New Progress in High-Precision and High-Resolution Seismic Exploration Technique in Coal Industry of

来源 :Acta Geologica Sinica(English Edition) | 被引量 : 0次 | 上传用户:gen19gu86
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In the past twenty years, the proportion of coal in primary-energy consumption in China is generally between 71.3% and 76.5%. The output of coal was 1.374 billion tons in 19%, and 1.21 tons in 1998, which ranked first in the world. Now coal is mined mainly with mechanization in China, which is planned to reach 80% in major State-owned coal mines in 2000 according to the planning of the government (Li et al., 1998; Tang Dejin, 1998).Compared with the USA and Australia, China has more complex coal geological structures. Based on high-resolution seismic technique in coal exploration, a new seismic technique with high-precision and high-resolution (2-D and 3-D) has been developed for the purpose of detecting small geological structures in coal mine construction and production to meet the needs of large-scale popularization of mechanized coal mining in China. The technique is low in cost and requires a relatively short period of exploration, with high precision and wide-range applications. In the middle of t In the past twenty years, the proportion of coal in primary-energy consumption in China is generally between 71.3% and 76.5%. The output of coal was 1.374 billion tons in 19%, and 1.21 tons in 1998, which ranked first in the world Now coal is mined mainly with mechanization in China, which is planned to reach 80% in major State-owned coal mines in 2000 according to the planning of the government (Li et al., 1998; Tang Dejin, 1998) .Compared with the USA and Australia, China has more complex coal geological structures. Based on high-resolution seismic technique in coal exploration, a new seismic technique with high-precision and high-resolution (2-D and 3-D) has been developed for the purpose of detecting small geological structures in coal mine construction and production to meet the needs of large-scale popularization of mechanized coal mining in China. The technique is low in cost and requires a relatively short period of exploration, with high precision and wide-range applications. In the middle of t
其他文献
抑癌基因失活是肿瘤得以逃避正常生长控制的途径之一。人类染色体 1 0 q2 3上一段 DNA的变异在很多常见的肿瘤中可以见到 ,尤其多见于恶性胶质瘤、进展期前列腺癌和子宫内膜
费云帆,在琼瑶的小说中可谓不可多得的在商场叱咤风云的男神,作为常胜将军,在情场的系列悲催遭遇几乎要盖过他商界男神这一男主光环。而由方中信饰演的费云帆的港味儿,恰恰暗
【摘要】当我们着眼于人与动物的根本区别而分析了人与生存空间互动的中介系统之后,当我们着眼于人与其生存空间互动的中介系统而分析了词汇的基本特性和主要功能并且由此出发初步构建起关于词汇的理论范畴之后,我们就应該而且可能在汉语词汇研宽现有的思路与成果的基础上,扩大新的理论视野,开拓新的考察视角。  【关键词】基于 “互动中介” 词汇 研究思路  坚定地立足于汉民族与其生存空间的历史性互动,着重运用认知学
在编制三峡水利枢纽初步设计要点报告阶段,为了选择坝区坝段,进行了大量的勘测设计研究工作。通过大量的地质勘探工作,已经可以得出结论,在地质条件方面,三斗坪坝区远胜于南
谈到长江水利建设,最引人注意的是三峡水利枢纽。这是很自然的。三峡水利枢纽不但技术经济指标特别优越,综合效益极其巨大,而且在长江流域水利和土地资源的综合利用开发中具
目的 探讨表皮生长因子受体(EGFR)表达、滋养细胞增生与葡萄胎恶变的关系。方法 检测石蜡包埋的135例葡萄胎和13例正常早孕绒毛标本,常规组织切片病理观察滋养细胞增生程度,免
半年以来,黄河三門峡工程局全体职工在經过整風、双反运动提高思想觉悟的基础上,本着党中央毛主席所指示的:鼓足干勁、力争上游、多快好省地建設社会主义总路綫的精神,以忘
在柴达木盆地北缘东段,首次从古元古代达肯大坂岩群中发现太古宙麻粒岩,并取得3450Ma Sm-Nd等时线同位素年龄。该麻粒岩以包体产出于元古代变质侵入体中,原岩为拉斑玄武质岩
山坡梯田化是山区耕作最古老的方法之一,然而在最近以前山坡梯田化经常利用人工进行,梯田施工最近才开始使用机器。1954年到1958年在克里米亚利用机械切成梯田中取得了良好
同步辐射白光形貌术观察LiTaO_3晶体中的小角晶界@魏景谦$山东大学晶体材料国家重点实验室!济南250100@胡小波$山东大学晶体材料国家重点实验室!济南250100@王继扬$山东大学