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在巷道开拓过程中,由于岩石内部应力平衡受到破坏,巷道很容易产生变形、冒顶、甚至塌毁等现象。为了保证工作安全和生产的正常进行,就必须用支架把巷道及时地支护起来。一般说来,支架材料有长材,金属型材,混凝土以及砖、石材料等;支护方法通常是棚架型式。这种棚架支护型式普遍存在着需要投入大量的支护材料,成少巷道断面积,妨碍运输和掘进工作的进厅等缺点,尤其是我国森林资源有限,木质支架在潮湿环境下易于腐朽,服务年限较短,因此研究采用新的支护材料和支护型式是十分必要
In the process of roadway development, due to the destruction of the stress balance within the rock, the roadway is prone to deformation, roof collapse and even collapse. In order to ensure the safety of work and the normal production, it is necessary to support the roadway in time with brackets. In general, the scaffolding materials are long products, metal profiles, concrete and brick, stone materials, etc .; support method is usually scaffolding type. This type of shelving generally has the shortcomings of requiring a large amount of supporting materials, reducing the cross-sectional area of the roadway and impeding the transportation and excavation work. In particular, the forest resources in our country are limited, and the wooden brackets are easily decayed under humid environment , The service life is short, so it is very necessary to study the new type of support material and support