Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Waste coal mine filler based on coal gangue
The invention relates to the technical field of coal mine fillers, and particularly discloses a waste coal mine filler based on coal gangue. The filler comprises the following components in percentage by mass: 30%-40% of coal gangue, 20%-40% of cement, 10%-20% of sand, 5%-10% of fly ash, 10%-15% of lime, 0.5-1.5 kg/m < 3 > hybrid fibers and 3.5%-15% of an inorganic additive; the hybrid fibers are two or more selected from steel fibers, glass fibers, carbon fibers or basalt fibers; and the lengths of different fibers are different. The filler has high corrosion resistance, the strength can bear high stress generated by surrounding rock deformation, meanwhile, the fire resistance is high, and the grouting requirement of an underground coal mine roadway can be met.
本发明涉及煤矿填充料技术领域，具体公开了一种基于煤矸石的废弃煤矿填充料，按质量百分比计，包括30％‑40％的煤矸石、20％‑40％的水泥、10％‑20％的砂子、5％‑10％的粉煤灰、10％‑15％的石灰、0.5～1.5kg/m3的混杂纤维和3.5％‑15％的无机添加剂，所述混杂纤维为钢纤维、玻璃纤维、碳纤维或玄武岩纤维中的两种及以上，不同纤维的长度不同。本专利中的填充料具有较高耐腐蚀性，强度能够承受因围岩变形产生的高应力，同时耐火能力强，能够满足地下煤矿巷道的注浆要求。
Waste coal mine filler based on coal gangue
The invention relates to the technical field of coal mine fillers, and particularly discloses a waste coal mine filler based on coal gangue. The filler comprises the following components in percentage by mass: 30%-40% of coal gangue, 20%-40% of cement, 10%-20% of sand, 5%-10% of fly ash, 10%-15% of lime, 0.5-1.5 kg/m < 3 > hybrid fibers and 3.5%-15% of an inorganic additive; the hybrid fibers are two or more selected from steel fibers, glass fibers, carbon fibers or basalt fibers; and the lengths of different fibers are different. The filler has high corrosion resistance, the strength can bear high stress generated by surrounding rock deformation, meanwhile, the fire resistance is high, and the grouting requirement of an underground coal mine roadway can be met.
本发明涉及煤矿填充料技术领域，具体公开了一种基于煤矸石的废弃煤矿填充料，按质量百分比计，包括30％‑40％的煤矸石、20％‑40％的水泥、10％‑20％的砂子、5％‑10％的粉煤灰、10％‑15％的石灰、0.5～1.5kg/m3的混杂纤维和3.5％‑15％的无机添加剂，所述混杂纤维为钢纤维、玻璃纤维、碳纤维或玄武岩纤维中的两种及以上，不同纤维的长度不同。本专利中的填充料具有较高耐腐蚀性，强度能够承受因围岩变形产生的高应力，同时耐火能力强，能够满足地下煤矿巷道的注浆要求。
Waste coal mine filler based on coal gangue
一种基于煤矸石的废弃煤矿填充料
04.06.2021
Patent
Elektronische Ressource
Chinesisch
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