饱和砂层定向诱导注浆理论及试验研究  

Saturated Sand Layer Orientable Induced Grouting Theoretical and Experiment Research

作　　者：李萌萌[1] 张维 邓洪亮[1] 王守凡 LI Mengmeng;ZHANG Wei;DENG Hongliang;WANG Shoufan(Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China;Beijing Municipal Road and Bridge Co.,Ltd.,Beijing 100045,China)

机构地区：[1]北京工业大学城市建设学部,北京100124 [2]北京市政路桥股份有限公司,北京100045

出　　处：《施工技术（中英文）》2022年第1期114-119,共6页Construction Technology

基　　金：国家自然科学基金重点项目:城市地铁施工安全风险动态分析与控制(12004014201501);北京市自然基金重点项目:城市地铁施工关键技术基础研究(Z1004014201601)。

摘　　要：穿越饱和砂层的地下工程在施工中易发生水害,但由于饱和砂层渗透性较差,采用常规注浆技术不易形成有效的加固体。考虑到排水压力对浆液扩散的促进作用和范围约束作用,提出饱和砂层定向诱导注浆理论,并通过理论推导提出定向诱导注浆的应力分布规律及判定条件。相关理论结果通过模型试验得到了有效验证,证明了定向诱导注浆对于提高注浆效率和质量的积极作用,为解决饱和砂层的注浆加固难题提供了一种新型有效的处理方法。The underground engineering crossing the saturated sand layer is prone to water disaster in the construction,but the permeability of the saturated sand layer is poor,so it is not easy to form an effective reinforcement body by using the conventional grouting technology.In order to solve this problem,an orientable induced grouting method is proposed to utilize drainage pressure to promote and navigate the diffusion of grout.The stress distribution law and judgment conditions of orientable induced grouting are obtained through theoretical derivation.The relevant theoretical results have been effectively verified in the model experiment,which proves the positive role of directional induction grouting in improving the grouting efficiency and quality,and provides a new and effective treatment method for solving the grouting reinforcement problem of saturated sand layer.

关 键 词：地下工程 饱和砂层 排水压力 定向诱导注浆 理论模型 试验 

分 类 号：TU753[建筑科学—建筑技术科学]