颚式破碎机在花岗岩采掘中受岩石强度性能的影响
颚式破碎机在花岗岩采掘中受岩石强度性能的影响(中文2500字,英文1600字)
摘要： 岩石强度性能的影响在颚式破碎机性能上取决于破碎的时间和岩石粒度分配。调查被分为了四个不同的岩石样品，既是从采掘场支离破碎的块状中挑选出的具有代表性的大理石，白云石，石灰石，和花岗岩样品。对每种样品都做了在相同的破碎时间和粒级分析下的无测限抗压强度和集中载荷试验。每一种样品的受力参数都和它们的破碎时间和各自岩石类型的粒度分配一一的关联起来。强度载荷试验表明花岗岩是最高的达到101.67MP的无测限抗压强度，6.43MP的点载荷试验，然而白云石在无测限抗压强度只达到了30.56，在点载荷试验的为0.95MP。通过国际社会岩石机械强度标准，花岗岩样品被分类为了具有很高的强度白云石为较低的强度。而且，花岗岩具有着最高的破碎时间（21.秒），白云石具有最少的破碎时间值（5.0秒）。基于试验的结果可以看到，各种岩石类型的破碎时间受到很多强度性能的影响。
Influence of some rock strength properties on jaw crusher performance in granite quarry
Abstract：The influence of rock strength properties on Jaw Crusher performance was carried out to determine the effect of rock strength on crushing time and grain size distribution of the rocks．Investigation was conducted on four different rock samples namely marble．dolomite．1imestone and granite which were representatively selected from fragmented lumps in quarries．Unconfined compressive strength and Point load tests were carried out on each rock sample as well as crushing time and size analysis．The results of the strength parameters of each sample were correlated with the crushing time and the grain size distribution of the rock types。The results of the strength tests show that granite has the highest mean value of 101.67 MPa for Unconfined Compressive Strength(UCS)test．6.43 MPa for Point Load test while dolomite has the least mean value of 30.56 MPa for UCS test and 0.95MPa for Point Load test。According to the International Society for Rock Mechanic OSRM)standard．the granite rock sample maybe classified as having very high strength and dolomite rock sample，low strength．Also，the granite rock has the highest crushing time(2 1．O s)and dolomite rock has the least value(5．0 s)．Based on the results of the investigation，it was found out that there is a great influence of strength properties on crushing time of rock types．
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