A Calculation Method of Intensive Mine Ventilation Resistance
A technology for mine ventilation and ventilation resistance, which is used in mine/tunnel ventilation, mining equipment, earth-moving drilling, etc. It can solve the problems of complicated underground roadways and the inability of monitoring data to cover all underground locations, which is conducive to intelligent regulation The effect of early warning, saving resources and reducing errors
Active Publication Date: 2018-09-14
CHINA UNIV OF MINING & TECH
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Problems solved by technology
Under normal circumstances, there are a large number of coal mine underground roadways and the real situation is complex, and the monitoring data cannot cover all underground locations, and only some key locations can be monitored
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[0041] The present invention will be further described below in conjunction with accompanying drawing.
[0042] Such as figure 1As shown, an intensive mine ventilation resistance measurement method is to establish a ventilation resistance measurement subsystem for each independent roadway, and arrange wind speed sensors reasonably. The part is also the overlapping part of the long pipeline 1 and the short pipeline 2, which specifically includes the following steps:
[0043] Step 1: Establish several ventilation resistance measurement subsystems in each independent tunnel in the underground tunnel, and select PVC steel wire hose as the pressure measurement pipeline 5 in the resistance measurement subsystem, and the pressure measurement pipeline 5 is divided into long pipelines 1 and short pipeline 2;
[0044] Step 2: Make two or more roadways in parallel with each other in the underground, share the beginning node and the end node, and install pitot tubes 3 at the beginning n...
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An intensive mine ventilation resistance measuring and calculating method comprises the following steps that a plurality of ventilation resistance measuring subsystems are arranged in underground roadways, and wind speed sensors are reasonably arranged; two or more underground roadways which are connected in parallel share an initial node and a tail node, pitot tubes and pressure difference sensors are arranged at the initial node and the tail node of the roadways, and the sharp ends of the pitot tubes are perpendicular to the cross sections of the roadways and right face the wind flow direction; long pipelines and short pipelines are arranged fixedly along the waist lines of the inner walls of the roadways; the wind outlet ends of the long pipelines and the wind outlet ends of the short pipelines are connected with two measurement connectors of the pressure difference sensors correspondingly, and then the ventilation resistance hi of the roadways can be obtained; the ventilation resistance h of a mine is calculated; and the wind resistance Ri of each roadway is calculated. The method can save resources needed by measurement of mine ventilation resistance with an existing differential pressure gauge method, can avoid measurement errors caused by human factors, can achieve high-precision mine ventilation network online resolution and facilitates intelligent adjustment and control and advanced alarm of a mine ventilation system.
Description
technical field [0001] The invention relates to the field of mine ventilation and safety, in particular to an intensive mine ventilation resistance measurement method. Background technique [0002] At present, there are two commonly used methods for measuring mine ventilation resistance, the barometer method and the differential pressure meter method. Compared with the two methods, the measurement accuracy of the barometer method is lower, resulting in a large error in the measurement results; the measurement difficulty of the differential pressure meter method is difficult, and it is not suitable for large-scale measurement of all minerals. No matter which method is used, a certain number of professional and technical personnel are required to conduct manual census measurements on the whole mine. The wind network calculation of mine ventilation has been developed to the point that it can be realized by computer programming, such as mine ventilation simulation software (Ven...
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IPC IPC(8): E21F1/02
CPCE21F1/02
Inventor 魏连江周福宝夏同强胡建坤
Owner CHINA UNIV OF MINING & TECH