| China has a vast plateau and abundant mineral resources.With the gradual advancement of the “Belt and Road” national strategy,high-altitude mines have become China's main mineral base.However,due to the harsh natural environment at high altitudes,it is very easy to cause underground personnel safety accidents in the process of resource development.Among them,railless transportation accidents are the most frequent,and the driver as the core of the railless transportation system,ensuring its physical health is the first priority for transportation safety task.In-depth exploration of the relationship between high-altitude mine underground environmental factors and driver's physiological health,and then take targeted measures to eliminate or reduce the impact of environmental factors on the driver's physiological health,can improve the safety of underground production to a certain extent.The thesis takes the underground railless transportation system in high-altitude mines as the research object,explores the changes of the driver's physiological response indicators with the environmental parameters of the cab,and improves the operating environment of the cab through the system control to ensure the safety of underground transportation operations.The main work and results of the thesis are as follows:(1)Through literature research and on-site testing,the main environmental risk factors that affect the physiological health of workers in high-altitude mines are low oxygen partial pressure,low temperature,and low humidity.Under the influence of the above environmental factors,the blood oxygen saturation,heart rate,body temperature,and blood pressure of the human body will change significantly,and such changes can effectively reflect the physiological health of the human body.Based on this,the specific content of the environmental parameters and human physiological response indicators required for subsequent research were determined.(2)With the help of a high-altitude environment simulation experiment system,a single-factor influence experiment of oxygen partial pressure,temperature,and humidity on human physiological response indicators was carried out.Through the fitting analysis of experimental data,the trends of the physiological response indexes of the human body with the downhole environmental parameters,the obvious critical values and the quantitative relationship are obtained,which lays the foundation for the subsequent research.(3)Based on the single-factor influence experiment results,the orthogonal composite factor influence experiment was designed and carried out.Through the range analysis of the experiment results,the range values of each environmental factor affecting each physiological response index and the influence of primary and secondary ranking were obtained.Using statistical analysis software SPSS for multiple regression analysis,a regression mathematical model of each physiological response index with environmental parameters was constructed.(4)According to the influence of various environmental risk factors on human physiological response indicators,the cab and driver of underground trackless transport vehicles are taken as the research objects,and the adaptive control system of the cab environment is designed and developed based on the safety engineering principles.Through the module integration design of the cab monitoring and control hardware system,the use of Lab VIEW to develop a centralized control software system platform,combined with the built regression mathematical model to design an adaptive control algorithm,and finally completed the overall system construction.The results of the paper have a guiding role in the safe production of high-altitude mines,and have practical significance for promoting the sustainable development of mineral resources in high-altitude regions in the west. |
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