The loading affection on supports in process of transformation. the roof coal behaviour on the face zone and its caving character at cavity edge are expounded.
论述了顶煤介质状态转化对工作面支架的作用,不同强度顶煤在工作面控顶区上方的性态分布和放顶煤线处的垮落特点;
According to study on changing law of elements and geochemical actions in a fault zone, evidence to determine character of the fault movement might be gotten.
根据断裂带内的元素和地球化学作用变化规律的研究,就可能测定断裂运动的特征。
The sealing character of abnormally high pressure zone and origin and migration of oil and gas are closely related.
异常高压带的封闭特性对油气的生成与运移有密切关系。
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