1) coal-hearing formation
含煤岩层
2) sandstone layer in the uranium-coal bearing series
含铀煤系中的砂岩 层
3) coal-bearing formation
含煤岩系
1.
Study on the Sporopollen Assemblages and their Geological Era in the Coal-bearing Formation of the Late Palaeozoic Era in Tangyang Mine Field of Jining;
济宁唐阳井田晚古生代含煤岩系孢粉组合及其地质时代
2.
Upper Permian coal-bearing formation in Xinhua coal-mine is a set of coal-bearing formation of marine carbonate rock and clastic rock in Liuzhi,Guizhou.
贵州六枝特区新华煤矿上二叠统含煤岩系属于一套海陆交互相含煤建造。
3.
Based on the rock type of coal-bearing formation ，the key factors to control rock mechanics properties ，such as lithological characters ，in-situ stresses, and moisture, are systematically analyzed.
基于含煤岩系主要岩石类型,系统分析了决定岩石力学性质的主要控制因素如岩性、地应力和水,探讨了不同岩性岩石在不同侧压和不同含水条件下的力学特征,分别建立了含煤岩系岩石力学性质与岩性、地应力和水等主要控制因素之间的定量关系。
4) coal bearing petrofabric
含煤岩组
5) coal-bearing rock series
含煤岩系
1.
The coal-bearing rock series-Yanan Formation,250～350m in thickness,contains more than 20 coal seams.
本文对灵武煤田含煤岩系延安组煤岩显微组分的甾萜类化合物作了对比研究。
2.
The stratigraphic age of Dunri coal-bearing rock series was formerly belongedto Late-Triassic Epoch, but its many features such as lithology, lithofaces,coal quality andsporopollen assemblage etc.
墩日含煤岩系时代原定为晚三叠世。
3.
The coal-bearing rock series rock mass structure is the basic factor to control coal and rock deformation,based on this presupposition,guided under fundamental theories of rock mechanics and fractal geometry,put forward two parameters of rock mass strength factor conditional on rock Young s modulus and Poisson s ratio and fractal dimension conditional on strata thickness.
含煤岩系变形规律的研究,对煤炭资源评价和开采、煤矿瓦斯灾害预测、煤层气的可开发性评价具有指导意义。
6) coal-bearing strata
含煤岩系
1.
Coal-bearing strata have been divided into three sections by interpreting large amounts of drill information and by evaluating the properties of the coal-bearing strata.
以大量钻孔资料为基础,通过分析研究,对含煤岩系的含煤性作出评价,划分了3大含煤段,利用有效的对比方法和依据,对可采煤层进行全区对比分析,最后对全区煤层进行统一编号,为该区开矿及外围勘探提供宝贵的资料。
2.
The paper introduces how to use composed patterns of logging curve to research into the vertical changing characteristics of coal strata,which has provided the basis for the sequence division of coal-bearing strata.
介绍了利用测井曲线的组合形态研究煤系地层各体系域在垂向上的变化特征,为含煤岩系层序的划分提供依据。
3.
Integrated some literatures both home and abroad,we have discussed abundance,hosting state,geologic genesis and possibility of utilization of useful metals such as niobium,gallium,rhenium and scandium in coal and coal-bearing strata.
综合国内外一些研究资料,论述了煤和含煤岩系中有益金属铌、镓、铼、钪的丰度、赋存状态、地质成因以及利用的可能性。
补充资料：铀系法
| 铀系法 uranium series method 利用天然放射性系列（主要是铀系）中某些中间子体的放射性衰减或积累进行地质计时的方法。又称铀系不平衡法。铀的衰减系列包含多种元素的放射性同位素。它们在地质过程中铀的衰变链被断开，使母体与子体的平衡状态被破坏，子体之间被分开，出现子体同位素的过剩或不足。铀系法正是以母体与其子体处于不平衡和子体的过剩或不足为前提，来测定年轻地质样品的年龄。铀系法包括过剩子体衰减法和不足子体累积法两大类。过剩子体衰减法包括：不平衡铀法（234U-238U），测定碳酸盐和水体的 地质年龄 ；-钍法（230Th-232Th)或-镤法(230Th-231Pa)，测定海泥和锰结核的沉积速率；铅-210法，测定冰川、积雪、湖泊、港湾等沉积物年龄；不平衡钍法(228Th-232Th)和钍-234法，适用于浅水沉积物年龄的测定 。不足子体累积法包括 ：-铀法(230Th-234U)、镤-铀法(231Pa-235U)、-镤法(230Th- 231Pa)和镭-铀法（226Ra-238U)。它们均可测定海相和陆相碳酸盐、磷块岩、洞穴堆积、骨化石、牙齿等的地质年龄。而且对考古学方面的鉴定也具有重要意义。铀系法测定的时间范围可由几年到100万年。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条