Underground Mine Shaft Engineering Computer-aided Design System Is Developed

This paper summarized the actuality of CAD and ANN applying in mining in China. According to the deficiency and problems, the author has developed a underground mine laneway plane & cross-section design program based on VB and LISP, and successfully applied BP network in the design of undermine laneway supporting, which has a leading significance.The laneway is the artery of a whole underground mine, and play the most important role in production. Since scale-production, many design work has been done about laneway construction in our country. The conventional method of design is protract or lay all kinds of excavating work with handwork on chart which has already circle out the mine boundary, the efficiency and modification of which is very hard. Computer appling in mining has in some way improved this case, especially the AutoCAD software of AutoDesk inc has greatly improved the working efficiency of mine. But all these are in a hand step control stage ,let alone their auto-level is , so the author specially developed a LISP program with the Auto LISP software to protract laneway automatically, which may be integrated in a mine menu. In addition the author also developed the laneway cross-section drawing program based on VB and LISP, which comprise cross-section shape select, cross-section dimension design, transporting laneway pipe-cable and railway layout, etc. The cross-section chart may be draw and export automatically in AutoCAD. The system greatly introduced the principle of software engineering and the optimizing ideology of CAD, as has greatly improved laneway design efficiency.For the moment, the laneway support theory is not very mature, so in practice we still employ the methods of analogy based on wall rock classification, theoretical analytical method, locale inspect and control and special geological parse. Since the year of 1996, use the experience of U.K and Australia for reference, the bole-support method based on ground-stress testing has been primarily applied. AI tech applying in mine begins in 80s and some study fruit gained in recent years but not come down to BP network. The laneway characterand support methods & support parameters are a relation of non-linearity, so we can resolve the problem of laneway support design with BP network. In the paper, using the not-linearity of BP network, the author created a BP model for drift, raise, and ramp or excavations spray-bolt-mesh combining support. About 100 successful supporting examples are employed to network training and modify. About 30 examples are employed to check the network, and the result coherent to practice. The work of training and check is done in MATLAB, and the network parameters are exported to VB for net-simulate. The program are easy to use which made the design of laneway support automatic, and the parameters of support are no longer affect by mdividual factors, as improved scientific level of design and economy efficiency of mine. The key of this part of work lies in net structure optimizing and the import parameters classification, all of these are detailed in this paper.