对钻孔精确度，孔径，孔数量，孔位与铜箔表面确认，是否有相应的检验程序？
Is there a general inspection procedure with Drilling accuracy Hole size Hole quantity Hole location and Copper surface appearance defined?
是否在开始生产国产前，对钻孔程序进行检验？
Is the drilling program checked prior to being released for production?
突出煤层卸压后用钻孔瓦斯涌出初速度进行工作面预测和效果检验时经常超过突出临界值，造成开采保护层后煤层突出危险性更大的现象。
The main factors affecting the initial speed are studied and the causes of initial speed from borehole gas emission often exceeding limit theoretically explained.
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