In recent years, with the industrialization and the update of trenchless mechanical equipment such as HDD Machine, the urbanization process has advanced, and the development and utilization of urban underground space in China has entered a stage of rapid growth. The average growth rate reached more than 20%, and about 60% of the existing underground space was completed during the “second five” period. Incomplete statistics, the proportion of ground construction area in the ground space period increased from about 10% to 15, and its population and economic In a city with a high concentration of activities, driven by rail transit and comprehensive construction of the ground and underground, the scale of urban underground space development has grown rapidly, and the demand for power is full.
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