According to the mining geology term in Yangzhuang Coal Mine

two basic models of the strike and dip is established; and applying the method of numerical simulation

seam floor breakage depth

scope and mining floor stress afresh distributing are simulated and computed in the different face advance distance and different set-up room length. Contrasting the stress test and injection test in spot

two results are basically identical. It is shown that the results are useful for prevention and cure of limestone water of coal mine floor.