针对断层等因素破坏了地层连续性形成的地层错断而造成钻孔控制数据缺失情况,以及现有地层错断处三维建模方法的不足,基于广义三棱柱(GTP)提出一种新的处理方法--局部虚拟建模钻孔法(LVMB).该方法主要分为3步进行:①确定需要在之间插入LVMB的2个界限三角形;②在这2个界限三角形相应的3争边之间自动插入LVMB;③构建2个界限三角形之间的地层模型.实验表明,该方法能够相对准确地自动进行地层错断处的三维建模,扩展基于GTP体元三维地质建模的适用范围.%Scarcity in boreholes data formed by bad break, caused by faults broking the continuity of strata, and the disposing of the bad break in 3D geological mode (3DGM) at present, a new method based on generalized triprism (GTP), named as local virtual modeling borehole (LVMB) was put forward. The main steps of this method include:①To judge two limit triangle, which need insert LVMB between them; ②To insert LVMB to the corresponding two edges of up and down limit triangles automatically;③To construct the strata between the two limit triangle. The test shows that the LVMB method can create 3D model of bad break inside geological body automatically, the created model is more correct than other method at present, so the applied scope of GTP volume for 3DGM is extended.
展开▼
