【摘要】 为了防治急斜煤层浅部综放开采出现的矿震灾害及深刻理解其机理,采用物理相似模拟实验进行了研究。研究结果表明,急斜煤层浅部矿震机理为单个煤柱失效后,进而引起采场煤柱连锁失稳,最终导致巨厚覆岩大面积垮落,产生矿震,其本质是空间结构失稳造成,由此提出"空间结构破坏型矿震"观点;结合生产实际,提出控制此类矿震的关键在于控制综放段上覆浮矸厚度,留设足够厚度的隔离煤柱和提前预爆破顶板的防治措施。更多还原

【Abstract】 In this study,a physical simulation experiment was conducted to investigate the mine-induced earthquake phenomenon. The purpose of this study is to understand the mechanism of mine-induced earthquakes and prevent the disaster of mine-induced earthquakes in steep coal seam. The mechanism of the mine-induced earthquake was concluded that if a single coal pillar is disabled,all coal pillars will be soon disabled,and then eventually huge thick overlying rock will collapse and cause the earthquake. The nature of the problem is the disabled space frame. Therefore the study suggests a new theory of "space frame destructed mine-induced earthquake". In mining practice,the key in controlling mine-induced earthquake is to control the thickness of waste rock pile above the section of fully mechanized long-wall top caving. The prevention measures are proposed as leaving coal pillars and blasting roof in advance to enable appropriate thickness of waste rock pile.更多还原