Based on the equilibrium equation of annular plates, the limit loads of annular plates under ultimate condition of the maximal moment were calculated by singular function.
从环板的平衡方程出发，应用奇异函数法计算其在最大弯矩极限条件下的极限荷载。
2
According to theoretical calculate and water surge and lithology condition when digging into 3 coal, the maximal height of the crack strap is not attach to Quaternary alluvium.
Although the peak value of return shock is relatively low, the effect time is long and sometimes the scope excesses the maximal overpressure of some deflagration condition.