Research on the Effect of the Mine Waste Dump on the Stability of Tunnels Below in the Quangninh Coal Area by Numecical Method

• Autorzy: Van Kien Dang , Vo Trong Hung , Bui Xuan Nam , Nguyen Huu Sa

Identyfikatory

DOI

10.29227/IM-2023-02-11

Warianty tytułu

PL

Badania wpływu składowiska odpadów kopalnianych na stabilność tuneli połozonych poniżej w obszarze węglowym Quangninh metodą numeryczną

• Konferencja: POL-VIET 2023 — the 7th International Conference POL-VIET
• Języki publikacji: EN

Abstrakty

EN

Nowadays, there are many underground coal mines in Quang Ninh, Vietnam have been exploiting coal seams below the mine waste dump such as Khe Cham II, Mong Duong, Mao Khe, and Ha Lam… Coal Company. Many mine waste dumps have reached the height of dumping from 400m, especially up to over 400m. The rock mass pressure due to the weight of the rock mass in the mine waste dump is considered an artificial pressure formed from the process of dumping soil and rock, it will be part of the pressure acting on the furnace lines located under the mine waste dump. The paper presents the current status of the mine waste dump and the coal seams that have been and will be exploited located below the mining waste dump in Cam Pha Quang Ninh and based on the actual conditions of the Bang Nau, Khe Cham II coal mine waste dump. The studies used the 2D FEM RS2 program to create simulation models with the mine waste dump to study the primary stress distribution in the rock mass. The objective of this study is to highlight the influence of the relationship location of tunnels below with the inclined coal/rock mass layer on the rock support behavior of the underground tunnels in the Quang Ninh coal area. The simulation results will help the consulting and construction companies to calculate the rock pressure acting on the tunnels located under the mining waste dump.

Słowa kluczowe

EN

Mine Pressure; mine waste dump; rock support behavior; inclined coal/rock mass layer; yielded zone

PL

tunele; metoda numeryczna; Wietnam

• Wydawca: Polskie Towarzystwo Przeróbki Kopalin
• Czasopismo: Inżynieria Mineralna
• Rocznik: 2023
• Tom: no. 2, vol. 1
• Strony: 49--56
• Opis fizyczny: Biliogr. 9 poz., rys., tab., zdj.

Twórcy

autor

Van Kien Dang

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Vo Trong Hung

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Bui Xuan Nam

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Nguyen Huu Sa

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

Bibliografia

• 1. Institute of Science and Technology- Vinacomin - 2015, Final Report TKV group project “Research, develop standards and inspection procedures for rock support in undergound mining in Quang Ninh area”, Hanoi, Vietnam, 2015.
• 2. Tran Tuan Minh. Research on choosing reasonable and flexible steel-resistant structures for basic stone kilns in thick seams and steep slopes, applied to Uong Bi-Quang Ninh coal area. Ministry of education and tranining level project. B2018.MDA. Hanoi, Vietnam, 2018.
• 3. Institute of Mining Science and Technology - Vinacomin. The final report on the topic at the level of TKV Group. “Study on stability, selection of parameters, discharge sequence, drainage solutions and protection works suitable to climate change situation at opencast coal mine dumps of TKV”. Hanoi, 2016.
• 4. Pham Minh Duc, Nguyen Van Phuong, Nong Viet Hung, Trinh Dang Hung, Nghiem Xuan La, Ngo Van Dinh et al. Report on the TKV group project "Research and application of technical and technological solutions to prevent coal mines in conditions of high mine pressure in some Quang Ninh underground mines". Institute of Mining Science and Technology. Hanoi- 2005.
• 5. E. Hoek, P.K. Kaiser, W.F. Bawden, Support of underground excavation in hard rock. Rotterdam, Balkema, 1995.
• 6. Gale W. J. and Fabianczyk M.W. Design approach to assess coal mine roadway stability and support requirements. Australia 1993.
• 7. Sicherheit gegen Niederbruch im Untertagebau. Alexander H. Schneider. ETH Zürich, 2002
• 8. Paul Avinash et al., Design of Support System and Stability Evaluation for Underground Workings of Gare Palma Coal Mine - A Case Study. Modelling, Measurement and Control C. September 2018.
• 9. Walawska B, Szymanek A, Szymanek P. Impact of decomposition temperature on the surface area of sodium bicarbonate Przemysł Chemiczny 2012, pp.1049-1052

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu „Społeczna odpowiedzialność nauki” - moduł: Popularyzacja nauki i promocja sportu (2022-2023)