|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Mechanics of rib spalling of high coal walls under fully-mechanized mining显示文摘为了解决高煤的肋骨 spalling 的问题,围在充分使机械化(HCWFM ) 矿,我们使用了损坏力学的原则分析煤墙肋骨 spalling。煤墙肋骨 spalling 是的结果表演到某个度,发展的宏表演微裂缝。我们造了一个机械模型模仿损坏到煤墙的前面,执行了损坏参数的理论计算,在煤墙肋骨 spalling 上分析了采矿高度,原来的裂缝,缝接强度,水平应力,煤墙的垂直排水量和另外的参数的效果,它与我们的地大小和数字模拟的结果一致很好。控制煤墙肋骨 spalling 的钥匙是在煤墙中控制裂缝的开发。加速推进工作的脸的速度,改进支持的设定的负担和警卫板的水平力量,加强煤围并且另外的技术措施能有效地在 HCWFM 脸减少煤墙和控制煤墙肋骨 spalling 的损坏的度。 | Yuan Yong Tu Shihao Wu Qi Ma Xiaotao Tu Hongsheng Sun Lulu | 2011 | Mining Science and Technology2011，21，1： | 9 |
| 2 | Deformation failure mechanism and application of the backfill along the goaf-side retained roadway显示文摘In order to determine the rational width of backfill in the goaf-side retained roadway, the deformation failure mechanism of surrounding rock in retained roadway is studied in the use of theoretical analysis, numerical simulation, etc., when the width of backfill is different. The results show that: with the increase of backfill width, the roof deformation above the backfill decreases; the outside of backfill obviously suffers from greater stress compared to the inner side of backfill; the damage firstly appears in the intersection of top backfill and roof; the plastic failure area is mainly distributed in the roof and floor of inside the roadway; 2 m wide backfill in the goaf-side retained roadway can meet the requirements of roadway deformation. Based on the original combination support of 'anchor-mesh-belt-lock' in the haulage-track roadway, the study also considers the reinforced support of 'anchor-mesh-belt' above the backfill, and 50 m ahead of working face, and 200 m behind the working face. This kind of support achieves a good result. The roadway deformation of field measurement shows that it can satisfy the need of the next working face. | Xue Deping Wang Jianpeng Tu Hongsheng Wang Fangtian Zhao Jie | 2013 | International Journal of Mining Science and Technology2013，23，3： | 7 |
| 3 | Theoretical analysis on the deformation characteristics of coal wall in a longwall top coal caving face显示文摘Against the background of analyzing coal wall stability in 14101 fully mechanized longwall top coal caving face in Majialiang coal mine,based on the torque equilibrium of the coal wall,shield support and the roof strata,an elastic mechanics model was established to calculate the stress applied on the coal wall.The displacement method was used to obtain the stress and deformation distributions of the coal wall.This study also researched the influence of support resistance,protective pressure to the coal wall,fracture position of the main roof and mining height on the coal wall deformation.The following conclusions are drawn:(1) The shorter the distance from the longwall face,the greater the vertical compressive stress and horizontal tensile stress borne by the coal wall.The coal wall is prone to failure in the form of compressive-shear and tension;(2) With increasing support resistance,the revolution angle of the main roof decreases linearly.As the support resistance and protective force supplied by the face guard increases,the maximum deformation of the coal wall decreases linearly;(3) As the face approaches the fracture position of the main roof,coal wall horizontal deformation increases significantly,and the coal wall is prone to instability;and(4) The best mining height of 14101 longwall face is 3.0 m. | Bai Qingsheng Tu Shihao Li Zhaoxin Tu Hongsheng | 2015 | International Journal of Mining Science and Technology2015，25，2： | 5 |
| 4 | Mechanisms of support failure and prevention measures under double-layer room mining gobs——A case study: Shigetai coal mine显示文摘In the practice of mining shallow buried ultra-close seams,support failure tends to occur during the process of longwall undermining beneath two layers of room mining goaf(TLRMG).In this paper,the factors causing support failure are summarized into geology and mining technology.Combining column lithology and composite beam theory,the key stratum of the rock strata is determined.A finite element numerical simulation is used to analyze the overlying load distribution rule of the main roof for different plane positions of the upper and lower room mining pillars.The tributary area theory(TAT)is adopted to analyze the vertical load distribution of each pillar,and dynamic models of coal pillar instability and main roof fracture are established.Through key block instability analysis,two critical moments are established,of which critical moment A has the greater dynamic load strength.Great economic losses and safety hazards are created by the dynamic load of the fracturing of the main roof.To reduce these negative effects,a method of pulling out supports is developed and two alternative measures for support failure prevention are proposed:reinforcing stope supports in conjunction with reducing mining height,or drilling ground holes to pre-split the main roof.Based on a comprehensive consideration of economic factors and the two categories of support failure causes,the method of reinforcing stope supports while reducing mining height was selected for use on the mining site. | Defu Zhu Shihao Tu Hongsheng Tu Zhenqian Yang | 2019 | International Journal of Mining Science and Technology2019，29，6： | 4 |
| 5 | Mechanics of rib spalling of high coal walls under fully-mechanized mining显示文摘 | Yuan Yong Tu Shihao Wu Qi Ma Xiaotao Tu Hongsheng Sun Lulu | 2011 | Mining Science and Technology (China)2011，，1： | 2 |
| 6 | Technology of back stoping from level floors in gateway and pillar mining areas of extra-thick seams显示文摘According to the special requirements of secondary mining of resources in gateway-and-pillar goaf in extra-thick seams of Shanxi, this paper presents a technical proposal of back stoping from level floors.Numerical simulation and theoretical analysis are used to investigate the compaction characteristics of cavities under stress as well as an appropriate mining height of the primary-mining layer based on different mining widths and pillar widths. For Yangjian coal mine, the mining thickness of the first seam during back stoping from level floor is determined to be 3 m, which meets the relevant requirements.Gateway-and-pillar goaf of a single layer has a range of influence of 9 m vertically. If gateway-and-pillar goaf occurs both in 9-1 and 9-5 layers, the range is extended to within 11.2 m. When the mining width of a gateway is less than 2 m or larger than 5 m, the gateway-and-pillar goaf in the upper layer of the primary-mining seam can be filled in and compacted after stoping. When the working face is 2 m away from the gateway and pillar before entering into it and after passing through it, the coal body under the gateway and pillar is subjected to relatively high stress. During mining of the upper layer, moreover, the working face should interlock the goaf in primary-mining layer for 20 m. | Tu Hongsheng Tu Shihao Zhang Xiaogang Li Zhaoxin Jia Shuai | 2014 | International Journal of Mining Science and Technology2014，24，2： | 2 |
| 7 | In vitro inhibition of CSFV replication by multiple siRNA expression显示文摘 | Jiangnan Li Yajuan Dai Shuai Liu Huancheng Guo Tiedong Wang Hongsheng Ouyang Changchun Tu | 2011 | Antiviral Research2011，，2： | 1 |
| 8 | Auxiliary transportation mode in a fully-mechanized face in a nearly horizontal thin coal seam显示文摘On fully-mechanized faces in nearly horizontal thin coal seams(NHTCS), the selection of the auxiliary transportation mode is difficult. Generally, auxiliary transportation mainly includes trackless or rail transportation. Combined with a familiar NHTCS fully-mechanized face, a multi-attribute decisionmaking model was set up for the decision. The index weight was objectively determined with the fuzzy number and entropy method. The priority order of auxiliary transportation modes was obtained from the Preference Ranking Organization Method for Enrichment Evaluation(PROMETHEE). The results show that: the net flow of the mode can be expressed by the function of the surrounding rock deformation of the roadway, the dimension of equipment and the thickness of the coal seam; Based on the cost type index, there is a positive correlation between the net flow with the height and width of the trackless auxiliary transportation equipment, respectively. The trackless auxiliary transportation equipment selection principle should be ‘‘height first then width'. Combined with the field application of the trackless auxiliary transportation in Liangshuijing coal mine, the proper method to achieve the safe and high-efficient exploitation of a NHTCS fully-mechanized face is trackless tyred vehicle auxiliary transportation. | Wang Chen Tu Shihao Zhang Lei Yang Qianlong Tu Hongsheng | 2015 | International Journal of Mining Science and Technology2015，25，6： | 1 |
| 9 | Mechanics of rib spalling of high coal walls under fully-mechanized mining显示文摘 | Yuan Yong Tu Shihao Wu Qi Ma Xiaotao Tu Hongsheng Sun Lulu | 2011 | Mining Science and Technology (China)2011，，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员