financial support from the Young Scientist Project of the National Key Research and Development Program of China(Grant No.2021YFC2900600);the Beijing Nova Program(Grant No.20220484057);The authors acknowledge the financial support from the Natural Sciences and Engineering Research Council of Canada(Grant No.RGPIN-2018-06902);industrial partners of the Research Institute on Mines and the Environment(RIME UQAT-Polytechnique:https://irme.ca/en/).
In the underhand cut-and-fill mining method,a sill mat(i.e.an artificial horizontal pillar)constructed by cemented backfill is essential to prevent mine workers from being directly exposed under problematic rock roofs...
the funding support from the National Natural Science Foundation of China(Grant Nos.52304101 and 52004206);the China Postdoctoral Science Foundation(Grant No.2023MD734215)。
Backfill is often employed in mining operations for ground support,with its positive impact on ground stability acknowledged in many underground mines.However,existing studies have predominantly focused only on the st...
supported by the National Natural Science Foundation of China (No.52374124);National Youth Science Foundation of China (No.52204135);Xing Liao Talent Plan (No.XLYC2202004);Young Elite Scientists Sponsorship Program by CAST (No.2023QNRC001);Liaoning Province International Science and Technology Cooperation Plan (No.2022JH2/1070004);Liaoning Natural Science Foundation Program (No.2022-BS-327)。
The 2D limit equilibrium method is widely used for slope stability analysis.However,with the advancement of dump engineering,composite slopes often exhibit significant 3D mechanical effects.Consequently,it is of signi...
financial support from the National Key Research and Development Program of China(No.2017YFC0602901)。
Based on the elastic thin plate theory,the main law of the ore roof failure was analyzed and the formula of the ore roof thickness was deduced.The results show that the tensile stress in the roof center accounts for t...
Projects(51974135,51704094)supported by the National Natural Science Foundation of China;Project(2016YFC0600802)supported by the National Key Research and Development Program of China;Project(2020M672226)supported by the China Postdoctoral Science Foundation。
The safety factor of roof under deep high stress is a quantitative index for evaluating roof stability.Based on the failure mode of surrounding rock of stope roof,the mechanics model of goaf roof is constructed,and th...
The stability of underground excavations has become an important issue in order to extend underground mining operations and extract deeper deposits. The increasing demand for Tin-Tungsten (Sn-W) for industry and its m...
Underground mining is an economically viable option for exploiting ore reserves deemed uneconomic after open pit mining. However, underground development can have adverse effects on the above existing open pit slope w...
The authors are grateful to the National Natural Science Foundation of China(Nos.51574007 and 51604007).
The key problem to be solved urgently is how to avoid the occurrence of support break-off and water inrush in the stoping of sandstone straight roof under the action of load transfer in unconsolidated aquifer.For this...
Project(488262-15)supported by the Natural Sciences and Engineering Research Council of Canada
Underground mines require complex construction activities including the shaft, levels, raises, winzes and ore passes. In an underground mine based on stoping method, orebody part(s) maximizing profit should be determi...