Double-pile-casing device for drilling deep and thick block stone backfill layer

The utility model discloses a double-pile-casing device for drilling of a deep and thick block stone backfill layer, and relates to the technical field of cast-in-place pile drilling. The pile casing comprises an outer pile casing and an inner pile casing, the inner diameter of the outer pile casing...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU JINGJING, HU LIANG, ZHAO XIAOLEI, ZHU JIANQIANG, DU JIANZHAO, HUANG LEI, LI SHENGLI, WANG WENYI, TIAN LIQIANG, CHENG XIANWEI, HE YUPU, ZHENG BAORUI, GAO ZHE, JIN LEI, WANG WEI, LIU RUSONG, LI FULAI, CHEN KELONG, WANG DELIANG, YANG HUILONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
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