超前锚杆预支护机理的模拟试验与成拱力学模型研究

Experimental Research on the Pre-reinforecment Mechanism of Forepoting Bolt and Its Arching Mechanical Model

在某类软弱、破碎岩层条件下，通过岩性模拟试验和超前锚杆预支护结构整体模拟试验研究，对超前锚杆预支护结构的支护机理进行了分析和解释，并建立了超前锚杆预支护成拱力学模型，对超前锚杆轴向平面上部碎块体应力场及垂直于超前锚杆横断面内成拱进行了试解答。

Based on the simulated tests of rock mechanical properties and forepoling folt structure,this paper analyses and expounds its pre-reinforcement mechanism under conditions oflocse and forken strata.Aarch model for the forepoling is established and solved.In addi-tion,the authors inuestigatc the stress field for broken rocks aboue forepoling folts.