可拓工程方法在地下工程岩爆预测中的应用

在系统分析了影响岩爆发生的相关因素的基础上,结合地下工程实际,采用可拓综合评判方法,针对性地选取了3个评价指标,应用物元概念和关联函数,建立了岩爆预测的物元模型,对岩爆的发生与否及其烈度进行预测.结合国内外一些典型岩石地下工程实例进行分析计算,通过实际预测分析对比表明,该模型评价结果可靠,精度较高,具有较好的适用性,表明该模型在岩爆预测中有着良好的应用前景.

Application of extension method to prediction of rockburst of underground engineering

The problem o f rock mechanics at great depth is closely related to the nat ional property and people's life safety. How ev er , it is v ery dif ficult for researchers and engineers to analyze and deal w ith rockburst s due to it s ext reme complexity. In China, mor e and mo re underg round coal and metal mines hav e been developed into a deep lev el . With the increase of mining depth, eng ineering catast rophes such as rockburst are get t ing mo re serious and frequent . With mor e and more lo ng-large-deep tunnels appearing , fast const ruct ion and the forecast ing and contr olling for the disasters caused by surrounding rockmass such as ro ckburst has become the major task for tunnel co nstr uctio n. But researches o n the failure mechanism of surro unding rock ar e st ill not very fruit ful, and the curr ent study most ly focuses on the st ress co ndition and failur e cr iterion. The factors af fecting rockburst and the character of the underg round engineering w er e analyzed, the mat ter-element model forecast ing rockburst put forw end and evaluated based on the pr act ical situat ion. A series of underg round rockmass project s aro und the w or ld w ere evaluated w ith the pr opo sed method. The result s conform to reality v ery w ell, w hich shows that the method has vast pr ospect in predict ing r ockburst .