椭圆形陷落柱对综采工作面推进的影响

Effect of Elliptical Collapse Columns on Advance of Fully Mechanized Face

为研究椭圆形陷落柱对综采工作面推进的影响规律,以某矿12408工作面内的639#陷落柱为工程背景,采用理论分析、数值模拟和现场实测相结合的方法,研究分析陷落柱周围的塑性区分布和采动应力分布规律。确定了综采工作面距离陷落柱32 m时,陷落柱对综采工作面推进产生的影响及应采取安全防护措施。

To study the effect of elliptical collapse columns on the advance of fully mechanized mining face,taking the 639#collapse column in 12408 working face of a mine as the engineering background,using a combination method of theoretical analysis,numerical simulation and field measurement,the plastic zone distribution and mining stress distribution around the collapse columns were studied.When the fully mechanized mining face is determined to be 32 m away from the collapse column,the influence of the collapse column on the advance of the fully-mechanized mining face is determined,and the safety protection measures should be taken.