Deep well dewatering device and operation method thereof

Abstract

The invention provides a deep well dewatering device and an operation method thereof. The deep well dewatering device comprises a dewatering well, an air extracting / injecting pipeline communicating with the dewatering well, a drainage pipe communicating with the dewatering well and an air extracting / injecting device arranged outside the dewatering well, wherein an underground water seepage deviceis arranged on the side wall of the dewatering well, a closed water collecting and draining device is arranged at the bottom of the dewatering well and communicates with the dewatering well through awater collecting one-way valve, one end of the air extracting / injecting pipeline is arranged in the water collecting and draining device, the other end of the air extracting / injecting pipeline is connected with the air extracting / injecting device, the air suction / injection pipeline communicates with the dewatering well through an air suction one-way valve, one end of the drainage pipe is arrangedat the bottom of the water collecting and draining device, the other end of the drainage pipe is arranged outside the dewatering well, and the air suction one-way valve is opened when the air suction / injection device sucks air and closed when the air is injected. By the adoption of the technical scheme, the underground water collecting and discharging efficiency can be improved.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a deep well dewatering device and an operating method thereof. Background technique [0002] At present, there are more and more underground projects such as expressway tunnels, subways, and underground pipe networks under construction and proposed in my country. These projects will inevitably pass through sections with complex hydrogeological conditions. Before the construction of underground projects, the groundwater seepage field is in a dynamic equilibrium. status. With the excavation of underground works and the formation of the air surface, groundwater will gather and seep to the air surface, forming water seepage at the excavation surface of underground engineering. If effective water collection and drainage measures are not taken, the seepage water from rock surface fissures will be drained to the ground In the drainage ditch of the project, water seepage accumulat...

AI Technical Summary

Problems solved by technology

However, due to the limited head of the water pump, it is impossible to pump water from deep wells; in addition, because the groundwater can only wait for the groundwater to slowly infiltrate into the precipitation well, the waiting time is long, resulting in poor drainage effect of the precipitation well

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