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A platform for research: civil engineering, architecture and urbanism
Ultra-deep hole ground surface large-diameter directional grouting construction method
The invention discloses an ultra-deep hole ground surface large-diameter directional grouting construction method. The method comprises the following steps of A, measurement lofting and site leveling,wherein a construction site is reasonably arranged according to design requirements, the site is leveled, sundries are removed, soft soil is replaced and filled, compaction is carried out, after thesite is leveled, qualified measurement personnel are organized for lofting, all hole positions are released, measurement rechecking is carried out, lofting data are recorded for reference, and a drilling machine chassis is not suitable for being directly placed on non-solid filling soil so as to avoid uneven settlement. According to the method, grouting consolidation is carried out on an unexcavated section in a ground surface rigid sleeve valve pipe advanced grouting reinforcement mode; the method has the advantages that a stable consolidation body is formed on the periphery of the tunnel, the rigid sleeve valve pipe can form a micro-composite pile effect, the excavation construction safety in the tunnel is guaranteed, and the problems that in the excavation process of the remaining unexcavated section of the Taigu tunnel, running water, primary support deformation line invasion, collapse and mud gushing exist, and the excavation safety is low are solved.
本发明公开了超深孔地表大口径定向注浆工法，包括以下步骤：A测量放样及场地平整：根据设计要求合理布置施工场地，先平整场地、清楚杂物、换填软土、夯实密实，在进行场地平整后，组织有资格的测量人员放样，将所有孔位放出，做好测量复核，并记录放样数据备案，钻孔机底盘不宜直接置于不坚实的填土上，以免产生不均匀沉陷。本发明具备通过地表刚性袖阀管超前注浆加固方式对未开挖段进行注浆固结，在隧道周边形成稳定固结体，且刚性袖阀管可形成微复合桩效应，保证洞内开挖施工安全的优点，解决了太谷隧道剩余未开挖段洞内开挖过程中有流水、初支变形侵线、塌方涌泥，开挖安全性低的问题。
Ultra-deep hole ground surface large-diameter directional grouting construction method
The invention discloses an ultra-deep hole ground surface large-diameter directional grouting construction method. The method comprises the following steps of A, measurement lofting and site leveling,wherein a construction site is reasonably arranged according to design requirements, the site is leveled, sundries are removed, soft soil is replaced and filled, compaction is carried out, after thesite is leveled, qualified measurement personnel are organized for lofting, all hole positions are released, measurement rechecking is carried out, lofting data are recorded for reference, and a drilling machine chassis is not suitable for being directly placed on non-solid filling soil so as to avoid uneven settlement. According to the method, grouting consolidation is carried out on an unexcavated section in a ground surface rigid sleeve valve pipe advanced grouting reinforcement mode; the method has the advantages that a stable consolidation body is formed on the periphery of the tunnel, the rigid sleeve valve pipe can form a micro-composite pile effect, the excavation construction safety in the tunnel is guaranteed, and the problems that in the excavation process of the remaining unexcavated section of the Taigu tunnel, running water, primary support deformation line invasion, collapse and mud gushing exist, and the excavation safety is low are solved.
本发明公开了超深孔地表大口径定向注浆工法，包括以下步骤：A测量放样及场地平整：根据设计要求合理布置施工场地，先平整场地、清楚杂物、换填软土、夯实密实，在进行场地平整后，组织有资格的测量人员放样，将所有孔位放出，做好测量复核，并记录放样数据备案，钻孔机底盘不宜直接置于不坚实的填土上，以免产生不均匀沉陷。本发明具备通过地表刚性袖阀管超前注浆加固方式对未开挖段进行注浆固结，在隧道周边形成稳定固结体，且刚性袖阀管可形成微复合桩效应，保证洞内开挖施工安全的优点，解决了太谷隧道剩余未开挖段洞内开挖过程中有流水、初支变形侵线、塌方涌泥，开挖安全性低的问题。
Ultra-deep hole ground surface large-diameter directional grouting construction method
超深孔地表大口径定向注浆工法
WU HAIBO (author) / KONG DECHAO (author) / SHAO LIANGJUN (author) / DONG ZHONGYANG (author) / HUANG JITAI (author) / YUAN NING (author)
2020-12-25
Patent
Electronic Resource
Chinese
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