摘要
为了研究固体充填采煤充实率对导水裂隙带高度的控制作用,分析了固体充填采煤覆岩移动变形特征,借助等价采高理论套用经验公式对固体充填采煤不同充实率条件下导水裂隙带高度进行预计。运用数值模拟软件UDEC对不同充实率条件下导水裂隙带高度进行模拟,建立了固体充填采煤导水裂隙带高度预计的新方法,其结果与经验公式预计的结果相吻合。工业性试验表明:当煤层采高为3.5m、采空区充实率为85%时,导水裂隙带发育高度在10m左右,实测与预计结果基本一致。
In order to study the controlling influence of the filling rate of solid backfill mining on the height of water flowing fractured zone, the overlying rock movement and deformation characteristics are analyzed, and the height of the water flowing fractured zone with different fill- ing rates is estimated by equivalent mining height theory and empirical formula. The new way to estimate the height of water flowing fractured zone is established by using numerical simulation software UDEC to simulate the height of the water flowing fractured zone with different filling rates. The result is matching with that of the empirical formula. Industrial experiments show. the developing height of the water flowing fractured zone is about 10m with mining height of 3.5m and the filling rate of 85 %. Measured and estimated results are basically the same.
出处
《中国煤炭》
北大核心
2014年第1期50-53,57,共5页
China Coal
关键词
固体充填采煤
充实率
导水裂隙带
等价采高
solid backfill mining, filling rate, water flowing fractured zone, equivalent min- ing height
