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A platform for research: civil engineering, architecture and urbanism
Hectometer-level ultra-deep underground diaphragm wall body quality drilling coring detection method
The invention relates to a hectometer-level ultra-deep underground diaphragm wall body quality drilling coring detection method. The detection method comprises the following steps: pre-burying a steel pipe in an underground diaphragm wall, lowering the steel pipe along with a reinforcement cage, and enabling the burying depth of the steel pipe to be higher than that of a wall body detection part of the underground diaphragm wall; and after the concrete pouring of the underground diaphragm wall is completed and the design strength is reached, a drill bit of a drilling machine performs drilling coring detection on the wall body of the deep part of the underground diaphragm wall through the embedded steel pipe. Due to the fact that the grooving depth of an existing ultra-deep underground diaphragm wall breaks through the hectometer level, the deepest grooving depth reaches 150 meters, the perpendicularity of conventional drilling and coring mechanical equipment cannot be matched with the hectometer-level depth, and deflection, collision of underground diaphragm wall steel bars and even drilling through of a wall body of the underground diaphragm wall occur in the drilling process. The method has the advantages that the drilling detection efficiency is high, the damage to the underground diaphragm wall structure is small, and the purpose of performing drilling coring detection on the wall body of the ultra-deep underground diaphragm wall (the depth is larger than or equal to 100 meters) is achieved.
本发明涉及一种百米级超深地下连续墙墙身质量钻孔取芯的检测方法，通过在地下连续墙内预埋钢管，随钢筋笼一同下放，钢管埋设深度高于地下连续墙墙身检测部位；待地下连续墙混凝土浇筑完毕，达到设计强度后，钻机钻头通过预埋钢管内对地下连续墙深层部位的墙身进行钻孔取芯检测。由于目前超深地下连续墙成槽深度已突破百米级，最深成槽深度达150米，常规的钻孔取芯机械设备垂直度无法匹配百米级深度，在钻进过程中发生偏斜，碰撞地下连续墙钢筋，甚至钻穿地下连续墙墙身。本发明具有钻孔检测效率高，对地下连续墙结构损伤小，实现了对超深地下连续墙(深度≥100米)墙身进行钻孔取芯检测的目的。
Hectometer-level ultra-deep underground diaphragm wall body quality drilling coring detection method
The invention relates to a hectometer-level ultra-deep underground diaphragm wall body quality drilling coring detection method. The detection method comprises the following steps: pre-burying a steel pipe in an underground diaphragm wall, lowering the steel pipe along with a reinforcement cage, and enabling the burying depth of the steel pipe to be higher than that of a wall body detection part of the underground diaphragm wall; and after the concrete pouring of the underground diaphragm wall is completed and the design strength is reached, a drill bit of a drilling machine performs drilling coring detection on the wall body of the deep part of the underground diaphragm wall through the embedded steel pipe. Due to the fact that the grooving depth of an existing ultra-deep underground diaphragm wall breaks through the hectometer level, the deepest grooving depth reaches 150 meters, the perpendicularity of conventional drilling and coring mechanical equipment cannot be matched with the hectometer-level depth, and deflection, collision of underground diaphragm wall steel bars and even drilling through of a wall body of the underground diaphragm wall occur in the drilling process. The method has the advantages that the drilling detection efficiency is high, the damage to the underground diaphragm wall structure is small, and the purpose of performing drilling coring detection on the wall body of the ultra-deep underground diaphragm wall (the depth is larger than or equal to 100 meters) is achieved.
本发明涉及一种百米级超深地下连续墙墙身质量钻孔取芯的检测方法，通过在地下连续墙内预埋钢管，随钢筋笼一同下放，钢管埋设深度高于地下连续墙墙身检测部位；待地下连续墙混凝土浇筑完毕，达到设计强度后，钻机钻头通过预埋钢管内对地下连续墙深层部位的墙身进行钻孔取芯检测。由于目前超深地下连续墙成槽深度已突破百米级，最深成槽深度达150米，常规的钻孔取芯机械设备垂直度无法匹配百米级深度，在钻进过程中发生偏斜，碰撞地下连续墙钢筋，甚至钻穿地下连续墙墙身。本发明具有钻孔检测效率高，对地下连续墙结构损伤小，实现了对超深地下连续墙(深度≥100米)墙身进行钻孔取芯检测的目的。
Hectometer-level ultra-deep underground diaphragm wall body quality drilling coring detection method
百米级超深地下连续墙墙身质量钻孔取芯的检测方法
ZHANG ZHEBIN (author) / ZHENG CHONG (author) / HUANG ZHOUYAN (author) / LUO YUNFENG (author) / LI YUFENG (author) / GU HUAN (author) / CAI SUSU (author) / CHEN ZHIQIANG (author)
2021-10-22
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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