【摘要】 地质构造尤其是活动断裂控制着动力现象的区域性分布,然而活动断裂与矿井动力现象的关系并不是绝对和完全的。对断裂活动性进行评价,确定断裂的动力活动强度,是进行动力现象的预测与预防的重要内容之一。文章通过分析活动断裂的特征及其对矿区原地应力场的影响,提出了既具有代表性又容易获取的适合多尺度断裂活动性评价的5个主要指标,即活动断裂两侧断块的高程差、活动断裂长度、活动断裂走向与最大主应力的夹角、活动断裂走向与最大剪应力的夹角及断裂地震综合指标。利用模糊数学方法,建立了断裂活动性评价的模糊综合评判模型,确定了隶属函数,并通过层次分析法确定了各个指标的权重,最终获得了断裂活动性的模糊综合评判结果。将该方法应用于新汶矿区协庄矿,结果显示冲击地压多发生于具有强活动性的断裂附近。表明文章建立的评判模型能够较好地对断裂活动性进行分级。文章提出的模糊综合评判方法,改进了地质动力区划中断裂活动性评价方法,提高了评价结果的准确性及合理性。更多还原

【Abstract】 Geology tectonic,especially active fault,controls the regional distribution of dynamic phenomena.However,the relationship between the active fault and the mining dynamic phenomena is not absolute.So,estimating the fault activity to decide the strength intensity is one of the important matters to forecast and prevent the dynamic phenomena.Through analyzing the characteristics of active fault and its influence to the in-situ stress field,this paper advanced five important indexes,which is typical,easily acquirable and fit to multi-scales for evaluating the fault activity.Those are the elevation difference between two faults,the length of active fault,the angle between the active fault and σ₁,the angle between the active fault and τ_max,and last the integrate index of earthquake.By using the furry mathematics this paper established the furry integrate estimating model and decided sub-functions.The power of each factor is decided with the AHP.After applying this model to the Xiezhuang Mine,the result showed that mostly the rock burst occurred around the fault,which has strong activity.So it indicated the model could grade the fault activity better.The furry integrate estimation discussed in this paper can improve the method of evaluating fault activity and the veracity and rationality of the results in geology dynamic division.更多还原