Site selection is a key step in the early stage of quarry investment, which is directly related to the transportation cost, environmental protection acceptance and sustainable and stable production. If the quarry site is not well selected, especially if the safety distance is not up to standard, it may cause complaints from the public and bring troubles to the project. So, what are the rules for site selection? What should we pay attention to?

Principle of quarry site selection

According to industry experience, quarry site selection generally follows several main principles:

1. Convenient road traffic conditions, convenient use of electricity and water;

2. In order to reduce the pollution, the downwind of the dominant wind should be chosen;

3. The safety distance between quarries and blasting sites, residential areas, power facilities, roads, and natural gas and oil pipelines shall comply with local standards.

01 quarry site selection.

1.1 choose the place as far away as possible from high-voltage lines, communication lines and villages to avoid unnecessary safety hazards.

1.2 the integrity and stability of mountain and river bank should be considered for the plant site close to mountains and rivers. According to the ground elevation of the site such as regional meteorology and hydrology, the shutdown, relocation and even casualties caused by meteorological and hydrological changes should be avoided.

1.3 the warehouse for storage of gunpowder blasting equipment shall be built in a place free from mountain torrents, landslides and underground water activities. Irrelevant personnel are strictly prohibited from entering the reservoir area, smoking and using fire in the reservoir area, and inflammable and explosive materials are strictly prohibited to enter the reservoir area. A system for inspection and registration of explosives in and out of the warehouse shall be established.

Tips: according to the "blasting safety regulations", the safety distance of open-pit deep hole blasting blasting is based on the specific design, but not less than 200m! Order No. 39 of the State Administration of work safety clearly stipulates that if the distance between the quarry and the residential area is less than 300 meters, the work safety supervision and management department shall not review and accept the quarry.

2.1 the quarry site shall be located not far away from the power supply as far as possible, so as to reduce the power connection cost of the Department and the cost of using high-power generator set for power supply.

2.2 the quarry process equipment shall be arranged according to the terrain and area. The difference of high and low terrain in the site is reasonable. The equipment layout can be carried out by using the high-low drop, forming a flow line operation with greater advantages, reducing energy consumption, reducing labor intensity and improving labor productivity.

03 matters needing attention in quarry environmental protection.

3.1 in response to the implementation of environmental protection department policies, less occupation of arable land and less damage to vegetation. The equipment used in the production line should use equipment with "high efficiency, low energy consumption and meet the 3C" standard, and the dust removal equipment should be selected to prevent dust pollution to the environment.

3.2 for stone powder and other wastes, it can be used as raw materials for brick making. Safe storage and reasonable use of asphalt, coal powder, diesel oil and other raw materials. The waste oil should be collected during the installation, commissioning, maintenance and repair of machinery, and it is not allowed to dump it at will.

4.1 Investment: consider the sales of stone products

For the construction of crushing production line in large quarry, the investment is a large sum of money. It is necessary to buy all kinds of conveying equipment, crusher and other equipment. The return and recovery of these funds are the source and power for users to obtain the principal and economic profits. Therefore, it is necessary to investigate the sales of the crushed sand and stone materials. If the mineral type mined is not popular in the market and the market is not good, the investment will not be good It is a waste of investment, and makes the cost drift, the wireless period of the recovery cycle is extended, which is not conducive to the user's capital return. Therefore, it is suggested that when investing in the crushing production line of large quarry, the output stone market should be considered.

4.2 site selection: consider the location of mine origin

Selecting the right mine for mining is the reasonable site selection and construction. Generally, when selecting the site of crushing production line of large quarry, it must be close to the origin of materials, so as to facilitate transportation and save unnecessary expenses. In addition, during the site selection, it is necessary to find out which type of mine is mined and whether there is any risk. Therefore, it is suggested that the site selection of crushing production line in large quarry should Consider the location of the mine.

4.3 Construction: consider sand and gravel production site

After the site selection, the terrain and landform of the quarry should be considered. The quality of the production site and the environment will affect the layout of the production process of the quarry crushing production line and the embodiment of the relevant performance of the equipment. Therefore, the production line should be constructed at the place with natural slope as far as possible. Therefore, in the construction of large quarry crushing production line, it is very important to consider the sand and gravel production site.