سلام، مهمان
07-30-2020، 12:17 PM
Main Ventilation Equipment
FBCDZ Series mining ground extraction counter rotating axial flow fan, can be divided into explosion-proof and non explosion-proof type, i.e. explosion-proof BDK series fan and non explosion-proof DK series fan, which can be respectively expressed as, for example,FBCDZ-8-NO27, Non explosion-proof DK-8-NO.27.
This series of fans can be divided into the following types according to the hub ratio and explosion-proof type. BDK62, BDK54, DK45 and DK40 series fans are large-scale Explosion-proof axial flow fans developed by combining the ventilation network parameters of various kinds of coal mines and non coal mines in China. They have the advantages of high efficiency, energy saving and low noise. The static pressure efficiency of the highest device of the product is more than 86%, It has reached the leading level of mining Main Ventilation Equipment in China. The material used for the fan has passed the friction spark test of the testing center of Chongqing Branch of Chinese Academy of Coal Sciences, and has reached the explosion-proof requirements. The explosion-proof performance of the whole fan has passed the explosion-proof test of the national explosion-proof electrical product quality testing center.
The main models used in coal mines are BDK62 and BDK54, which have been renamed FBCDZ coal mine surface extraction explosion-proof counter rotating axial flow main fan.
Dk62, DK54, DK40 and DK45 series fans are the main fans of extraction counter rotating axial flow for surface and underground non coal mines.
Four hub ratios are adopted for DK62, DK54, BDK54, DK40 and DK45 series fans, and four rotating speeds are adopted for the motor: 6-pole (980r / min), 8-pole (740 / min), 10 pole (580 / min) and 12 pole (490r / min). There are two different forms of blade number: the total number of FBCZA (original B) (a) or (a) blades is Z = 32, and the total number of FBCZA (original B) (b) or (b) blades is Z = 24
B: B represents explosion-proof type (coal mine is explosion-proof type, non coal mine is explosion-proof type), D represents counter rotating type, K represents mining type, 62 represents hub ratio of 0.62.
FBCDZ respectively represents: F represents ventilator, B represents explosion-proof type, C represents extraction type, D represents counter rotating type, and Z represents main ventilator.
FKCDZ respectively represents: F represents ventilator, K represents mining type, C represents extraction type, D represents counter rotating type, and Z represents main ventilation.
Determination of the model of the cyclone and the power of the matching motor
Generally, the fan model should be selected according to the most difficult ventilation period in each stage of mining. At the same time, we should also consider that in the initial stage of mining, when the negative pressure is low and the air volume is small, we should also obtain more than 70% of the operating static pressure efficiency. Only in this way can we give full play to the efficient and energy-saving function of DK series fans.
For the three stages of mining mine ventilation network parameters are very different, in the initial stage of mining, only one stage of DK series fan can be operated, and the other stage can be used as standby.
Generally, when DK series fans are selected according to the three stages of mining, the operating efficiency of each stage should be over 75%, and the most difficult period should be over 80%. If the fan with the above operating efficiency cannot be found in the sample, you can contact our factory to adjust the parameters of the fan to meet the above conditions.
The motor power indicated in sample table 2 is the high power of this model. In general, when selecting the type of mine, the motor power shall be equipped according to the actual ventilation parameters. Calculation method:
Where: N --refers to the required motor power, which refers to the total power of class I and II fans (kw);
PST - is the total resistance of the mine in the most difficult period (PA);
Q - total air volume in the most difficult period of the mine (m3 / s)
鈥?- check the actual operating condition efficiency of this sample according to PST and Q parameters;
K - power reserve coefficient, generally k = 1.1 ~ 1.5;
According to the above-mentioned total power n, according to the value of N / 2, and referring to the motor power level series, two motors with the same power shall be selected, and Ni + NII 鈮?n, which needs to be specially pointed out; when a certain type of motor is selected, and the value of n is calculated according to the above formula, after selecting the motor Ni = NII, it shall be compared with the maximum power of single machine given in Table 2, if the value of Ni = NII is greater than that of single motor given in Table 2 Maximum power, just this type of fan is not applicable, you must choose another fan of larger specification.
If there is a large power gap between the motors required in the early and later stages of the mine, it can be compared economically. In the early stage, two motors with smaller power will be equipped, and in the later stage, they will be replaced with high-power motors. The main sample can make the motors operate under the condition of high power factor and efficiency, reduce power consumption and save power.
The design service life of DK (now FBCDZ) series fans is 20 years.
DK62(A)MAIN VENTILATION EQUIPMENT SPECIFICATION FAN
TYPE NO. Rotation speed (r/min) Power(kW) Air volume(m3/s) Static Pressure(Pa)
DK62-6129802脳227.4锝?8.7515锝?494
DK62-6139802脳308.1锝?3792锝?300
DK62-6139802脳378锝?5.4792锝?490
DK62-6149802脳3710.1锝?6918锝?550
DK62-6149802脳5510.1锝?1.7918锝?888
DK62-6159802脳7512.4锝?9.01054锝?315
DK62-6169802脳11015.0锝?7.31199锝?772
DK62-6179802脳13218.0锝?6.81353锝?258
DK62-6189802脳18521.4锝?7.41517锝?774
DK62-6199802脳22025.1锝?9.31690锝?319
DK62-6209802脳25029.3锝?2.51873锝?893
DK62-6219802脳35533.9锝?07.02065锝?497
DK62-8177402脳5513.6锝?2.9772锝?428
DK62-8187402脳7516.1锝?0.9865锝?722
DK62-8197402脳11019.0锝?0.0964锝?033
DK62-8207402脳13222.1锝?9.81068锝?360
DK62-8217402脳16025.6锝?0.81177锝?705
DK62-8227402脳20029.5锝?2.91292锝?066
DK62-8237402脳25033.7锝?06.21412锝?444
DK62-8247402脳31538.2锝?20.71538锝?839
DK62-8257402脳31543.2锝?36.41669锝?250
DK62-8267402脳45048.6锝?53.41805锝?679
DK62-8277402脳45054.4锝?71.81946锝?124
DK62-8287402脳71060.7锝?91.62093锝?586
DK62-10205902脳7517.6锝?5.7679锝?136
DK62-10215902脳9020.4锝?4.4748锝?355
DK62-10225902脳11023.5锝?4.1821锝?585
DK62-10235902脳13226.8锝?4.7898锝?825
DK62-10245902脳16030.5锝?6.2978锝?076
DK62-10255902脳18534.5锝?08.71061锝?338
DK62-10265902脳25038.8锝?22.31147锝?610
DK62-10275902脳25043.4锝?37.01237锝?893
DK62-10285902脳31548.4锝?52.81331锝?187
DK62-10295902脳35553.8锝?69.71427锝?491
DK62-10305902脳45059.5锝?87.91527锝?806
DK62-10325902脳56072.3锝?28.01738锝?468
DK62-10345902脳80086.7锝?73.41962锝?173
DK62-10365902脳1000102.9锝?24.72199锝?921
DK62-12244902脳11025.3锝?9.9674锝?122
DK62-12254902脳11028.6锝?0.3732锝?302
DK62-12264902脳13232.2锝?01.6791锝?490
DK62-12274902脳16036.1锝?13.8853锝?685
DK62-12284902脳20040.2锝?26.9918锝?888
DK62-12294902脳20044.7锝?40.9985锝?098
DK62-12304902脳25049.5锝?56.01054锝?315
DK62-12324902脳35560.0锝?89.41199锝?772
DK62-12344902脳45072.0锝?27.11353锝?258
DK62-12364902脳56085.5锝?69.61517锝?774
DK62-12384902脳800100.5锝?17.11690锝?319
DK62-12404902脳1000171.2锝?70.01873锝?893
DK62(B)MAIN VENTILATION EQUIPMENT SPECIFICATION
TYPE NO. Rotation speed (r/min) Power(kW) Air volume(m3/s) Static Pressure(Pa)
DK62-6159802脳5514.5锝?6.6805锝?335
DK62-6169802脳7517.6锝?4.4916锝?656
DK62-6179802脳9021.1锝?3.31035锝?999
DK62-6189802脳13225.0锝?3.31160锝?362
DK62-6199802脳16029.4锝?4.41292锝?746
DK62-6209802脳22034.3锝?6.81432锝?150
DK62-6219802脳28039.7锝?00.51579锝?576
DK62-8187402脳5518.9锝?7.8661锝?917
DK62-8197402脳7522.2锝?6.2737锝?136
DK62-8207402脳9025.9锝?5.5816锝?367
DK62-8217402脳13230.0锝?5.9900锝?609
DK62-8227402脳16034.5锝?7.2988锝?863
DK62-8237402脳18539.4锝?9.71080锝?130
DK62-8247402脳22044.8锝濱13.21176锝?408
DK62-8257402脳28050.6锝?28.01276锝?698
DK62-8267402脳35556.9锝?44.01380锝?999
DK62-8277402脳35563.7锝?61.01488锝?313
DK62-8287402脳45071.1锝?79.81600锝?638
DK62-10215902脳7523.9锝?0.5572锝?659
DK62-10225902脳7527.5锝?9.5628锝?820
DK62-10235902脳9031.4锝?9.5686锝?990
DK62-10245902脳11035.7锝?0.3747锝?166
DK62-10255902脳16040.3锝?02.1811锝?351
DK62-10265902脳18545.4锝?14.8877锝?542
DK62-10275902脳20050.8锝?28.6946锝?742
DK62-10285902脳25056.7锝?43.41017锝?949
DK62-10295902脳25063.0锝?59.31091锝?163
DK62-10305902脳31569.7锝?76.41168锝?385
DK62-10325902脳45084.6锝?14.01329锝?85J
DK62-10345902脳560101.5锝?56.71500锝?348
DK62-10365902脳710120.4锝?04.71682锝?874
DK62-12254902脳11033.5锝?4.8559锝?621
DK62-12264902脳11037.7锝?5.3605锝?754
DK62-12274902脳13242.2锝?06.8652锝?891
DK62-12284902脳16047.1锝?19.1702锝?034
DK62-12294902脳16052.3锝?32.3753锝?182
DK62-12304902脳20057.9锝?46.5806锝?335
DK62-12324902脳25070.3锝?77.7916锝?656
DK62-12344902脳31584.3锝?13.21035锝?999
DK62-12364902脳450100.0锝?53.11160锝?362
DK62-12384902脳560117.6锝?97.61292锝?746
DK62-12404902脳710137.2锝?47.21432锝?150
DK62-12424902脳1000158.8锝?01.91579锝?576
DK62-12444902脳1250182.6锝?62.11733锝?022
DK54MAIN VENTILATION FAN SPECIFICATION FAN
TYPE NO. Rotation speed (r/min) Power(kW) Air volume(m3/s) Static Pressure(Pa)
DK54-6129802脳18.512锝?6400锝?500
DK54-6139802脳3015.2锝?3.7463锝?750
DK54-6149802脳4518.9锝?2.1537锝?029
DK54-6159802脳5523.3锝?1.7617锝?340
DK54-6169802脳7528.3锝?2.8702锝?560
DK54-6179802脳11033.9锝?5.3792锝?992
DK54-6189802脳13240.2锝?9.4888锝?354
DK54-6199802脳18547.3锝?05.0989锝?737
DK54-6209802脳22055.0锝?23.01096锝?141
DK54-6219802脳22034.3锝?6.81432锝?150
DK54-8187402脳7530.0锝?8.0506锝?913
DK54-8197402脳9036.0锝?9.0564锝?131
DK54-8207402脳11042.0锝?3.0625锝?361
DK54-8217402脳13248.0锝?07.0670锝?603
DK54-8227402脳16055.0锝?23.0756锝?857
DK54-8237402脳20063.0锝?41.0820锝?125
DK54-8247402脳25072.0锝?60.0900锝?400
DK54-8257402脳31581.0锝?81.0977锝?689
DK54-8267402脳35592.0锝?04.01056锝?990
DK54-10245902脳13256.0锝?25.0552锝?090
DK54-10255902脳16064.0锝?42.0600锝?266
DK54-10265902脳18572.0锝?60.0649锝?450
DK54-10275902脳22080.0锝?79.0700锝?643
DK54-10285902脳25090.0锝?00.0752锝?843
DK54-10295902脳315100.0锝?45.0852锝?220
DK54-10305902脳355110.0锝?71.0864锝?264
DK54-10315902脳450122.0锝?62.0950锝?400
DK54-10325902脳560132.0锝?88.0980锝?650
DK54-10335902脳630143.0锝?18.01050锝?850
DK54-10345902脳710160.0锝?44.01050锝?100
DK54-12354902脳560148.0锝?24.0900锝?250
DK54-12364902脳630162.0锝?42.0950锝?450
DK54-12374902脳710178.0锝?80.0980锝?620
DK54-12384902脳800192.0锝?16.01050锝?800
DK54-12394902脳900205.0锝?52.01100锝?030
DK54-12404902脳1000220.0锝?83.01150锝?230
DK54-12414902脳1200240.0锝?20.01200锝?450
DK54-12424902脳1300255.0锝?60.01300锝?650Underground Ventilation Systems
website:http://www.zongdamining.com/underground-ventilation-systems/
FBCDZ Series mining ground extraction counter rotating axial flow fan, can be divided into explosion-proof and non explosion-proof type, i.e. explosion-proof BDK series fan and non explosion-proof DK series fan, which can be respectively expressed as, for example,FBCDZ-8-NO27, Non explosion-proof DK-8-NO.27.
This series of fans can be divided into the following types according to the hub ratio and explosion-proof type. BDK62, BDK54, DK45 and DK40 series fans are large-scale Explosion-proof axial flow fans developed by combining the ventilation network parameters of various kinds of coal mines and non coal mines in China. They have the advantages of high efficiency, energy saving and low noise. The static pressure efficiency of the highest device of the product is more than 86%, It has reached the leading level of mining Main Ventilation Equipment in China. The material used for the fan has passed the friction spark test of the testing center of Chongqing Branch of Chinese Academy of Coal Sciences, and has reached the explosion-proof requirements. The explosion-proof performance of the whole fan has passed the explosion-proof test of the national explosion-proof electrical product quality testing center.
The main models used in coal mines are BDK62 and BDK54, which have been renamed FBCDZ coal mine surface extraction explosion-proof counter rotating axial flow main fan.
Dk62, DK54, DK40 and DK45 series fans are the main fans of extraction counter rotating axial flow for surface and underground non coal mines.
Four hub ratios are adopted for DK62, DK54, BDK54, DK40 and DK45 series fans, and four rotating speeds are adopted for the motor: 6-pole (980r / min), 8-pole (740 / min), 10 pole (580 / min) and 12 pole (490r / min). There are two different forms of blade number: the total number of FBCZA (original B) (a) or (a) blades is Z = 32, and the total number of FBCZA (original B) (b) or (b) blades is Z = 24
B: B represents explosion-proof type (coal mine is explosion-proof type, non coal mine is explosion-proof type), D represents counter rotating type, K represents mining type, 62 represents hub ratio of 0.62.
FBCDZ respectively represents: F represents ventilator, B represents explosion-proof type, C represents extraction type, D represents counter rotating type, and Z represents main ventilator.
FKCDZ respectively represents: F represents ventilator, K represents mining type, C represents extraction type, D represents counter rotating type, and Z represents main ventilation.
Determination of the model of the cyclone and the power of the matching motor
Generally, the fan model should be selected according to the most difficult ventilation period in each stage of mining. At the same time, we should also consider that in the initial stage of mining, when the negative pressure is low and the air volume is small, we should also obtain more than 70% of the operating static pressure efficiency. Only in this way can we give full play to the efficient and energy-saving function of DK series fans.
For the three stages of mining mine ventilation network parameters are very different, in the initial stage of mining, only one stage of DK series fan can be operated, and the other stage can be used as standby.
Generally, when DK series fans are selected according to the three stages of mining, the operating efficiency of each stage should be over 75%, and the most difficult period should be over 80%. If the fan with the above operating efficiency cannot be found in the sample, you can contact our factory to adjust the parameters of the fan to meet the above conditions.
The motor power indicated in sample table 2 is the high power of this model. In general, when selecting the type of mine, the motor power shall be equipped according to the actual ventilation parameters. Calculation method:
Where: N --refers to the required motor power, which refers to the total power of class I and II fans (kw);
PST - is the total resistance of the mine in the most difficult period (PA);
Q - total air volume in the most difficult period of the mine (m3 / s)
鈥?- check the actual operating condition efficiency of this sample according to PST and Q parameters;
K - power reserve coefficient, generally k = 1.1 ~ 1.5;
According to the above-mentioned total power n, according to the value of N / 2, and referring to the motor power level series, two motors with the same power shall be selected, and Ni + NII 鈮?n, which needs to be specially pointed out; when a certain type of motor is selected, and the value of n is calculated according to the above formula, after selecting the motor Ni = NII, it shall be compared with the maximum power of single machine given in Table 2, if the value of Ni = NII is greater than that of single motor given in Table 2 Maximum power, just this type of fan is not applicable, you must choose another fan of larger specification.
If there is a large power gap between the motors required in the early and later stages of the mine, it can be compared economically. In the early stage, two motors with smaller power will be equipped, and in the later stage, they will be replaced with high-power motors. The main sample can make the motors operate under the condition of high power factor and efficiency, reduce power consumption and save power.
The design service life of DK (now FBCDZ) series fans is 20 years.
DK62(A)MAIN VENTILATION EQUIPMENT SPECIFICATION FAN
TYPE NO. Rotation speed (r/min) Power(kW) Air volume(m3/s) Static Pressure(Pa)
DK62-6129802脳227.4锝?8.7515锝?494
DK62-6139802脳308.1锝?3792锝?300
DK62-6139802脳378锝?5.4792锝?490
DK62-6149802脳3710.1锝?6918锝?550
DK62-6149802脳5510.1锝?1.7918锝?888
DK62-6159802脳7512.4锝?9.01054锝?315
DK62-6169802脳11015.0锝?7.31199锝?772
DK62-6179802脳13218.0锝?6.81353锝?258
DK62-6189802脳18521.4锝?7.41517锝?774
DK62-6199802脳22025.1锝?9.31690锝?319
DK62-6209802脳25029.3锝?2.51873锝?893
DK62-6219802脳35533.9锝?07.02065锝?497
DK62-8177402脳5513.6锝?2.9772锝?428
DK62-8187402脳7516.1锝?0.9865锝?722
DK62-8197402脳11019.0锝?0.0964锝?033
DK62-8207402脳13222.1锝?9.81068锝?360
DK62-8217402脳16025.6锝?0.81177锝?705
DK62-8227402脳20029.5锝?2.91292锝?066
DK62-8237402脳25033.7锝?06.21412锝?444
DK62-8247402脳31538.2锝?20.71538锝?839
DK62-8257402脳31543.2锝?36.41669锝?250
DK62-8267402脳45048.6锝?53.41805锝?679
DK62-8277402脳45054.4锝?71.81946锝?124
DK62-8287402脳71060.7锝?91.62093锝?586
DK62-10205902脳7517.6锝?5.7679锝?136
DK62-10215902脳9020.4锝?4.4748锝?355
DK62-10225902脳11023.5锝?4.1821锝?585
DK62-10235902脳13226.8锝?4.7898锝?825
DK62-10245902脳16030.5锝?6.2978锝?076
DK62-10255902脳18534.5锝?08.71061锝?338
DK62-10265902脳25038.8锝?22.31147锝?610
DK62-10275902脳25043.4锝?37.01237锝?893
DK62-10285902脳31548.4锝?52.81331锝?187
DK62-10295902脳35553.8锝?69.71427锝?491
DK62-10305902脳45059.5锝?87.91527锝?806
DK62-10325902脳56072.3锝?28.01738锝?468
DK62-10345902脳80086.7锝?73.41962锝?173
DK62-10365902脳1000102.9锝?24.72199锝?921
DK62-12244902脳11025.3锝?9.9674锝?122
DK62-12254902脳11028.6锝?0.3732锝?302
DK62-12264902脳13232.2锝?01.6791锝?490
DK62-12274902脳16036.1锝?13.8853锝?685
DK62-12284902脳20040.2锝?26.9918锝?888
DK62-12294902脳20044.7锝?40.9985锝?098
DK62-12304902脳25049.5锝?56.01054锝?315
DK62-12324902脳35560.0锝?89.41199锝?772
DK62-12344902脳45072.0锝?27.11353锝?258
DK62-12364902脳56085.5锝?69.61517锝?774
DK62-12384902脳800100.5锝?17.11690锝?319
DK62-12404902脳1000171.2锝?70.01873锝?893
DK62(B)MAIN VENTILATION EQUIPMENT SPECIFICATION
TYPE NO. Rotation speed (r/min) Power(kW) Air volume(m3/s) Static Pressure(Pa)
DK62-6159802脳5514.5锝?6.6805锝?335
DK62-6169802脳7517.6锝?4.4916锝?656
DK62-6179802脳9021.1锝?3.31035锝?999
DK62-6189802脳13225.0锝?3.31160锝?362
DK62-6199802脳16029.4锝?4.41292锝?746
DK62-6209802脳22034.3锝?6.81432锝?150
DK62-6219802脳28039.7锝?00.51579锝?576
DK62-8187402脳5518.9锝?7.8661锝?917
DK62-8197402脳7522.2锝?6.2737锝?136
DK62-8207402脳9025.9锝?5.5816锝?367
DK62-8217402脳13230.0锝?5.9900锝?609
DK62-8227402脳16034.5锝?7.2988锝?863
DK62-8237402脳18539.4锝?9.71080锝?130
DK62-8247402脳22044.8锝濱13.21176锝?408
DK62-8257402脳28050.6锝?28.01276锝?698
DK62-8267402脳35556.9锝?44.01380锝?999
DK62-8277402脳35563.7锝?61.01488锝?313
DK62-8287402脳45071.1锝?79.81600锝?638
DK62-10215902脳7523.9锝?0.5572锝?659
DK62-10225902脳7527.5锝?9.5628锝?820
DK62-10235902脳9031.4锝?9.5686锝?990
DK62-10245902脳11035.7锝?0.3747锝?166
DK62-10255902脳16040.3锝?02.1811锝?351
DK62-10265902脳18545.4锝?14.8877锝?542
DK62-10275902脳20050.8锝?28.6946锝?742
DK62-10285902脳25056.7锝?43.41017锝?949
DK62-10295902脳25063.0锝?59.31091锝?163
DK62-10305902脳31569.7锝?76.41168锝?385
DK62-10325902脳45084.6锝?14.01329锝?85J
DK62-10345902脳560101.5锝?56.71500锝?348
DK62-10365902脳710120.4锝?04.71682锝?874
DK62-12254902脳11033.5锝?4.8559锝?621
DK62-12264902脳11037.7锝?5.3605锝?754
DK62-12274902脳13242.2锝?06.8652锝?891
DK62-12284902脳16047.1锝?19.1702锝?034
DK62-12294902脳16052.3锝?32.3753锝?182
DK62-12304902脳20057.9锝?46.5806锝?335
DK62-12324902脳25070.3锝?77.7916锝?656
DK62-12344902脳31584.3锝?13.21035锝?999
DK62-12364902脳450100.0锝?53.11160锝?362
DK62-12384902脳560117.6锝?97.61292锝?746
DK62-12404902脳710137.2锝?47.21432锝?150
DK62-12424902脳1000158.8锝?01.91579锝?576
DK62-12444902脳1250182.6锝?62.11733锝?022
DK54MAIN VENTILATION FAN SPECIFICATION FAN
TYPE NO. Rotation speed (r/min) Power(kW) Air volume(m3/s) Static Pressure(Pa)
DK54-6129802脳18.512锝?6400锝?500
DK54-6139802脳3015.2锝?3.7463锝?750
DK54-6149802脳4518.9锝?2.1537锝?029
DK54-6159802脳5523.3锝?1.7617锝?340
DK54-6169802脳7528.3锝?2.8702锝?560
DK54-6179802脳11033.9锝?5.3792锝?992
DK54-6189802脳13240.2锝?9.4888锝?354
DK54-6199802脳18547.3锝?05.0989锝?737
DK54-6209802脳22055.0锝?23.01096锝?141
DK54-6219802脳22034.3锝?6.81432锝?150
DK54-8187402脳7530.0锝?8.0506锝?913
DK54-8197402脳9036.0锝?9.0564锝?131
DK54-8207402脳11042.0锝?3.0625锝?361
DK54-8217402脳13248.0锝?07.0670锝?603
DK54-8227402脳16055.0锝?23.0756锝?857
DK54-8237402脳20063.0锝?41.0820锝?125
DK54-8247402脳25072.0锝?60.0900锝?400
DK54-8257402脳31581.0锝?81.0977锝?689
DK54-8267402脳35592.0锝?04.01056锝?990
DK54-10245902脳13256.0锝?25.0552锝?090
DK54-10255902脳16064.0锝?42.0600锝?266
DK54-10265902脳18572.0锝?60.0649锝?450
DK54-10275902脳22080.0锝?79.0700锝?643
DK54-10285902脳25090.0锝?00.0752锝?843
DK54-10295902脳315100.0锝?45.0852锝?220
DK54-10305902脳355110.0锝?71.0864锝?264
DK54-10315902脳450122.0锝?62.0950锝?400
DK54-10325902脳560132.0锝?88.0980锝?650
DK54-10335902脳630143.0锝?18.01050锝?850
DK54-10345902脳710160.0锝?44.01050锝?100
DK54-12354902脳560148.0锝?24.0900锝?250
DK54-12364902脳630162.0锝?42.0950锝?450
DK54-12374902脳710178.0锝?80.0980锝?620
DK54-12384902脳800192.0锝?16.01050锝?800
DK54-12394902脳900205.0锝?52.01100锝?030
DK54-12404902脳1000220.0锝?83.01150锝?230
DK54-12414902脳1200240.0锝?20.01200锝?450
DK54-12424902脳1300255.0锝?60.01300锝?650Underground Ventilation Systems
website:http://www.zongdamining.com/underground-ventilation-systems/
