一种约束实测水平巷道提高矿山地质体三维自动建模精度的算法

An Algorithm of Measured Level Workings Information Restraint Mine Geological Body 3D Automatic Modeling Accuracy Improving

矿山勘探钻孔数据无法完全反映矿下地层的复杂赋存形态,水平巷道实测信息中揭露的地质信息往往能够较好地反映层状地质结构体在局部地区空间形态与岩性属性信息。在现有的矿山三维自动建模算法中,矿山地质体模型往往与巷道模型分开建立,较少有算法有效地将采掘工程中探明的地层信息用到矿山地层模型之中,进而造成巷道揭露的地层走向与地质结构体模型无法叠合的情况。针对这个问题,提出一种基于实测水平巷道数据更新实际勘探钻孔绘制的剖面图,并辅助建立虚拟钻孔、虚拟剖面反映出巷道地质信息,利用实际钻孔、实际剖面、虚拟钻孔、虚拟剖面共同约束,进而自动构建出矿山三维地质体模型。最后,利用某矿的实际数据进行验证,说明利用实测水平巷道数据约束建立的矿山三维地质体模型更与实际地层分布情况更为接近,并能够提高矿山三维地质模型与巷道揭露地层形态与地层走向叠合精度,说明了本算法的有效性。

The mine exploration drilling data can not fully reflect underground complex strata hosting configuration. The geological information revealed by level workings measured information can usually reflect layered geological body local spatial configuration and lithologic attribute information better. In available mine 3D automatic modeling algorithms, the modeling of mine geological body model and roadway model usually is separated, less algorithms can use the strata information proved by mining engineering on mine strata model, accordingly caused roadway revealed strata strike can not be overlapped with geological structure model. In allusion to this issue, an actual exploration borehole section put forward based on measured level workings data renovation, supplemented by virtual borehole, virtual section reflected roadway geological information, using actual borehole, actual section, virtual borehole and virtual section jointly constraint, and then has automatically established a mine 3D geological body model. Finally, using actual data of a mine carried out verification, has illustrated that the mine 3D geological body model through measured level workings information restraint is more close to actual strata distribution situation and improved overlapping precession between mine 3D geological body model and roadway revealed strata configuration and strata strike, thus illustrated effectiveness of the algorithm.