2949775919

284

Regarding creation of finał result relating to dissimilar cost of execution of the doable drilling system, comparing of drilling systems would be possible in unlike thickness rangę of ore body. Therefore essential materiał to select l^st’ 2^nd and 3^rd choices has been obtained (Tab. 8). According Table 8 in all thickness rangę of ore body, parallel drilling with the lowest cost ratę is the l^st choice. Also it is realized that 2^nd choice in different thickness up to 30 m would be ring drilling pattern with 1 production sublevel drift. As well in thicknesses over 30 m ring drilling with 2 production sublevel drift would be 2^nd altemative.

Selection of preferences on drilling choice in different thicknesses Wybór preferencji wierceń w różnych miąższościach

Thickness [m]	lsl choice	2nd choice	3rd choice	4,h choice
10-20	P	Ri	-	-
20-30	P	R.	r2	-
30-35	P	r2	R,
35-40	P	r2	R,	R3
40	P	r2	R3	Rl

3. Mathematical modeling

In order to generate an economical model for identification of best drilling choice, the below procedurę was applied. This procedurę was extracted from the applied economical comparison method and its finał results. Height of stopę and thickness of ore body are two variables in the model. The objective outcome from the model is dissimilar cost per volume unit of the in-situ ore for each drilling choice. Thus on the basis of the data from economical comparisons between drilling choice in each specific condition of height and thickness, statistical analysis is achieved. Therefore through regression techniąue reąuired mathematical function is produced. The best fitting on the experimental data was created from nonlinear multiple regression curves. Distribution of the data is an effective item to fit the best regression curve. Accordingly for each equation, an Index of determination (r²) is concluded which identifies fitting ratio of each curve. Index of determination (r²) varies between; 0 to 1. The closest Index to 1 shows the best fitting of the regression curve on actual data distribution.

In this research regression was performed through statistical software. Between the concluded curves, the best fitting of each condition has been demonstrated in Table 9. In this table where Cri; cost of ring drilling with one production drift in each sublevel, Cr2; cost of ring drilling with two production drifts in each sublevel, Cr3; cost of ring drilling with three

Wyszukiwarka

Podobne podstrony:
CREATION OF THE INDUSTRIAL PARK IN MYKOLAIY Short summary of the project Creation of the industria
AGRICULTURE CREATION OF THE AGRICULTURAL SERYICE COOPERATIYES FOR BUILDING A PLANT FOR PROCESSING HO
Summaries 199 Małgorzata Olczak Creativity of the university teacher (based on the idea of inno
ISSMFE were present. These delegates decided to send a reviewed version of the International Geotech
REIDER PART 1
11 Without the human hand, the most rcfincd creations of the human mind would be mere
Agnieszka KRAWCZYK-SOŁTYS The main problem in implementation of the knowledge management system, in
IMGx52 2 76    The Origin of Ciirflisation The progress of the Total Culture System,
The variational formulation of the above coupled system reads:Problem Find u G V and q G Q such that
62.    C.64470 EXCHANGE ratę regimes and the stability of the intemational monetary s
Stahl67 bmp 180 WALTER R. STAHL of the entire cardiovascular system based on dozens of eąuations f
lation lives in villages, all these people have been left out of the def-ined system of self-managin
Zeszyły Problemowe - Maszyny Elektryczne Nr 86/2010 of economic indicators of the Stop & Go syst
IMGx52 2 76    The Origin of Ciirflisation The progress of the Total Culture System,
- 40 - 270. Rndiolysis of the ethanol-benzene system in the presence of iodine. radioliz smesej etnn
IMGx52 2 76    The Origin of Ciirflisation The progress of the Total Culture System,
Slajd69 Bielactwo - odbarwianie Fig. 3.11 -2Resłdualpatches of pigmentation(a)and (b) finał results

więcej podobnych podstron