求翻译：该钻孔由于施工周期较长，在加深前进行洗井、抽水试验，之后下钻通孔，在通孔期间发生了孔内埋钻事故，之后进行了处理。是什么意思？

Drilling due to the long construction period, before deepening the well washing, pumping test, after through-hole drilling, hole burying accidents occurred during the through-hole, after processing.

正在翻译，请等待...

Because this drill hole the construction cycle is long, carries on before the deepening flushes, the pump experiment, afterwards under drills the through hole, in through hole period had in the hole to bury drills the accident, afterwards has carried on processing.

The drilling because of the long construction period, well before the deepening, pumping tests, in hole after hole, buried in the bore hole during drilling accident, after the treatment.