一种展示盆地地层构造的地质体建模方法

针对地质体建模中的地层-构造恢复与数据更新问题,提出了一种适合重现地下地层-构造格架的方法,并给出了相应的实现算法。该方法采取面向对象的数据体设计思想,结合目前比较流行的面剖分和体元剖分的优点,屏弃了面剖分和体剖分中烦琐而粗糙的逻辑存储方式,从而克服了各自的缺点。通过设计数据库和一系列的点、线、面、区块,将空间数据和属性数据方便而快捷地存储和表示,快速实时地生成地下地质体的各种几何元素,并很好地得到与保存它们之间的空间关系和拓扑结构。,通过借鉴“分而治之”的思想,采取区块分割的思路,将工作区分成一系列井然有序的区块对象。当有新的数据到来的时候,更新数据库,生成一系列新的点、面等对象,进而搜索受到新数据影响的区块对象,只对那些受到影响的区块对象进行处理,这样就避免了对整个工作区全部重新建模,实现数据和模型的快速更新。通过实验数据的验证,该方法很大程度上提高了建模效率,并能实现数据的自更新,节省了大量手工工作。

A method for Geological Model Construction to Show Stratum-structure in Basin

To show stratum-structure in basin,a new kind of method is presented and an algorithm is provided to realize the method,which is based on some recent advancement in theory research.In the method,by the way of object-oriented designing,both the advantage of face-simulation and the advantage of vector-simulation are combined to overcome the shortcoming of the two methods.By the designing of data base and a series of objects including points, lines,triangles,faces and areas,spatial data and attribute data are saved and shown quickly and handfully,thus making all kinds of parts belonging to a subsurface geological stratum-structure,and getting their spatial and topo relationships.By the thinking way of "dividing and dealing",a working area is divided into several small area objects.When new data come,only those small areas which are infected are dealt with,thus avoiding the work of reconstruct all the working area model and realizing the renewal of data.In lab data test it has proved to improve simulation efficiency and update data automatically,avoiding much manual work.