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| 1 | “三软”大采高综采面煤壁稳定性及其控制研究显示文摘为有效控制'三软'大采高综采面煤壁稳定性,以淮北矿业集团许疃煤矿7219面为工程背景,实测了'三软'煤层大采高综采面煤壁片帮特征,建立了采场煤壁'楔形'滑动体稳定性分析的力学模型,分析了'楔形'滑动体稳定性的关键影响因素。结果表明:'三软'大采高综采面煤壁片帮以上半部片落的'楔形体'滑落形式为主,'楔形'滑动体稳定系数K与C,Ph,μ呈正比关系,与W0,θ呈反比关系。通过提高支架初撑力、控制端面冒顶、加固煤壁、用好护帮板以及适当提高工作面推进速度等技术措施,7219面煤壁稳定性得到了有效控制。 | 袁永 屠世浩 马小涛 孙璐璐 白庆升 | 2012 | 采矿与安全工程学报2012，29，1： | 88 |
| 2 | 含夹矸厚煤层大采高仰采煤壁破坏机理与注浆加固技术显示文摘详细分析了煤壁破坏的一般机理,结合邢台东庞矿2612大采高工作面实际,总结了煤壁破坏的主要形式,建立了大采高仰采工作面含有夹矸煤层煤壁破坏的力学模型,得出了顶板压力、夹矸厚度、仰采角度、煤体内聚力等对煤壁稳定性有较大影响,其中缓解煤壁的顶板压力是防止煤壁破坏的最有效措施。通过理论分析、UDEC数值模拟等研究了夹矸煤层煤壁注浆加固的合理钻孔位置和参数,得出最佳的布孔位置是注浆孔要和煤壁破坏的起坏点位置一致。同时介绍了2612大采高工作面实际的煤壁注浆工艺和实施效果。 | 王家臣 杨印朝 孔德中 潘卫东 | 2014 | 采矿与安全工程学报2014，31，6： | 44 |
| 3 | 综采工作面液压支架跟机自动化工艺研究显示文摘针对综采工作面应用广泛的全截深双向割煤工艺特点,提出了一种涵盖中部跟机自动化、机头跟机自动化和机尾跟机自动化3个阶段的综采工作面液压支架跟机自动化工艺。依据液压支架动作类型及跟机动作距离,对中部跟机自动化工艺流程进行了分析;结合液压支架动作流程及采煤机运行轨迹,将机头、机尾跟机自动化工艺流程细分为割透煤壁、首次反复刹底、斜切进刀、割三角煤、二次反复刹底、向中部割煤6个阶段。应用表明,该工艺有效提高了液压支架跟机自动化水平。 | 高卫勇 张敏娟 | 2018 | 工矿自动化2018，44，11： | 18 |
| 4 | Failure mechanism and control technology of longwall coalface in large-cutting-height mining method显示文摘The stability control of longwall coalface is the key technology of large-cutting-height mining method.Therefore,a systematic study of the factors that affect coalface stability and its control technology is required in the development of large-cutting-height mining method in China. After the practical field observation and years of study,it was found that the more than 95% of failures in coalface are shear failure. The shear failure analysis model of coalface has been established,that can perform systematic study among factors such as mining height,coal mass strength,roof load,support resistance,and face flipper protecting plate horizontal force. Meanwhile,sensitivity analysis of factors influencing coalface stability showed that improving support capacity,cohesion of coal mass and decreasing roof load of coalface are the key to improve coalface stability. Numerical simulation of the factors affecting coalface stability has been performed using UDEC software and the results are consistent with the theoretical analysis. The coalface reinforcement technology of large-cutting-height mining method using the grouting combined with coir rope is presented. Laboratory tests have been carried out to verify its reinforcement effect and practical application has been implemented in several coal mines with good results.It has now become the main technology to reduce longwall coalface failure of large-cutting-height mining method. | Wang Jiachen Yang Shengli Kong Dezhong | 2016 | International Journal of Mining Science and Technology2016，26，1： | 7 |
| 5 | System dynamics model of the support-surrounding rock system in fully mechanized mining with large mining height face and its application显示文摘Fully mechanized mining with large mining height(FMMLMH)is widely used in thick coal seam mining face for its higher recovery ratio,especially where the thickness is less than 7.0 m.However,because of the great mining height and intense rock pressure,the coal wall rib spalling,roof falling and the instability of support occur more likely in FMMLMH working face,and the above three types of disasters interact with each other with complicated relationships.In order to get the relationship between each two of coal wall,roof,floor and support,and reduce the occurrence probability of the three types of disasters,we established the system dynamics(SD)model of the support-surrounding rock system which is composed of'coal wall-roof-floor-support'(CW-R-F-S)in a FMMLMH working face based on the condition of No.15104 working face in Sijiazhuang coal mine.With the software of Vensim,we also simulated the interaction process between each two factors of roof,floor,coal wall and the support.The results show that the SD model of'CW-R-F-S'system can reveal the complicated and interactive relationship clearly between the support and surrounding rock in the FMMLMH working face.By increasing the advancing speed of working face,the support resistance or the length of support guard,or by decreasing the tipto-face distance,the stability of'CW-R-F-S'system will be higher and the happening probability of the disasters such as coal wall rib spalling,roof falling or the instability of support will be lower.These research findings have been testified in field application in No.15104 working face,which can provide a new approach for researching the interaction relationship of support and surrounding rock. | Yuan Yong Tu Shihao Zhang Xiaogang Li Bo | 2013 | International Journal of Mining Science and Technology2013，23，6： | 7 |
| 6 | 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 |
| 7 | 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 |
| 8 | 煤层常量元素组分与煤壁片帮关联性研究显示文摘针对采场煤壁片帮难预测的问题,通过现场实测、实验室材料荧光测试与理论分析相结合的方法,从煤层的材料元素组分角度对煤壁中常量元素组分与其片帮难易程度的关联性进行研究。结果表明:煤壁片帮深度与常量元素含量具有明显相关性,与O,Al,Si含量呈正相关,与C,S,Fe,Ca含量呈负相关,关联性按权重排序为C>O>S>Al>Si>Fe>Ca。基于该结论,可通过煤层常量元素分析预测煤壁的片帮倾向性和其他力学特性。 | 刘国磊 王泽东 崔嵛 赵健 刘学征 | 2022 | 煤炭技术2022，41，10： | 0 |
| 9 | 厚煤层一次采全高支架围岩作用研究显示文摘支架围岩作用是影响煤矿大采高一次采全高技术效率的关键因素之一。文章以王庄煤矿8101大采高开采工作面为工程背景,综合运用理论分析、数值计算和相似模拟等手段,系统研究了支架-围岩的相互作用机理。得到了厚煤层一次采全高支架与围岩作用关系,确定了能够满足安全高效生产的所需的支架的工作阻力的计算方法;分析了煤壁片帮特征及片帮机理,大采高工作面煤壁破坏方式以拉裂式片帮为主,提出了对应的煤壁注浆加固技术。相关研究成果在指导现场实践过程中,托住了破碎直接顶,控制住了煤壁破坏,保证了工作面安全快速推进,取得了很好的效果。 | 王志强 连永权 倪亮 史晓东 | 2014 | 煤2014，23，6： | 0 |
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