| 粉细砂地层防渗帷幕综合施工方法 |
| 投稿时间：2014-10-14 修订日期：2014-10-14 点此下载全文 |
| 引用本文：丁跃军.粉细砂地层防渗帷幕综合施工方法[J].钻探工程,2015,42(4):76-78.DING Yue-jun. Comprehensive Construction Method of Anti-seepage Curtain in Silt and Fine Sand Layer[J]. Drilling Engineering, 2015,42(4):76-78. |
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| 中文摘要:四川省武都水库右岸EL574 m灌浆平洞揭露出厚度2.3～9.8 m的粉细砂层，普通水泥高压灌浆无法形成可靠的防渗帷幕。采用高压旋喷、湿磨细水泥、化学灌浆的组合处理方式，取得了较好的施工效果。通过钻孔压水、大功率声波CT、单孔声波、钻孔全景数字成像等方法检测，表明达到了设计防渗要求。 |
| 中文关键词:粉细砂地层 帷幕灌浆 高压旋喷 湿磨细水泥 化学灌浆 |
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| Comprehensive Construction Method of Anti-seepage Curtain in Silt and Fine Sand Layer |
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| Abstract:On the right bank of Wudu reservoir of Sichuan, silt and fine sand layer with thickness of 2.3～9.8m exposed in EL574m grouting adit; in this case, reliable anti-seepage curtain can not be formed by high pressure grouting with ordinary cement. By the use of a combined grouting method of high pressure jetting grouting, wet grinding fine cement and chemical grouting, good construction effect is achieved. The construction was tested by water pressure in borehole, high-power acoustic CT, single-hole acoustic wave and drilling digital panoramic imaging, which indicates that the construction has met the requirement of designed seepage control. |
| keywords:silt and fine sand layer curtain grouting high-pressure jet grouting wet grinding fine cement chemical grouting |
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