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- They can be divided into low sulphidation and high sulphidation types,with typical wall rock altera tion and alteration zonation of epit hermal de-posit. 这些矿床可分为高硫化型和低硫化型,且都具有典型的围岩蚀变、蚀变分带等矿床特征。
- The high expansion foam fire system (HEFF) is very effective to fire distinguishing due to the high output and speedily spreading of foam with advantages of low water consumption. 高倍数泡沫灭火系统具有用水量少、发泡量大、淹没速度快、灭火能力强的特点。
- The flame retarding methods and flame retardant of high expansion PE were studied according to burning phenomenon of polymer and flame retarding mechanism. 根据聚合物燃烧现象和一般阻燃机理寻求研究高发泡聚乙烯的阻燃方法和阻燃剂。
- Wall rock is a special medium of underground engineering and its stability affects directly production and safety. 摘要围岩是地下工程类特殊的介质,其稳定性直接影响到生产和安全。
- The paper carefully analyzes bolt supporting system, and measures the parameters of coal wall rock in Fuxin diggings. 本文对锚杆支护理论进行了系统分析,并对阜新矿区煤巷围岩的参数进行了实验测定。
- Secondly, simulation elicits wall rock transmogrification under the different coal pillar and different stress. 其次模拟研究分析了留设煤柱宽度不同时以及地应力大小不一时沿空巷道围岩变形情况,得到了一些认识;
- Abstract : The high expansion foam fire system (HEFF) is very effective to fire distinguishing due to the high output and speedily spreading of foam with advantages of low water consumption. 随着我国经济的迅速发展,各种潜在火灾危险的工商业和民用建筑日益增多,消防新技术、新设备的需求也越来越大。
- The results show that both ore body and wall rock have weak or strong rockburst proneness. 结果表明,该矿矿体和围岩均具有发生弱或强烈岩爆的倾向性。
- The relationships among properties, cold rolling process and stabilizing treatment had been investigated for the laterally welded bimetal strips of high expansion component alloy 304. 对彩管用横拼双金属材料中的高膨胀组元合金304钢带的性能与冷轧工艺、稳定化处理工艺之间的关系作了系统研究。
- The main wall rock alterations of the Kangshan goldfield are silication,sericitization,carbonicacidation and pyritization. 康山金矿田围岩蚀变主要为硅化、绢云母化、碳酸盐化及黄铁矿化。
- In flat dip layer, the seam thickness control the stability of the wall rock, the thick-bedded hard rock is stable than the thin-bedded hard rock. 岩层厚度在缓倾斜时对围岩稳定起控制作用,厚层硬岩整体稳定性好于薄层状硬岩。
- The alteration distribution from ore body to wall rock is skarn-high silicification-low silicification-quartzification and carbonatization. 矿体至围岩明显有矽卡岩化-强硅化-弱硅化-石英、碳酸盐化的蚀变分带特征。
- The wall rock alteration characteristics and the relationship between wallrock alteration and the alteration model are set up in the paper. 对花山花岗岩体中金矿的围岩蚀变特征和围岩蚀变与金矿化的关系进行了研究,并建立了蚀变模式。
- High Expansion Foam Riot Control System 高膨胀泡沫骚乱控制系统
- The lead-zinc ores can be classified into the hydrothermal vein type and the skarn type with strong wall rock alteration. 纳木错-嘉黎断裂带是以铜、铅、锌为主的多金属成矿带,矽卡岩型矿床是该区带典型矿床类型之一。
- The medieval town was fortified with a high wall and a deep moat. 这座中世纪的城市周围建有城墙和护城河。
- On the roof of coal bed are consists of the mudstones in dark-gray or grizzle which will expand met water and wet air, with higher expansion stress and coefficient. 煤层顶板为深灰色和灰色泥岩,该岩石遇水和潮湿空气产生膨胀,膨胀应力和膨胀率大。
- The oecurrence of tourmalinite is the same as that of wall rock,but the obvious feature of the tourmalinite is microlaminated structure. 主要成分为微粒镁电气石,其次有石英、长石,少量粘土矿物、毒砂和黄铁矿。
- high expansion foam fire extinguishing system 高倍数泡沫系统
- The mag matic water is a component of ore forming hydrothermal water.And the gold mater ial sources stem from the wall rock and the granite. 认为在热液蚀变作用过程中,稀土元素保持惰性,成矿热液与岩浆热液有关,赋矿围岩及矿区花岗岩提供了成矿物质。