Ecological restoration method for abandoned mine

Abstract

The invention relates to an ecological restoration method for an abandoned mine, and belongs to the technical field of abandoned mine restoration. According to the ecological restoration method for the abandoned mine, the abandoned mine area is studied, deep pit distribution of the whole abandoned mine is determined, and then stone and sand backfilling is conducted on deep pits; then when the depth is smaller than 5 meters, a physical adsorbent, bioactive bacteria and a chemical adsorbent are put in sequence, then 22 kg of a soil remediation agent is evenly spread in each square meter of the abandoned mine area, then the soil is turned over, and the soil remediation agent is evenly mixed with the soil with the depth being 0.5 meter; and finally, performing three-year ecological modification on the soil by planting turfs and trees. In a word, the ecological restoration method for the abandoned mine is reasonable in structural design, the ecological restoration cost of the abandoned mine is low, and the abandoned mine can be effectively and ecologically restored.

Description

Technical Field

[0001] The invention relates to an ecological restoration method for abandoned mines, belonging to the technical field of abandoned mine restoration. Background Art

[0002] At present, my country is in the industrialization period, and mineral resources have become an important material basis for my country's economic development. However, with the mining and utilization of minerals, environmental pollution has become more and more serious, and there are more and more abandoned mines. Nowadays, the ecological management of mining areas tends to use plant adsorption methods, planting resistant plants such as golden grass and willow leaf sedge in the mine soil, so that they can absorb some heavy metals and green the environment. However, if the plants are not handled properly, secondary pollution may occur, which is not conducive to the rapid restoration of abandoned mines. Summary of the invention

[0003] In order to overcome the defects in the background technology, the technical solution adopted by the present invention to solve the technical problem is: an ecological restoration method for abandoned mines, characterized in that the steps are: Step 1: Conduct a survey of the abandoned mine area to determine the distribution of deep pits in the entire abandoned mine; Step 2: Backfill the deep pits with a depth of more than 10 meters. The backfilling materials can be water, stone or sand. All deep pits in abandoned mines are backfilled to within 10 meters; Step 3: For a pit less than 10 meters deep in the abandoned mine area, add a physical adsorbent, a biologically active bacteria and a chemical adsorbent in order, so that the depth of the pit is less than 5 meters; Step 4: For deep pits with a depth of less than 5 meters in the abandoned mining area, fill them with soil for later use; Step 5, evenly spread 20-25 kg of soil remediation agent per square meter of the abandoned mining area, and then turn the soil to a depth of 0.5 meters, so that the soil remediation agent is evenly mixed with the soil at a depth of 0.5 meters; Step 6: Plant turf and trees in the leveled abandoned mining area at intervals for 3 years to allow the soil to complete its own ecological restoration.

[0004] The preferred soil remediation agent is composed of the following components in parts by weight: 200 to 260 parts of agricultural and forestry waste, 30 to 40 parts of sludge, 2 to 5 parts of fly larvae chitin, 1 to 5 parts of photosynthetic bacteria, 2 to 3 parts of phosphorus and potassium decomposing bacteria, 50 to 60 parts of livestock and poultry manure, and 5 to 15 parts of zeolite.

[0005] The preferred soil remediation agent is composed of the following components in parts by weight: 200 to 250 parts of agricultural and forestry waste, 30 to 35 parts of sludge, 2 to 5 parts of fly larvae chitin, 1 to 5 parts of photosynthetic bacteria, 2 to 3 parts of phosphorus and potassium decomposing bacteria, 50 to 60 parts of livestock and poultry manure, and 5 to 15 parts of zeolite.

[0006] The preferred soil remediation agent is composed of the following components in parts by weight: 230 to 250 parts of agricultural and forestry waste, 32 to 35 parts of sludge, 2 to 5 parts of fly larvae chitin, 1 to 4 parts of photosynthetic bacteria, 2 to 3 parts of phosphorus and potassium decomposing bacteria, 50 to 55 parts of livestock and poultry manure, and 5 to 10 parts of zeolite.

[0007] The preferred soil remediation agent is composed of the following components in parts by weight: 240 parts of agricultural and forestry waste, 33 parts of sludge, 3 parts of fly larvae chitin, 3 parts of photosynthetic bacteria, 2 parts of phosphorus and potassium decomposing bacteria, 52 parts of livestock and poultry manure, and 8 parts of zeolite.

[0008] Preferably, the depth of soil turning in step 5 is 0.4 meters.

[0009] Preferably, in step 5, 20-23 kg of soil remediation agent is evenly spread per square meter of the abandoned mining area.

[0010] Preferably, in step 5, 22 kg of soil remediation agent is evenly spread on each square meter of the abandoned mining area.

[0011] The present invention designs an ecological restoration method for abandoned mines. The method for ecological restoration of abandoned mines conducts a survey of the abandoned mine area to determine the distribution of deep pits in the entire abandoned mine, and then backfills the deep pits with stones and sand; then when the depth is less than 5 meters, physical adsorbents, biologically active bacteria and chemical adsorbents are sequentially added in order, and then 22 kilograms of soil restoration agent is evenly spread in each square meter of the abandoned mine area, and then the soil is turned over so that the soil restoration agent is evenly mixed with the soil at a depth of 0.5 meters, and finally the soil is ecologically modified for a period of 3 years by planting turf and trees. In short, the ecological restoration method for abandoned mines has a reasonable structural design, and the cost of ecological restoration of abandoned mines is low, so that abandoned mines can be effectively ecologically restored. DETAILED DESCRIPTION

[0012] Specific embodiment 1, an ecological restoration method for abandoned mines, characterized in that the steps are: Step 1: Conduct a survey of the abandoned mine area to determine the distribution of deep pits in the entire abandoned mine; Step 2: Backfill the deep pits with a depth of more than 10 meters. The backfilling materials can be water, stone or sand. All deep pits in abandoned mines are backfilled to within 10 meters; Step 3: For a pit less than 10 meters deep in the abandoned mine area, add a physical adsorbent, a biologically active bacteria and a chemical adsorbent in order, so that the depth of the pit is less than 5 meters; Step 4: For deep pits with a depth of less than 5 meters in the abandoned mining area, fill them with soil for later use; Step 5, evenly spread 22 kg of soil remediation agent per square meter of the abandoned mining area, and then turn the soil to a depth of 0.5 meters, so that the soil remediation agent is evenly mixed with the soil at a depth of 0.5 meters; Step 6: Plant turf and trees in the leveled abandoned mining area at intervals for 3 years to allow the soil to complete its own ecological restoration.

[0013] The soil remediation agent is composed of the following components in parts by weight: 240 parts of agricultural and forestry waste, 33 parts of sludge, 3 parts of fly larvae chitin, 3 parts of photosynthetic bacteria, 2 parts of phosphorus and potassium decomposing bacteria, 52 parts of livestock and poultry manure, and 8 parts of zeolite.

[0014] The present invention designs an ecological restoration method for abandoned mines. The method for ecological restoration of abandoned mines conducts a survey of the abandoned mine area to determine the distribution of deep pits in the entire abandoned mine, and then backfills the deep pits with stones and sand; then when the depth is less than 5 meters, physical adsorbents, biologically active bacteria and chemical adsorbents are sequentially added in order, and then 22 kilograms of soil restoration agent is evenly spread in each square meter of the abandoned mine area, and then the soil is turned over so that the soil restoration agent is evenly mixed with the soil at a depth of 0.5 meters, and finally the soil is ecologically modified for a period of 3 years by planting turf and trees. In short, the ecological restoration method for abandoned mines has a reasonable structural design, and the cost of ecological restoration of abandoned mines is low, so that abandoned mines can be effectively ecologically restored.

[0015] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for ecological restoration of abandoned mines, characterized in that The steps are: Step 1: Conduct a survey of the abandoned mine area to determine the distribution of deep pits in the entire abandoned mine; Step 2: Backfill the deep pits with a depth of more than 10 meters. The backfilling materials can be water, stone or sand. All deep pits in abandoned mines are backfilled to within 10 meters; Step 3: For a pit less than 10 meters deep in the abandoned mine area, add a physical adsorbent, a biologically active bacteria and a chemical adsorbent in order, so that the depth of the pit is less than 5 meters; Step 4: For deep pits with a depth of less than 5 meters in the abandoned mining area, fill them with soil for later use; Step 5, evenly spread 20-25 kg of soil remediation agent per square meter of the abandoned mining area, and then turn the soil to a depth of 0.5 meters, so that the soil remediation agent is evenly mixed with the soil at a depth of 0.5 meters; Step 6: Plant turf and trees in the leveled abandoned mining area at intervals for 3 years to allow the soil to complete its own ecological restoration.

2. The method for ecological restoration of abandoned mines according to claim 1, characterized in that: The soil remediation agent is composed of the following components in parts by weight: 200 to 260 parts of agricultural and forestry waste, 30 to 40 parts of sludge, 2 to 5 parts of fly larvae chitin, 1 to 5 parts of photosynthetic bacteria, 2 to 3 parts of phosphorus and potassium decomposing bacteria, 50 to 60 parts of livestock and poultry manure, and 5 to 15 parts of zeolite.

3. The method for ecological restoration of abandoned mines according to claim 2, characterized in that: The soil remediation agent is composed of the following components in parts by weight: 200-250 parts of agricultural and forestry waste, 30-35 parts of sludge, 2-5 parts of fly larvae chitin, 1-5 parts of photosynthetic bacteria, 2-3 parts of phosphorus and potassium decomposing bacteria, 50-60 parts of livestock and poultry manure, and 5-15 parts of zeolite.

4. The method for ecological restoration of abandoned mines according to claim 3, characterized in that: The soil remediation agent is composed of the following components in parts by weight: 230 to 250 parts of agricultural and forestry waste, 32 to 35 parts of sludge, 2 to 5 parts of fly larvae chitin, 1 to 4 parts of photosynthetic bacteria, 2 to 3 parts of phosphorus and potassium decomposing bacteria, 50 to 55 parts of livestock and poultry manure, and 5 to 10 parts of zeolite.

5. The method for ecological restoration of abandoned mines according to claim 4, characterized in that: The soil remediation agent is composed of the following components in parts by weight: 240 parts of agricultural and forestry waste, 33 parts of sludge, 3 parts of fly larvae chitin, 3 parts of photosynthetic bacteria, 2 parts of phosphorus and potassium decomposing bacteria, 52 parts of livestock and poultry manure, and 8 parts of zeolite.

6. The method for ecological restoration of abandoned mines according to claim 1, characterized in that: The depth of soil turning in step 5 is 0.4 meters.

7. The method for ecological restoration of abandoned mines according to claim 6, characterized in that: In the step 5, 20-23 kg of soil remediation agent is evenly spread in each square meter of the abandoned mining area.

8. The method for ecological restoration of abandoned mines according to claim 6, characterized in that: In the step 5, 22 kg of soil remediation agent is evenly spread in each square meter of the abandoned mining area.