School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing) School of
Resources and Safety Engineering,China University of Mining and Technology(Beijing)

为了实现特殊条件下大采高工作面设备快速安全回撤,以赵庄矿5310工作面回撤通道为工程背景,综合采用现场调研、数值模拟、理论分析等方法,研究了基本顶不同断裂位置和周期来压步距对回撤通道的影响,进而确定合理的回撤通道位置;根据回撤通道赋存特征和围岩条件,坚持"顶帮协同控制"的原则,在提高支架初撑力的基础上,顶板采用全锚索支护、煤帮为锚网索联合支护。现场监测表明,该支护方案能够实现工作面设备顺利回撤,可为类似条件下工作面回撤通道的稳定性控制提供借鉴和参考。

In order to realize the equipment rapid and safety removal from a high cutting coal mining face under the special condition,based on the removal channel of No.5310 coal mining face in Zhaozhuang Mine as the engineering background,the site investigation,numerical simulation,theoretical analysis and other methods were comprehensively applied to study the different breakdown locations of the main roof and the periodical roof pressurized step distance affecteds to the equipment remov al channel. Therefore,the rational equipment removal channel location could be determined .According to the occurrence features and surrounding rock conditions of the equipment removal channel,to adhere the principle of " the roof and sidewall coordinative control",based on the improvement of the powered support initial support forc e,a full anchor support was applied to the roof and a bolt/steel mesh/anchor combined support was applied to the sidewall of the seam gateway. The site monitoring and measuring showed that the support plan could realize the successful equipment removal from the coal mining face and could provide the references to the removal cha nnel stability control of the coal mining face under the similar condition.

国家自然科学基金资助项目(51134025)；