中文摘要：

以淮南矿区3个典型的深井工作面为工程背景,运用数值模拟、相似模型试验和现场监测的综合研究方法,对深部采场采动应力、覆岩运移以及裂隙分布的动态演化特征和时空耦合规律进行系统研究,相应探讨了采动应力场、覆岩位移场及顶板裂隙场的动态响应机制。研究发现：采动应力受开采进度影响明显,工作面见方前后20 m的范围为应力显著影响区,两者之间具有动力响应的瞬变演化特征。覆岩运移具有很强的时空观,同一层位的岩层随推进时步增加垂直位移近似成＂Z＂字型分布。顶板塑性区的破坏范围与推进度保持同步协调关系,扩展空间由下及上,破坏深度由表及里,影响时间由短变长。顶板破断具有瞬时突变、分段延伸和分区迁移的时空特点,覆岩裂隙场经历了卸压失稳、张裂破坏、萎缩变小、拟合封闭的时空演变过程。现场监测获得了推进时间与覆岩破坏的采动响应模式,研究结论为深部煤岩动力灾害的防控提供理论参考。

英文摘要：

With three typical deep mine working faces of Huainan mining area as research background, the dynamic evolutionary characteristics and spatiotemporal coupling effect of mining pressure, strata movement and fracture distribution in deep stope have been studied by using the comprehensive methods composed of numerical simulation, similar simulation and field monitoring. Furthermore, the dynamic response mechanism of mining stress field, overlying strata displacement field and roof fracture field has also been investigated. The results have shown that mining stress is significantly affected by mining progress, and the range within 20 m before and after working face squaring is the significantly affected zone of stress, with the dynamic response of the transient evolution features between mining stress and progress. Strata movement has strong spatial-temporal view, the same layer of strata with the speed increasing vertical displacement into a ＂Z＂ shaped distribution. Roof fracture range of plastic zone and mining advance progress keep synchronous coordination, and expansion space changes from lower to upper, damage depth from outside to inside, and affecting time from short to long. Roof breaking has spatial and temporal characteristics of transient, piecewise extension and partition mobility, strata fracture field has experienced spatial and temporal evolution process of pressure relief and instability losing, extensional cracking, fracture shrinking and turning small, fitting and closing. Mining response mode of advancing time and overburden failure has been obtained by field monitoring, and research results have provided a theoretical reference for the prevention of deep rock dynamic disasters.