煤炭工程 ›› 2013, Vol. 45 ›› Issue (9): 79-82.doi: 10.11799/ce201309028

• 研究探讨 • 上一篇    下一篇

急倾斜煤层综采工作面顶板活动规律的数值模拟研究

吴睿1,姬王鹏2,郭卫彬3   

  1. 1. 中国矿业大学矿业工程学院
    2. 中国矿业大学矿业学院
    3. 中国矿业大学
  • 收稿日期:2013-03-18 修回日期:2013-04-11 出版日期:2013-09-10 发布日期:2013-09-10
  • 通讯作者: 吴睿 E-mail:cumtwr@163.com

Study of the Moving Law of Deeply Inclined Coal Seam’s Roof According to Numerical Simulating

  • Received:2013-03-18 Revised:2013-04-11 Online:2013-09-10 Published:2013-09-10

摘要:

本文以新强煤矿45051急倾斜综采工作面为工程背景,采用UDEC数值模拟计算的方法,研究不同煤层厚度、倾角及面长条件下工作面顶板的活动规律。研究表明:急倾斜煤层工作面覆岩破坏的范围主要在采空区中上部,上部顶板主要受拉伸破坏,采空区底鼓现象比较明显;煤层倾角越大,煤厚越大,面长越长,急倾斜工作面顶板活动越剧烈,其中煤层倾角对其影响最大。研究结果对急倾斜工作面围岩与支架稳定性控制具有理论指导意义。

关键词: 急倾斜, 数值模拟, 顶板活动规律

Abstract:

The UDEC numerical simulating was used to study roof movement laws under different conditions such as different coal thickness ,dip angle and length of workface under the engineering background of steep coal seam workface in Xinqiang Coal Mine. The research shows that the range of overburden’s destruction is mainly on the up and middle of goal. Because of slide instability the upper roof make tensile fracture and the phenomenon of floor heave is serious. The overburden move will become more severe when adding coal seam dip angle, thickness and workface length. The coal seam dip angle is the most important one among all the factors. This research achievement possesses theoretical guiding significance for the stability of surrounding rock and support system on steep coal seam workface.

Key words: deeply inclined coal seam, numerical simulating, roof movement laws

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