求翻译：钢筋笼和导管安放完毕后、浇筑水下混凝土前，检测桩底沉渣厚度。若沉渣超标，要立即进行第二次清孔，第二次清孔利用导管安装风管，气举反循环法清孔。是什么意思？

The reinforcement cage and the catheter placed after pouring underwater concrete, bottom sediment thickness in the detection of pile. If the sediment is exceeded, to immediately carry out the second hole cleaning, the second hole cleaning and the use of conduit installation duct, gas lift to clear t

steel cage and catheter placement, after pouring the concrete water before the dregs, the test pile thickness. If reared out immediately, to the second definition, the first 2 holes on the Hole catheter use, and install gas lift anti-robin clean holes.

正在翻译，请等待...

Reinforcing steel bar cage and catheter placement is complete, and before pouring underwater concrete, detection of pile-bottom sediment thickness. If excessive sediment, to immediately proceed to the second hole clearance, clearance holes for the second time with the conduit installation duct, air-

正在翻译，请等待...