Seeing mine geological engineering from mine safety

Mine geological work is an indispensable basic technical work in mining. It refers to the geological work directly for production in the production area or mining area of ​​the deposit in the mining process, according to the needs of the mine work. The geological work of the mine geological work Based on the project of mine mining activities, it is the technical basis and basis for mining production and management activities. The mining activities must be moved with the advancement of mining operations. There is no fixed working space and place, and the working environment conditions are greatly affected by engineering geology and hydrogeological conditions. Therefore, in order to ensure the smooth progress of mining activities, it is necessary to understand the impact of mine geological structure, hydrogeology and rock properties on mine safety.

Geological data is the basis for mine design, construction and production. Its completeness and reliability are directly related to the construction and production of mining enterprises, and directly affect the economic benefits and safe production of mining enterprises. If there is no reliable geological data and understanding of the integrity of the deposit, blindly stopping the horse will cause huge economic losses and major personal injury and death. Therefore, the mine should be designed with systematic and complete geological data. According to the needs of technical economy and safe production, engineering geological data should include the following.

First , the mining environment

Including the location of the mining area and major traffic conditions, natural geography and meteorological characteristics, economic profile and power sources.

Second , regional geological aspects

Including regional geological structural features, the location of the deposit in the regional tectonic unit.

3. Geological structure of the mining area and characteristics of the deposit

    (1) Stratigraphic and rock composition of the mining area, the nature and distribution of the fold and fault structure and its influence on the occurrence of the ore body; the nature and scale of the larger fault, fracture zone, landslide and debris flow.

(2) Ore body occurrence, scale and burial conditions, ore body thickness and its trend along the trend, inclination, ore body dip and its changes, ore body exposure and its burial depth.

(3) The surrounding rock properties of the upper and lower plates and their contact with the ore body, the thickness of the surface loose sediment and its coverage.

(4) The internal structure of the ore body, the existence of the waste rock interlayer and inclusions and their types, occurrences, thickness, distribution and quantity.

Fourth , the quality characteristics of ore

Including the main and minor mineral components of ore, ore structure; the industrial grade of ore and its spatial distribution; the analysis of ore combination and its chemical analysis, as well as the evaluation and narration of beneficial or harmful components in minerals; The economic value of industrial mining.

5. Physical and mechanical properties of ore and surrounding rock and mining technical conditions

For building materials and stone mines, the compressive strength, hardness coefficient, looseness coefficient of ore and surrounding rock, as well as the fracture and joint development of surrounding rock and ore body and the stability of rock should be determined.

6. Hydrogeological conditions of the deposit

Including lithology, layer thickness, and occurrence of aquifers and aquifers; hydraulic connections between surface waters and groundwaters between aquifers; phreatic water levels, water quality, water volume and flow direction; surface water flow systems and related water conservancy The hydrophobic capacity of the project, as well as the local precipitation and the highest flood level in the past years; the small mines, old wells, old goafs in the mining area, the aquifers in the existing production mines, water content, karst belts, and geological re-election.

Seven , ore reserves calculation data

Including the selection and basis of reserves calculation method, the determination of various parameters in the calculation of reserves and its numerical value, the spatial distribution of reserves at all levels, and the calculation results of reserves.

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