Key technologies for preparation and multi scene utilization of multi-source solid waste based carbon fixation mining materials [PDF]
During the production of metallurgical industry and the development of coal resources, a large number of solid wastes that are difficult to be effectively utilized are produced, accompanied by surface subsidence, solid waste stockpiling and high carbon ...
Lang LIU +6 more
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Shuitu Baochi Xuebao, 2008 以黑龙江省鸡西煤矿区为研究区,利用鸡西本地河道清淤土和电厂粉煤灰两种固体废弃物作为改良剂进行矸石山基质改良研究。结果表明:改良后基质的pH值平均由对照的8.26下降到6.90;饱和含水率平均比对照提高了59.84%,持水时间比对照延长了11.5 d;速效氮含量达到316.05 mg/kg,比对照提高了4.38倍;速效磷含量达到24.224 mg/kg,比对照提高了43.53倍;对家榆、紫穗槐、紫花苜蓿的高生长、地径生长和冠幅增长等都有显著的促进作用 ...
王笑峰, 蔡体久
doaj
Risk Assessment and Influencing Factors Analysis of Heavy Metals in Soil of Non-Surface Coal Mines in Southern Hebei Province [PDF]
Non-surface coal mining is an important means to obtain coal resources. It is crucial to study the influencing factors and ecological risks of soil heavy metal contents of non-surface coal mines for the protection and management of mine area ecosystems ...
Anbing ZHANG +5 more
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Construction and application of green and low-carbon evaluation indicators for coal mining areas [PDF]
Coal mining areas serve as pivotal bases for coal production, holding significant importance for local economies and energy supply. In the development of China’s energy and environmental protection, the planning of mining areas plays a crucial role. With
Lei YU +8 more
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Study on the deterioration patterns of reinforced concrete under full immersion environment in subtropical ocean [PDF]
Aiming at the corrosion problem of steel bars in concrete in subtropical marine environment, the full immersion corrosion experiments of reinforced concrete specimens with different strength grades and rust inhibitor contents were carried out by ...
CHEN Wenlong +5 more
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Shuitu Baochi Xuebao, 2003 矿区水土流失是一种典型的人为加速侵蚀,存在着明显不同于原地貌的侵蚀特征:井工开采引起的地表塌陷,使地表变形、坡度加大、侵蚀加重,对地下水质也造成污染;露天开采排出的大量松散堆积物,由于地表严重压实和非均匀沉降,促使径流大量汇集,引起崩塌、滑坡、泥石流等地质灾害,同时增加了入河泥沙量,造成河道淤积、行洪困难.本文论述了采矿塌陷地、煤矸石山、排土场的水土流失特征,采矿对新增入河泥沙的影响,探讨了国内外矿区水土流失的防治所采用的工程措施和生物措施、动态监测水土流失的模型,以及今后尚需研究的内容.
吕春娟, 白中科, 赵景逵
doaj
Research on the strength prediction model of Na based bentonite filling body based on ultrasonic transverse wave testing [PDF]
As the core unit of backfill mining method, the strength of backfill is an important indicator to ensure safe mining. Na-based bentonite features a high methylene blue adsorption capacity and green compressive strength, making it a high-quality additive ...
CHENG Jinshan +3 more
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Preparation of Magnetic Coal-measure Kaolinite Nanomaterials and Adsorption of Cr(Ⅵ) [PDF]
This is an article in the field of mineral materials. In order to develop the high-value utilization technology of coal associated mineral resources kaolinite, coal-measure kaolinite nanomaterials(CKN) were prepared by indirect intercalation-liquid phase
Ruifeng GUO +4 more
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Innovation and practice of quadrilateral development model for coal resources [PDF]
China’s coal mining technology has undergone many innovations, with continuous improvements in the intensification and modernization levels of coal production.
Feng JU +4 more
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Preparation of SiC/Al2O3 composite materials from coal fly ash [PDF]
, 2016 By using coal fly ash as a raw material and graphite as a reducer in the protective atmosphere of argon,SiC/Al2O3 composite materials were synthesized by carbothermal reduction.The reaction process of reduction of the coal fly ash was studied,and its ...
LI Wei +5 more
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