浅埋薄基岩厚煤层覆岩移动演化规律数值模拟研究

 本文应用RFPA2D岩石破断过程分析系统对神府煤田柠条塔煤矿浅埋薄基岩厚煤层N1201首采工作面开采过程中覆岩移动演化规律进行数值模拟分析。模拟研究了煤层采动后其上覆岩层破断发展过程，揭示了工作面推进过程中采场岩层的破断机理和来压特点以及煤层顶板支承压力的变化规律，并与井下现场实测来压步距进行对比分析，为今后开采神府矿区相似工作面的顶板管理及矿压控制提供了重要的参考价值。

Study on Numerical Simulation of Overburden Strata Migration Evolution Law Above Thick Seam in Shallow Depth Thin Base Rock

The RFPA2D rock breaking process analysis system was applied to the numerical simulation analysis on the displacement evolution law of the overburden strata during the mining process of N1201 first coal mining face in shallow depth thick seam in thin base rock of Ningtiaota Mine of Shenfu Coalfield.The breaking development process of the overburden strata above the seam mined was simulated and studied.The paper revealed the breaking mechanism and the roof weighting features of the strata above the coal mining face during the coal mining face pushing forward process and the variation law of the roof support pressure above the seam.A comparison analysis was conducted on the site measured roof weighting step distance in the underground mine.Those could provided the important reference values to the roof control and the mine strata pressure control in the similar coal mining faces in Shenfu mining area.