Inner mold for filling mine

Abstract

An inner mold for mine filling, which belongs to the filling inner mold of the concrete filling layer in the goaf of the mine. It mainly solves the technical defects of mine filling such as high filling cost and long construction period, and is used for the harmless treatment of urban garbage. Provide a new way. The main points of the technical solution are: the inner mold (3) includes an inner core (2) and an outer cladding layer (1), and the inner core (2) is pressed or extruded from solid waste materials and then wrapped and outsourced The cladding (1) forms an inner mold (3), and the inner mold (3) is filled in concrete (5) to form an inner mold (6) for mine filling to fill the mine. It is mainly used in the concrete structure of goaf filling and mining filling, which can greatly reduce the cost of mine filling and improve the filling efficiency. The inner core is made of urban waste, which can effectively solve the problem of harmless treatment of urban waste and improve the efficiency of filling. The mining rate of minerals is of great significance to protect the ecological environment.

Description

technical field [0001] The invention relates to an inner mold for mine filling. Background technique [0002] Garbage is inevitable in people's life. If it cannot be disposed of in time, a large amount of garbage will be randomly piled up and hoarded for a long time, which will occupy the land, produce odor, cause serious pollution to the atmosphere, water and soil, and lead to the breeding of flies, insects and rodents, threatening the health of residents. Therefore, garbage is a big burden on the city. The current treatment methods are incineration, composting, and landfill. It is not easy to dispose of garbage. The following points can be summarized: First, the average composition of garbage is complex, and incineration pollutes the environment. The current scientific incineration treatment method is centralized closed incineration for power generation, but domestic garbage has high moisture content and complex components. Impurities are difficult to burn out, and it is...

AI Technical Summary

Problems solved by technology

It is not easy to dispose of garbage. The following points can be summarized: First, the average composition of garbage is complex, and incineration pollutes the environment. The current scientific incineration treatment method is centralized closed incineration for power generation, but domestic garbage has high moisture content and complex components. Impurities are difficult to burn out, and it is necessary to remove water and add a large amount of other fuels to support combustion. The cost of power generation is high, and state support is required all year round.

Second, using this kind of garbage to fertilize will easily cause the land to become ballasted

Third, landfill requires a large area of ​​land. It has been found that burying garbage in the ground will damage the groundwater, so it cannot be filled at will

For underground mining, a large area of ​​goaf is formed underground, and the rock strata above the goaf cannot be effectively supported, resulting in subsidence. As time goes by, the surface also subsides, forming a subsidence area, resulting in the relocation of residents. Houses, farmland and roads etc. were destroyed, seriously affecting the environment

[0004] At present, there are mainly two types of goaf filling materials: 1) Mixing cementitious materials and filling materials (soil, tailings, sand, and gravel, etc.) to form a homogeneous, high-fluidity mixed slurry 2) Prepare the curing agent and filler into a paste-like mortar. Using the above-mentioned technology, due to the large water content of the mixture slurry, the formed solidified body has large porosity and low compressive strength; the amount of curing agent is large, increase the cost

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