坚硬顶板切眼预裂条件下综采工作面相似模拟研究

Analog Simulation Study on the condition of hard roof open-off cuts pre-splitting in fully mechanized working face

为研究坚硬顶板综采工作面在切眼顶板预裂条件下的覆岩移动规律，以山西凌志达煤矿15101工作面为研究对象，采用相似模拟的研究方法，对15101工作面直接顶破断、基本顶初次破断、基本顶周期性破断规律进行模拟研究，再现了覆岩裂隙场的发育过程，得出了工作面顶板垮落特征及顶板垮落带和裂缝带“两带”高度等，为工作面矿压及顶板管理提供了相应的参考。

In order to study the overburden strata movement on the condition of open-off cuts pre-splitting in large mining height fully mechanized working face with hard roof, taking 15101 working face of Lingzhida coal mine in Shanxi province as the object, research the rule of work face immediate roof broken, main roof first broken, main roof periodic broken,reproduction process of overburden strata fracture field by the method of similar simulation, study of collapsing characteristic of hard roof ,the roof caving zone and fractured zone height is measured, and it can provid reference for the working face of underground pressure control and roof management.