Tracking and monitoring well of landfill anti-seepage system and its arrangement method

Abstract

The invention discloses a tracking monitoring well for an anti-seepage system in a landfill and an arrangement method thereof. The arrangement method includes drilling a monitoring well hole and burying a monitoring well. Monitoring well hole drilling steps: Drill a number of X-shaped staggered monitoring well hole groups outside the outline of the landfill, set a section of cylindrical wire mesh on a section of conduit, and the diameter of the conduit is smaller than the monitoring well hole; Insert a section of the inner tube concentrically into the catheter, and the surface of the inner tube is provided with a flow hole; put the cylindrical wire mesh, the catheter, and the inner tube together into the well hole of the monitoring well; Pour pebbles into the ring-shaped outer filling layer, and fill the section close to the surface with an annular air bag instead of pebbles. The lowest point of the annular air bag is more than 1 meter lower than the lowest water level of the local surface water; from the surface to the inner and inner pipes Sand and gravel are poured outside to form the inner filling layer, and the conduit is pulled out during the pouring process until the inner filling layer is filled to the surface; a leakage sensor is placed in the inner pipe.

Description

technical field [0001] The invention relates to the field of anti-seepage and leak detection methods for landfill sites, in particular to a tracking and monitoring well for an anti-seepage system in a landfill site and an arrangement method thereof. Background technique [0002] In social production, the output of garbage is getting higher and higher. Among the garbage disposal methods, landfill accounts for a large proportion. The secondary pollution caused by the leakage of the garbage landfill will endanger the surrounding soil and groundwater. Among the types of garbage, there are hazardous wastes. The pollution of this kind of garbage needs to be strictly controlled, otherwise it will cause great harm to the environment and people. [0003] Garbage often produces waste liquid after landfill, and the waste liquid leaks into the soil after passing through the anti-seepage layer, causing great harm. Therefore, anti-seepage detection is required. The detection methods inclu...

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Problems solved by technology

[0004] In the prior art, the monitoring well generally imitates the structure of the conventional groundwater monitoring well, a section of vertical well, and the liquid in the surrounding soil flows into the well and is detected. This setting method has several problems: 1. The coverage in the horizontal direction is small, and a The monitoring well can only monitor a small area nearby. In order to complete the monitoring, many monitoring wells need to be set up; 2. It is not convenient to determine the location of the leak, and it is necessary to obtain the location of the leak through auxiliary leak detection means, or landfill the site after the leak occurs. 3. Surface water will flow from the surface soil into the monitoring well and affect the monitoring structure

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