Nghiên cứu sử dụng thép chữ “V” (SVPU) chống giữ các đường lò tiết diện lớn ở độ sâu lớn tại các mỏ hầm lò Quảng Ninh

- Authors: Thanh Trung Dang 1, Dinh Phuc Tran 2, Duc Minh Pham 2
Affiliations:
1 Hanoi University of Mining and Geology
2 Institute of Mining Science and Technology - Vinacomin
- *Corresponding:This email address is being protected from spambots. You need JavaScript enabled to view it.
- Received: 25th-Mar-2019
- Revised: 26th-Aug-2019
- Accepted: 10th-Oct-2019
- Online: 30th-Oct-2019
- Section: Underground and Mining Construction
Abstract:
To protectthe large cross-section underground constructions at large depths, some countries in the vvorld (such as Russia, Poland, Ukraine, etc.) have put into use V-shaped Steel (SVPU) replacing U-shaped Steel (SVP). Because, V-shaped Steel (SVPU) has many improvements in geometric cross-section characteristics, the mechanical properties and joints construction wich help to increase the load carrying capacity, bending, tvvisting and stability level. Nowadays, Quảng Ninh underground coal mines are going deeper, so that the applying the V-shaped Steel (SVPU) increases the stability and security level for underground constructions in mines.

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