Pipes na Casing da za a iya dawo da su

Pipes na retrievable casing wakilishi ya fasaha ta drilling ta kasa a cikin micropiling da deep foundation construction, suna aiki a matsayin temporary protective casings lokacin da ake ci gaba da borehole a cikin yanayin kasa mara sauƙi. Waɗannan pipes na steel an shigar da su cikin ƙasa lokacin aikin drilling kuma daga baya ake cire su lokacin da borehole ta isa ƙasar da ake buƙata, barin wuri mai tsabta da ƙarfi don shigar da micropile. Halin retrievable na waɗannan casings ya bambanta da su daga permanent casing systems, suna bayar da araha ta kudi da ayyuka na operational ga ayyuka inda ake buƙatar tallafi na wucin kasa na wucin a lokacin drilling phases. A cikin foundation engineering, pipes na retrievable casing sune muhimmin ayyuka don sarrafa inflow na ruwan ƙasa, hana collapse na borehole a cikin ƙasashen loose ko unconsolidated, da kuma kiyaye tsabta a cikin yanayin mixed-face inda overburden layers suka bambanta sosai.