Monitoring time and requirements?

(1) Dynamic monitoring: the monitoring time is not less than one hydrological year, and it is monitored every 3-5 days on average. If the special section is close to rivers, lakes and canals, the monitoring frequency should be increased. When the monitoring site is large, the monitoring time and date of each hole should be unified as much as possible to facilitate the comparative utilization of data.

(2) Water pressure monitoring: The observation period of pore water pressure should be based on the principle of controlling the change of pore water pressure. When the pore water pressure changes greatly, the observation period should be shortened; When the pore water pressure changes little, the observation period can be extended appropriately.

When the pore water pressure changes during the construction period, which may affect the stability of the building, the monitoring can only be stopped after the construction is completed or the pore water pressure drops to a certain safe value; When the buoyancy of local launching affects the construction project, the pore water pressure should be monitored until the buoyancy can be eliminated.

(3) Water quality monitoring: not less than 4 times a year, and not less than 1 time in wet season and dry season respectively.

(4) At the same time of monitoring, local hydrological and meteorological data should be collected, such as precipitation, evaporation, surface water level, water quality and quantity, and the relationship with groundwater recharge and discharge. Understand the environmental geology and whether there are pollution sources.

(5) When using chemical analysis method to monitor water quality, the sampling times should not be less than 4 times a year, and relevant projects should be analyzed.

For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd