| 摘要 |
The invention relates to a modular technology for underground excavation timbering, which provides for the introduction of a modular-type system, obtained by associating the current classic metallic timbering, as a base construction, with the process of reinforcement by rock anchorage, the purpose of which is to give the reinforced rocks the role of partially taking over the mining pressure. According to the invention, in order to reduce the high consumption of metal used for supporting mining roadways, the technology provides for the mounting of some metallic sets (1) at upper bays, while providing the targeted bearing capacity by their association with the anchorage timbering having the role of reinforcing and taking advantage of the rock bearing capacity itself, the metallic sets (1) being supported on some barrings (2) made of round wood placed on the excavation floor, their longitudinal stability requiring the mounting of some metallic clamping elements (3) by means of the same type of flange used for joining the timbering elements, the modular-type supporting construction providing a wire mesh (4) to be mounted for wrapping purposes, which may be of continuous type or made of welded panels, the mesh (4) being fixed onto the rock by means of some anchors (5) with reinforcing role, the mounting of which consists in introducing and fixing, by friction or with a junction binder, the metallic rods into the mine shafts, this support type providing the optimal stability and exploitation of the underground excavations during much longer periods of time, in the conditions of reducing consumption of materials and work force, as well as the costs for the timbering carrying out, including the reduction of the supplementary maintenance costs. |
