麻地沟矿井田开拓方案的可行性分析

介绍了地质构造、煤层赋存条件及开采技术条件对井田开拓的影响,阐述了井口及工业场地位置的选择,对拟定的两个井田开拓方案进行了对比分析。     

基于GCRN的矿岩可爆性分级模型及其应用

为了准确反映岩体可爆性等级,构建了由弹性波阻抗、坚固性系数、平均裂隙距和标准爆破漏斗炸药单耗4个因素组成的评价体系,采用改进的灰色关联分析法对传统的岩体可爆性等级划分标准进行优化。利用灰色关联相对贴近度(GCRN)来反映各可爆性等级之间的差别,确定各可爆性等级对应的灰色关联相对贴近度区间,以此划分新的岩体可爆性等级。采用基于GCRN的矿岩可爆性分级模型对武钢资源集团公司程潮矿业有限公司东、西区矿体的可爆性级别进行评价,评价结果与实际情况基本一致,表明利用灰色关联相对贴近度来划分矿岩可爆性等级的方法是可行的。     

Mechanisms of aliphatic hydrocarbon formation during co-pyrolysis of coal and cotton stalk

Pyrolysis experiments were carried out in a tubular furnace. The characteristics of pyrolysis tar were analyzed by GC/MS. The results indicated that the aliphatic hydrocarbon yield derived from co-pyrolysis tar of cotton stalk and Shenmu coal was obviously higher than that of Shenmu coal pyrolysis under optimum condition. Moreover, microcrystalline cellulose was selected as a model compound and the copyrolysis tar of microcrystalline cellulose and Shenmu coal was analyzed for comparison. Base on the experimental results, it was indicated that the alkyl radicals generated from pyrolysis were converted to aliphatic hydrocarbons by radical reactions. Furthermore, the mechanisms of aliphatic hydrocarbon formation were discussed during co-pyrolysis of cotton stalk and Shenmu coal.     

The investigation of chemical structure of coal macerals via transmitted-light FT-IR microscopy by X. Sun

A recent paper by Sun [X. Sun, Spectrochim. Acta A 62 (1-3) (2005) 557] attempts to characterize a variety of liptinite, termed "barkinite", from Chinese Permian coals. The component identified does not appear to fundamentally differ from previously-described liptinite macerals included in the International Committee for Coal and Organic Petrology's system of maceral nomenclature. Further, chemical comparisons made with macerals from coals of different rank and age are flawed because the author did not account for changes in chemistry with rank or for the chemical changes associated with botanical changes through geologic time. The author has not satisfactorily proved his hypothesis that the component differs morphologically or chemically from known liptinite-group macerals.     

土哈盆地西山窑八道湾煤层井壁不稳定机理探讨

本文分析丁吐哈盆地西山窑、八进湾煤层井下复杂情况及其原因.着重探讨了煤层井壁不稳定机理,结果表明,煤层井壁不稳定是物理、化学、力学与机械等因素的综合效应。     

苯基荧光酮分光光度法测定煤矸石中钛

本文研究和比较了几种表面活性剂存在下,苯基荧光酮（ＰＦ）与钛的显色反应。试验表明,在０．０３－０．０５ｍｏｌ·Ｌ－１的硫酸介质中,钛与ＰＦ形成蓝紫色配合物,最大吸收峰在５９５ｎｍ处,表观摩尔吸光系数ε＝６．３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１。钛量在０－１５μｇ／２５ｍＬ范围内服从比耳定律。方法灵敏度高,选择性好,抗干扰能力强,体系稳定,测定煤矸石中钛,结果满意。     

直接酸提取电感耦合等离子体发射光谱法测定煤中主要成灰 …

本文提出了一种全新的以酸直接提取煤中的矿物元素、ＩＣＰ－ＡＥＳ测定其含量的方法。考察了最佳酸配比、酸用量、最佳提取时间、仪器最佳操作参数以及元素间的干扰等诸多因素。与其灰分含量相比,煤中矿物质的提取率在９５％以上,各元素加标回收率为９６％～１０４％,九次测定相对标准偏差小于４％。方法准确、快速、适合于不同煤样中矿物元素的分析测定。     

石油焦热解动力学参数及其补偿效应

通过对石油焦热解的热重分析,发现石油焦热解动力学参数受升温速率、热解率等实验条件影响较大,并归纳出石油焦热解的动力学补偿效应表达式ｌｎＡ＝ ａ＋ ｂＥ,从而建立石油焦热解动力学参数之间的关系     

有限半气化层燃锅炉的综合特性及节能预测

根据有限半气化燃烧的试验研究结果,讨论了有限半所化燃烧过程的主要特性,提出了层燃锅炉有限半气化燃烧节能的预测模型,并根据试验结果对模型加以检验。     

从煤炭资源压覆议焦作市城建发展方向

焦作市是一座以煤炭为基础发展起来的矿业城市,已探明的煤炭资源主要分布在太行山山前受深大断裂控制的三角形地带内。老的城区已位于煤田分布区内,新的城建发展布局向南向东扩展,恰巧与煤田等展布方向一致,这种城建布局发展方向的不合理性,又将压覆大量的煤炭资源。面对新型,高效、环保的煤炭液化,煤炭地下气化等技术日臻成熟,焦作市等城建发展布局理应调整方向,向西南方向发展,为子孙后代预留下矿业经济可持续发展的空间。