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一前言陕西省石头河工程是以灌溉为主的综合性的水力枢纽,由105米高的土石混合坝,泄流量 Q=7150立米/秒的溢洪道,泄洪洞和输水发电洞组成。石头河泄洪洞是继刘家峡水电站泄洪洞、碧口水电站泄洪洞之后修建的国内第三个龙抬头式的泄洪洞。进口为压力孔口,装有5.5×6.0米~2的事故检修门和5.0×5.5平米的弧形工作门。弧形门后为明流洞,闸底槛以上的水头66米,闸底槛至反弧末端的落差27.247米,总落差93.247米。闸门全开时的最
I. INTRODUCTION Shaanxi Shitou River Project is an integrated irrigation hub and consists of a 105-meter-high earth-rock mixing dam, a spillway with a discharge capacity of Q = 7,150 m / s, a flood discharge tunnel and a power transmission tunnel. Stone River flood hole is following the Liujiaxia Hydropower Station spillway tunnel, Bikou hydropower station after the spillway tunnel built in the country’s third dragon-headed spillway tunnel. Imports for the pressure orifice, equipped with 5.5 × 6.0 m ~ 2 accident repair door and 5.0 × 5.5 square meters arc work gate. Behind the arc-shaped door is the Mingliu, 66 meters above the gate at the sluice threshold, 27.247 meters at the sluice threshold to the opposite end of the arc, with a total drop of 93.247 meters. When the gate is fully open