Evaluation method for influence factors of high-altitude and high-cold metal mining air drill operation efficiency

An efficiency influencing factor and metal mine technology, which is applied in the field of evaluation of factors influencing the efficiency of pneumatic drilling operations in high-altitude and alpine metal mine mining, so as to avoid human disturbance.

Active Publication Date: 2020-11-27
XINJIANG UNIVERSITY
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  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Generally speaking, most of the existing studies start from a single factor of production, usually only considering the impact of high-altitude operating environment on people, or the impact of operating environment on machinery and equipment, etc. Starting with the collaborative relationship between operating machinery and the operating environment, establish an evaluation index system for a certain type of work

Method used

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  • Evaluation method for influence factors of high-altitude and high-cold metal mining air drill operation efficiency
  • Evaluation method for influence factors of high-altitude and high-cold metal mining air drill operation efficiency
  • Evaluation method for influence factors of high-altitude and high-cold metal mining air drill operation efficiency

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Experimental program
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Embodiment 1

[0068] Embodiment 1: The evaluation method of the influencing factors of the pneumatic drilling operation efficiency in the high-altitude alpine metal mine mining is carried out according to the following steps:

[0069] The first step is to collect personnel index data, equipment index data and environmental index data. The personnel index data includes age (X1), working years (X2), education level (X3), physical and psychological fatigue (X4) and degree of acclimatization ( X5) five indicators, the equipment index data include the output power of the diesel engine (Y1), the load and energy consumption of the wind drilling rig (Y2) and the aging and wear rate of the wind drilling rig (Y3), and the environmental index data include the altitude (Z1 ), temperature (Z2), humidity (Z3), oxygen content (Z4), atmospheric pressure (Z5), air velocity (Z6), vibration (Z7), lighting (Z8) and noise (Z9) nine indicators;

[0070] In the second step, in order to eliminate the impact of the...

Embodiment 2

[0109] Embodiment 2: as the optimization of above-mentioned embodiment, this index of educational level (X3) adopts Cauchy function formula (15) to carry out assignment quantification to it before carrying out the standardized processing described in the second step of embodiment 1,

[0110]

[0111] In the formula, α, β, a, b are undetermined parameters, and c is a basically acceptable grade value in the grade. The parameters can be determined: α=4.8003, β=0.7798, a=0.5371, b=-0.0451. Finally, determine the quantization value of each level: f(1)=0.01, f(2)=0.2367, f(3)=0.5066, f(4)=0.7, f(5)=0.8193, f(6)=0.9173 , f(7)=1.

Embodiment 3

[0112] Embodiment 3: as the optimization of above-mentioned embodiment, this index of the output power (Y1) of diesel engine is before carrying out the standardization process described in the second step of embodiment 1, the output power (Y1) of diesel engine is calculated by formula (16),

[0113]

[0114] In the formula (16): η is the output power of the diesel engine; Nm is the mechanical loss power of the internal combustion engine, kW; Ni is the indicated power of the internal combustion engine, kW; Ne is the effective power of the internal combustion engine, kW; wherein, the calculation of Nm is as formula (17),

[0115]

[0116] In the formula (17): ε is the compression ratio; Vm is the average speed of the piston, m / s; Vh is the working volume of the cylinder, L; τ is the number of strokes; n is the speed, r / min; i is the number of cylinders, Ne Calculated as formula (18),

[0117]

[0118] In formula (18): ne is the effective thermal efficiency, which refers...

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Abstract

The invention relates to the technical field of operation efficiency evaluation methods, in particular to an evaluation method for influence factors of high-altitude and high-cold metal mining air drill operation efficiency, which comprises the following steps of: firstly, acquiring 17 index data in three aspects of personnel factors, equipment factors and environmental factors, and standardizingthe acquired index data; determining an index weight by using an entropy weight method, and generating a weighted normalization matrix; and extracting principal components by adopting a principal component analysis method, solving the comprehensive score of the principal components of each subsystem of the evaluation sample to obtain a final evaluation basis, and obtaining an index evaluation result. According to the method, the evaluation indexes influencing the man-machine efficacy are extracted by performing system analysis on the cooperative relationship between the high-altitude mine airdrill operation personnel and the operation machine and the operation environment and the specific and mutually restricted design variables. An entropy weight method is introduced into principal component analysis and evaluation, a PCA evaluation model fused with the entropy weight method is constructed, and a new method is provided for existing evaluation practice.

Description

technical field [0001] The invention relates to the technical field of operation efficiency evaluation methods, and relates to an evaluation method for factors affecting the operation efficiency of pneumatic drilling in high-altitude alpine metal mine mining. Background technique [0002] In the existing safe mining of metal mines under high-altitude and high-cold conditions, the biggest challenge is the environmental characteristics such as low pressure and hypoxia, cold and dry, and poor hydrogeological conditions, which lead to poor mining conditions, complex catastrophe mechanisms, and human-machine efficiency. Inferior question. [0003] In response to the challenges faced by high-altitude construction operations, relevant experts and scholars at home and abroad have conducted a lot of research on factors such as construction workers, equipment, and the environment in high-altitude areas. [0004] (1) Research on personnel working in high-altitude areas: Alexander Egge...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02G06K9/62
CPCG06Q10/04G06Q10/06393G06Q50/02G06F18/2135Y02P90/82
Inventor 黄河李晓娟陈辉华宁张新红
Owner XINJIANG UNIVERSITY
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