兖州矿区巨厚松散层下煤层开采上限研究初步成果

在分析以往资源勘探资料及矿井生产积累的大量水文地质、工程地质资料的基础上，采用数理统计、模糊评判、灰色分析、有限元等新技术与手段，对兖州矿区煤层可开采的上限进行了定量研究。并建议在由中深部到浅步逐步疏干的前提下，从宏观上只留防砂煤柱３０ｍ（原８０ｍ），因而可解放露头压煤２．９２亿ｔ，约占总储量的７．６％。

INITIAL RESULTS OF A STUDY ON UP -DIP LIMIT OF COAL SEAMS UNDER THE MEGA FRIABLE OVERBURDEN IN YANZHOU MINING AREA

On the basis of analyses of a vast amount of hydrogeologic,en-gineering geologic data collected from previous resource exploration and mining,the authorsused mathematical statistics,fuzzy judgement,grey analysis,finite-element simulationtechniques to the quantitative study on up-dip limit of coal seams in the Yanzhou miningarea. And they recommended that on the prerequisite of draining in advance from medi-umdeep to shallow progressively,retaining barrier coal pillar only 30m approximatelly in-stead of 80m in before,thus 292 million tons of coal formerly retained for barrier pillar canbe worked out,that nearly amount to 7.6%of the total reserve.