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Quarry plant T- system quarrying introduced

T shape , and the relationship of the mining section of the boundary , there may be three digging chisel cutting ditch cutting program : cutting Trench located in the adjacent section near the border and transportation Trench (Figure 01a ) ; in this case , prepare a workload less than in the other programs in this system , because the cutting trench located at the rocky outcrop near and transportation trench shorter .

Quarry plant T-shap

Cutting in Hong Kong cutting can cut a section near the border opposite transport Trench starting point (Figure 01b ) . In this program , in addition to the main cutting groove chisel boring auxiliary Trench A ~ B, to transport Trench linked , so an increase to prepare workload . It should be noted , A ~ B, ditch digging chisel cut is along the useful minerals , and thus it constitutes a reserve line of work .

Another drawback of the above program is to increase the tunneling cutting ditch cutting workload . In addition, the section of the middle of digging chisel groove cutting , will bring the surface bench into two separate sections , thus laying of lines in each section . Excavators topsoil , excavator from one section to another section of the migration is very complex . If several bench mining of useful minerals , and also the above-mentioned difficulties in the work of the mining bench .

The above-mentioned deficiencies of the application of this mining plan has been limited. Using this program , along all sections of the open drainage ditch cutting can for deposit purposes , groundwater , especially the exploitation of gravel deposits , it is reasonable to use this program ; in this situation concept excavation trench cutting no special difficulties .

If you dig along the section of the middle chisel cutting Trench . (Figure 01e ) , the shortcomings of the former program still exists. But in this case , by cutting Trench to both sides of the exploitation of this section , thus making the total length of the line of work lengthened almost doubled .

The common drawback of the T-shaped working program is:

(a) prepare workload . Compared with other operating systems , the advantages of the T- shape is the transport distance of the rock cut short .

(b)the laying of the corners inside the quarry must have a larger venue .

(c)move the main line , diversion of corners , it would be much more complex .
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