Xishan Coal Electricity (Group) Co., Ltd.
Xishan Branch of Shanxi Coking Coal Energy Group Co., Ltd.
CCTEG Chongqing Research Institute

为了构建马兰矿18501工作面高精度三维地质模型,采用多源数据融合与三维地学属性建模方法,首先将已有工作面地质资料数字化,建立基础数据库;采用基于煤层底板等高线和煤层厚度的建模方式,建立初始模型;开展高分辨探测,融合地质、物探、钻孔数据、钻探信息等多源数据,控制工作面内的地质构造;通过三维地学属性建模方法,对断层进行精细建模,离散采样点数据插值、三维空间网格化,实现工作面地质构造的三维重现。通过研究及应用表明:基于煤层底板等高线和煤层厚度的建模方式能够准确表达工作面煤层的起伏形态,误差精度控制在±0.25m;根据槽波能量衰减系数大于6.2、多频电磁波相对衰减系数大于0.33来有效控制工作面内落差大于1m的断层与长轴大于10m的陷落柱;融合不同来源、不同属性、不同物探方法、不同尺度数据,实现工作面内部地质构造的精细刻画,构建了精度较高的18501工作面三维地质模型。

In order to construct a high precision 3D geological model of the 18501 working face in Malan Mine, a multi-source data fusion and 3D geological attribute modeling method is adopted. Firstly, the existing geological data of the working face is digitized and a basic database is established; an initial model is established using a modeling method based on contour lines of the coal seam floor and coal seam thickness; high resolution exploration is carried out, integrate geological, geophysical, drilling hole data, drilling information and other multi-source data, the geological structure within the working face is controlled; by using the method of 3D geological attribute modeling, fine modeling of faults is conducted, with discrete sampling point data interpolation and 3D spatial gridding to achieve 3D reconstruction of the geological structure in the working face. Through research and application, it is showed that the modeling method based on the contour lines of the coal seam floor and the coal seam thickness can accurately express the undulating form of the working face coal seam, with an error accuracy controlled within ± 0.25 m; according to the energy attenuation coefficient of the trough wave greater than 6.2 and the relative attenuation coefficient of the multi-frequency electromagnetic wave greater than 0.33, effectively control faults with a drop greater than 1 m and collapse columns with a major axis greater than 10 m within the working face; by integrating different sources, attributes, geophysical methods, and nominal scale data, a precise characterization of the internal geological structure of the working face is achieved, and a high precision 3D geological model of the 18501 working face is constructed.