大倾角特厚煤层综放开采采场顶板破断特征

Roof Broken Features at Fully Mechanized Caving Mining Stope in Steep Inclined and Specially Thick Seam

针对大倾角特厚煤层综放采场冒落矸石下滑充填及顶板破断特征,将大倾角煤层采场上覆岩层视为倾斜弹性板,利用"板"的理论对大倾角综放采场顶板矿压显现规律进行了研究。研究表明,大倾角特厚煤层综放采场顶板的破断特征与冒落矸石的下滑、充填程度有密切关系,且受矸石影响较大。根据采场顶板的不同条件对其破断特征进行了研究,得出大倾角特厚煤层综放采场矿压显现规律及顶板破断特征。

Aiming at the falling rock slide filling and roof breaking features in large angle and specially thick seam fully mechanized caving mining, the study took the overlying rock of large dip angle seam as inclined elastic plate, the theory of “plate” is used to study the stope roof strata behavior laws in the large dip angle fully mechanized caving mining. Research shows that the stope breaking features are closely related to the degree of falling rock sliding and filling, and they are greatly influenced by the waste rock. According to the different conditions of the stope roof to study its breaking features, the article concluded the strata behavior and roof breaking fea- tures in the large dip angle and specially thick seam fully mechanized caving mining.