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采用高压定向喷射灌浆构筑防渗墙是我国近几年发展起来的一种新技术。其原理是利用喷射机具喷射出高压流体(气、水、浆),由它的强大动能冲切掺搅地层,与灌入的浆液混合构成防渗体,它具有设备简单,操作方便,施工速度快,造价低,防渗效果好等特点。我区为引进上述方法,结合进行沙那水库坝基防渗处理,从1985年起,由赤峰市水利队和巴林左旗打井队开展此项技术的引进
Using high-pressure directional jet grouting to construct cutoff wall is a new technology developed in recent years in our country. Its principle is to use jetting equipment to jet out high-pressure fluid (gas, water, slurry), punched by its strong kinetic energy to mix the formation and mix with the grout to form a seepage control body, which has the advantages of simple equipment, convenient operation and construction speed Fast, low cost, good seepage control and other characteristics. In order to introduce the above method, our district combined with the dam foundation anti-seepage treatment of Shana Reservoir. Since 1985, the introduction of this technology by the Chifeng Hydropower Corps and Bahrain Zuoqi well team