绿色环保快速薄喷技术在煤矿巷道的应用实践

Application Practice of Green Rapid Thin Spray Technology in Coal Mine Roadway

巷道埋深大,垂直应力大,在高应力作用下,不仅岩石的力学性能,即抗压、抗拉及抗剪的能力很弱,而且节理裂隙发育,稳定性不好。巷道围岩中各种粒度的砂岩、砂质泥岩或泥质砂岩极易风化,而且围岩中的泥质成分容易吸水,使围岩变软,甚至泥化、崩解和膨胀。采用聚合物防风化砂浆对巷道进行封闭,该材料是高分子聚合物和无机材料及细骨料复合而成。产品外观为灰色。加水施工硬化后有较好的粘结性和抗伸拉性,同时有很好的成膜性,因此也具有风化防水抗渗作用。

The roadway has a large buried depth and large vertical stress. Under high stress, not only the mechanical properties of the rock, namely compressive, tensile and shear resistance, are low, but also the development of joint cracks are not good. The sandstone, sandy mudstone or shaly sandstone of various sizes in the roadway surrounding rocks is easily weathered, and muddy components in the surrounding rocks are easily absorbed, making the surrounding rocks soft, even muddy, disintegrating and expanding. The roadway is sealed with a polymer weatherproof mortar. The material is a composite of high polymer, inorganic material and fine aggregate. The appearance of the product is gray. After the water is hardened, it has good adhesion and stretchability, and it has good film forming properties. Therefore, it also has weathering, waterproof and impervious effects.