【摘要】：以榆陽煤礦2307綜采充填工作面為背景,采用風(fēng)積砂高水膨脹材料充填技術(shù)進(jìn)行了開采試驗(yàn)。充填材料主要為風(fēng)積砂、粉煤灰、石膏、生石灰等常用建筑材料,根據(jù)充填材料要求并通過試驗(yàn)確定了配比為風(fēng)積砂366.3kg/m~3、粉煤灰366.3kg/m~3、輔料81.6kg/m~3、水650.8kg/m~3;按照滿足直接頂不出現(xiàn)初次斷裂的條件,得出充填步距為6.4m;采用2套充填能力為180m~3/h的充填料漿制備裝置和充填管路對(duì)工作面采空區(qū)進(jìn)行充填,充填能力達(dá)360m~3/h;提出了具體的充填工藝流程。試驗(yàn)結(jié)果表明,工作面無明顯來壓現(xiàn)象,充填體強(qiáng)度基本滿足要求,巷道圍巖變形較小,有效控制了地表下沉,達(dá)到了保水采煤的目標(biāo),提高了礦區(qū)經(jīng)濟(jì)效益。
[Abstract]:Based on the 2307 fully mechanized mining filling face in Yuyang Coal Mine, the mining test was carried out by using the filling technology of eolian sand and high water expansion material. The filling materials are mainly aeolian sand, fly ash, gypsum, quicklime and other common building materials. According to the requirements of filling materials and through the test, the proportion is 366.3 kg / m / 3, 366.3 kg / m / 3, 81.6 kg / m / 3, water 650.8 kg / m / 3, and the filling step is 6.4m according to the requirements of filling materials and the test results show that the filling step is 6.4m, the filling step is 6.4m. Two sets of filling slurry preparation device and filling pipeline with 180m~3/h filling capacity are used to fill the goaf of the working face, and the filling capacity is 360 m 鈮，

本文編號(hào)：2497601