Expansion pressure-bearing material

The invention relates to the field of coal seam grouting and hole sealing, in particular to an expansion pressure-bearing material which comprises the following raw materials in percentage by mass: 48-55% of cement, 8-10% of fly ash, 8-9% of calcium sulfate, 18-20% of calcium carbonate, 8-9% of sili...

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Bibliographische Detailangaben
Hauptverfasser:	XU BIN, LI XIANGWANG, ZHANG JINGSONG, ZHANG JUNPING, LI SHOURUI, TAO DONG, WANG GUANGHONG, OU CONG, SUN DONGLING, WANG ZHIHUI, WANG CHANGMING, CHEN LIANG, WANG ZHENGSHUAI, ZHAO HUAJUN, LIU YANBAO, HUANG XUCHAO, XU HONGLEI, WANG JIANJUN, LUO JING, ZHAO KUN, HUANG SENLIN, CHENG CHUANJIAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS LIME, MAGNESIA METALLURGY MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS REFRACTORIES SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The invention relates to the field of coal seam grouting and hole sealing, in particular to an expansion pressure-bearing material which comprises the following raw materials in percentage by mass: 48-55% of cement, 8-10% of fly ash, 8-9% of calcium sulfate, 18-20% of calcium carbonate, 8-9% of silicon dioxide, 0.2-0.3% of methyl cellulose, 0.8-1.8% of an anti-cracking agent, 1-2% of a water reducing agent, 0.8-1% of iron powder, 0.8-1% of aluminum powder and 0.2-0.4% of oxalic acid. When the technical scheme is adopted, the hole sealing effect can be improved. 本发明涉及煤层注浆封孔领域，具体涉及膨胀承压材料，原料按质量百分比包括以下组分：水泥48～55％、粉煤灰8～10％、硫酸钙8～9％、碳酸钙18～20％、二氧化硅8～9％、甲基纤维素0.2～0.3％、抗裂剂0.8～1.8％、减水剂1～2％、铁粉0.8～1％、铝粉0.8～1％、草酸0.2～0.4％。采用本技术方案时，有利于提高封孔效果。