Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-strength and corrosion-resistant dry spraying material for coal mine roadway and construction process thereof
The invention relates to the technical field of coal mine roadway material spraying. The invention particularly discloses a high-strength corrosion-resistant dry spraying material for a coal mine roadway and a construction process thereof. The spraying material is prepared from the following raw materials in percentage by mass: 15%-30% of cement, 20%-40% of sand, 20%-30% of pebbles, 5%-10% of coalash, 10%-15% of mineral powder, 5%-10% of silica fume, 0.5-1.5 kg/m3 of hybrid fibers and 2%-20% of a cement additive. The hybrid fibers are two or more of steel fibers, glass fibers, carbon fibers or polypropylene fibers, and the lengths of the fibers are different. The spray material obtained according to the proportion in the patent can still keep better strength when being used in an acidic corrosive environment of a coal mine roadway, and can meet the requirements of high stress, large deformation of soft rock, rock burst and high-corrosivity coal mine roadway support.
本发明涉及煤矿巷道喷料技术领域，具体公开了一种煤矿巷道用高强度、耐腐蚀干喷喷料及其施工工艺，所述喷料的原料按质量百分比计，包括15％‑30％的水泥、20％‑40％的砂子、20％‑30％的石子、5％‑10％的煤灰、10％‑15％的矿粉、5％‑10％的硅灰、0.5～1.5kg/m的混杂纤维和2％‑20％的水泥添加剂，所述混杂纤维为钢纤维、玻璃纤维、碳纤维或聚丙烯纤维中的两种及以上，且各种纤维的长度不同。采用本专利中的配比得到的喷料在煤矿巷道酸性腐蚀环境下使用，依然能够保持较好的强度，能够满足高应力、软岩大变形、冲击地压及高腐蚀性煤矿巷道支护的需要。
High-strength and corrosion-resistant dry spraying material for coal mine roadway and construction process thereof
The invention relates to the technical field of coal mine roadway material spraying. The invention particularly discloses a high-strength corrosion-resistant dry spraying material for a coal mine roadway and a construction process thereof. The spraying material is prepared from the following raw materials in percentage by mass: 15%-30% of cement, 20%-40% of sand, 20%-30% of pebbles, 5%-10% of coalash, 10%-15% of mineral powder, 5%-10% of silica fume, 0.5-1.5 kg/m3 of hybrid fibers and 2%-20% of a cement additive. The hybrid fibers are two or more of steel fibers, glass fibers, carbon fibers or polypropylene fibers, and the lengths of the fibers are different. The spray material obtained according to the proportion in the patent can still keep better strength when being used in an acidic corrosive environment of a coal mine roadway, and can meet the requirements of high stress, large deformation of soft rock, rock burst and high-corrosivity coal mine roadway support.
本发明涉及煤矿巷道喷料技术领域，具体公开了一种煤矿巷道用高强度、耐腐蚀干喷喷料及其施工工艺，所述喷料的原料按质量百分比计，包括15％‑30％的水泥、20％‑40％的砂子、20％‑30％的石子、5％‑10％的煤灰、10％‑15％的矿粉、5％‑10％的硅灰、0.5～1.5kg/m的混杂纤维和2％‑20％的水泥添加剂，所述混杂纤维为钢纤维、玻璃纤维、碳纤维或聚丙烯纤维中的两种及以上，且各种纤维的长度不同。采用本专利中的配比得到的喷料在煤矿巷道酸性腐蚀环境下使用，依然能够保持较好的强度，能够满足高应力、软岩大变形、冲击地压及高腐蚀性煤矿巷道支护的需要。
High-strength and corrosion-resistant dry spraying material for coal mine roadway and construction process thereof
一种煤矿巷道用高强度、耐腐蚀干喷喷料及其施工工艺
18.08.2020
Patent
Elektronische Ressource
Chinesisch
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