(1. 北京科技大學 金屬礦山高效開采與安全教育部重點實驗室，北京100083；
2. 北京科技大學 土木與資源工程學院，北京 100083)
摘 要: 針對深部礦體充填開采條件下的上盤斜坡道穩(wěn)定性問題，通過數值模擬、機理研究和位移監(jiān)測等手段分析斜坡道穩(wěn)定性。首先，采用應力、位移、塑性區(qū)三個絕對指標和傾斜、曲率、水平變形三個相對指標評價數值模擬結果以及優(yōu)化礦體回采方案；然后，從地質條件、采礦工藝和充填效果角度探討斜坡道保持穩(wěn)定的原因；最后，通過現場監(jiān)測研究斜坡道和采場圍巖的位移變化規(guī)律。結果表明：不同回采方案開采后，斜坡道均有良好的穩(wěn)定性，且北區(qū)、中區(qū)礦體最優(yōu)回采方案分別是方案1、方案6；地質先決條件、采礦工藝科學和充填效果良好是使得斜坡道穩(wěn)定的原因；監(jiān)測點1~4的相對最大位移依次為3.9、2.6、5.8和7.0 mm，未發(fā)生明顯位移，斜坡道與采場圍巖穩(wěn)定性良好。
關鍵字: 深部開采；上盤斜坡道；穩(wěn)定性；數值模擬；機理研究；位移監(jiān)測
（1. Key Laboratory of High-efficient Mining and Safety of Metal, Ministry of Education, University of Science and Technology of Beijing, Beijing 100083, China;
2. School of Civil and Resource Engineering, University of Science and Technology of Beijing, Beijing 100083, China）
Abstract:In view of the ramp stability of the hanging wall under the condition of deep orebody filling mining, the ramp stability was analyzed by means of numerical simulation, mechanism research and displacement monitoring. First of all, three absolute indexes of stress, displacement and plastic area, and three relative indexes of inclination, curvature and horizontal deformation were used to evaluate the numerical simulation results and to optimize the mining scheme of the ore body. Then, the reasons for the stability of the ramp were discussed from the perspective of geological conditions, mining technology and filling effect. Finally, the displacement change rules of the ramp and the surrounding rock of the stope were studied through on-site monitoring. The results show that, after mining with different mining schemes, the ramp has good stability, and the best mining schemes of the ore body in the north area and the middle area are scheme 1 and scheme 6, respectively. The geological preconditions, scientific mining technology and good filling effect are the reasons for the stability of the ramp. The relative maximum displacements of monitoring points 1-4 are 3.9, 2.6, 5.8 and 7.0 mm in sequence, without obvious position, and the stabilities of slope and surrounding rock are good.
Key words: deep mining; hanging wall ramp; stability; numerical simulation; mechanism study; displacement monitoring
