Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Consolidation grouting construction method for granite flash rock arch dam foundation
The invention discloses a consolidation grouting construction method for a granite flash rock arch dam foundation. Construction is conducted through a cover-weight-free consolidation grouting construction method, cover-weight-free consolidation grouting is adopted for a riverbed dam section, and cover-weight-free and cover-weight-combined guide pipe grouting is adopted for a bank slope dam section; the cover-weight-free consolidation grouting is cover-weight-free bare rock drilling grouting carried out before concrete is poured into the arch dam; and pipe guiding grouting is conducted, specifically, after non-cover-weight grouting of the bank slope dam section is finished, drilling and pipe guiding are conducted on the shallow surface layer section, pipe guiding grouting is conducted after the concrete cover weight and the temperature reach the conditions, and pipe guiding grouting comprises dam foundation shallow surface layer reinforcing grouting and dam foundation contact grouting. According to the method, cover-weight-free grouting is carried out before concrete pouring, so that the cross construction influence of cover-weight dam foundation consolidation grouting and concrete pouring is greatly reduced and avoided, and the situation that embedded parts in dam concrete are damaged by dam foundation consolidation grouting drill holes and concrete cracks are caused by dam foundation consolidation grouting is reduced and avoided; and the overall progress control and optimization of the construction are better realized.
本发明公开了一种花岗闪长岩拱坝坝基固结灌浆施工方法。采用无盖重固结灌浆施工方法施工，其中，河床坝段采用无盖重固结灌浆，岸坡坝段采用无盖重结合有盖重引管灌浆；无盖重固结灌浆是拱坝浇筑混凝土之前进行的无盖重裸岩钻孔灌浆；引管灌浆是岸坡坝段在无盖重灌浆结束后，进行浅表层段进行钻孔引管，当混凝土盖重及温度达到条件后进行引管灌浆，引管灌浆包含坝基浅表层加固灌浆和坝基接触灌浆。本发明方法在混凝土浇筑之前进行无盖重灌浆，大幅度减少、避免了有盖重坝基固结灌浆与混凝土浇筑的交叉施工影响，减小、避免因坝基固结灌浆钻孔破坏大坝混凝土中的预埋件，及坝基固结灌浆导致混凝土裂缝，更好实现了施工总体进度控制与优化。
Consolidation grouting construction method for granite flash rock arch dam foundation
The invention discloses a consolidation grouting construction method for a granite flash rock arch dam foundation. Construction is conducted through a cover-weight-free consolidation grouting construction method, cover-weight-free consolidation grouting is adopted for a riverbed dam section, and cover-weight-free and cover-weight-combined guide pipe grouting is adopted for a bank slope dam section; the cover-weight-free consolidation grouting is cover-weight-free bare rock drilling grouting carried out before concrete is poured into the arch dam; and pipe guiding grouting is conducted, specifically, after non-cover-weight grouting of the bank slope dam section is finished, drilling and pipe guiding are conducted on the shallow surface layer section, pipe guiding grouting is conducted after the concrete cover weight and the temperature reach the conditions, and pipe guiding grouting comprises dam foundation shallow surface layer reinforcing grouting and dam foundation contact grouting. According to the method, cover-weight-free grouting is carried out before concrete pouring, so that the cross construction influence of cover-weight dam foundation consolidation grouting and concrete pouring is greatly reduced and avoided, and the situation that embedded parts in dam concrete are damaged by dam foundation consolidation grouting drill holes and concrete cracks are caused by dam foundation consolidation grouting is reduced and avoided; and the overall progress control and optimization of the construction are better realized.
本发明公开了一种花岗闪长岩拱坝坝基固结灌浆施工方法。采用无盖重固结灌浆施工方法施工，其中，河床坝段采用无盖重固结灌浆，岸坡坝段采用无盖重结合有盖重引管灌浆；无盖重固结灌浆是拱坝浇筑混凝土之前进行的无盖重裸岩钻孔灌浆；引管灌浆是岸坡坝段在无盖重灌浆结束后，进行浅表层段进行钻孔引管，当混凝土盖重及温度达到条件后进行引管灌浆，引管灌浆包含坝基浅表层加固灌浆和坝基接触灌浆。本发明方法在混凝土浇筑之前进行无盖重灌浆，大幅度减少、避免了有盖重坝基固结灌浆与混凝土浇筑的交叉施工影响，减小、避免因坝基固结灌浆钻孔破坏大坝混凝土中的预埋件，及坝基固结灌浆导致混凝土裂缝，更好实现了施工总体进度控制与优化。
Consolidation grouting construction method for granite flash rock arch dam foundation
一种花岗闪长岩拱坝坝基固结灌浆施工方法
LIU TAO (Autor:in) / ZHOU QIANG (Autor:in) / DENG QIANG (Autor:in) / LIU GUIJUN (Autor:in) / LI JIAN (Autor:in) / ZHANG XIANPING (Autor:in) / GAO QIANYUAN (Autor:in) / LIU SAIZHAO (Autor:in) / WANG JIANUAN (Autor:in) / WANG JIANQIANG (Autor:in)
16.05.2023
Patent
Elektronische Ressource
Chinesisch
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