关键词: 深部开采, TECCO网, 高应力巷道, 支护, 变形监测

Abstract: The obvious characteristics of deep roadway in Jinchuan Mining Area are large in-situ stress and broken rock mass.The original bolting and shotcreting support method in mine roadway has many problems，such as large amount of surrounding rock deformation and long duration， falling off of shotcreting layer and falling of bolt anchoring force，which are difficult to ensure the safety and reliability of roadway.Based on the investigation and theoretical analysis of the deformation characteristics of the roadway in the mining area，the Bolt+TECCO （no shotcrete） support technique is introduced to solve the support problem.In this paper，the mesh supporting technique has two characteristics:①shotcrete is not used in the support process；②the high-strength metal mesh （TECCO net） which is usually used in slope protection engineering is used in combination with the actual situation based on the deformation characteristics of surrounding rock of deep roadway.The study results show that:①TECCO network with high tensile strength can make the support and surrounding rock form a close whole structure gradually after the deformation of surrounding rock， and improve the bearing capacity of surrounding rock；②the deformation rate of surrounding rock is less than 0.1 mm/d after 40 days of bolting and mesh supporting，which shows that this support method can effectively control the deformation of roadway；③bolt +TECCO net support has the feature of low cost and low operation intensity，which can plays a positive role in high efficiency and safety production of the mine.

Key words: Deep mining, TECCO net, High-stress roadway, Supporting, Deformation monitoring