In order to solve high difficult support problems of the mine roadway with high stress and broken surrounding rock in a deep complicated area of some mine,a similar simulation,numerical simulation and theoretical analysis method were applied to study the pre-stressed coordinated support technology.With the loose circle measured and tested, the loose and failure scope of the roof, floor and two sidewalls of the mine roadway were determined individually as 1. 92,1. 10~ 1. 40,2. 50 m.Thus the support measures with the bolt-steel mesh-anchor were provided for the mine roadway with high stress and broken surrounding rocks in the deep complicated area of the mine. The pre-stressed coordinated support technology was selected.The pre-stress of the anchor and bolt selected were 100 and 40 kN individually.The row distance of the bolt comprehensively considered was 800-900 mm.The deformation observation of the mine roadway was conducted.The results showed that the two sidewall deformation value of the mine roadway with the pre-stressed coordinated support technology was reduced from 280. 0 mm of the conventional support to 95. 5 mm, the roof deformation value was reduced from 47. 0 mm to 43. 2 mm and the mine roadway was steadily in stable.%为解决深部复杂区域高应力破碎围岩巷道支护难度大的问题,采用相似模拟、数值模拟和理论分析的方法对预应力协同支护技术进行研究,通过松动圈测试确定巷道顶、底板及两帮的松动破坏范围分别为1.92、1.10～1.40、2.50m.据此提出了深部复杂区域高应力破碎围岩巷道采用锚网索的支护措施,选用预应力协同支护技术,确定选取锚索和锚杆预应力分别为100、40 kN,综合考虑取锚杆间排距为800～900 mm,并进行了巷道变形量观测.结果表明:采用预应力协同支护技术巷道两帮变形量由普通支护的280.0 mm减少为95.5 mm,顶板变形量由47.0 mm减少到43.2 mm,且巷道逐渐趋于稳定.
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