兖州煤田顶板构造特点及其稳定性

Roof Structural Features and Their Influence over Coal Roof Stability in Yanzhou Coalfield

煤层顶板断裂构造是煤层顶板稳定性影响因素中最重要的因素,以兖州煤田鲍店煤矿为例,分析了兖州煤田顶板断裂构造特点,探讨其对煤层顶板稳定性影响,分析了小断裂对煤层顶板的稳定性影响,断裂密集区的煤层顶板最易垮落,特别是交错断裂区更易产生顶板垮落式冒顶。

Coal roof faulted structure is most important factor to influence coal roof stability.To take Baodian coalmine in Yanzhou coalfield as an example,analyzed roof faulted structural features and their(especially minor faults) influence over coal roof stability.Have found that coal seam roof in faulted structure concentrated zone is easy to caving,especially in intersecting fault zone fall roof caving.