Kontirakito yoo lo inducer kiraki tabi ọna ariwo kekere deede fun yiyọ ori opoplopo si ipele gige-pipa.
Awọn olugbaisese yoo fi sori ẹrọ tẹlẹ inducer kiraki lati mu daradara mu kiraki lori opoplopo ni nipa 100 – 300 mm loke awọn opoplopo ori ge ipele. Awọn ọpa ibẹrẹ opoplopo ti o wa loke ipele yii ni a gbọdọ de-sopọ si kọnja nipasẹ awọn ohun elo bii foam polystyrene tabi kanrinkan roba. Lori excavation fun opoplopo fila ikole, opoplopo olori loke awọn kiraki ila yoo wa ni gbe u pin gbogbo nkan. 100 – 300 mm ti o kẹhin loke ipele gige ni a gbọdọ ge ni pipa ni lilo ina amusowo tabi awọn òòlù pneumatic.
Akoko ifiweranṣẹ: Oṣu kọkanla-10-2023