Study Underground Old Slope Activation and Influences on Environmental Safety Induced by Open Pit Mining

Abstract:

The long-term ground severe deformation and destruction induced by open pit and underground mining can badly affect the safety of surrounding environment. This problem is different from ground deformation and destruction induced by single mining. Based on chronological relationship between two kinds of mining and its corresponding deformation law under a practical engineering, the main reasons for long-term deformation and the deformation mechanism were revealed in this paper. Starting with the displacement mechanism, a method of horizontal movement coefficient was put forward to distinguish the movement property. Therefore, the impacts on two components of displacement vector can be distinguished, and then the basis for the proper analysis of ground deformation would be reached. At the same time, the ground deformation zone and the failure zone caused by subsequent open pit mining would be predicted, and the range of the failure zone would be gotten, providing a basis for safety decision.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 2825-2832
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.2825
• Online since: February 2013
• Authors: Shi Guo Sun, Chun Sheng Wang, Yan Yan He, Xiu Ming Xu
• Keywords: Activation Effect of Mining Area, Environmental Safety, Horizontal Movement Coefficient, Open Pit and Underground Mining

References

[1] Shiguo Sun, Combined effect of underground and open pit mining and slope deformation mechanism, Chinese Journal of Rock Mechanics and Engineering, 1999, 18(5): 497～502.

[2] Shiguo Sun, Deformation grey prediction for the open-pit slope & hillside complexes, Journal of Liaoning Technical University, 2002, 21(6): 696～699.

[3] Shiguo Sun, Study of prediction method in random medium theory for the open-pit slope & hillside complexes, Chinese Journal of Geotechnical Engineering, 2002, 24(3): 340～342.

[4] Shiguo Sun, Study of sliding mechanism for slope rock mass due to the excavation from open pit mining to underground mining, Chinese Journal of Rock Mechanics and Engineering, 2000, 19(1): 126～129.

[5] Shiguo Sun, Observations of long-term severe ground deformation induced by combined mining, Chinese Journal of Geotechnical Engineering, 2000, 22(1): 136～139.

[6] Shiguo Sun, Study on dynamic monitoring and the failure mode of slope rock mass, China Mining Magazine, 2000, (S1): 55～57.

[7] Shiguo Sun, Modeling experimental study on disturbance of slope rock mass stability by excavation and its slide mechanism, Journal of Engineering Geology, 2000, 8(3): 312～315.

[8] Shiguo Sun, Study on the slide law of slope rock mass and its numerical analysis under combined mining, Journal of University of Science and Technology Beijing, 1999, (5): 410～417.