【摘要】 本文根据微山湖下8101面覆岩移动和破坏观测,分析了其“两带”发育的特征,就冒高偏大的原因进行了探讨,揭示了此种覆岩条件下岩层移动的某些规律;并指出这种“两带”特征对湖下采煤是有利的。更多还原

【Abstract】 In this paper the special features of "Two zones"over the No. 8101 under the wei shang lake are unalysed, according to the observations of overly ing strata movement and failure The author investigated the neasons of tne caving height which is guite higher than normat,and revealed some laws of rock strata move ment in such overlying strata and pointed out that the special features of the"Two zones"is benifitial to the coal mining under lakes更多还原