劈裂注浆技术研究新进展述评

New progress in theory and experiment of splitting grouting

软弱土、风化岩和破碎带等不良地质体在铁路、矿业、建筑及水利等行业广泛存在,劈裂注浆技术在这些不良地质体加固中具有优异的效果。基于黏性流体力学和弹性力学的基本理论,对劈裂注浆过程中注浆压力的衰减规律和劈裂缝的扩展规律进行深刻揭示,并在此基础上从理论计算、机理分析、试验探究及计算机数值模拟等方面对劈裂注浆技术的最新研究成果进行阐释和述评,主要是针对裂隙岩体的劈裂注浆机制、非对称荷载作用下的劈裂注浆机理及劈裂缝发展规律等进行深层次剖析,期望这些阐释和述评能为工程技术人员和科研人员提供有益启示和新见解。

Weak soils,weathered rocks and broken belts are widely present in railway,mining,construction and water Conservancy industries.Slitting grouting technology has excellent effect in the reinforcement of these poor geological bodies.The soft soil and other unfavorable geological bodies have played an irreplaceable role in strengthening,and have achieved obvious economic and social benefits.At the same time,the splitting grouting theory and experimental research have made great progress.Based on the basic theory of viscous fluid mechanics and elastic mechanics,the attenuation law of grouting pressure and the expansion law of splitting crack are deeply revealed.On the basis of this,the latest research results of splitting grouting technology are explained and reviewed from the aspects of theoretical calculation,mechanism analysis,experimental exploration and computer numerical simulation.This paper mainly analyzes the cracking grouting mechanism,the cracking grouting mechanism under asymmetric load and the law of crack development.It is hoped that these explanations and reviews can provide useful inspiration and new insights for engineers and researchers.