Deep-buried tunnel underground water layered hydraulic connection monitoring system and implementation method

The invention provides a layered hydraulic connection monitoring system for underground water of a deep-buried tunnel and an implementation method. The external water pressure of different stratums above the deeply-buried tunnel is monitored through the earth surface deep hole, and an osmotic pressure monitoring instrument, a monitoring section and a plugging section which are arranged in the earth surface deep hole. The specific construction method comprises the following steps: determining the position, depth and aperture of the earth surface deep hole, and drilling the earth surface deep hole; determining a layered monitoring scheme; determining the material consumption of each monitoring section and plugging section of the earth surface deep hole; monitoring schemes are implemented from bottom to top in a layered manner, such as arrangement of in-hole osmotic pressure monitoring instruments and formation of monitoring sections and plugging sections; and automatic monitoring, and receipt and uploading of m