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小浪底水电站尾水叉洞上接尾水管下接尾水明流洞，在电站系统中处于有压流向明流过渡的关键部位。2、4、6号尾水洞以90°角分别与1、3、5号尾水洞相交汇，构成复杂的三维空间结构，岔口处跨度达28．5m，叉洞间岩壁十分单薄，洞室稳定问题较为突出，钢筋混凝土衬砌的受力状态十分复杂。喷锚设计采用系统支护和顶拱预应力锚索，衬砌结构沿交汇线增设空间暗梁暗柱体系，以明确传力。该设计保证了洞内水流的顺畅和洞室的稳定。
Xiaolangdi Hydropower Station tail water fork tail hole next to the tail pipe water Mingyue Dong, in the power plant system in the pressure flow to the Ming and the key parts of the transition. Tailrace tunnels 2, 4, and 6 intersect with tailrace tunnels 1, 3 and 5 respectively at a 90 ° angle to form a complex three-dimensional spatial structure with a span of 28.5m at the fork, Cave stability problems are more prominent, reinforced concrete lining of the state is very complicated. Spray anchor design using the system of support and roof arch prestressed anchor, lining structure along the intersection line additional space dark beam dark column system, in order to clear force transfer. The design ensures the smooth flow of water and the stability of the chamber.