GB50070-2020······1

1 總則······10

2 術語······11

3 基本規定······13

4 礦井井下······17

4.1 供配電系統······17

4.2 電氣設備及其保護······18

4.3 電纜線路······20

4.4 電氣設備硐室······22

4.5 照明······23

4.6 保護接地······24

5 露天礦采礦場和排廢場······27

6 電力牽引······31

6.1 一般規定······31

6.2 直流牽引變電所······32

6.3 直流牽引網······33

7 選礦廠······39

7.1 供配電系統······39

7.2 工藝流程控制······40

8 主要固定設備······42

8.1 礦井提升機······42

8.2 礦井主通風機······44

8.3 礦井主排水泵······45

8.4 空氣壓縮機······45

8.5 帶式輸送機······46

8.6 貨運架空索道······46

本標準用詞說明······48

引用標準名錄······49

附：條文說明······50

2 術語······53

3 基本規定······54

4 礦井井下······60

4.1 供配電系統······60

4.2 電氣設備及其保護······11

4.4 電氣設備硐室······63

4.5 照明······65

4.6 保護接地······65

5 露天礦采礦場和排廢場······66

6 電力牽引······68

6.1 一般規定······68

6.2 直流牽引變電所······68

6.3 直流牽引網······70

7 選礦廠······72

7.1 供配電系統······72

7.2 工藝流程控制······75

8 主要固定設備······77

8.1 礦井提升機······77

8.5 帶式輸送機······77

8.6 貨運架空索道······77