大采高综采面煤壁片帮控制技术的研究
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摘要
对大采高综采面煤壁片帮影响因素进行了分析,并应用数值计算软件FLAC3D对其进行了模拟计算。结果表明:随着采高的增大,顶板下沉量、煤壁最大水平位移均明显增大,在采高增大到6m以后达到了较大值,对煤壁稳定性造成很大影响,维护比较困难,工作面支架与护帮板的支护强度在一定范围内对顶板下沉量以及煤壁最大水平位移影响较大,但超出一定范围后效果不再明显。
Analyzed the factors affecting the coal wall gangs in fully mechanized coal mining face, and simulated it with numerical calculation software FLAC3D. The calculation results show that with the increase of mining height, the roof subsidence and the maximum horizontal displacement of the coal wall are significantly increased. After the mining height is increased to 6 m, the roof subsidence and the maximum horizontal displacement of the coal wall reach a larger value. The value has a great influence on the stability of the coal wall and it is difficult to maintain it. The support strength of the face support and the support strength of the retaining plate have a great influence on the roof subsidence and the maximum horizontal displacement of the coal wall within a certain range. After a certain range, the effect is no longer obvious.
Analyzed the factors affecting the coal wall gangs in fully mechanized coal mining face, and simulated it with numerical calculation software FLAC3D. The calculation results show that with the increase of mining height, the roof subsidence and the maximum horizontal displacement of the coal wall are significantly increased. After the mining height is increased to 6 m, the roof subsidence and the maximum horizontal displacement of the coal wall reach a larger value. The value has a great influence on the stability of the coal wall and it is difficult to maintain it. The support strength of the face support and the support strength of the retaining plate have a great influence on the roof subsidence and the maximum horizontal displacement of the coal wall within a certain range. After a certain range, the effect is no longer obvious.
引文
[1]中国工程院项目组.中国能源中长期发展战略研究[M].煤炭洁净煤节能战略卷.北京:科学出版社,2011:228-256.
[2]何富连,钱鸣高,刘长友等.高产高效工作面支架-围岩保障系统[M].徐州:中国矿业大学,1997:25-30.
[3]王国法.大采高技术与大采高液压支架的开发研究[J].煤矿开采,2009,14(1):24-26.
[4]袁文峰.大采高工作面初次来压的模拟与研究[D].太原:太原理工大学,2010:52-59.
[5]尹希文,闫少宏,安宇.大采高综采面煤壁片帮特征分析与应用[J].采矿与安全工程学报,2008(02):222-225.
[6]田建良.大采高综采面煤壁片帮机理及控制技术研究[D].安徽理工大学,2011.
[7]赵宏珠.液压支架工作阻力[M].北京:中国矿业大学出版社,1988,7-81.
[8]李建国,田取珍,杨双锁.综采放顶煤工作面俯、仰斜开采对煤壁片帮的影响机理研究[J].太原理工大学学报,2004(04):407-409.
[9]弓培林.大采高采场围岩控制理论及应用研究[M].北京:煤炭工业出版社,2010.
[2]何富连,钱鸣高,刘长友等.高产高效工作面支架-围岩保障系统[M].徐州:中国矿业大学,1997:25-30.
[3]王国法.大采高技术与大采高液压支架的开发研究[J].煤矿开采,2009,14(1):24-26.
[4]袁文峰.大采高工作面初次来压的模拟与研究[D].太原:太原理工大学,2010:52-59.
[5]尹希文,闫少宏,安宇.大采高综采面煤壁片帮特征分析与应用[J].采矿与安全工程学报,2008(02):222-225.
[6]田建良.大采高综采面煤壁片帮机理及控制技术研究[D].安徽理工大学,2011.
[7]赵宏珠.液压支架工作阻力[M].北京:中国矿业大学出版社,1988,7-81.
[8]李建国,田取珍,杨双锁.综采放顶煤工作面俯、仰斜开采对煤壁片帮的影响机理研究[J].太原理工大学学报,2004(04):407-409.
[9]弓培林.大采高采场围岩控制理论及应用研究[M].北京:煤炭工业出版社,2010.