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Settlement control method based on twin-well combined type recharge

A settlement control, combined technology, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as aggravating ground and building settlement.

Active Publication Date: 2015-04-08
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this problem is not solved, the settlement of the ground and buildings will be aggravated after the recharge measures are adopted

Method used

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  • Settlement control method based on twin-well combined type recharge
  • Settlement control method based on twin-well combined type recharge
  • Settlement control method based on twin-well combined type recharge

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Embodiment Construction

[0031] First of all, the reasons for the subsidence of the ground outside the foundation pit and buildings due to periodic pumping in the conventional recharge method are introduced. figure 1 It is a schematic diagram of the water level distribution of the confined aquifer 4 under the cooperation of the main recharge well 1-1 and the depressurization well 3 in the foundation pit 2 in the conventional recharge method. The initial water level line 5-1 of the confined aquifer in the figure is the water level position of the confined aquifer 4 outside the pit in the natural state; The water level position of the confined aquifer 4 outside the pit after precipitation in the foundation pit 2. While the main reinjection well 1-1 and the depressurization well 3 cooperate to form a water level rise anti-funnel 6-1 around the main reinjection well 1-1, and the water level rise inverse funnel 6-1 describes the main reinjection well 1-1 The appearance of the water level of the surroundin...

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Abstract

The invention discloses a settlement control method based on twin-well combined type recharge. According to the method, an auxiliary recharge well is additionally arranged between a main recharge well and a protected building, a confined aquifer water level observation well is additionally arranged between the auxiliary recharge well and the protected building, and the auxiliary recharge well is opened when the main recharge wheel is in the lift water pumping process to relieve or avoid the situation that the water level, at the position of the protected building, of a confined aquifer greatly decreases due to lift water pumping of the main recharge well; the confined aquifer water level observation well is used for allowing people to dynamically observe the change of the water level, at the position of the protected building, of the confined aquifer and to dynamically regulate and control the auxiliary recharge well. By the adoption of the settlement control method, inevitable ground settlement and building settlement in the lift water pumping process of the main recharge well can be effectively relieved or avoided, lift time of the main recharge well can be shortened, and even underground water resources pumped by the main recharge well in the lift process can be reduced, and therefore environment friendliness is achieved.

Description

technical field [0001] The invention belongs to the field of foundation pit dewatering by using recharging to control ground subsidence, and more specifically relates to a subsidence control method for overcoming the ground and building subsidence problems caused by the recirculation pumping stage of a recharge well. Background technique [0002] During the excavation of the foundation pit, the problem of controlling the confined water is often encountered. It is common practice to use depressurization wells to depressurize confined aquifers. At the same time, in order to reduce the impact of precipitation in the pit on the environment outside the pit, water-proof curtains are often used to cut off the confined aquifer. However, as the excavation depth of the foundation pit increases, the confined aquifer that needs to be controlled becomes deeper and deeper. At this time, if the water-proof curtain is still used to cut it off, the depth of the water-proof curtain will reac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10
Inventor 郑刚曾超峰薛秀丽
Owner TIANJIN UNIV
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