CAJ | 학술논문

阳江抽水蓄能电站高压岔管拟采用钢筋混凝土衬砌，其静水压力799 m为国内之最。为保证在高水头作用下围岩的渗透稳定，采用三维有限元方法，针对阳江抽水蓄能电站高压水道防渗排水系统进行渗流及渗透稳定研究。研究结果表明，高压隧洞渗漏量在合理范围，高压固结灌浆、防渗帷幕和排水系统等防渗排水措施设计合理，效果显著。渗透稳定性方面，断层f 708与排水廊道相交处渗透坡降较大，发生渗透破坏的可能性较大，需重点处理。通过高压隧洞内水外渗三维有限元分析与渗透稳定性的研究，使得处理措施更具针对性。
양강추수축능전참고압차관의채용강근혼응토츤체，기정수압력799 m위국내지최。위보증재고수두작용하위암적삼투은정，채용삼유유한원방법，침대양강추수축능전참고압수도방삼배수계통진행삼류급삼투은정연구。연구결과표명，고압수동삼루량재합리범위，고압고결관장、방삼유막화배수계통등방삼배수조시설계합리，효과현저。삼투은정성방면，단층f 708여배수랑도상교처삼투파강교대，발생삼투파배적가능성교대，수중점처리。통과고압수동내수외삼삼유유한원분석여삼투은정성적연구，사득처리조시경구침대성。
For the high pressure bifurcated pipes of Yangjiang pumped storage power station ,reinforced concrete lining scheme is to be adopted .The static water pressure is 799 m ,which is the highest in China .In order to maintain the sta-bility of the surrounding rock under high water pressure ,3D finite element method was adopted to investigate seepage and infiltration stability of the high pressure drainage pipe system of this power station .Firstly the seepage prevention and drainage system layout scheme of this power station was introduced ,followed by the introduction of the seepage 3D finite element calculation theory ,based on which the study was carried out .The study results indicate that the seepage dis-charge is within a rational range ,and the layout scheme of seepage prevention and drainage system of the high pressure tunnels is suitable and obviously effective .For the aspect of seepage and infiltration stability ,the seepage gradient value in the intersection region of f708 and the drainage gallery is relatively big .The possibility of hydraulic failure in this re-gion is imminent ,and it is necessary to take prevention measures .With the help of the 3D finite element analysis and the study on seepage stability of the high pressure tunnels of this power station ,the handling actions will be more targeted .