| 1. | The main shaft grouting technology in pengzhuang coal mine
彭庄矿井主井注浆技术 |
| 2. | Technology improvement of main mine of tianan no . 4 coal mine
平煤天安四矿主井技术改造 |
| 3. | Reform in the decelerator of major shaft winch
关于主井绞车减速器的改造 |
| 4. | Freezing design of thick overburden in main shaft of xuehu mine
薛湖矿井主井深厚表土冻结设计 |
| 5. | Construction practice of main shaft freezing section of panbei mine
潘北矿主井冻结段施工实践 |
| 6. | Technical transformation of skip in main shaft of no . 2 xinji mine
新集二矿主井箕斗的技术改造 |
| 7. | Quality rapid construction of main mine shaft in xuandong no . 2 mine
宣东二矿主井井筒优质快速施工 |
| 8. | The construction of winch braking system in main well of renlou mine
任楼煤矿主井绞车制动系统改造 |
| 9. | Quick construction of main shaft wall in base rock period in hu xi coal mine
湖西矿主井井筒基岩段快速施工 |
| 10. | Method of main shaft wall construction expansion clay in lu xi coal mine
鲁西煤矿主井井筒施工膨胀性粘土段措施 |
