不规则煤岩的力学特性试验研究
发布时间：2019-06-09 15:22
【摘要】：以马兰选煤厂煤岩为研究对象,进行了不规则煤岩力学特性试验。试验表明不规则煤岩强度具有离散性,且煤岩强度受煤岩粒度影响较大,随煤岩粒度减小,煤岩点载荷强度逐渐增加,且离散性逐渐升高。另外,煤岩强度具有明显的层理效应,垂直于层理面的点载荷强度明显高于平行于层理面的点载荷强度。随浸水时间增加,不规则煤岩点载荷强度先减小后趋于稳定。不规则煤岩点载荷强度随灰分增加逐渐升高,并且在高灰阶段增幅更大。
[Abstract]:Taking the coal and rock of Ma Lan Coal preparation Plant as the research object, the mechanical properties of irregular coal and rock were tested. The experimental results show that the strength of irregular coal and rock is discrete, and the strength of coal and rock is greatly affected by the particle size of coal and rock. With the decrease of particle size of coal and rock, the load strength of coal and rock point increases gradually, and the dispersion increases gradually. In addition, the strength of coal and rock has obvious bedding effect, and the point load strength perpendicular to the bedding surface is obviously higher than that parallel to the bedding surface. With the increase of immersion time, the load strength of irregular coal and rock points decreases at first and then tends to be stable. The load strength of irregular coal and rock points increases gradually with the increase of ash content, and increases more in the stage of high ash.
【作者单位】： 中国矿业大学化工学院;国家煤加工与洁净化工程技术研究中心;
【基金】：十二五国家科技支撑计划课题(2014BAB01B01) 教育部新世纪优秀人才支持计划(NCET-13-1020)
【分类号】：TD315
本文编号：2495653
[Abstract]:Taking the coal and rock of Ma Lan Coal preparation Plant as the research object, the mechanical properties of irregular coal and rock were tested. The experimental results show that the strength of irregular coal and rock is discrete, and the strength of coal and rock is greatly affected by the particle size of coal and rock. With the decrease of particle size of coal and rock, the load strength of coal and rock point increases gradually, and the dispersion increases gradually. In addition, the strength of coal and rock has obvious bedding effect, and the point load strength perpendicular to the bedding surface is obviously higher than that parallel to the bedding surface. With the increase of immersion time, the load strength of irregular coal and rock points decreases at first and then tends to be stable. The load strength of irregular coal and rock points increases gradually with the increase of ash content, and increases more in the stage of high ash.
【作者单位】： 中国矿业大学化工学院;国家煤加工与洁净化工程技术研究中心;
【基金】：十二五国家科技支撑计划课题(2014BAB01B01) 教育部新世纪优秀人才支持计划(NCET-13-1020)
【分类号】：TD315
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