Results 61 to 70 of about 532 (165)
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, 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
doaj
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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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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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
doaj
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
菌剂配施有机肥下植物-土壤-微生物生态化学计量特征及内稳性——以内蒙矿区排土场中药复垦模式为例
Shuitu Baochi Xuebao, 2023 生态化学计量学是研究生态系统与多重化学元素平衡的有效方法,明确不同施肥制度对植物-土壤-微生物连续体碳、氮、磷含量及其生态化学计量比的影响,可为揭示生态系统养分循环、实现矿山复垦农业系统元素平衡及可持续发展提供参考依据。以武家塔露天煤矿排土场复垦地为研究对象,设置微生物菌剂配施不同有机肥(A1B0、A2B0、A3B0、A1B1、A2B1、A3B1) 6个施肥处理,结合苦参的种植,研究其植物-土壤-微生物碳氮磷特征及内稳性。结果表明:(1)与单施有机肥相比,有机肥配施微生物菌剂对茎叶磷 ...
郑笑影 +7 more
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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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