Method for computing coalface safety through CO flux in roadway
A technology of safety and excavation surface, which is applied in calculation, earthwork drilling and mining, and special data processing applications, etc. It can solve problems such as poisoning and suffocation of workers, false safety of excavation surface, and whether the roadway environment is not perfect or not, and achieves simple operation, Guaranteed safety effect
Inactive Publication Date: 2014-08-06
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
In this case, the CO concentration detected by the CO sensor will be displayed below the safe value, thus creating a false impression that the excavation surface is "safe"
In this case, workers stray into the excavation face, high concentration of toxic gases (CO, NO x ) causes poisoning and suffocation of workers in a short period of time
It can be seen that it is not perfect to only monitor the CO concentration value as a method to determine whether the roadway environment is safe or not.
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[0023] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0024] The invention provides a method for calculating the safety of a driving surface by utilizing the CO flux in the roadway aiming at the defects and deficiencies existing in the existing mine roadway CO monitoring method.
[0025] Such as figure 1 As shown, it is a schematic diagram of a single-ended roadway and a CO sensor layout diagram of the present invention. One end of the single-ended roadway is closed, and the outlet of one end is connected to the main road 6 .
[0026] After the drilling and charging work in the single-ended roadway is completed, the C sensors are arranged at the monitoring point 12 and the monitoring point 23; then blasting is carried out, the fan 5 is ventilated into the single-ended roadway through the air duct 4, and the...
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The invention provides a method for computing coalface safety through the CO flux in a roadway, and belongs to the field of mine roadway safety monitoring. According to the method, a CO sensor is arranged on the designated location in the blind roadway, and monitoring data of the CO sensor are analyzed and are compared with theory CO production amount to judge the explosive blasting effect. On this basis, whether CO in the roadway is excluded totally or not is judged by working out the CO flux of the cross section of the roadway, and the safety of the environment of the blind roadway is determined. The method is safe, reliable, low in cost, strong in feasibility and easy to operate.
Description
technical field [0001] The invention relates to the field of mine roadway safety monitoring, in particular to a method for calculating the safety of a driving surface by using the CO flux in the roadway. Background technique [0002] In recent years, in the excavation process of single-headed roadways in metal mines, most of them adopt the method of blasting excavation. When blasting, a large amount of gun smoke will be produced, and the toxic components are mainly CO and NO x . Workers in excess CO and NO x Working in the environment will lead to gun smoke poisoning and suffocation accidents. Due to the semi-enclosed space of the single-ended alleyway, the gun smoke tends to gather in the gun smoke throwing area. When the local ventilator is supplying air, because the outlet of the fan cylinder exceeds its effective range to the excavation surface, a vortex zone will be formed on the excavation surface, and CO and NO in the vortex zone will x The concentration is high....
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IPC IPC(8): G06F19/00E21F17/18
Inventor 纪洪广曹杨由爽张舸
Owner UNIV OF SCI & TECH BEIJING