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A platform for research: civil engineering, architecture and urbanism
High-pressure pre-filling karst cave pile foundation construction method
The invention discloses a high-pressure pre-filling karst cave pile foundation construction method, which belongs to the field of pit foundation karst cave construction, and comprises the following steps: S1, ground drilling: drilling a filling hole and an observation hole in the ground; s2, investigating the internal condition of the karst cave, and determining the internal size of the karst cave; s3, lowering the pipeline: lowering the filling pipe to the bottom of the karst cave through the filling hole, and lowering the observation pipe into the karst cave through the observation hole; s4, pre-stirring a filling material; s5, filling material backfilling is conducted, specifically, the filling material is injected into the filling pipe, the bottom of the karst cave is filled with the filling material, and the height of the filling pipe is continuously increased along with injection of the filling material; and S6, filling is stopped, the filling pipe is pulled out, and the filling material is stilled to be hardened. The construction method is simple and convenient, the multiple layers of karst caves can be pre-filled, unfavorable geological conditions are improved, the karst caves meet the cast-in-place pile construction requirements, the later pile foundation construction efficiency is improved, and the construction cost is reduced.
本发明公开了一种高压预填充溶洞桩基施工方法，属于坑基溶洞施工领域，其包括如下步骤：S1：地面钻孔：在地面钻取填充孔和观察孔；S2：勘察溶洞内部情况，确定溶洞内部大小；S3：下放管道：填充管通过填充孔下放到溶洞底部，观测管通过观察孔下放到溶洞中；S4：预拌填充料；S5：回填填充料：将填充料注入填充管中，填充料填入溶洞底部，且随着填充料的注入，不断抬高填充管的高度；S6：停止填充，拔出填充管，静待填充料硬化。本施工方法简单方便，能对多层溶洞进行预填充处理，改善不良地质条件，使溶洞满足灌注桩施工要求，提高后期桩基础施工效率，降低施工成本。
High-pressure pre-filling karst cave pile foundation construction method
The invention discloses a high-pressure pre-filling karst cave pile foundation construction method, which belongs to the field of pit foundation karst cave construction, and comprises the following steps: S1, ground drilling: drilling a filling hole and an observation hole in the ground; s2, investigating the internal condition of the karst cave, and determining the internal size of the karst cave; s3, lowering the pipeline: lowering the filling pipe to the bottom of the karst cave through the filling hole, and lowering the observation pipe into the karst cave through the observation hole; s4, pre-stirring a filling material; s5, filling material backfilling is conducted, specifically, the filling material is injected into the filling pipe, the bottom of the karst cave is filled with the filling material, and the height of the filling pipe is continuously increased along with injection of the filling material; and S6, filling is stopped, the filling pipe is pulled out, and the filling material is stilled to be hardened. The construction method is simple and convenient, the multiple layers of karst caves can be pre-filled, unfavorable geological conditions are improved, the karst caves meet the cast-in-place pile construction requirements, the later pile foundation construction efficiency is improved, and the construction cost is reduced.
本发明公开了一种高压预填充溶洞桩基施工方法，属于坑基溶洞施工领域，其包括如下步骤：S1：地面钻孔：在地面钻取填充孔和观察孔；S2：勘察溶洞内部情况，确定溶洞内部大小；S3：下放管道：填充管通过填充孔下放到溶洞底部，观测管通过观察孔下放到溶洞中；S4：预拌填充料；S5：回填填充料：将填充料注入填充管中，填充料填入溶洞底部，且随着填充料的注入，不断抬高填充管的高度；S6：停止填充，拔出填充管，静待填充料硬化。本施工方法简单方便，能对多层溶洞进行预填充处理，改善不良地质条件，使溶洞满足灌注桩施工要求，提高后期桩基础施工效率，降低施工成本。
High-pressure pre-filling karst cave pile foundation construction method
一种高压预填充溶洞桩基施工方法
LIU YONGFENG (author) / RONG JINGSONG (author) / XIAO CHENGHUI (author) / WANG YUANZHE (author) / ZENG FEI (author) / HUANG GUOZHONG (author) / SHAN LIANG (author) / ZHOU HANBIN (author)
2022-07-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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