判别分析法在矿井地质构造预测中的应用

APPLICATION OF DISCRIMINATION ANALYSIS IN PREDICTION OF GEOLOGICAL STRUCTURES IN COAL MINES

叙述了用判别分析方法对矿井地质构造类型进行预测的原理、方法和步骤。以已采区两个不同构造复杂程度的区域为背景，充分利用钻孔资料提供的信息，以不同抗压强度的岩层厚度、岩性组合等为依据，将主采煤层上下７０ｍ范围内的岩层以１０ｍ为间隔划分层段，确定地质变量，建立判别函数，定量地给出了小断层存在的部位及其可靠程度，并得到了生产实践的验证。该方法突破了现有的仅用岩层底板标高研究断层的局限姓，得出了矿井构造复杂程度与岩性、岩层组合关系有关的结论，为预测矿井地质小构造开辟了新的途径。

The principles,method and procedure are described for prediction of the type of geological structures by discrimination analysis.Thickness and type combinations of rocks of different compressive strength are used as criteria.In two known areas with geological structures of different complexity,on the basis of borehole data,the rocks overlying and overlain by a main coal seam,70m in thickness are divided into several horizons at an interval of 10m;the geological variables are determined;and the discriminative functions are established;the position of small faults is predicted quantitatively.And its reliability is proved by the practical excavation.This method has improved the traditional method,by which the geological structures are predicted by the altitude of rocks.A conclusion is drawn that the complexity of mine structure is related to the rock type and combination of rock strata.It provides a new approach for prediction of geological small structures.