A new indicator for estimating the degree of mining-induced land subsidence: the overburden’s average GSI value DOI Creative Commons

Yaqiang Gong,

Jianfeng Zha,

Qingbiao Guo

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Jan. 3, 2024

Abstract Underground coal mining leads to land subsidence, which, in turn, results damage buildings and infrastructure, disturbs the original ecological environment, hinders sustainable development of cities. A reasonable estimation on other hand, is foundation for building protection, reclamation, environment reconstruction. However, when we applied existing subsidence theory deep areas Ordos coalfield western China, there was a significant deviation between estimations measurements. To explain such unusual case, propose using overburden’s average GSI (Geological Strength Index) value instead compressive strength (UCS) rock specimens better representation overall properties. By on-site monitoring historical data, provided evidence which supports that has much greater impact rates than UCS. Subsequently, investigated relationship three typical values via calibrated numerical model, revealing variation patterns maximum surface set at 30, 50, 75, respectively. Finally, basis measured simulated results, discussed non-conventional strip method control explained why it possible what are advantages behind. The proposed methods, findings, suggestions this paper therefore quite helpful researchers engineers who wish estimate mining-induced as well those particularly interested study science related subsidence.

Language: Английский

Dynamic response and damage evolution characteristics of uniform rocky slopes with unstable rock masses based on shaking table tests DOI Creative Commons
Dong Wang, Hao Wen

Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13

Published: March 12, 2025

Seismic activities often trigger catastrophic events including collapses and rockfalls on rocky slopes. This research endeavors to understand the dynamic behavior damage modes in uniform slopes with unstable rock masses. To achieve this objective, paper constructs a physical model of slope mass performs triaxial loading shaking table tests. Subsequently, seismo-dynamic responses associated are scrutinized, initiation deformation mechanisms hazardous revealed. Further, we obtained marginal spectral energy evolution characteristics measurement points both bedrock. deciphers weak structural plane. The results indicate that there distinct elevation surface amplification effects within slopes, which systematically lessened increasing seismic intensity. vertical is more sensitive high seismic-induced process masses split into three stages: trailing edge tension cracking, sliding planes, complete failure plane shear capacity. It also established Hilbert spectra effectively identified containing planes.

Language: Английский

Citations

0
A new indicator for estimating the degree of mining-induced land subsidence: the overburden’s average GSI value DOI Creative Commons

Yaqiang Gong,

Jianfeng Zha,

Qingbiao Guo

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Jan. 3, 2024

Abstract Underground coal mining leads to land subsidence, which, in turn, results damage buildings and infrastructure, disturbs the original ecological environment, hinders sustainable development of cities. A reasonable estimation on other hand, is foundation for building protection, reclamation, environment reconstruction. However, when we applied existing subsidence theory deep areas Ordos coalfield western China, there was a significant deviation between estimations measurements. To explain such unusual case, propose using overburden’s average GSI (Geological Strength Index) value instead compressive strength (UCS) rock specimens better representation overall properties. By on-site monitoring historical data, provided evidence which supports that has much greater impact rates than UCS. Subsequently, investigated relationship three typical values via calibrated numerical model, revealing variation patterns maximum surface set at 30, 50, 75, respectively. Finally, basis measured simulated results, discussed non-conventional strip method control explained why it possible what are advantages behind. The proposed methods, findings, suggestions this paper therefore quite helpful researchers engineers who wish estimate mining-induced as well those particularly interested study science related subsidence.

Language: Английский

Citations

2