金宝屯煤矿N211综采工作面“两带”高度研究

Study on the “Two-zone”height of No. N211 fully-mechanized mining face in Jinbaotun Coal Mine

根据金宝屯煤矿综采工作面地质条件与开采条件,采用理论计算与数值模拟确定了工作面覆岩垮落带和裂隙带的发育高度。理论计算确定工作面垮落带发育高度为5.6~10.6 m,导水裂隙带高度为27.3~38.5 m。利用离散元UDEC模拟确定垮落带发育高度为11~12 m,导水裂隙带高度26~33 m。两种确定方法具有良好的一致性。

According to the geological and mining conditions of fully-mechanized mining face in Jinbaotun Coal Mine,the growth height of caving zone and fractured zone were determined by theoretical calculation and numerical simulation. Based on the theoretical calculation,the growth height of caving zone was between 5. 6 m ~ 10. 6 m,the growth height of water flowing fractured zone was between 27. 3m ~ 27. 3m; Based on the discrete element UDEC simulation,the growth height of caving zone was between 11 m ~ 12 m,the growth height of water flowing fractured zone was between 26 m ~ 33 m. There was a good consistency of these two methods.