关键词: 煤巷, 锚网支护, 反分析方法, 安全警戒值, 安全评价系统

Abstract: To solve some problems of bolting-wire mesh support system in the coal roadway, we have put forward a set of evaluation theories and methods of “monitoring data - inverse analysis method - security alert value - predictive analysis - evaluation system”. That is, using initial fuzzy system to classify surrounding rocks of coal roadway supported by bolting-wire mesh, then using inverse analysis method to obtain mechanical parameters of roadway surrounding rock mass. And then with the numerical analysis method and theoretical calculation, the roadway roof abscission layer, convergence deformation, the numerical and analytic solution of anchor has been obtained. Consequently, security alert value is determined. Based on monitoring data, the nonlinear fitting technology is used to forecast and analysis supporting structure deformations and stability parameters of coal roadway. Finally, on the basis of VB programming language, a system of coal roadway surrounding rock classification, security alert value, monitoring data prediction and safety evaluation is set, and a safety evaluation system of coal roadway supported by bolting-wire mesh is constructed, which can realize real-time master sup- porting structure deformations and stability parameters of coal roadways. It is very helpful to increase information construction and management level of coal roadways with bolting-wire mesh support.

Key words: coal roadway, bolting-wire mesh support, inverse analysis method, security alert value, safety evaluation system