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Stability analysis of pumped storage hydropower plant in abandoned open-pit mine affected by dynamic surface subsidence of combined mining.
Li, Yang; Lei, Xinghai; Wang, Nan; Ren, Yuqi; Xia, Xue; Jin, Xiangyang; Li, Tiezheng.
Afiliación
  • Li Y; School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China.
  • Lei X; Inner Mongolia Research Institute, China University of Mining and Technology-Beijing, Beijing, 017004, Inner Mongolia, China.
  • Wang N; School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China. leixinghaicumtb@163.com.
  • Ren Y; School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China.
  • Xia X; School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China.
  • Jin X; School of Coal Engineering, Shanxi Datong University, Datong, 037003, China.
  • Li T; School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China.
Environ Sci Pollut Res Int ; 31(13): 19516-19542, 2024 Mar.
Article en En | MEDLINE | ID: mdl-38355863
ABSTRACT
The construction of a pumped storage hydropower plant (PSHP) in an abandoned open-pit mine is a potential alternative to green mining and energy storage, which can increase the utilization rate of renewable energy and develop residual resources of abandoned mines. Dynamic surface subsidence affected by combined underground and open-pit mining (CUOPM) seriously affects the construction and operation of the PSHP and is one of the critical scientific issues that needs to be solved immediately. The stability of the PSHP was analyzed and treatment scheme of the goafs was proposed based on on-site measurement, theoretical analysis, and numerical simulation. First, the distribution of goafs in the Haizhou open-pit mining area was investigated and surface subsidence value was obtained using InSAR technology and ground monitoring. Secondly, the surface subsidence mechanism affected by CUOPM is analyzed and indicates the subsidence maximum values and scope of influence are greater than those of single underground mining. A dynamic surface subsidence prediction model for combined mining is established based on the Knothe time function model. Thirdly, based on the CVISC model, the numerical calculation models were established by using FLAC3D, and the characteristics and laws of surface subsidence in different periods of CUOPM were studied. The comparative analysis of the observation results shows that the proposed model and numerical simulation calculation method have excellent applicability and accuracy. Finally, a stability evaluation method of PSHP was established, and the results of the evaluation show that the affected areas are the semi-ground powerhouse (SGPH) and the west side of the lower reservoir. The method of grouting filling was used to treat the goafs, and the results showed that it effectively alleviates the dynamic surface subsidence affected by CUOPM, and provides a safety guarantee for PSHP.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Minas de Carbón / Minería Tipo de estudio: Prognostic_studies Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Minas de Carbón / Minería Tipo de estudio: Prognostic_studies Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: China
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