Results 41 to 50 of about 156 (90)

Review of 70 years’ achievements and high-quality development architecture system of surface coal mining in China [PDF]

open access: yes
As an important component of China’s coal industry, surface coal mines have the advantages of large production capacity, low mining costs, and great safety conditions.
Qingxiang CAI, Yanlong CHEN
core   +1 more source

神府东胜煤田复垦区土壤入渗特性的试验研究

open access: yesShuitu Baochi Xuebao, 2008
土壤入渗性能是最基本的土壤物理特性之一。复垦区土壤的结构组成复杂,入渗特性有别于非矿区土壤。本文以神府东胜煤田马家塔复垦区为研究对象,利用圆盘入渗仪分别测定了复垦区乔木、林地、荒地、灌木林地和草地的土壤入渗特性,用经典统计学方法对复垦区土壤入渗性能的空间变异性进行了分析。实测结果表明,不同土地利用方式下的土壤入渗特性有较大的差异;在测定范围内,乔木林地、荒地、草地和灌木林地的稳定入渗率均表现出0 cm>—3 cm>—15 cm的规律性,其中草地稳定入渗率随吸力的变化更明显。研究表明 ...
付微, 邵明安, 黄明斌
doaj  

Connotation, research status, and development directions of clean coal geology in China [PDF]

open access: yes
[Objective] The exploration and assessment of low-carbon, zero-emission, and maximized utilization of coal resources, emerge as a focus of coal geology in the 21st century.
Harold H. Schobert   +6 more
core   +1 more source

不同培肥措施对采煤塌陷区复垦土壤氮素矿化的影响

open access: yesShuitu Baochi Xuebao, 2018
为揭示不同培肥措施对采煤塌陷区复垦土壤氮素矿化特征,采用间歇淋洗好气培养法,研究了不施肥(CK)、单施化肥(CF)、单施有机肥(M)、化肥配施有机肥(MCF)和化肥配施生物有机肥(MCFB)5种培肥措施对复垦4年和8年土壤矿质态氮和可溶性有机氮变化及氮素矿化特征的影响。结果表明:间歇淋洗好气培养过程中,复垦8年土壤累积NO3-—N产生量较4年增加2.63%~26.83%,NH4+—N累积产生量增加12.50%~32.14%,可溶性有机氮(SON)累积产生量在CF和M处理下减少31.59%~62.50 ...
李彦   +5 more
doaj  

Advances in research on technologies for large-scale coal gangue utilization for green mine construction [PDF]

open access: yes
BackgroundThe coal gangue, a solid waste, features high production and a continuous increase in the amount piled in China. The long-term piling up of coal gangue will cause the waste of land resources and environmental pollution in mining areas.
Dawei XIE   +4 more
core   +1 more source

Internal deformation characteristics and full section monitoring for extremely thick loose layers under mining conditions [PDF]

open access: yes
Mining subsidence represents the primary environmental geological challenge in coal mining, particularly at high water level mining areas in the eastern regions of China.
Pingsong ZHANG   +3 more
core   +1 more source

New way for green and low-carbon development of coal industry under the target of “daul-carbon” [PDF]

open access: yes
Under the background of “dual-carbon” goal and current technological conditions, coal, waste and carbon constitute an impossible triangle in the coal industry which severely constrains its green, low-carbon, and sustainable development.
Jianyou WANG   +10 more
core   +1 more source

生物炭与有机肥、无机肥配施对采煤塌陷区复垦土壤理化性状的影响

open access: yesShuitu Baochi Xuebao, 2017
为了研究施用生物炭对采煤塌陷复垦土壤的熟化效果,以山西省晋城市采煤塌陷复垦区土壤为研究对象,连续3年采用生物炭与有机肥、无机肥配施等方式研究其对复垦土壤主要理化性状的影响。结果表明:不同施肥处理均不同程度改善了土壤的理化性状,有机肥配施生物炭处理明显降低了复垦土壤容重(降幅10%),提高了土壤孔隙含水率(增幅7.14%),但对土壤pH影响不明显。有机肥处理和无机肥处理的土壤全氮、全磷含量差异不显著;无机肥配施生物炭处理与单施无机肥处理相比,速效磷增加了8.33%,速效钾增加了6.34%,增幅较明显 ...
梁利宝, 冯鹏艳
doaj  

Research and practice of intelligent-green mining in the billion-ton mine cluster of Shendong Mining Area [PDF]

open access: yes
In order to achieve safe, intelligent, efficient and green mining in the billion-ton mine cluster, Shendong relies on technological and management innovations, develops a new intensive production model, forms the world's first billion-ton mine cluster ...
Chuanjiu ZHANG   +9 more
core   +1 more source

Home - About - Disclaimer - Privacy