|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Support technologies for deep and complex roadways in underground coal mines:a review显示文摘Based on geological and mining characteristics,coal mine roadways under complex conditions were divided into five types,for each type the deformation and damage characteristics of rocks surrounding roadways were analyzed.The recent developments of roadway support technologies were introduced abroad,based on the experiences of supports for deep and complex roadways from Germany,the United States and Australia.The history and achievements of roadway support technologies in China were detailed,including rock bolting,steel supports,grouting reinforcement and combined supports.Four typical support and reinforcement case studies were analyzed,including a high stressed roadway 1,000 m below the surface,a roadway surrounded by severely weak and broken rocks,a chamber surrounded by weak and broken rocks,and a roadway with very soft and swelling rocks.Based on studies and practices in many years,rock bolting has become the mainstream roadway support form in China coal mines,and steel supports,grouting reinforcement and combined supports have also been applied at proper occasions,which have provided reliable technical measures for the safe and high effective construction and mining of underground coal mines. | Hongpu Kang | 2014 | International Journal of Coal Science & Technology2014，1，3： | 117 |
| 2 | Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams显示文摘 | Jinhua Wang Bin Yu Hongpu Kang Guofa Wang Debing Mao Yuntao Liang Pengfei Jiang | 2015 | International Journal of Coal Science & Technology2015，2，2： | 57 |
| 3 | Deformation characteristics and reinforcement technology for entry subjected to mining-induced stresses显示文摘The entry at Zhangcun coal mine in Lu'an coal mining area in Shanxi Province suffered from severe mining-induced stresses with the heading face driven oppositely to an adjacent working face.In this paper,the characteristics of deformation and failure of the entry were investigated in terms of the tempo-spatial relations between heading and working faces through field study and numerical modeling.The three-dimensional(3D) finite difference models were built to investigate stresses,displacements and damages in the surrounding rocks of the entry and the working face.The field study includes selection of reinforcing methods and materials,design parameters,and determination of cable prestress.The monitoring data of entry deformation and stress along the cables during every stage were presented.The state of the reinforced entry was evaluated based on the monitoring data.The results demonstrate that before the heading face of the entry crosses the adjacent working face,the influence of advanced abutment pressure caused by adjacent working face upon the entry is not significant.After they cross each other,however,the lateral abutment pressure will have an evident impact on the entry.The displacement rate of the entry will be greatly increased and reaches a certain value within a certain distance between the heading face and the working face.Then,it will increase again with the presence of secondary mining-induced pressure on the entry when the present working face advances.The fully-grouted cable with short length,high strength and high prestress is an effective way to reinforce the entry suffering from severe mining-induced stresses,which greatly reduces the displacement and failure possibility of the entry.Finally,the principles and recommendations for reinforcing design of entries suffering from severe mining-induced stresses were proposed according to field study,numerical modeling and experiences from other coal mines.Problems encountered in field study and suggestions for reinforcement were also discussed. | Hongpu Kang Yongzheng Wu Fuqiang Gao | 2011 | Journal of Rock Mechanics and Geotechnical Engineering2011，3，3： | 11 |
| 4 | Tests and analysis of mechanical behaviours of rock bolt componentsfor China's coal mine roadways显示文摘A series of laboratory tests were performed to study the mechanical behaviours of newly developed high strength rock bolt components, including rebar, thread, plate, and domed washer. The characteristics of deformation and damage of each component were presented. The stress distribution of plate and domed washer was investigated through fi nite element modelling. The numerical results show that the yield and tensile strengths of the developed high strength rebar are 33.6%e58.3% and 17.2%e28.7% greater than those of the conventional rebar, respectively. The increase in yield strength was higher than that in tensile strength, suggesting an increase in yield to tensile strength ratio and a decrease in elongation. It is well-known that the thread processing may not be of high precision and accuracy as expected, which is characterised as rough thread surface, non-identical tooth height, toe stripping, and cracks in the surface.Hardening during thread processing tends to increase the thread yield and tensile strengths. In this paper, the typical deformation process of arch-shaped plate is classi fi ed into fi ve stages. The tested plates exhibited distinct deformation characteristics and bearing capacities due to variations in shape, size,material and presence of washer. It was observed that uneven bottom surface, low bearing arch and large radius of the transitional arc connecting bearing arch and bottom surface were the major reasons accounting for low load-bearing capacity of plates. The performance of domed washer has a close relation with the shape, size, strength, and deformation compatibility with plate. Stress concentration was observed on the periphery of the contact surface between domed washer and plate, which is signi fi cantly in fl uenced by the strength of domed washer and is considered to be 20%e30% higher than that of plate.Finally, a case study in the Datong coal mining district was presented, and the support pattern and effect of the developed rock bolt were described. | Hongpu Kang | 2015 | 岩石力学与工程学报2015，34，1： | 7 |
| 5 | Analysis on key bearing ring in surrounding rock of roadway显示文摘 | Kang Hongpu | 1997 | Mechanics in Engineering1997，19，1： | 1 |
| 6 | Grouting theories and technologies for the reinforcement of fractured rocks surrounding deep roadways显示文摘Grouting is an effective method to improve the integrity and stability of fractured rocks that surround deep roadways.After years of research and practice,various theories and a complete set of grouting technologies for deep roadways with fractured rocks have been developed and are widely applied in Chinese coal mining production.This paper systematically summarizes and analyzes the research results concerning the theory,design,materials,processes,and equipment for the grouting and reinforcement of fractured rocks surrounding deep roadways.Specifically,in terms of grouting methods,pregrouting,groutingwhile-excavation,and postgrouting methods are explored;in terms of grouting theory,backfill grouting,compaction grouting,infiltration grouting,and fracture grouting theories are studied.In addition,this paper also studies grouting borehole arrangement,water-cement ratio,grouting pressure,grouting volume,grout diffusion radius,and other grouting parameters and their determination methods.On this basis,this paper explores the physical and mechanical properties of organic and organic-inorganic composite grouting materials,and assess grouting reinforcement quality testing methods and instruments.Taken as the field cases,the application of pregrouting in front of heading faces,groutingwhile-excavation,and postgrouting in the Kouzidong coal mine are then introduced,and the effects of the grouting reinforcements are evaluated.This paper proposes a development direction for grouting technology based on problems existing in the grouting reinforcement of fractured rocks surrounding deep roadways. | Hongpu Kang Wenzhou Li Fuqiang Gao Jianwei Yang | 2023 | Deep Underground Science and Engineering2023，2，1： | 1 |
| 7 | STUDY OF DESTRESSING METHODS IN ROADWAY CORNERS显示文摘The destressing mechasm, rational parameters and adaptability of various kinds of destressing methods in roadway comers are analyzed in detril in thes paper. A new kind of destressing method by driving openings is proposed. The crux tha destressing openings control the deformation of surrounding rock of roadways, the affect to the destressing effect by the location and size of the destressing openings are analyzed by means of FEM. The results point out that the destressing openings can effectively reduce the floor heave nd side-to-side convergence of the roadway.protected. It has high destressing capacity and very extensive adaptability compared with the destressing methods near roadway contour, and it can be used to support the roadways in high-stress | KANG Hongpu(Beijing Coal Mining Institute Central Coal Mining Research InstituteBeijing, China) | 1995 | Journal of Coal Science & Engineering(China)1995，1，1： | 0 |
| 8 | Mechanical behaviors of coal measures and ground control technologies for China's deep coal mines-A review显示文摘This paper reviews the major achievements in terms of mechanical behaviors of coal measures,mining stress distribution characteristics and ground control in China’s deep underground coal mining.The three main aspects of this review are coal measure mechanics,mining disturbance mechanics,and rock support mechanics.Previous studies related to these three topics are reviewed,including the geo-mechanical properties of coal measures,distribution and evolution characteristics of mining-induced stresses,evolution characteristics of mining-induced structures,and principles and technologies of ground control in both deep roadways and longwall faces.A discussion is made to explain the structural and mechanical properties of coal measures in China’s deep coal mining practices,the types and dis-tribution characteristics of in situ stresses in underground coal mines,and the distribution of mining-induced stress that forms under different geological and engineering conditions.The theory of pre-tensioned rock bolting has been proved to be suitable for ground control of deep underground coal roadways.The use of combined ground control technology(e.g.ground support,rock mass modification,and destressing)has been demonstrated to be an effective measure for rock control of deep roadways.The developed hydraulic shields for 1000 m deep ultra-long working face can effectively improve the stability of surrounding rocks and mining efficiency in the longwall face.The ground control challenges in deep underground coal mines in China are discussed,and further research is recommended in terms of theory and technology for ground control in deep roadways and longwall faces. | Hongpu Kang Fuqiang Gao Gang Xu Huaiwei Ren | 2023 | Journal of Rock Mechanics and Geotechnical Engineering2023，15，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员