秦岭腹地深埋隧洞不良地质洞段固结灌浆试验研究
Experimental Study on Consolidation Grouting in Poor Geological Section of Deep Tunnel in the Hinterland of Qinling Mountains
黄瑜潇 1麻蓉 1任喜平1
作者信息
- 1. 陕西省引汉济渭工程建设有限公司,陕西西安 710016
- 折叠
摘要
引汉济渭秦岭腹地深埋输水隧洞沿线的围岩地质和水文地质条件比较复杂,需要进行固结灌浆增强围岩的完整性、稳定性与防渗能力,选取试验区不良地质洞段进行研究,针对此区域实际地质和施工情况设计固结灌浆试验,对固结灌浆的施工方式、灌浆参数、人员设备、质量控制等进行综合评价,确定单位注入量、灌浆压力等试验参数.结果表明,随着灌浆压力增大各环序孔的灌入水泥单位注入量呈不断下降趋势,抬动观测均未发现抬动现象,检查孔的压水透水率均达到设计要求.说明此次固结灌浆试验取得了较好的成果,可为后续大面积施工和类似工程提供相关参考依据.
Abstract
The surrounding rock geological and hydrogeological conditions along the deep buried water delivery tunnel in the hinterland of Qinling and Hanjiwei are relatively complex,so consolidation grouting is needed to enhance the integrity,stability and anti-seepage ability of the surrounding rock.Poor geological cave sections in the test area are selected for research,and consolidation grouting tests are designed according to the actual geological and construction conditions in this area.The construction method,grouting parameters,personnel,equipment and quality control of consolidated grouting are evaluated comprehensively,and the test parameters such as unit injection amount and grouting pressure are determined.The results show that with the increase of grouting pressure,the unit injection amount of cement in each ring sequence hole decreases continuously.No lifting phenomenon is found in lifting observation,and the permeability of pressurized water in inspection holes meets the design requirements.It shows that the consolidation grouting test has achieved good results,which can provide relevant reference for subsequent large-scale construction and similar projects.
关键词
引汉济渭/不良地质/固结灌浆/试验研究Key words
Citing Han and Wei/bad geology/consolidation grouting/experimental study引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据