复采区超高水注浆材料的配比实验  

Proportion Experiments of Ultra-high-water Grouting Material in Compound Mining Area

作　　者：鲍俊睿 刘士奇[1] 杨宁[1] BAO Junrui LIU Shiqi YANG Ning(School of Mining Engineering, Taiyuan University of Technology School of Mining, Taiyuan, Shanxi 030024, Chin)

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《矿业研究与开发》2017年第3期60-62,共3页Mining Research and Development

基　　金："十二五"国家科技支撑计划项目(2012BAB13B04)

摘　　要：复采矿井的重新开采对煤炭资源的可持续性发展有着极其深远的意义。由于残采矿井存在有较多的空巷以及旧采破碎区,无法进行常规的长臂开采,因此必须对残采破碎区进行适当的充填,而充填材料的选取是注浆成败的关键。实验材料为超高水材料,主要配料为半水石膏、复合速凝剂、消石灰以及复合缓凝分散剂。通过实验确定了超高水材料的最优配比为消石灰14.8%,半水石膏30.4%,复合速凝剂7.0%,复合缓凝分散剂剂47.8%,水灰比9∶1。The re-mining of mine has a far-reaching significance on the sustainable development of coal resources. Because there are many empty drifts and old mining areas in re-exploited mine, it is impossible to carry out the conventional long-arm mining. Therefore, it is necessary to properly fill the crushing zone, and the filling material is the key to success. In this paper, the ultra-high-water material was selected as the experimental material, and the hemihydrate gypsum, composite quick-setting agent, slaked lime and composite retarder dispersant were used as the main ingredients. Through the experiments, the optimal proportion of ultra-high-water material was determined as the slaked lime of 14.8%, hemihydrate gypsum of 30.4%, composite quick-setting admixture of 7.0%, compound retarding dispersant of 47.8% and water-cement ratio of 9 ：1.

关 键 词：超高水材料 最优配比 凝结时间 正交试验 

分 类 号：TD823.7[矿业工程—煤矿开采]