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以塑代钢,是矿井材料发展的方向之一,十多年来,不少采矿研究人员为之努力,使塑料管材在煤矿井下的供水、防尘等方面得到初步应用。但是,用塑料作矿井分层开采的假顶材料,国内外尚无研究先例。根据生产发展的需要和技术可能,我所就塑料网假顶进行了技术研究和性能试验,其目的是探讨以塑料网代替金属网作为分层开采的假顶的可能性。为此,塑料网必须达到下列技术要求:
In the plastic substitution of steel, is one of the direction of the development of mine materials, more than a decade, many mining researchers to work hard to make plastic pipe in the coal mine water supply, dust prevention and other aspects of the initial application. However, there is no precedent at home and abroad for fake top materials that are made of plastic for stratified mining. Based on the needs of production development and technical possibilities, I conducted a technical study and performance test on the plastic mesh roof to explore the possibility of replacing the metal mesh with a plastic net as a tiered top. To this end, plastic mesh must meet the following technical requirements: