Selection of extraction method and production rate

Select extraction method

 One of the most importantfactors in the economic efficiency of construction stones is the methods and technology of extraction, in order to prepare plaques, stones should be extracted as blocks from the mine.  In order to prepare large plaques, extraction and preparation of quarrys with appropriate dimensions from the mine, it is considered that the extraction of queries from the mine is done in different ways: extraction method with the help of nariya materials, extraction by expanding materials, extraction by pit method.  Parallel, wire cutting, extraction with the help of winning buds, flame extraction, etc. quality of the rock in terms of dimensions, appearance, existence of cracks and seams, etc. According to the extraction method used in the deposit, it is different (Hamidi Anaraki, 1988).

  There are gaps and gaps and drains inthe rock, which, if exceeded, would not be suitable for the extraction of the rock, so that before the extraction of the stone, certain areas of the mine, identification and extraction operations would begin.

The basic design of the mine, the selection of suitable mash, training of the staff and the use of experienced people in the extraction and preparation of suitable stones are very important, after these steps, choosing the right method in extracting the limestone with desired dimensions and shapes and preventing the loss of reserves or depreciation b about the mashofthe machinery has an effective role.  For example, the use of nariya materials in   the exploitationof the qara stone causes hair cracks in the stone and the production of large amounts of carcasses may be microscopic, but even on this scale, they penetrate the destructive factors and consequently disintegrate the stone if in the design of the mine, the height of the stairs. The distance between the holes, the type of narieh materials consumed, the amount of it and other factors will be studied closely, to a large extent the waste caused by the explosion will be reduced.

In general, the factors affecting the selection of suitable extraction method are:

A – Block price

The sale price of the block is an important factor that allows the mining designer to use high-cost methods and tools to reduce the amount of waste, in mines where the resulting stone has a relatively cheap sale price and has a lot of reserves, if there is no control from the mining authorities, it is usually more appropriate to use the method. In order for the stone to be economically marketable, saving is an important factor in the study of construction stone mines, in addition to evaluating the price of the block, investigating the possibility of using produced carcasses and inferior stones and other wastes in the vicinity of some stone mines, is very important. Sand mills for concrete or asphalt, this is very important in reducing the cost of moving waste and waste materials and even generating income for mining and thus changing the economic image of the deposit (Nabiyan et al., 1991).

B- Access to mish-ying instruments

  Sometimes, the use of several types of machines or different methods should be suggested in this case, considering the access to the mishof the machinery or the possibility of construction and other issues related to the preparation of mash, the appropriate method and the use of the best mashof the instruments in this regard, perhaps more importantly.  From access to mish-ying equipment, it is possible to provide their tools and consumable parts, which should be the issue of continuing the supply of parts and tools with regard to the facilities of manufacturing or purchasing from other countries and foreign exchange, commercial, political and …   He noticed.

C- Expert Force

In the use of different extraction methods, the existence of experts or the possibility of training knowledgeable and skilled staff for the work or tools of the project is  of great importance  .  It may be impossible to use proper  machinery and tools in some places due to lack of access to specialist staff and low level of public technology in the region or society.

D – The possibility of using waste

If   there is a  market for the construction of stone artifacts for  the consumption of small pieces or blocks, the issue of   choosing the  extraction method is another form of the M.G.Y. Red itself, because what has never been considered as waste was not economic value, and witha set to move.   As  a result, the possibility of using methods deemed inappropriate in other mines   will be considered  inappropriate in  all kinds of mines and will be referred to as a  desirable method.  For example  , in thermal method, the produced waste has very low quality and cannot be used, so if this method is chosen for extraction, the economic value of waste should be excluded.

(a) Storage rate

In many stone extraction workshops, it  is possible to develop the workshop in several steps and in length, the development of the workshop or work  at the same time in several steps depends largely on the amount of production, if the demand is limited and the production is also proportional to it, the growth of the workshop or work  at the same time in a few steps is not necessary, but ifthe  market is more applicant and the mung bean.  And have enough tools at your disposal, work on a few stairs and at the right length, will be developed. In this case  ,  the mish-y0sare usually  exploited more  and their stopping is minimal.

And – the possibility of providing adequate water

Some   methods of stone extraction such as cutting method with steel wire or diamond wire and using the winning grains need water, so the possibility of providing water and its cost should be considered as the main factor in determining the extraction method, perhaps in low water areas using parallel pit methods, jet flame, etc. Be required.

G- Power supply

In many extraction methods, it  is impossible  to use special machine if  there is not enough electricity available. Therefore, access to the national electricity network or the possibility of generating electricity in the workshop should be examined precisely, then the method selection or determination  of the mishof the machinery should be taken in many  workshops for  the extraction  of construction stones, due to technical, economic and safety issues, experts of a combination of methods and mash.   They have  considered different instruments.   For example, if they use diamond wire cutting as the main method in a workshop to extract the chin,  the mish of  the cutter with the chain arm (Havag) may be used to cut the back surface or create the first step in  the underground workshops, using a cutting machine with a chain arm that costs more than the diamond wire.      Another example is  the use of  parallel holes to divide  large blocks  in workshops where extraction is done by cutting wire or cutting with a chain arm.   That the wire cutter or cutter with a chain arm to divide the blocks or in some   other   partsof the  workshop can be partly  the way to produce extra production  , also when it is not possible to develop the power grid, in places that are not necessarily necessarily  open. The mashof electrical machinery used   by the Y.Y.N., the power grid should be used and the mash of the machines that can work with compressed air such as hammers and … It was used to  actively complete the previous ones.

Production Rate

One of the main issues  in the design of the mine  is the amount of minerals  that are based on the consumption market, in fact, the mine is designed based on the elimination of local  components and the domestic consumption market and the possibility of exporting abroad  , and the amount of production is controlled by the consumption factor inside or outside the country. . In addition, without any change in the general principles, due to the amount of extraction, it is also possible to develop the workshop.