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Safe mining method and mining structure of a valley-type domestic waste landfill

A technology for domestic waste and mining methods, which is applied in infrastructure engineering, excavation, roads, etc. to achieve the effects of improving efficiency, transportation safety, good durability, and low engineering cost.

Active Publication Date: 2021-03-02
NANJING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Further aiming at the problem of drainage during mining, combined with the above-mentioned mining structure, the drainage is improved by partition, classification and series connection;

Method used

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  • Safe mining method and mining structure of a valley-type domestic waste landfill
  • Safe mining method and mining structure of a valley-type domestic waste landfill
  • Safe mining method and mining structure of a valley-type domestic waste landfill

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Embodiment 1

[0048] This embodiment provides a safe mining scheme for a valley-type domestic waste landfill. The safe mining plan for stabilized valley-type landfills with a landfill age of more than 10 years specifically includes four aspects: development and transportation, drainage, slope stabilization, and ventilation.

[0049] For valley-type domestic waste landfills, mining is carried out by adopting the excavation method of setback and indentation. The excavation method of setback and indentation is to build several layers of circular roads layer by layer from outside to inside, from high to low. Each layer The circular road is located on the same elevation plane, and the diameter of the circular road from top to bottom decreases layer by layer. Two adjacent circular roads are respectively connected by downlink and uplink ramps. The circular road is divided into an uplink section 120 and a downlink section 110 (such as figure 1 ), the descending section 110 and the descending ramp o...

Embodiment 2

[0055] This embodiment provides a safe mining scheme for a valley-type domestic waste landfill. The safe mining plan for valley-type landfills with a landfill age of 6-8 years includes five aspects: well drilling and exhaust, development and transportation, drainage, slope stability, and ventilation.

[0056] Domestic waste landfills with a landfill age of 6-8 years have basically stabilized, but there are still risks caused by the landfill gas containing a small amount of methane and other harmful components. The residual harmful substances in the waste dump are further released through well drilling and exhaust technology. Gas, mining operations can be carried out after the exhaust gas is detected to reach a safe level.

[0057] For valley-type domestic waste landfills, mining is carried out by adopting the excavation method of setback and indentation. The excavation method of setback and indentation is to build several layers of circular roads layer by layer from outside to...

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Abstract

The invention discloses a safe mining method and mining structure of a valley-type domestic garbage landfill, belonging to the field of solid waste resource utilization. The mining method includes four main technical units of development transportation, drainage, slope stability and ventilation, among which the development transportation technology adopts relatively independent upward and downward roads constructed by combining multi-layer circular horizontal roads combined with upward and downward connecting ramps; drainage technology adopts out-of-boundary The intercepting ditch discharges rainwater by gravity, and the pumping station in the boundary partitions and grades the discharge of sewage to the top for treatment and discharge after reaching the standard; the slope is stabilized by adopting the double slope protection technology of geogrid and ecological bag; the ventilation adopts a combination of natural guidance and artificial forced ventilation Technology. The safe and efficient reservoir area built by the safe mining method of the present invention develops transportation roads, and the stock garbage is transferred out from the mining position in time; further, through the improvement of drainage, slope stability and ventilation, the safety of landfill mining operations is fully guaranteed. proceed safely.

Description

technical field [0001] The invention relates to the field of resource utilization of solid waste, in particular to a safe mining method and mining structure of a valley-type domestic garbage landfill. Background technique [0002] my country's cities and towns produce about 200 million tons of domestic waste every year, of which more than 60% are disposed of by landfill technology. In addition, more than 8 billion tons of domestic waste have been landfilled over the years. The pollution situation is severe, a large amount of land is occupied, and the resource potential is huge. It is of great practical significance to solve the problem of domestic waste to use the "urban mine" technology to safely mine, effectively sort and classify the existing domestic waste. According to the different natural terrain conditions used in the landfill area, domestic waste landfills are roughly divided into three types: valley-type landfills, plain-type landfills, and tidal flat-type landfil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/00E02D17/20E01C1/00
CPCE01C1/00E02D17/00E02D17/20Y02A30/60
Inventor 吴军李俊韩诚罗培康朱俊伟张铁军陈欣琪陈东标杨智力李志远李丹阳肖升孙洪飞高洋薛王峰焦贯通王雨纯
Owner NANJING UNIV