A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Solid waste-based mine filling material and filling body
The invention provides a solid waste-based mine filling material, which comprises 20-50 parts by weight of desulfurized building gypsum, 15-35 parts by weight of cement, 0-30 parts by weight of fly ash, 0-5 parts by weight of an early strength agent, 5-10 parts by weight of gasified slag and 10-50 parts by weight of coal gangue particles, and the desulfurized building gypsum comprises 60-90% by weight of beta-hemihydrate gypsum, 0-15% by weight of III-type anhydrous gypsum and 0-25% by weight of dihydrate gypsum. The invention further provides a filling body for mine backfilling and a mine backfilling method. The solid waste-based mine filling material provided by the invention is high in solid waste utilization rate, low in cost, capable of obtaining excellent solidification performance and mechanical performance, high in solidification speed, capable of keeping high compressive strength in the early stage and the later stage, and good in strength durability, so that the solid waste-based mine filling material can be widely applied as a novel, high-strength and rapid-solidification filling material.
本发明提供了一种固体废弃物基矿井充填材料，其包括20～50份脱硫建筑石膏、15～35份水泥、0～30份粉煤灰、0～5份早强剂、5～10份气化渣以及10～50份煤矸石颗粒，其中，按重量百分比计，脱硫建筑石膏中包含60～90％的β‑半水石膏、0～15％的III型无水石膏以及0～25％的二水石膏。本发明还提供了一种用于矿井回填的充填体以及一种矿井回填方法。本发明提供的固体废弃物基矿井充填材料固废利用率高，成本低，并且能够取得优异的凝固性能和力学性能，凝结速度快，早期和后期均能够保持高抗压强度，强度耐久性好，因而可以作为一种新型的、高强速凝的充填材料而被广泛应用。
Solid waste-based mine filling material and filling body
The invention provides a solid waste-based mine filling material, which comprises 20-50 parts by weight of desulfurized building gypsum, 15-35 parts by weight of cement, 0-30 parts by weight of fly ash, 0-5 parts by weight of an early strength agent, 5-10 parts by weight of gasified slag and 10-50 parts by weight of coal gangue particles, and the desulfurized building gypsum comprises 60-90% by weight of beta-hemihydrate gypsum, 0-15% by weight of III-type anhydrous gypsum and 0-25% by weight of dihydrate gypsum. The invention further provides a filling body for mine backfilling and a mine backfilling method. The solid waste-based mine filling material provided by the invention is high in solid waste utilization rate, low in cost, capable of obtaining excellent solidification performance and mechanical performance, high in solidification speed, capable of keeping high compressive strength in the early stage and the later stage, and good in strength durability, so that the solid waste-based mine filling material can be widely applied as a novel, high-strength and rapid-solidification filling material.
本发明提供了一种固体废弃物基矿井充填材料，其包括20～50份脱硫建筑石膏、15～35份水泥、0～30份粉煤灰、0～5份早强剂、5～10份气化渣以及10～50份煤矸石颗粒，其中，按重量百分比计，脱硫建筑石膏中包含60～90％的β‑半水石膏、0～15％的III型无水石膏以及0～25％的二水石膏。本发明还提供了一种用于矿井回填的充填体以及一种矿井回填方法。本发明提供的固体废弃物基矿井充填材料固废利用率高，成本低，并且能够取得优异的凝固性能和力学性能，凝结速度快，早期和后期均能够保持高抗压强度，强度耐久性好，因而可以作为一种新型的、高强速凝的充填材料而被广泛应用。
Solid waste-based mine filling material and filling body
一种固体废弃物基矿井充填材料以及充填体
WANG XIA (author) / ZUO RANFANG (author) / ZHANG DONG (author) / DONG YANG (author) / LIANG WENBIN (author) / GONG SIYU (author)
2023-10-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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