Results 61 to 70 of about 516 (164)
Study on site selection and economic evaluation of mine YJL [PDF]
, 2017 目前，全球矿产品价格低靡，矿山企业生存难度急剧增加，要想在市场得以生存，矿山企业必须提升自身市场竞争力。矿山采选厂址的地理位置，是矿山总图合理及规范化布局及各技术方案的基础。选址的技术性及经济性，直接影响矿山企业的生产能力、运营成本、管理难度及经济效益。因此采用科学先进的设计方案、制定清晰的环保措施、以及较为准确的评估项目的经济性，是使矿山企业提高竞争力的重要手段。 本文首先根据矿区水文地质条件及地形地貌、矿体上下盘位置、地表监测带和尾矿库位置等影响因素，圈定并粗选出三个备选采选厂址 ...
张振中
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Shuitu Baochi Xuebao, 2021 为探究引起三峡库区农业小流域土壤侵蚀的主要次降雨因子，通过天然降雨观测资料，分析忠县石盘丘小流域2019年侵蚀性降雨年内分布特征和典型次降雨条件下A和B 2个集水区产沙过程的变化规律，采用相关性分析方法，揭示次降雨产沙的主要影响因素。结果表明：（1）全年119场降雨资料中，有19场为侵蚀性降雨。全年侵蚀性中雨共发生10次，是侵蚀性降雨中最常见的降雨类型。暴雨及以上降雨是造成研究区产沙量最大的降雨类型。（2）在典型中雨、大雨和暴雨产沙事件中，B集水区产沙量分别是A集水区的5.13，1.66，7.56倍 ...
崔璨 +5 more
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A review of underground coal fire detection technology and engineering application [PDF]
Underground coal fires have a serious impact on coal resources and the environment, and the accurate detection of the location of fire areas is the premise and key to carrying out coal fire control. Based on the formation process of coal fire, this paper
CAO Shilong +3 more
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Regulatory detection of edge engineering structures in unloading zones based on parallel perception [PDF]
The primary challenge encountered by unmanned technology during the unloading phase in open-pit mines is safety hazards, particularly concerning the stability and normative detection of engineering structures at the edges of unloading area.
Jianjian YANG +5 more
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Shuitu Baochi Xuebao, 2023 为揭示工程堆积体平台汇流造成的水沙及氮磷养分流失特征,以矿区堆土场为研究对象,采用室内放水冲刷试验,研究不同上方来水流量(1.7,2.3,2.9 L/min)和坡度(25°,30°,35°)下地表径流、壤中流及侵蚀泥沙产生过程,分别测定氮磷养分浓度并计算流失量及贡献占比。结果表明:蒙东地区覆土排土场边坡产流方式主要为地表径流,随坡度和冲刷流量的增大,地表径流量增大,壤中流量减小。产沙量随坡度的增大先增大后减小,侵蚀产沙的临界坡度在30°附近。地表径流中铵态氮及磷酸盐流失浓度均大于壤中流 ...
樊桐桐 +4 more
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Review of 70 years’ achievements and high-quality development architecture system of surface coal mining in China [PDF]
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
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Precise intelligent recognition method and application of coal-power-chemical industry sites characteristics in Yellow River Basin [PDF]
The Yellow River Basin is an energy basin that has the dual responsibility of ecological environment governance and economic and social development. The precise and intelligent recognition of the categories, numbers and characteristics of coal-related ...
Feng LIU +6 more
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Shuitu Baochi Xuebao, 2004 针对紫金山矿区动态开采引起弃渣量、堆渣场等情况不断变化,给水土流失防治带来新困难和存在安全隐患问题,在深入调查矿区水土流失现状、特点、趋势基础上,分析了现有水土保持措施的安全有效性,提出了该矿的开采区、排土(石)场、堆浸场、道路等重点部位水土保持措施补充整合具体方案及有关建议,为该矿完善水土保持措施提供科学依据。
陈善沐
doaj
Collaborative mining technological system of safety-green-high efficiency-low carbon for open pit coal mine [PDF]
The safe, green, efficient and low-carbon coal mining is the common goal of surface coal mines around the world. The development intensity and ecological carrying capacity of surface coal mine resources in China show the reverse development ...
Ensan FU +4 more
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