Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Roadbed grouting reinforcement construction method in existing line bridge and culvert jacking range
The invention discloses a roadbed grouting reinforcement construction method in an existing line bridge and culvert jacking range, relates to the technical field of civil engineering construction, and aims to solve the problems that a sleeve for supporting a grouting hole needs to be pulled out after a drill bit is pulled out and a PVC (polyvinyl chloride) pipe is inserted after a current down-the-hole hammer forms a hole, the sleeve easily drives the PVC pipe to move upwards when the sleeve is pulled out, and the construction cost is low. In order to solve the technical problems that in the prior art, the stability of the arrangement position of a PVC pipe in a hole is affected, and the bottom of a hole wall is prone to hole collapse, the technology is achieved based on a down-the-hole hammer drilling device, and the down-the-hole hammer drilling device comprises a hollow drill rod used for conveying high-pressure air, an eccentric down-the-hole hammer drill bit connected to the bottom end of the hollow drill rod and a rotating drill bit connected to the bottom end of the hollow drill rod; and the eccentric drill bit is eccentrically and rotatably arranged on the eccentric down-the-hole hammer drill bit and is used for expanding the hole diameter. By means of the limiting mode, the problem that the PVC grouting pipe body moves upwards is solved, the stability of supporting in the grouting hole is guaranteed, and the problem that the bottom of the hole wall collapses is solved.
本发明公开了既有线路桥涵顶进范围路基注浆加固施工方法，涉及土木工程施工技术领域，旨在解决当前潜孔锤成孔后抽出钻头，再插入PVC管后，还需将用来支护注浆孔的套管拉出，拉出套管时，套管易于带动PVC管上移，影响PVC管于孔内布置位置的稳定性，容易导致孔壁底部出现塌孔的技术问题，所述工艺基于一种潜孔锤钻孔装置来实现，所述潜孔锤钻孔装置包括，空心钻杆，用于输送高压空气，连接于空心钻杆底端的偏心潜孔锤钻头，用于进行旋转成孔，偏心转动设于偏心潜孔锤钻头上的偏心钻头，用于扩大孔径。本发明通过限位的方式，避免PVC注浆管主体上移的问题，保障注浆孔内支护的稳定性，避免孔壁底部出现塌孔的问题。
Roadbed grouting reinforcement construction method in existing line bridge and culvert jacking range
The invention discloses a roadbed grouting reinforcement construction method in an existing line bridge and culvert jacking range, relates to the technical field of civil engineering construction, and aims to solve the problems that a sleeve for supporting a grouting hole needs to be pulled out after a drill bit is pulled out and a PVC (polyvinyl chloride) pipe is inserted after a current down-the-hole hammer forms a hole, the sleeve easily drives the PVC pipe to move upwards when the sleeve is pulled out, and the construction cost is low. In order to solve the technical problems that in the prior art, the stability of the arrangement position of a PVC pipe in a hole is affected, and the bottom of a hole wall is prone to hole collapse, the technology is achieved based on a down-the-hole hammer drilling device, and the down-the-hole hammer drilling device comprises a hollow drill rod used for conveying high-pressure air, an eccentric down-the-hole hammer drill bit connected to the bottom end of the hollow drill rod and a rotating drill bit connected to the bottom end of the hollow drill rod; and the eccentric drill bit is eccentrically and rotatably arranged on the eccentric down-the-hole hammer drill bit and is used for expanding the hole diameter. By means of the limiting mode, the problem that the PVC grouting pipe body moves upwards is solved, the stability of supporting in the grouting hole is guaranteed, and the problem that the bottom of the hole wall collapses is solved.
本发明公开了既有线路桥涵顶进范围路基注浆加固施工方法，涉及土木工程施工技术领域，旨在解决当前潜孔锤成孔后抽出钻头，再插入PVC管后，还需将用来支护注浆孔的套管拉出，拉出套管时，套管易于带动PVC管上移，影响PVC管于孔内布置位置的稳定性，容易导致孔壁底部出现塌孔的技术问题，所述工艺基于一种潜孔锤钻孔装置来实现，所述潜孔锤钻孔装置包括，空心钻杆，用于输送高压空气，连接于空心钻杆底端的偏心潜孔锤钻头，用于进行旋转成孔，偏心转动设于偏心潜孔锤钻头上的偏心钻头，用于扩大孔径。本发明通过限位的方式，避免PVC注浆管主体上移的问题，保障注浆孔内支护的稳定性，避免孔壁底部出现塌孔的问题。
Roadbed grouting reinforcement construction method in existing line bridge and culvert jacking range
既有线路桥涵顶进范围路基注浆加固施工方法
WANG ZHIFENG (Autor:in) / CHEN SHITING (Autor:in) / SHEN BO (Autor:in) / ZHANG JICHAO (Autor:in) / HAN LIYONG (Autor:in) / ZHU YANYAN (Autor:in)
13.08.2024
Patent
Elektronische Ressource
Chinesisch
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