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	基于覆岩损伤本构模型的高强度开采参数确定及减损效果评价
其他题名	Parameters determination of high-intensity mining and reduction effect evaluation based on damage constitutive model of overburden rock
	何祥; 张村; 赵毅鑫; 李全生; 韩鹏华; 陈见行
来源期刊	采矿与安全工程学报
ISSN	1673-3363
出版年	2021
卷号	38 期号:3 页码:439-448
中文摘要	西部矿区属于生态本底脆弱的干旱半干旱地区,煤炭资源的高强度开采加剧了矿区生态环境破坏。通过选择合理的开采参数(采高、面长、推进速度)既能保证工作面回采效率,又能减弱煤层开采引起的覆岩变形破坏。为此,本文基于损伤力学构建采动岩体损伤的本构模型,定义了覆岩损伤度指标定量表征开采扰动覆岩三维空间损伤程度。以西部矿区上湾煤矿地质条件为背景,将损伤本构方程嵌入至FLAC~(3D)数值模型,对比分析覆岩损伤度和导水裂隙带的面长和推进速度效应,建立覆岩损伤度与开采参数的定量关系并给出了12401工作面的合理开采参数:采高8.8 m,工作面长度为300 m,推进速度为13.47~20.58 m/d。同时,分析得出了推进速度对顶板损伤特征的影响机制:推进速度增加促使顶板抗拉强度升高,降低覆岩损伤程度。最后,利用不同推进速度情况下的相似模拟以及现场周期来压步距和地表裂隙发育特征实测结果验证了基于覆岩损伤度设计高强度开采参数的合理性。
英文摘要	The fragile ecological environment with arid and semiarid climate in the western mining area of China and high-intensity coal mining activities intensify ecological damage. Choosing reasonable mining parameters (i.e., mining height, panel width, advancing speed) can not only ensure the mining efficiency of a working face, but also weaken the overburden deformation and failures caused by coal seam mining. Therefore, in this paper, the damage constitutive model of mining-induced rock mass is constructed based on damage mechanics, and a damage degree index is defined to quantitatively characterize the damage degree of a mining disturbance overburden in a three-dimensional space. With geological conditions of Shangwan coalmine in the western mining area as the background, numerical models FLAC~(3D) embedded with damage constitutive equation were used to comparatively analyze the panel width effect and advancing speed effect between the overburden damage degree and the height of the water conducted fracture zone. Then, a quantitative correlation was established between the overburden damage degree and mining parameters, and the reasonable mining parameters of working face 12401 was provided: 8.8 m in mining height, 300 m in the working face length, and 13.47-20.58 m/d in advancing speed. Meanwhile, the influence mechanism of advancing speed on the damage characteristics of the roof was obtained: the increase in the advancing speed causes the roof tensile strength to increase, and reduces the damage degree of the overburden rock. The measured results of PWI and ground fissures have verified the validity with the overburden damage degree method to determine high-intensity mining parameters. The rationality of the design of mining parameters based on damage ratio was verified through similar simulation and field measured results of the periodic weighting interval and fracture development under different advancing speeds.
中文关键词	损伤本构模型 ; 导水裂隙带 ; 高强度开采 ; 工作面长度 ; 推进速度
英文关键词	damage constitutive model water conducted fracture zone high-intensity mining working face length advancing speed
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Mining & Mineral Processing
CSCD记录号	CSCD:6989758
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364914
作者单位	何祥, 国家能源集团有限责任公司;;中国矿业大学(北京)能源与矿业学院;;安徽理工大学矿业工程学院, 煤炭开采水资源保护与利用国家重点实验室;;煤炭资源与安全开采国家重点实验室;;, ;;;;淮南, 北京;;北京;;安徽 100011;;100083;;232001, 中国.; 张村, 国家能源集团有限责任公司;;中国矿业大学(北京)能源与矿业学院, 煤炭开采水资源保护与利用国家重点实验室;;煤炭资源与安全开采国家重点实验室, ;;, 北京;;北京 100011;;100083, 中国.; 赵毅鑫, 中国矿业大学(北京)能源与矿业学院, 煤炭资源与安全开采国家重点实验室, 北京 100083, 中国.; 韩鹏华, 中国矿业大学(北京)能源与矿业学院, 煤炭资源与安全开采国家重点实验室, 北京 100083, 中国.; 陈见行, 中国矿业大学(北京)能源与矿业学院, 煤炭资源与安全开采国家重点实验室, 北京 100083, 中国.; 李全生, 国家能源集团有限责任公司, 煤炭开采水资源保护与利用国家重点实验室, 北京 100011, 中国.
推荐引用方式 GB/T 7714	何祥,张村,赵毅鑫,等. 基于覆岩损伤本构模型的高强度开采参数确定及减损效果评价[J],2021,38(3):439-448.
APA	何祥,张村,赵毅鑫,李全生,韩鹏华,&陈见行.(2021).基于覆岩损伤本构模型的高强度开采参数确定及减损效果评价.采矿与安全工程学报,38(3),439-448.
MLA	何祥,et al."基于覆岩损伤本构模型的高强度开采参数确定及减损效果评价".采矿与安全工程学报 38.3(2021):439-448.