有大量气体的岩浆喷射到1000—2000米高空,随风飘扬,洒落在火山口周围方圆几十至几百公里,形
In people’s minds, the volcano is a demon. Once it starts, it will blow out hot streams of rock and bring disaster to people. However, volcanoes can also benefit people. Due to the rise and development of modern new-type and high-rise buildings, the demand for lightweight building materials is increasing, and volcanic slag has become a good lightweight building material. The volcanic slag is a basic magma that blew out the surface through a narrow volcanic channel and piled up with fragments of surrounding rocks to form a pyroclastic cone. Under the conditions of high temperature and high pressure, the volcano violently erupted. This magma containing a large amount of gas was sprayed to an altitude of 1,000-2,000 meters. It fluttered with the wind and fell to tens or hundreds of kilometers around the crater.