Research on Surface Deformation with Increasing Mine Depth、Research on bottom anchor supporting technology in donghai coal mine roadway、Study on Simulation of Deep Roadway Support Effect based on Mechanics Analysis and Material Properties、深部巷道圍巖破壞機理及支護研究、高應力軟巖巷道支護模擬研究、大采高回采巷道圍巖塑性區(qū)分布研究、深部巷道底鼓控制技術研究、煤柱下回采巷道礦壓的顯現(xiàn)規(guī)律、放頂煤工作面液壓支架的適應性等等