高喷灌浆技术在水库除险加固工程中的应用

Application of High Sprinkler Grouting Technology in the Strengthening of Reservoir

摘要:

高压喷射灌浆是在高压作用下使浆液高速喷射到周围地层，对地质介质产生冲切、搅拌和挤压等作用，在浆液凝固后可以起到封堵裂隙、加固结构的效果。本文以河南省某水库为例,结合工程实际情况,简要分析高压喷射灌浆施工工艺,并设计高压喷射灌浆方案,进行高压喷射灌浆施工。最后通过一系列检测试验，对本次防渗墙施工质量进行检验。结果表明:防渗墙的渗透系数、抗压强度和弹性模量等均达到工程设计要求,取得了理想的防渗效果。

Abstract:

High pressure jet grouting is under the action of high pressure to make the slurry high-speed jet to the sur-rounding strata, resulting in the geological medium punching, stirring and extrusion, which can play the function in seal-ing the cracks and strengthening the structure after the slurry solidification. This paper takes a reservoir in Henan Province as an example, combined with the actual situation of the project, briefly analyzes the construction technology of high-pressure jet grouting, and designs the high-pressure jet grouting scheme to carry out high-pressure jet grouting construction. At last, through a series of testing tests, the construction quality of the cutoff wall is tested. The results show that the permeability coefficient, compressive strength and elastic modulus of the anti-seepage wall meet the engineering design requirements, and the anti-seepage effect can be achieved.