For the first application of water jet technology in multi - ring hole reaming and on the basis of the laboratory simulation test deep discussion was made and specific technical parameters were determined . the engineering practice has proved its feasibility 首次將水射流技術(shù)應(yīng)用到多環(huán)擴(kuò)孔施工中,在實(shí)驗(yàn)室模擬試驗(yàn)的基礎(chǔ)上對(duì)其進(jìn)行了深入的探討,并確定了具體的設(shè)計(jì)參數(shù),工程實(shí)踐證明該方法是可行的。