Analysis of the impact of coal mining on the ecological environment of the nature reserve

With the gradual attention of the state to the protection of natural ecological environment, the planning and layout of the nature reserve will overlap with some coal mine areas. In order to strengthen the construction of ecological civilization, it is necessary to study the impact of mining on the ecological environment of the nature reserve. Through the methods of GIS and RS, and evaluation o f ecological protection index system, the differences and impacts of ecological environment changes before and after the planning of the nature reserve are analyzed. The results show that since 2002, the effect of water collection and artificial soil and water conservation measures on improving the ecological environment of vegetation are obvious, the dominant species of vegetation type in the overlapping area of coal mine and nature reserve have changed from grass vegetation to shrub vegetation, inwhich the area of arbor forest land has increased significantly, the veetationcoverage in the overlapping area has also increased considerably . The intensity of soil erosion has decreased year by year after mining the coal resources. Postharvest hydraulic erosion intensity is mainly below mild, and the area of artificial soil and water conservation has increased significantly. T he negative impact of the ground subsidence caused by coal mining on the ecological environment is less than the positive effect brought by artificial soil and waterconservation measures, and it is generally developing in a more stable direction. The ecological protection status index increased fr om 32. 98 to 45.94, and the change degree of ecological protection status in nature reserves is 12.9 ≥10. T he ecological protection status of the nature reserve improved significantly. On the basis of ecological environment protection and restoration measures in the nature reserve, coal mines need to further study the comprehensive impact of human activitieson the ecological environment of the nature reserve.     

山地风电场工程水土保持方案初探

文章介绍了山地风电场具有生态系统脆弱、地形复杂、对外交通条件差、毗邻旅游风景区等特点,风电场开发建设过程中将会对原有地表造成破坏,导致植被退化、水土流失加剧。针对山地风电工程水土保持措施进行探讨,以期为类似项目的水土保持提供借鉴。     

道家哲学深层生态意蕴的探析

从“道法自然”本体论的深层生态含蕴、“人与天一”自然观的深层生态底蕴、“物无贵贱”、“我亦物也”价值观的深层生态内涵,以及“少私寡欲”、“见素抱朴”实践观等几个方面剖析了道家哲学的深层生态意蕴,为完善和发展现代生态哲学理论提供了一个新的视角。     

大学生体质健康评价模型及不同评分标准的相通性

为更准确、客观的测定每个大学生体质健康等级,利用分段拟合方法分别构建大学男、女生体质健康评价模型,并得到体质测试分及各项测试项目基本得分间的具体表达式．后又具体论析了模型求解过程中,所涉及四个测试项目均占0．25的权重值与《国家体质健康标准》中公布的权重值之间是相通的．     

Limiting drainage criterion for groundwater of mountain tunnel

Large amount of groundwater discharging from tunnel is likely to cause destruction of the ecological environment in the vicinity of the tunnel, thus an appropriate drainage criterion should be established to balance the tunnel construction and groundwater.To assess the related problems, an limiting drainage standard ranging from 0.5 to 2.0 m3/（m·d） was suggested for mountain tunnels based on survey and comparative analysis. After that, for the purpose of verifying the rationality of the standard, a calculated formula for dewatering funnel volume caused by drainage was deduced on the basis of the groundwater dynamics and experience method.Furthermore, the equation about the relationship between water discharge and drawdown of groundwater table was presented. The permeability coefficient, specific yield and groundwater table value were introduced, and then combined with the above equation, the drawdown of groundwater table under the proposed limiting drainage criterion was calculated. It is shown that the proposed drainage standard can reach the purpose of protecting ecological environment under the following two conditions. One is the permeability coefficient ranges from 10-4 to 10-5 m/s and the specific yield ranges from 0.1 to 0.001. The other is the permeability coefficient varies from 10-6 to 10-8 m/s and the specific yield varies from 0.1 to 0.01. In addition, a majority of common geotechnical layers are involved in the above ranges. Thus, the proposed limiting drainage standard which ranges from 0.5 to 2.0 m3/（m·d） for mountain tunnel is reasonable.     

社会主义核心价值观引领大众文化建设探析——马克思主义人学视角

科学构建社会主义核心价值引领大众文化建设方案,应准确把握社会主义核心价值观的科学内涵与精神实质;夯实社会主义核心价值观引领大众文化建设的马克思主义人学基础,科学把握三者的互动品质;从马克思主义人学视角重视社会主义核心价值观引领大众文化建设的功能和价值,促进人的本质的自由全面发展。     

贵州省白马山水库混凝土砌石拱坝优化设计

贵州省白马山水库大坝是一座混凝土砌毛石重力单曲拱坝,最大坝高48 m,采用ADAO拱坝分析与优化软件,对坝体结构、应力变形、坝肩稳定性等进行了分析。调整了设计方案,使坝体设计方案满足SL25-2006和SL282-2003等技术规范要求。     

基本地貌形态数学模型的改进

以邻域、边界等拓扑学概念为基础,引入环状邻域和分离型邻域等概念,根据任意点对地貌特征点的高差所满足的不同条件,分别推导了山、洼地、鞍部、盆地、高原、岛屿等基本地貌形态的数学模型.     

“美丽中国”背景下的生态道德建设--以湖北武陵山区生态文明建设为例

党的十八大报告提出建设美丽中国,实现中华民族永续发展的宏伟目标。建设“美丽中国”是当代中国生态文明建设的目标,而建设生态文明不仅要靠物质方面的进步,也需要精神道德意识层面的提升。生态文明建设蕴含着复杂多样的道德问题。因此,公民生态道德建设对实现“美丽中国”目标具有十分重要的意义。本文以湖北武陵山区生态文明建设为例,分析生态道德建设的历史必然性和现状,从生态道德视角探索推进湖北武陵山区生态文明建设的路径。     

考虑动态备用需求曲线的电能量-备用耦合出清模型

电力市场中,价格帽等原因会导致缺失收入(missing money)和发电容量充裕度不足等问题。以美国得克萨斯州为代表的备用需求曲线是国外电力市场解决此问题的成熟方法之一,但得克萨斯州的曲线是相对静态的曲线,且备用价格增量推导原理未明确公开。为此,文中通过考虑可再生能源、负荷预测的不确定性,以及不同品种的备用产品,制定动态备用需求曲线。基于电能量-备用耦合现货出清模型,推导了考虑备用需求曲线的现货价格公式,并分析了国外现有机制忽略的备用价格增量高阶项问题,并通过中国华东某省数据进行验证。结果表明,备用需求曲线可以体现稀缺定价,通过备用价格增量动态反映可再生能源、负荷等波动下的系统实时容量充裕度情况。通过稀缺定价机制可以合理提高电厂收入,有利于保障系统充裕度。