【摘 要】
:
本文采用实验分析和数值计算相结合的方法,研究吸附解吸过程中煤的轴向应变和环向应变的特征以及体应变-时间模型。结果表明:轴向应变和环向应变呈现各向异性的特征,轴向应变
【机 构】
:
中国矿业大学(北京)资源与安全工程学院
【基金项目】
:
国家自然科学基金(51304212),中央高校基本科研业务费专项资金(2009QZ09)
论文部分内容阅读
本文采用实验分析和数值计算相结合的方法,研究吸附解吸过程中煤的轴向应变和环向应变的特征以及体应变-时间模型。结果表明:轴向应变和环向应变呈现各向异性的特征,轴向应变较环向应变快;型煤的轴向应变和环向应变存在吸附膨胀应变增大、吸附平衡、卸压解吸应变下降、解吸平衡几个阶段,而原煤的环向应变存在充气压缩应变下降、吸附膨胀应变增大、吸附平衡、卸压解吸应变下降、解吸平衡几个阶段;在相同压力条件下,型煤比原煤先达到吸附平衡的状态,且型煤和原煤的解吸速率明显比吸附速率大。为了得到更优的体应变-时间模型,对原Langmu
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