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广蓄电站无钢衬钢筋砼高压岔管，主管长６２．８４５ｍ，洞径由８ｍ变至３．５ｍ，４个支管．岔管承受的最大静水头６１０ｍ，最大动水头７２５ｍ．施工开挖采用常规钻爆法，控制爆破效果良好，炮眼残留率９８％，断面优良率９３．７５％；钢筋、混凝土施工质量良好；岔管高压固结灌浆，最高灌浆压力达６．５ＭＰａ．完工后进行充水试验，最高水位为８０２．２ｍ高程，高压岔管承受的内水压力为５９７．２ｍ水头，１００小时稳压后总渗漏量小于４０Ｌ／ｍｉｎ，结论高压岔管施工质量良好．
There are no steel-lined steel-reinforced concrete high-pressure bifurcation pipes in Guangyue Power Station, with a chief length of 62.845m and a diameter of 8m to 3.5m with four branch pipes. Bifurcation to withstand the largest static head 610m, the maximum moving head 725m. The conventional drilling and blasting method is adopted for excavation. The control blasting effect is good. The residual rate of blast hole is 98% and the excellent and good rate of section is 93.75%. The construction quality of steel bar and concrete is good. The bifurcated high-pressure consolidation grouting has the maximum grouting pressure of 6.5MPa. After completion of the water filling test, the maximum water level of 802.2m elevation, high-pressure bifurcation of the internal water pressure of 597.2m head, 100 hours after the total pressure regulator less than 40L / min, Conclusion High-quality bifurcated construction of good quality .