Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Grouting process for fractured and easily collapsed stratum of hard rock
The invention relates to a grouting process for a hard rock broken easily-collapsed stratum, which comprises the following steps: carrying out a geological improvement grouting test on a pile foundation, optimizing the positions and the number of existing grouting holes according to a test result, and arranging the positions of the grouting holes; and cast-in-situ bored pile construction is conducted, and grouting construction is conducted on the arranged grouting hole positions after pile forming. By conducting a geological improvement grouting test on the pile foundation, the grouting amount and the grouting pressure change of the single pile foundation, the pile foundation hole forming and reaming conditions and the like are analyzed, four grouting holes are evenly formed in the periphery of the pile, normal grouting is achieved, the construction requirement can be met, the reaming rate of the pile foundation is further reduced to 7%, the grouting construction period of the pile foundation is obviously shortened, and the construction efficiency is improved. And the grouting cost is obviously reduced.
本发明涉及一种硬质岩破碎易塌地层注浆工艺，其包括：对桩基进行地质改善注浆试验，根据试验结果优化现有注浆孔的位置及数量，并布置注浆孔位；进行钻孔灌注桩施工，成桩后对布置的注浆孔位进行注浆施工。通过对桩基进行地质改善注浆试验，对单根桩基的注浆量及注浆压力变化，以及桩基成孔和扩孔情况等进行了分析可得桩周均匀设置四个注浆孔即正常注浆且可满足施工需要，桩基扩孔率进一步降低至7％，桩基注浆施工周期明显缩短，注浆成本显著降低。
Grouting process for fractured and easily collapsed stratum of hard rock
The invention relates to a grouting process for a hard rock broken easily-collapsed stratum, which comprises the following steps: carrying out a geological improvement grouting test on a pile foundation, optimizing the positions and the number of existing grouting holes according to a test result, and arranging the positions of the grouting holes; and cast-in-situ bored pile construction is conducted, and grouting construction is conducted on the arranged grouting hole positions after pile forming. By conducting a geological improvement grouting test on the pile foundation, the grouting amount and the grouting pressure change of the single pile foundation, the pile foundation hole forming and reaming conditions and the like are analyzed, four grouting holes are evenly formed in the periphery of the pile, normal grouting is achieved, the construction requirement can be met, the reaming rate of the pile foundation is further reduced to 7%, the grouting construction period of the pile foundation is obviously shortened, and the construction efficiency is improved. And the grouting cost is obviously reduced.
本发明涉及一种硬质岩破碎易塌地层注浆工艺，其包括：对桩基进行地质改善注浆试验，根据试验结果优化现有注浆孔的位置及数量，并布置注浆孔位；进行钻孔灌注桩施工，成桩后对布置的注浆孔位进行注浆施工。通过对桩基进行地质改善注浆试验，对单根桩基的注浆量及注浆压力变化，以及桩基成孔和扩孔情况等进行了分析可得桩周均匀设置四个注浆孔即正常注浆且可满足施工需要，桩基扩孔率进一步降低至7％，桩基注浆施工周期明显缩短，注浆成本显著降低。
Grouting process for fractured and easily collapsed stratum of hard rock
一种硬质岩破碎易塌地层注浆工艺
LIN XIDI (Autor:in) / LI YANZHE (Autor:in) / WU YI (Autor:in) / BAI XIAOMING (Autor:in) / LI XIN (Autor:in) / YU WENZHI (Autor:in) / WANG YINGWEI (Autor:in) / ZHAO WANCHAO (Autor:in) / LIANG JINFENG (Autor:in)
27.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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