期刊文献+
共找到6篇文章
< 1 >
每页显示 20 50 100
矿山可持续发展与绿色采矿技术研究
1
作者 胡建立 《中国金属通报》 2024年第17期55-57,共3页
文章以矿山可持续发展与绿色采矿技术研究进行讨论,对我国矿山开采造成的生态环境问题及成因进行了分析,矿山开采对土地资源、水资源及大气造成严重破坏与污染,造成这一现象的主要因素在于矿山缺乏可持续发展理念指导及综合规划不合理... 文章以矿山可持续发展与绿色采矿技术研究进行讨论,对我国矿山开采造成的生态环境问题及成因进行了分析,矿山开采对土地资源、水资源及大气造成严重破坏与污染,造成这一现象的主要因素在于矿山缺乏可持续发展理念指导及综合规划不合理。本文提出保水绿色开采技术、矸石处理技术、瓦斯技术、资源综合利用技术、无废开采技术等矿山绿色采矿技术后,提出绿色采矿技术应用建议,通过加强矿山勘察做好前期规划工作,建立绿色开采标准实行顶层设计,加大绿色采矿技术的监管力度,提高环境保护管理力度。 展开更多
关键词 矿山可持续发展 绿色采矿技术 采矿技术分析
下载PDF
Analytical model and application of stress distribution on mining coal floor 被引量:19
2
作者 ZHU Shu-yun JIAN Zhen-quan +2 位作者 HOU Hong-liang XIAO Wei-guo YAO Pu 《Journal of China University of Mining and Technology》 EI 2008年第1期13-17,共5页
Given the analysis of underground pressure, a stress calculation model of coal floor stress has been established based on a theory of elasticity. The model presents the law of stress distribution on the relatively fix... Given the analysis of underground pressure, a stress calculation model of coal floor stress has been established based on a theory of elasticity. The model presents the law of stress distribution on the relatively fixed position of the mining coal floor: the extent of stress variation in a fixed floor position decreases gradually along with depth, the decreasing rate of the vertical stress is clearly larger than that of the horizontal stress at a specific depth. The direction of the maximum principal stress changes gradually from a vertical direction to a horizontal direction with the advance of the working face. The deformation and permeability of the rock mass of the coal floor are obtained by contrasting the difference of the principal stress established from theoretical calculations with curves of stress-strain and permeability-strain from tests, which is an important mechanical basis for preventing water inrush from confined aauifers. 展开更多
关键词 MODEL coal floor stress distribution ANALYSIS
下载PDF
Optimization design of deep lean-ore mining and safety evaluation
3
作者 YU Wei-jian GAO Qian 《Journal of Coal Science & Engineering(China)》 2010年第2期163-169,共7页
In order to settle the mining optimization design and safety problem of the above 1 150 m pillar of No.1 ore-body in No.H Mining Jinchuan, the lean-ore above 1 250 m, the 1 150 m horizontal pillar and the ore-body bel... In order to settle the mining optimization design and safety problem of the above 1 150 m pillar of No.1 ore-body in No.H Mining Jinchuan, the lean-ore above 1 250 m, the 1 150 m horizontal pillar and the ore-body below 1 100 m regarded as research objects based on the original design project, and nine calculation schemes on different mining sequence and different fill body strength were put forward based on cement-sand ratio of 1 : 4, 1: 12 and 1 : 24. Calculation parameters were got by the back analysis method of field monitoring data, and the FLAC2D program was applied to compute for these schemes, stress and displacement of ground settlement, shaft and stope roof were analyzed, and some conclusions were got. Results show that the intensity of filling body and the mining technique have very important effect on controlling settlement and stability of surrounding rock; Developing of lean ore have some influences to the 16th return air filling shaft, especially for 1 500--1 400 m of the shaft; The best project is the first project. This research supply some technique references and safety appraisals for the mining of lean-ore of No.II Mining Jinchuan. 展开更多
关键词 lean-ore mining numerical analysis optimization design safety evaluation
下载PDF
Rock bolt mechanical analysis and its application to engineering
4
作者 郭凌云 肖明 肖迎春 《Journal of Coal Science & Engineering(China)》 2008年第1期58-61,共4页
Combined with the 3D FEM,end-anchored anchorage bolts were simulated by implicit anchorage bolt element.Implicit anchorage bolt elements hide in the elements of rock mass and extremely simplify the element subdivision... Combined with the 3D FEM,end-anchored anchorage bolts were simulated by implicit anchorage bolt element.Implicit anchorage bolt elements hide in the elements of rock mass and extremely simplify the element subdivision.The calculated value of an- chorage bolt stress is larger than the measured one for the most time.we further analyzed the reciprocity of anchorage bolt and rock mass,and then deduced the analytical equa- tions of anchorage bolt stress and rock mass deformation under elasto-plastic state.The results indicate that it is essential to revise the anchorage bolts stress by using the formu- las deduced when rock mass is softened or significantly deformed.Finally,a case study indicates that the calculated results agree with those measured.Some helpful methods are offerd for more accurate simulation of the support effect and anchorage bolts real stress state. 展开更多
关键词 implicit element of bolt mechanical analysis on bolt elasto-plastic analysis
下载PDF
RATIONAL CHOICE OF TECHNICAL REFORM SCHEMES OF MINE NO.1,PINGDINGSHAN MINING BUREAU
5
作者 韩可琪 王玉浚 张先尘 《Journal of China University of Mining and Technology》 1990年第1期31-41,共11页
Seven schemes for the developing extension, four schemes for the mining of the whole field and five schemes for the parameter are put forward in this paper to rational choice of technical reform schemes of Mine No.1. ... Seven schemes for the developing extension, four schemes for the mining of the whole field and five schemes for the parameter are put forward in this paper to rational choice of technical reform schemes of Mine No.1. Pingdingshan Mining Bureau.On the basis of conventional technical analysis, an optimum economy-mathmetical model of the developing preparatory schemes is worked out and a synthetic optimum is carried out. 展开更多
关键词 coal mine technical reform optimum model FEASIBILITY
下载PDF
Numerical analysis of coal-gas flow and pressure relief on the mining method of extreme short-range protective strata
6
作者 雷文杰 《Journal of Coal Science & Engineering(China)》 2008年第1期62-66,共5页
The coal-gas existing condition was ameliorated in the coal seams prone to coal-gas outburst adopting the mining method of protective strata.The gas volume and the gas pressure were reduced synchronously in the protec... The coal-gas existing condition was ameliorated in the coal seams prone to coal-gas outburst adopting the mining method of protective strata.The gas volume and the gas pressure were reduced synchronously in the protected coal seam,and the coal seam of high permeability prone to the coal-gas outburst was changed into that of low perme- ability with no proneness to the coal-gas outburst.The D_(15)coal seam was treated as the protective strata,and the D_(16-17)coal seam was treated as the protected strata in the Fifth coal mine in the Pingdingshan Coal Mining Group.The distance between the two coal seams was 5 m averagely,clarified into the extreme short-range protective strata.The numerical analysis was based on the theory of the porous media flow with the finite ele- ment method.The gas flow process and the change mechanism of the coal-gas pressure were analyzed in the process of mining the protective strata. 展开更多
关键词 extreme short-range protective strata the porous media mining procedure coal-gas flow coal-gas pressure
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部