2949775921

286

TABLE 10

Verification of the mathematical model based on some random data consist of different thicknesses of ore body and heights of production błock

TABELA 10

Sprawdzenie modelu matematycznego na podstawie niektórych danych losowych obejmujących różną miąższość pokładów rud i wysokości bloku produkcji

Thickness [m]	Height [m]	Model	r²	Cost from model [$/m³l	Cost from design f$/m³l	Adaptation ratio [%]
10	30	Cr,	0.87	3.726	3.71	100.43
25	70	CR1	0.87	3.733	3.74	99.81
20	80	Cr₂	0.13	3.798	3.84	98.91
35	60	Cr2	0.13	3.760	3.82	98.43
40	40	^CR3	0.82	3.839	3.84	99.97
35	50	Cr3	0.82	4.146	4.29	96.64
10	40	Cp	0.88	2.495	2.49	100.20
40	40	C_P	0.88	2.358	2.36	99.94

effectiveness. Finalły main results respecting economical comparison of drilling systems of sublevel stoping are as follow:

In fuli rangę of an ore body thickness, using parallel drilling is morę economical and cost effectiveness. If applying parallel drilling would be impractical due to technical reasons, ring drilling could be second ideał choice. Ring drilling pattern consist of one production drift in each sublevel, is the most cost effective designation in an ore body up to 30 m thickness. In case of an ore body with thickness over 30 m apply ring drilling pattern include two production drifts in each sublevel is the best designation. With the purpose of apply parallel drilling; generally dissimilar production costs are decreased about 45 percent against execute of ring drilling.

The developed mathematical model identifies dissimilar production cost of each drilling altematives. Therefore on the basis of thickness of ore body and height of production błock economical calculation for feasibility study would be viable step.

REFERENCES

[1] Contador N.V.,Glavic M.F.,2001 - Underground Mining Methods, Engineering fundamentals and International casestudies. pp. 266 (SME, Colorado).

[2] Gertch R.E.,Bullock R.L., 1998 -Techniques in Underground Mining, pp. 82-83 (SME, USA).

[3] Haycocks C., Aelick R.C., 1992 - Mining Engineering Fłandbook. pp. 1720-1721 (SME, New York).

[4] J i me no C.L., 1995 - Drilling and blasting of rocks. pp. 245 (Balkema, Netherlands).

[5] Mann C.D., 1998 - Techniques in Underground Mining, pp. 229 (SME, USA).

[6] PughG.M., Rsmussen D.G., 1982 - Underground Mining Methods Handbook. pp. 469-474 (SME, New York).

Wyszukiwarka

Podobne podstrony:
00146 &5dd89e4c9f1d1c9b9ade934fbf44bb 147 Optimization and Sensitivity Analysis Table 10. Compariso
Figurę 10. Schematic representation of the data calculation process with the Infinicyt software base
MECHANICS AND MACHINĘ BUILDING I Modernity of the education is based on technical Alumnus of Faculty
detailed scalę (Kozłowska —Szczęsna, ęd. 1986). as well. The,atlas, is based^on^theJ detailed stud
63 (134) 6Diagnosis The diagnosis is based on appearance of the lesions. The differential diagnosis
Summaries 199 Małgorzata Olczak Creativity of the university teacher (based on the idea of inno
cover2 R.L DIONE writes: "I present the materiał in this book, not as a theory based on some so
BIOMASS AND B!OENE*GY 34 (jOIO) 218-226 219 computes the cost reductions based on model outcome like
You work as a network technician at TestKing.com. Please study the exhibit carefully. Based on the i
5b (20) Practicing Test method: The test is based on gravimetric measurements. Equipment and Solutio
69 (119) 6 A Practical Guide to Feline DermatologyDiagnosis The diagnosis is based on lesion distrib
THE PROGRAM IS BASED ON 6 FUNDAMENTAL PRINCIPLES: LEARNING THE CULTURE Logoplaste values methods tha
37 (248) 3 Practical Guide to Feline DermatologyDiagnosis The diagnosis is based on finding these 6
Stahl67 bmp 173 THE ROLE OF MODELS IN THEORETICAL BIOLOGT TABLE I (Continued) Type of Model Natu
Mathematical model analysis of sample from... b. The solution of the equations describing the model

więcej podobnych podstron