Abstract: The development platform of simulate ground fissures was built by applying VR-GIS in the western region of Wuxi, Jiangsu Province. On the base of digital elevation modeling, combining with the distribution feature of ground fissures and the texture collected from field, the authors adopted geometrical algorithm and texture mapping technique to simulate the ground fissures and building fissures, respectively. Then in small scale, the ground fracture and its affection on building is vividly simulated. At the same time contracting the fissured building with the discrepancies in the forms of bedrock and the accumulative land displacement, researchers can learn factors which induce ground fracture. The authors utilized Visual C++ as an interface development tool and OpenGL(open graphics library) as a graphic tool. All the work is a primary study aiming at supply an interactive platform for researchers to learn the ground fissures by a vivid style.

Key words: ground fissures, VR-GIS, the western region of Wuxi area