Jizhong Energy Handan Mining Group Co., Ltd. National Energy Backilling Mining Teachnology Key Laboratory

基于超高水材料速凝早强、强度可调、再胶结等基本特性,针对煤炭开采过程中遇到的实际问题,制定了超高水材料制浆输送工艺流程,发明了超高水材料充填液压支架,并将超高水材料应用于充填采煤、沿空留巷、采空区地面注浆加固、采空区防灭火技术、“两步法”注浆改造奥灰含水层等领域。结果表明:在对采空区实施充填开采后,采空区上覆岩层活动较为平稳,没有出现明显的周期来压现象,其充填效果较好;将超高水材料用于采空区灭火,不仅起到隔绝空气的作用,同时也阻止了有害气体的挥发,降低了空气中有毒有害物质浓度,减少了材料用量,降低了充填成本。超高水材料作为一种新型矿山充填材料在煤矿多个领域中的应用技术已基本成熟。

Based on the basic characteristics of ultra high-water materials, such as early strength, strength adjustable and re-cementing, in view of the practical pro blems encountered in the process of coal mining, the development of ultra-high water slurry process, super high water material flldl with hydraulic support. The applica tion of ultra-high water materials in the new technology fields such as coal mining, gob-side entry retaining, ground pit grouting reinforcement, goaf fire prevention and C ontrol technology, and"two-step-method' grouting transfortion. The results showed that the activity of the overburden strata in the goaf was smooth and the apparent pre ssure was not obvious in the mined-out area, and the flling effect was better. The ultra-high water material was used for the fire-not only play the role of isolation of the air, but also to prevent the evaporation of harmful gases, reducing the concentration of toxic and harmful substances in the air, reducing the amount of materials, reduci ng the flling costs. The application technology of ultra-high water material as a new type of mine flling material in coal mine had been basically mature.