从1960年以来,为解决运矿沟的磨损问题,我厂先后进行了沥青混凝土、高强度混凝土、铁屑混凝土、花岗岩、铸铁槽和辉绿岩铸石等耐磨材料的试验。对四种常用砌筑材料进行了对比(附表),实测资料表明:辉绿岩铸石较其它材料效果显著。我厂新老运矿沟已全部推广使用。生产实践表明,辉绿岩铸石砌筑运矿沟有以下主要优点:1.不受坡度影响。坡度从6%增大到18%,大理岩皮石磨损量从130增加到260毫 Since 1960, in order to solve the problem of the abrasion of the coal mine ditch, our factory has conducted the tests of the wear resistant materials such as asphalt concrete, high strength concrete, iron filings concrete, granite, cast iron trough and diabase stone. The four commonly used masonry materials were compared (Table), the measured data show: diabase cast stone than other materials effect is significant. I plant new and old Yun Gully has been fully used. Production practice shows that diabase cast stone masonry Yun Ditch has the following main advantages: 1. Not affected by the slope. The slope increased from 6% to 18%, and the marble stone abrasion increased from 130 to 260 milliliters