期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于GNSS监测数据的巨厚松散层下采煤对地面振动影响及沉陷过程研究
1
作者 郑增荣 刘斌 +3 位作者 肖星星 王军 刘生强 赵宏飞 《中国矿业》 北大核心 2024年第S02期318-324,共7页
针对煤炭地下采掘对地面振动的影响过程,本文以皖北某大型矿井为例,通过连续采集全球导航卫星系统(GNSS)监测数据,探究了巨厚松散层下煤矿开采对地面振动和沉陷的影响,使用FLAC^(3D)数值模拟软件对地层数据进行建模,模拟地下采煤机械运... 针对煤炭地下采掘对地面振动的影响过程,本文以皖北某大型矿井为例,通过连续采集全球导航卫星系统(GNSS)监测数据,探究了巨厚松散层下煤矿开采对地面振动和沉陷的影响,使用FLAC^(3D)数值模拟软件对地层数据进行建模,模拟地下采煤机械运行时的振动传播过程。结果显示,随着振动波从煤层巷道顶部沿松散层向上传播,振动能量逐渐衰减,尤其在厚层黏土层中衰减最为明显。随后,利用变分模态分解(VMD)和频谱分析,对地面振动数据进行处理和分析,发现地下机械开采振动经松散层后的频率特征,以及振动通过松散层传递后的衰减规律。同时,对监测站的沉陷数据进行分析,发现沉陷过程呈现先升后降的变化趋势,活跃期的沉陷量占总量的91%。分析了影响因素及振动影响的持续时间。本文研究结果为采煤活动安全管理和环境保护提供了科学依据。 展开更多
关键词 GNSS监测数据 巨厚松散层 采煤地面振动 影响持续性
在线阅读 下载PDF
Ecosystem health: ecological sustainability target of strategic environment assessment 被引量:1
2
作者 陈昆玉 《Journal of Forestry Research》 SCIE CAS CSCD 2003年第2期146-150,共5页
Strategic environment assessment (SEA) and ecosystem health are two new ideas on environmental management. On the basis of reviewing some relevant literature, this paper made discussions on the ecological sustainabili... Strategic environment assessment (SEA) and ecosystem health are two new ideas on environmental management. On the basis of reviewing some relevant literature, this paper made discussions on the ecological sustainability target of SEA, the content of ecosystem health as well as the interrelations between SEA and ecosystem health. For a good SEA, its ecological sustainability principles should be provided with distinct content and a general assessment system. A framework for ecosystem health assessment was established according to the content of ecosystem health, and combined into SEA as SEA抯 ecological sustainability target, we can effectively guide decision-makers to make suitable indigenous means and local solutions. , The basic principles and procedure of SEA for ecosystem health are also discussed in the paper. 展开更多
关键词 Environment impact assessment Strategic environmental assessment Ecosystem health
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部