Application of staggered freezing method to shaft sinking in Jining No. 3 coal mine
Abstract
Jining No.3 coal mine located in Yanzhou coal mine area consists of three shafts including a main shaft, an auxiliary shaft and a center air shaft with a designed annual production of five million ton coal. Staggered freezing technique was applied to build the three shafts. The paper describes the aspects on ice wall design, freeze pipe arrangement and finite element analysis of ice wall process of the three shafts, with the emphasis on using shotcrete with wire-mesh as outer temporary shaft lining in frozen bedrock zone and using high-strength concrete mixed with silicon powder as inner shaft lining.
Fields of Study & Subjects
Geomechanics and Mining Engineering
Geoscience and Mining Technology
Civil and Geotechnical Engineering Research
Publication details
- Journal / source
- CRC Press eBooks
- Pages
- 519–523
- Publication date
- 26 January 2026
- Language
- EN
- Document type
- Book chapter