The Three Gorges well network is the first professional network in China established for the purpose of monitoring the groundwater precursors of reservoir induced earthquake.

The triangular network and surface spline interpolation algorithms are proposed.

This paper proposes a geometric correction algorithm based on triangular network.

By using the characteristics of Voronoi polygon, Delaunary triangular network and near object having certain similarities, a method is proposed for classifying the clustering of spatial data by using the principle of TIN.

Method and application of triangulation in the calculation of geologic reserves;

Many kinds of triangulation systems are divided into two groupst a lineartriangulation chain and non-linear triangulation chain.

This method,first of all,Delaunay triangulation is establishment through the discrete points,then the equivalent lines are generated after interpolating high point in the triangle edge,and at last,a smooth contour will be automatically generated by using a two-way link method.

The software generates the smooth curve by the method of triangle net and cubic Bspline algorithm,and is made into standard style of ActiveX Control which is programmed by VC++,so it can be used in various operati ng platforms.

In order to use data collected in the fieed air directly to create DEM and reflect ground surface characteristic,disperse point data is regarded as the data source,and triangle net-growth algorithm is chosen to establish Delaunay triangle net.