高压喷射灌浆技术在堤防渗漏抢险中的应用

Application of high pressure jet grouting to emergency rescue for leakage from embankment

在堤防渗漏险情中,高压喷射灌浆主要用于处置初发险情或用于病险堤段的除险加固,根据不同的地质情况,可考虑采用不同组合形式的高压喷射灌浆,即:(1)双管高压旋喷法;(2)双管高压摆喷直线搭接法;(3)双管高压摆喷折线搭接法等。经过实践证明,相对于其他软基防渗措施,高压喷射灌浆在适用性方面具有很大优势。

In dangerous situation of leakage from embankment,the high pressure jet grouting is mainly applied to deal with the initial risk or the risk-elimination and strengthening for the dangerous section of embankment; for which various combinations of the high pressure jet grouting can be taken into account according to the various geological conditions therein,i. e.（ 1） the double barrel jet grouting method;（ 2） the method of high pressure swing spray grouting with straight-line lapping;（ 3） the method of high pressure swing spray grouting with broken-line lapping,etc. It is demonstrated through practice that the high pressure jet grouting has a large advantage in the aspect of adaptability,if compared with the other anti-seepage measures for the soft foundation.