Reserve calculation method
(2) Geological block method
This is the method most widely used at present in the coal reserves in the calculation, as shown in FIG 2-8-12, which is a layer of coal with various elements divided into a plurality of different shapes and sizes of pieces, respectively, Calculate the reserve for each segment. The main factors that divide the block are the degree of geological research of the coal seam (such as different levels of division), the thickness of the coal seam, structural factors (such as faults, back-inclined axes, coal seam dip angle, different structural complexity, etc.), coal quality characteristics ( Such as the different brands of coal, ash, sulfur, etc.), mining technical conditions (such as ground temperature, hydrological conditions, content, different stripping ratio, etc.), development methods (such as different mining levels, points up and down the mountain, etc.).
Figure 2-8-12 Geological section method
When calculating reserves, the principle of dividing the ore body as a group of dense blocks of different sizes is that the indicators in each block are consistent or similar. The number of blocks is very different, and there are hundreds of pieces, and a few pieces, which are related to many factors such as the size of the exploration area. The size of each segment is also different. According to the requirements of the code, the division of the calculation block of coal reserves should generally be:
First, different levels of reserves, determine the level of boundaries;
Second, different levels of mining should be separated from the first level (in the shallow dip area, the first level of the first-stage mining area should be divided), sometimes regardless of the level, but the initial mining range should be divided. In the minefields that are developed by Pingshuo, the reserves of Shangshan and downhill should be calculated separately according to the needs.
Third, it is coal. Different coals should be calculated separately, and there are coal seam outcrops or hidden outcrops to separate the wind and oxidation zones.
The above three items must be done. Under this premise, the block segments for calculating reserves are further divided according to other factors.
The boundary line of the reserve block segment, except for the level line, the mine field boundary line (including the wind oxidation zone line) and the coal type boundary line, the more is the fault line, the coal seam floor contour line, the exploration section line, the horizontal dividing line and see Coal point connection.
The calculation method of reserves is also very simple. First, the reserves of each block are calculated. It is also the product of the average thickness of the coal seam and the average bulk density and the block area obtained by the averaging method. The units of reserves, area, thickness and bulk density are 10,000 t, m2, m and t/m3, respectively. Adding each block of reserves is a reserve of coal seams. Similarly, the reserves of each coal seam add up to the reserves of the entire exploration area.
The area is different for each segment, so one block is calculated separately, but the coal thickness and the bulk density are different. It is often that several or more blocks use a thickness, and the bulk density is even more so. It is not uncommon for a coal seam to use the same bulk density.
The method has all the advantages of the arithmetic averaging method. At the same time, it can be divided into several blocks to calculate the reserves according to various factors, which can meet various requirements. Therefore, it is the most widely used in the calculation of coal reserves, especially in Most of the methods used in the detailed investigation and exploration (fine inspection) of coalfield geological exploration. However, in the case of low engineering density, uneven distribution and poor coal seam stability, the accuracy is poor.
We have Stacker(Star wheel and Discrepancy speed), Oil spray machine, Cooling Conveyor, Slope conveyor, Packing Table, Turning machine.
The Stacker is a kind of biscuit which is transmitted from the cooling conveyor. The biscuit can be automatically separated and piled into a vertical shape in the passage by the star wheel and differential speed device, and then transported to the packing table for the packaging and finishing of the biscuit.
Downstream Equipment For Biscuits
Downstream Equipment For Biscuits,Extruder Machine,Plastic Extrusion Machine,Cooling Conveyor
Yangjiang Bordme International Trading Co,. Ltd. , https://www.bordme.com