| 高晓兵,郑 晨.石化基地深厚抛石地基的防渗措施[J].水运工程,2021,(5):48-52 |
| 石化基地深厚抛石地基的防渗措施 |
| Anti-seepage measure in deep riprap foundation of petrochemical base |
| |
| DOI： |
| 中文关键词: 石化基地 抛石地基 防渗 气动潜孔锤 塑性混凝土咬合桩 |
| 英文关键词:petrochemical base riprap foundation anti-seepage pneumatic DTH hammer plastic concrete occluded pile |
| 基金项目: |
|
| 摘要点击次数: 494 |
| 全文下载次数: 0 |
| 中文摘要: |
| 针对抛石地基中成孔难、漏浆严重的问题，通过对石化基地抛石地基的地质调查，分析抛石地基条件下其他工程防渗的成功案例，对比石化基地抛石地基中地质特征与成功案例的异同，结合气动潜孔锤成孔工艺，提出在深厚抛石地基中采用气动潜孔锤联合塑性混凝土咬合桩的防渗措施。气动潜孔锤钻进过程中采用加套管护壁工艺，可有效解决成孔过程中的塌孔问题及成桩过程中的漏浆问题，保障防渗体施工质量；塑性混凝土咬合桩在普通混凝土中加入掺和材料，提高咬合桩抗渗能力及对地基变形的适应能力。结果表明，气动潜孔锤联合塑性混凝土咬合桩是深厚抛石地基中有效、可靠的防渗措施。 |
| 英文摘要: |
| Aiming at the problems of difficult hole forming and serious slurry leakage in riprap foundation，we analyze the successful cases of seepage control of other projects under the condition of riprap foundation based on the geological investigation of the riprap foundation of petrochemical base，compare the similarities and differences between the geological characteristics and successful cases in the riprap foundation. Combining with the hole forming technology of pneumatic down the hole（DTH）hammer，we propose the anti-seepage measures of using pneumatic DTH hammer combined with plastic concrete occluded pile in deep riprap foundation. In the process of drilling with a pneumatic DTH hammer，casing wall protection technology can effectively solve the problems of hole collapse and slurry leakage in the process of pile forming，and ensure the construction quality of impervious core. The admixtures added into the ordinary concrete for the plastic concrete occluded pile can improve the impermeability of the occluded pile and adaptability to the deformation of the foundation. The results show that the pneumatic DTH hammer combined with plastic concrete occluded pile is an effective and reliable anti-seepage measure in a deep riprap foundation. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
