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地面预注浆法已成为立井井筒特殊凿井施工技术的1个重要组成部分,然而,井筒地面预注浆的理论研究却滞后于施工工艺的发展。在实际工程应用中,一直凭借施工经验来确定注浆浆液的扩散距离,导致只能估测浆液形成的堵水帷幕厚度;利用单裂隙层状岩体渗流模型,通过研究注浆浆液在裂隙岩体中流动的规律,并结合工程实例,分析影响浆液在基岩中扩散距离的因素。
The ground pre-grouting method has become an important part of the construction technology of shaft shaft special shafting. However, the theoretical research of pre-grouting on the shaft well lags behind the development of construction technology. In practical engineering applications, the grouting slurry diffusion distance has always been determined by construction experience, so that the thickness of the water blocking curtain formed by the slurry can only be estimated. Using the single-fractured layered rock mass seepage model, Body flow in the law, combined with engineering examples, analysis of the slurry in the bedrock diffusion distance factor.