1) coal petrology characteristic
煤岩特征
1.
From coal petrology characteristics,screening,float-and-sink analysis,coal and gangue degradation in water testing,studied the coal washability characteristics in the mine area and each minefield.
从煤岩特征,煤的筛分、浮沉、煤及矸石的泥化程度试验等方面,对矿区及各井田煤的可选性特征进行了研究,研究表明:清水营井田煤中粘土类矿物较多,可选性较差,其它井田可选性相对较好;矿区煤中粘土矿物多呈细胞充填状,惰质组含量较高,难选出灰分很低的煤;当浮煤灰分控制在6。
2) ingredient layer characteristic
煤岩层特征
1.
The paper gave an outline of Xieqiao coal mining geology and hydro-geological conditions;It introduced the general situation of 1#and 2# cave-in post,introduced ingredient layer characteristic of 13118 working face lower back entry west segment exposed 2#cave-in post and influence zone with an emphasis.
本文简单介绍了谢桥煤矿地质、水文地质条件;介绍了1#、2#陷落柱的概况;重点介绍了13118工作面下顺槽西段揭露的2#陷落柱及其影响带的煤岩层特征;说明了2#陷落柱具有整体塌陷、柱体内部裂隙发育、裂隙较宽和联通性较好等、在煤层中柱体边界清晰、陷落柱影响带较宽等特征;初步分析了陷落柱发育的时间、原因。
3) contrast method of coal strata combination characteristics
煤岩层组合特征对比法
4) petrographical compositions
煤岩特性
6) coal quality character
煤质特征
1.
The coal quality characters and reasonable utilization route of Yanzhou mining area were analyzed and discussed.
介绍兖州矿区煤系、煤层及矿区生产建设情况，着重论述了矿区煤质特征，分析了矿区煤的合理利用途径。
补充资料：半煤岩巷掘进
见煤巷掘进。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条