摘要
通过对120502轨道巷设置多个观测点,观测了120502轨道顺槽顶板离层仪的变化数据和120502轨道顺槽表面位移量数据,现场观测数据表明:120502轨道顺槽顶板离层不大,该巷道从180 m处开始进入120501工作面采空区影响范围、从327 m处进入120601工作面采空区影响范围。通过观测,对120502轨道顺槽顶板影响不大。同时帮部加固后位移量及位移速度明显减小。离层量已基本趋于稳定。在后期掘进过程中,原则上不得留顶煤,且巷道破顶量保持在0.8~1.2 m。
By setting up several observation points on the 120502 track Lane,the change data of the roof separation instrument and the displacement data of the 120502 track along the groove surface are observed.The field observation data show that the roof separation of the 120502 track along the groove is not big,and the roadway is opened from 180 m.It starts to enter the influence range of the goaf of 120501 working face and enters the influence range of the goaf of 120601 working face from 327 m.Through observation,it has little influence on the roof of 120502 track.At the same time,the displacement and displacement velocity of the strengthened wall are obviously reduced.The amount of separation has been basically stable.In the later driving process,in principle,no top coal shall be left,and the amount of roadway top breaking shall be kept at 0.8~1.2 m.
作者
李挺
Li Ting(Malan Mine of Xishan Coal Electricity Group Co.,Ltd.,Gujiao Shanxi 030205)
出处
《山西冶金》
CAS
2020年第3期62-63,70,共3页
Shanxi Metallurgy
关键词
掘进工作面
矿压观测
离层仪
driving face
mine pressure observation
layer separator
