Arrangement structure of ultrahigh outlet shaft and outlet adit of underground powerhouse

Abstract

The invention discloses an arrangement structure of an ultrahigh outlet shaft and an outlet adit of an underground powerhouse. The arrangement structure comprises the underground powerhouse and the outlet shaft which are connected through the outlet adit, and an elevator shaft and a shared front room are arranged in the middle area of the outlet shaft; a closed staircase, a staircase air supply shaft, a first shared front room air supply shaft, a middle-low voltage cable well and a middle-low voltage cable well air supply and exhaust shaft are arranged in the left side area of the outlet shaft; a high-voltage cable shaft, a high-voltage cable air supply shaft, a high-voltage cable smoke exhaust shaft and a second shared front room air supply shaft are arranged in the right side area of the outlet shaft; and buffering rooms are arranged between the shared front room and the high-voltage cable shaft and between the shared front room and the middle-low-voltage cable shaft. According to the technical scheme, the arrangement scheme of the ultrahigh outlet shaft and the outlet adit of the underground powerhouse can meet the requirements for cable arrangement, ventilation and smoke exhaust, fire fighting and safe evacuation; and small vehicles can pass through the outlet adit, so that personnel passing and equipment carrying are facilitated, and operation, maintenance and management are very convenient.

Description

technical field [0001] The invention relates to the field of shaft structures in water conservancy and hydropower projects, in particular to an arrangement structure of super-elevated outlet shafts and outlet flat holes of underground powerhouses. Background technique [0002] Hydropower stations, especially pumped storage power stations, widely use underground powerhouses as power generation buildings. The high-voltage cables of underground powerhouses need to be connected to the grid through outlet buildings to the ground. At present, common outlet buildings include outlet flat holes, outlet shafts and outlet inclined shafts. Due to the constraints of terrain and geological conditions, many hydropower stations use outlet shafts as outlet buildings. At present, the height of some outlet shafts reaches about 300m. The height of the shaft is large, which brings many challenges to cable layout, ventilation and smoke exhaust, fire safety evacuation, and operation management. ....

AI Technical Summary

Problems solved by technology

According to the current experience in the operation of underground powerhouses, the outlet shaft-outlet flat tunnel-underground factory building is the most frequently used route for operation and maintenance managers during the operation period. Inconvenient management

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