A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of coal mine fillers, and particularly discloses a waste coal mine filler based on fly ash. The filler comprises, by mass, 30%-40% of fly ash, 20%-40% of cement, 10%-20% of sand, 5%-10% of pebbles, 10%-15% of lime, 0.5-1.5 kg/m<3> of hybrid fibers and 3.5%-15% of an inorganic additive. The hybrid fibers are two or more of steel fibers, glass fibers, carbon fibers or basalt fibers, and the lengths of different fibers are different. The filler has high corrosion resistance and strength, can bear high stress generated by surrounding rock deformation, is high in fire resistance, and can meet the grouting requirements of underground coal mine roadways.
本发明涉及煤矿填充料技术领域，具体公开了一种基于粉煤灰的废弃煤矿填充料，煤矿填充料按质量百分比计，包括30％‑40％的粉煤灰、20％‑40％的水泥、10％‑20％的沙子、5％‑10％的石子、10％‑15％的石灰、0.5～1.5kg/m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。
The invention relates to the technical field of coal mine fillers, and particularly discloses a waste coal mine filler based on fly ash. The filler comprises, by mass, 30%-40% of fly ash, 20%-40% of cement, 10%-20% of sand, 5%-10% of pebbles, 10%-15% of lime, 0.5-1.5 kg/m<3> of hybrid fibers and 3.5%-15% of an inorganic additive. The hybrid fibers are two or more of steel fibers, glass fibers, carbon fibers or basalt fibers, and the lengths of different fibers are different. The filler has high corrosion resistance and strength, can bear high stress generated by surrounding rock deformation, is high in fire resistance, and can meet the grouting requirements of underground coal mine roadways.
本发明涉及煤矿填充料技术领域，具体公开了一种基于粉煤灰的废弃煤矿填充料，煤矿填充料按质量百分比计，包括30％‑40％的粉煤灰、20％‑40％的水泥、10％‑20％的沙子、5％‑10％的石子、10％‑15％的石灰、0.5～1.5kg/m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 fly ash
一种基于粉煤灰的废弃煤矿填充料
2020-08-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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