KR-20260067402-A - Equipment for restoring contaminated soil with obstruction

KR20260067402AKR 20260067402 AKR20260067402 AKR 20260067402AKR-20260067402-A

Abstract

The present invention relates to equipment for improving and restoring contaminated soil in farmland where obstacles remain. The restoration equipment according to the present invention is characterized by comprising: a small excavation equipment having a height of 2m or less, having a bucket for excavating soil and an arm to which the bucket is connected; a conveyor belt formed long from the front end to the rear end of the excavation equipment, capable of rotating in forward and reverse directions and transporting soil; a collection unit connected to the front end of the conveyor belt for temporarily receiving excavated soil; an input hopper connected to the rear end of the conveyor belt for supplying soil to the conveyor belt; and a stabilizer spraying unit having a spray gun installed on the arm for spraying a soil stabilizer, a supply line connected from the input hopper to the spray gun for supplying a soil stabilizer, and a transfer pump connected to the supply line.

Inventors

이상윤
정지윤
인현진
정우철
고주인
박제현

Assignees

한국광해광업공단

Dates

Publication Date: 20260513
Application Date: 20241104

Claims (9)

A small excavation device having a bucket for soil excavation and an arm to which the bucket is connected, with a height of 2m or less; A conveyor belt extending from the front end to the rear end of the above-mentioned excavation equipment, capable of rotating in forward and reverse directions and transporting soil; A collection unit connected to the front of the above conveyor belt to temporarily receive excavated soil; An input hopper connected to the rear end of the conveyor belt to supply soil to the conveyor belt; and Restoration equipment for contaminated soil in farmland retained by obstacles, characterized by comprising: a stabilizing agent spraying unit having a spray gun installed on the above arm for spraying a soil stabilizer, a supply line connected from the above input hopper to the above spray gun for supplying a soil stabilizer, and a transfer pump connected to the above supply line.
In paragraph 1, A soil restoration device for contaminated farmland with retained obstacles, characterized by being used to press a root protection device into the ground to protect tree roots using the power of the arm of the excavation equipment, and further comprising a clamp that is connected to the arm in replacement with the bucket and fixes the root protection device.
In paragraph 2, The above clamp is characterized by having a body part, a link part coupled to the body part and connected to the arm, and a clamp part coupled to the lower end of the body part and into which the root protector is fitted and fixed.
In paragraph 3, A device for restoring contaminated soil in farmland with retained obstacles, characterized in that the above-mentioned clamp part is coupled to the above-mentioned body part so as to be rotatable left and right in a planar direction.
In paragraph 3, The above root protection device is arranged in a circular shape, and Restoration equipment for contaminated soil in farmland retained of obstacles, characterized in that the above-mentioned clamp is formed in an arc shape so as to allow for the divided installation of the above-mentioned root protection device.
In paragraph 5, The above-mentioned root protection device is designed to surround and protect tree roots by connecting multiple blocking plates that are inserted into the ground. The above blocking plate is arranged lengthwise along the vertical direction and comprises a plate-shaped panel section having a triangular wedge portion formed at the bottom, and Restoration equipment for contaminated soil in farmland retained by obstacles, characterized by having a connecting member arranged lengthwise along the vertical direction on one side of the panel part to form a connecting groove into which an adjacent other panel part is fitted and joined.
In paragraph 1, A soil restoration device for contaminated farmland with retained obstacles, characterized by having a collection section at the front end of the excavation equipment that temporarily receives soil excavated by the bucket, is formed with a shape in which the front end is wide and the rear end becomes narrow, and is arranged to be inclined upward toward the rear end.
In paragraph 1, The above-mentioned excavation equipment is a restoration device for contaminated soil in farmland with retained obstacles, characterized by being moved by crawler tracks.
In paragraph 1, Restoration equipment for contaminated soil in farmland with retained obstacles, characterized in that the height of the above-mentioned excavation equipment is 1.5m or less.

Description

Equipment for restoring contaminated soil with obstruction The present invention relates to equipment capable of restoring contaminated soil while protecting obstacles, particularly when there are obstacles such as fruit trees within contaminated land, when carrying out a soil contamination restoration project. Due to mining development, the soil in mines and surrounding areas is frequently contaminated with heavy metals and other pollutants. Generally, soil contamination occurs as lost mineral tailings or contaminated mine drainage seeps into the land. Soil contamination also occurs in areas outside of mining regions, such as steel mills and industrial sites. Soil improvement and restoration methods for contaminated soil in mine remediation projects aimed at preventing mining damage are classified into soil improvement methods, which involve backfilling and soil replacement; solidification and stabilization methods, which restrict the mobility of heavy metals by mixing chemicals into the contaminated soil; and soil remediation methods, which remove pollutants from the soil. Soil improvement and restoration projects may apply soil improvement and stabilization methods together, or apply soil remediation methods. Generally, to apply stabilization and soil remediation methods, the soil from the contaminated site must be excavated and removed, or the soil must be excavated at the original site and mixed with chemicals (stabilizers). The problem is when it is difficult for excavation equipment to enter. In other words, in facility horticulture areas such as vinyl greenhouses or areas where low-height fruit trees are cultivated, such as orchards, there are height restrictions that prevent conventional excavators from entering. Additionally, when various equipment is required to excavate the soil and take measures to protect obstacles such as fruit trees, there was a problem where work could not be carried out smoothly due to the limited space. In soil improvement and restoration areas with spatial constraints and obstacles that need protection, restoration work must rely on manual labor, which leads to problems such as prolonged restoration times and increased restoration costs. FIGS. 1 and 2 are schematic perspective views of equipment for improving and restoring contaminated soil in farmland with retained obstacles according to an example of the present invention, viewed from one side and the other. Figure 3 is an enlarged perspective view of the clamper. Figure 4 is a perspective view of the bucket replaced with a clamp. FIG. 5 is a schematic perspective view of the clamper fixing the root guard. FIGS. 6 and FIGS. 7 are drawings for explaining a restoration process using a restoration device according to the present invention. Figures 8 to 11 are drawings illustrating the case of using a circular root protector. FIG. 12 is a schematic photograph of a restoration device actually manufactured according to the present invention, and FIG. 13 is a photograph of a conventional agricultural excavator for comparison. ※ It should be noted that the attached drawings are provided as examples for reference to help understand the technical concept of the present invention, and the scope of the rights of the present invention is not limited by them. In describing the present invention, detailed descriptions of related known functions are omitted if they are deemed obvious to a person skilled in the art and could unnecessarily obscure the essence of the invention. The present invention relates to equipment for improving and restoring contaminated soil in agricultural land within mining areas, specifically designed for use in confined spaces or areas where height restrictions make it difficult for general excavation equipment to enter. However, it should be noted in advance that the present invention is not limited to contaminated land in mining areas but can be used in contaminated land in various other areas, such as steel mills and industrial zones. In this specification, the application is described using examples of contaminated land near mines, particularly in facility horticulture areas with vinyl greenhouses or areas where low-height trees, such as fruit trees, are cultivated. When restoring contaminated land near a mining area, as described in the prior art, the contaminated soil is first excavated and removed, followed by purification (soil washing, thermal desorption, etc.), or excavated at the original site and mixed with chemicals (stabilizers). The soil that has been improved and restored (hereinafter referred to as "restored soil") may be returned to its original location or backfilled onto other land. Excavation equipment such as excavators is mobilized to excavate contaminated soil, but conventional excavators have difficulty entering narrow spaces such as inside greenhouses or orchards. The present invention modifies the existing excavation equipment by lowering the height of the device and narrowing the wi