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| 综采工作面煤壁片帮影响因素研究 | |
| 引用本文： | 宋振骐,梁盛开,汤建泉,卢国志.综采工作面煤壁片帮影响因素研究[J].湖南科技大学学报(自然科学版),2011,26(1). |
| 作者姓名： | 宋振骐 梁盛开 汤建泉 卢国志 |
| 作者单位： | 1. 中国矿业大学(北京)力学与建筑工程学院,北京,100083;山东科技大学采矿工程研究院,山东,泰安,271019 2. 中国矿业大学(北京)力学与建筑工程学院,北京,100083;贵州能发电力燃料开发有限公司,贵州,贵阳,550004 3. 山东科技大学采矿工程研究院,山东,泰安,271019 |
| 基金项目： | 国家自然科学基金项目(51009015,50874021,50574016); 辽宁省教育厅重点实验室项目(2009S006) |
| 摘 要： | 综放开采技术是厚煤层开采工艺的重要发展方向之一,采用三维有限元离散方法,研究了不同采高、不同采深、不同煤体硬度条件下煤壁片帮规律,得到了不同条件下规律拟合公式.结果表明:采高、采深、煤体硬度都影响煤体片帮;随着采深和煤体硬度增加,煤层片帮几率和片帮区范围加大;煤体硬度、采深对煤壁片帮范围影响较小;随着采高增大,煤壁支承压力峰值降低,深入煤体深度增加;煤壁片帮与采深、采高和煤体硬度呈非线性关系.该结果为进一步定量研究大采高条件下煤壁片帮影响因素提供了理论依据. |
| 关 键 词： | 煤壁片帮 采高 采深 煤体硬度 影响因素 |
Study on the influencing factors of coal wall rib spalling in fully mechanized working face |
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| SONG Zhen-qi,LIANG Sheng-kai,TANG Jian-quan,LU Guo-zhi.Study on the influencing factors of coal wall rib spalling in fully mechanized working face[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2011,26(1). | |
| Authors: | SONG Zhen-qi LIANG Sheng-kai TANG Jian-quan LU Guo-zhi |
| Institution: | SONG Zhen-qi1,2,LIANG Sheng-kai1,3,TANG Jian-quan2,LU Guo-zhi2 (1.School of Mechanics & Civil Engineering,China University of Mining & Technology(Beijing),Beijing 10008,China,2.Institute of Mining Engineering,Shandong University of Science and Technology,Tai'an 271019,3.Guizhou Nengfa Power Fuel Development CO.,Ltd.,Guiyang 550004,China) |
| Abstract: | Fully-mechanized caving technology is main derection in thick coal seam mining.3D finite element discretization method was used to study coal wall rib spalling law in different mining height,different mining depth and different coal hardness,and obtained the law fitting formula under different conditions.The result shows that mining height,mining depth and coal hardness all affect coal wall rib spalling,and with increase of them coal wall rib spalling probability and area also increase,but coal hardness and... |
| Keywords: | coal wall rib spalling mining height mining depth coal hardness influencing factors |
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