Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multifunctional filling material for coal mine goaf and preparation method of multifunctional filling material
The invention discloses a multifunctional filling material for a coal mine goaf and a preparation method of the multifunctional filling material. The multifunctional filling material is prepared from the following components in percentage by weight: 53 to 55 percent of slag, 30 to 32 percent of fly ash, 8 to 10 percent of cement, 1.5 to 2.5 percent of styrene-acrylic emulsion, 1 to 2 percent of chloride-free early strength agent, 0.9 to 1.1 percent of silicate expanding agent, 0.6 to 1 percent of polycarboxylate superplasticizer and 0.4 to 0.6 percent of lithium carbonate coagulant. The material has the advantages that (1) the compressive strength of the material is better, and the settlement risk of a goaf can be effectively reduced; (2) the material has low permeability after being solidified, and leakage of poisonous and harmful gas is reduced to a certain extent; (3) the silicate expanding agent in the material has a certain inhibition effect on the residual coal, so that the risk of spontaneous combustion of the residual coal is reduced; and (4) the material has good fluidity, good grouting efficiency can be ensured, and the conveying cost is reduced.
本发明公开了一种煤矿采空区多功能充填材料及其制备方法，由以下组分及重量百分比组成：矿渣53％‑55％、粉煤灰30％‑32％、水泥8％‑10％、苯丙乳液1.5％‑2.5％、无氯式早强剂1％‑2％、硅酸盐膨胀剂0.9％‑1.1％、聚羧酸减水剂0.6％‑1％、碳酸锂促凝剂0.4％‑0.6％。材料的优势在于：(1)材料的抗压强度较好，能有效降低采空区沉降危险；(2)材料凝固后有较低的渗透率，一定程度上减少了有毒有害气体泄露。(3)材料中的硅酸盐膨胀剂对遗煤具有一定的阻化效果，降低了遗煤自燃的风险；(4)材料具有较好的流动性，能够保证良好的注浆效率，降低输送成本。
Multifunctional filling material for coal mine goaf and preparation method of multifunctional filling material
The invention discloses a multifunctional filling material for a coal mine goaf and a preparation method of the multifunctional filling material. The multifunctional filling material is prepared from the following components in percentage by weight: 53 to 55 percent of slag, 30 to 32 percent of fly ash, 8 to 10 percent of cement, 1.5 to 2.5 percent of styrene-acrylic emulsion, 1 to 2 percent of chloride-free early strength agent, 0.9 to 1.1 percent of silicate expanding agent, 0.6 to 1 percent of polycarboxylate superplasticizer and 0.4 to 0.6 percent of lithium carbonate coagulant. The material has the advantages that (1) the compressive strength of the material is better, and the settlement risk of a goaf can be effectively reduced; (2) the material has low permeability after being solidified, and leakage of poisonous and harmful gas is reduced to a certain extent; (3) the silicate expanding agent in the material has a certain inhibition effect on the residual coal, so that the risk of spontaneous combustion of the residual coal is reduced; and (4) the material has good fluidity, good grouting efficiency can be ensured, and the conveying cost is reduced.
本发明公开了一种煤矿采空区多功能充填材料及其制备方法，由以下组分及重量百分比组成：矿渣53％‑55％、粉煤灰30％‑32％、水泥8％‑10％、苯丙乳液1.5％‑2.5％、无氯式早强剂1％‑2％、硅酸盐膨胀剂0.9％‑1.1％、聚羧酸减水剂0.6％‑1％、碳酸锂促凝剂0.4％‑0.6％。材料的优势在于：(1)材料的抗压强度较好，能有效降低采空区沉降危险；(2)材料凝固后有较低的渗透率，一定程度上减少了有毒有害气体泄露。(3)材料中的硅酸盐膨胀剂对遗煤具有一定的阻化效果，降低了遗煤自燃的风险；(4)材料具有较好的流动性，能够保证良好的注浆效率，降低输送成本。
Multifunctional filling material for coal mine goaf and preparation method of multifunctional filling material
一种煤矿采空区多功能充填材料及其制备方法
ZHANG JIAYONG (Autor:in) / CUI XIAO (Autor:in) / LIU ZIYU (Autor:in) / ZHANG CHENG (Autor:in) / LI KEXIN (Autor:in) / WANG KAI (Autor:in) / GUO LIWEN (Autor:in) / WU JIANGUO (Autor:in) / GUAN LIANHE (Autor:in) / LYU ZUXIN (Autor:in)
22.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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