消能塘底板在射流冲击下，底板块在冲击区受到较大的冲击压力。
The stilling basin base plate supports large impact pressure in the impacted area.
现场实践表明，采用底板支承压力区进行深部松动爆破能有效控制回采巷道底鼓，满足生产需要。
Field practice shows that the method of making loose blasting deeply in the area of the mining abutment pressure can control the entry floor heave effectively and meet the need of the production.
当煤层顶底板粘结性能一定时，随煤层埋深的增加，煤柱塑性区宽度增加。
While the interfacial bond property is unchanged, the width of plastic zone of pillar increases with the increase of buried depth of coal seam.
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