Method of refill spent mining field using city solid garbage

A solid waste, urban technology, applied in the field of comprehensive environmental management, can solve problems such as high operating costs, high operating costs, and complex processes

Inactive Publication Date: 2004-03-03
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Judging from the current situation, due to the large one-time investment of incineration to build a plant, the high operating cost, the low fertilizer efficiency of composted fertilizers, and the great harm of dioxins and residual substances, countries around the world use incineration and composting to treat them. Garbage is less than 15% of the total amount of garbage generated, and a large amount of domestic garbage is still disposed of by landfill or exposed stacking; in the face of the increasingly serious problem of abandoned stopes, the commonly used treatment methods: in addition to effective filling (replacement) In addition to mining method

Method used

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Embodiment Construction

[0006] The implementation of the inventive method comprises the following steps:

[0007] 1. Sorting and crushing: After the collected garbage is sorted and recycled by the sorting device, the remaining garbage is divided into organic and inorganic according to its properties, and then crushed and squeezed and dehydrated by crushing equipment , the diameter of the crushed and dehydrated garbage (particles) is ≤2.0cm; the water content is ≤20%.

[0008] The purpose of implementing this step is to turn the garbage into granular objects with a diameter of ≤2.0cm and a water content of ≤20%, so as to facilitate compression, packaging and recycling.

[0009] 2. Compression packaging: add an appropriate amount of adhesive (clay, etc.) Rectangular or square blocks of drainage holes, the diameter of the exhaust and drainage holes is ≥1.0cm, and the density is ≥20 holes / m 3 , block volume ≥ 0.05m 3 , density ≥ 700kg / m 3 , Internal friction angle φ value ≥ 15 °, cohesion C value ≥ 4...

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Abstract

A method for using the solid garbage coming from city to fill the rejected mining pit includes such steps as classifying, pulverizing, dewatering, compressing to become blocks, stacking in said rejected mining pit which has been pretreated, and covering with soil.

Description

technical field [0001] The invention belongs to methods and technologies for comprehensive environmental management, in particular to a method for backfilling abandoned mining sites with urban solid waste. Background technique [0002] As we all know, urban garbage is a major public hazard that damages the quality of the urban environment, endangers the physical and mental health of residents, and hinders the sustainable and coordinated development of the social economy and the ecological environment; Collapse, rock formation and surface movement, cracking and subsidence are a major disaster that endangers industrial and agricultural production and the safety of people's lives and properties. Facing the ever-increasing and increasingly serious urban waste hazards, the conventional solution is to effectively control the source of waste generation, promote the classified recovery of renewable resources in waste, convert and utilize potential resources ...

Claims

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Application Information

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IPC IPC(8): B09B1/00B09B3/00
CPCY02W30/30
Inventor 谷志孟吴文
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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