發(fā)布時(shí)間：2019-06-09 15:22

【摘要】：以馬蘭選煤廠煤巖為研究對(duì)象,進(jìn)行了不規(guī)則煤巖力學(xué)特性試驗(yàn)。試驗(yàn)表明不規(guī)則煤巖強(qiáng)度具有離散性,且煤巖強(qiáng)度受煤巖粒度影響較大,隨煤巖粒度減小,煤巖點(diǎn)載荷強(qiáng)度逐漸增加,且離散性逐漸升高。另外,煤巖強(qiáng)度具有明顯的層理效應(yīng),垂直于層理面的點(diǎn)載荷強(qiáng)度明顯高于平行于層理面的點(diǎn)載荷強(qiáng)度。隨浸水時(shí)間增加,不規(guī)則煤巖點(diǎn)載荷強(qiáng)度先減小后趨于穩(wěn)定。不規(guī)則煤巖點(diǎn)載荷強(qiáng)度隨灰分增加逐漸升高,并且在高灰階段增幅更大。
[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.
【作者單位】： 中國(guó)礦業(yè)大學(xué)化工學(xué)院;國(guó)家煤加工與潔凈化工程技術(shù)研究中心;
【基金】：十二五國(guó)家科技支撐計(jì)劃課題(2014BAB01B01) 教育部新世紀(jì)優(yōu)秀人才支持計(jì)劃(NCET-13-1020)
【分類(lèi)號(hào)】：TD315

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