煤炭科学研究总院重庆分院承担的国家“七五”攻关项目“用沸腾炉灰渣研制煤矿井下密闭充填材料”,于1990年12月27日由中国统配煤矿总公司技术发展局主持通过了技术鉴定。该材料主要由沸腾炉灰渣、水泥、硅灰及适量外加剂组成,早期具有强度高、可产生塑性变形等特性,后期完全固化,亦能达到较高的强度(1天和28天抗压强度分别为11.9MPa和23.6MPa),质轻(其干容重为1700～1800kg/m~3)。上述特点符合矿井采空区矿压周期性变化规律,故此材料既可用 Chongqing Branch of the Chinese Academy of Sciences to undertake the national “Seventh Five-Year” tackling project “with boiling furnace slag development of underground mine confined filling material”, on December 27, 1990 by China National Coal Mine Technology Development Corporation presided over the adoption of technology Identification. The material is mainly composed of boiling furnace slag, cement, silica fume and the amount of admixture, early with high strength, can produce plastic deformation and other characteristics, fully cured later, but also to achieve higher strength (1 day and 28 days compressive strength Respectively 11.9MPa and 23.6MPa), light weight (the dry bulk density of 1700 ~ 1800kg / m ~ 3). The above characteristics are in line with the regularity of the periodical variation of the mine pressure in the gob of mine, so the material can be used