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- Coal Bed Thickness Prospecting With Common Reflecting and Shifting Method 地震波反射共偏移法在探测煤层厚度中的应用
- the coal bed thickness accretes at first and then decreases until steady. 煤层总厚度先增大后减小至稳定。
- coal bed thickness 煤层厚度
- Exaggerated sections distort the shapes of folds as well as bed thickness. 比例放大的剖面歪曲褶皱的形态和岩层厚度。
- It is a new way of the utilization of coal bed gas. 为井下抽放煤层气的利用提出了一条新的途径。
- The infection of deep part mining to draining of superficid part water bearing ground,thickness of coal bed and obliquity to mining are analyzed. 分析了覆盖破坏的覆岩岩性及结构对地表移动和覆岩破坏的影响,深部开采对浅部含水层疏干、煤层厚度及倾角对开采条件的影响;
- Besides such objective conditions as the thickness of coal bed, faint awareness of treasuring resources,lack of supervision,and deficiency in management r... 分析原因,除客观条件(如煤层厚度)等因素外,生产单位珍惜资源的意识淡漠,监管缺位和管理制度缺陷都在很大程度上影响了回采率的提高。
- The cuttings bed thickness in safe drilling is preferably 1.9 cm as is calculated with the models. 由计算结果推出了安全钻进时岩屑床的厚度极值为1.;9cm
- One dimensional overpotential distribution equation along the direction of the bed thickness is formulated. 建立了固定床内超电位沿床层厚度方向的一维分布方程。
- Guided by seismic data, we use logging data to invert lithological parameters and bed thickness exactly by s... 由于迭代过程只需修改波阻抗一个参数即可反演出两个参数，提高了反演速度。
- Coal Bed Methane Drilling and Completion Technology in Western Basin of U.S. 美国西部盆地煤层气钻井和完井技术。
- Preliminary research on structural law of coal bed beneath nappe in No. 对新集二矿推覆体下煤层构造规律进行了初步研究。
- Graphite deposit of Heye was formed by metamorphism of the Permian coal bed. 荷叶石墨矿是由二叠系煤层变质而成的石墨矿床,石墨与煤呈同层异矿关系。
- In this paper, a simple and effective method is used to invert lithological parameters and bed thickness on the basis of seismic lithology modelling (SLIM). 即从测井数据出发，在地震资料的控制下，通过逐次迭代，精确地反演岩性及厚层参数，有效地解决了反演的多解性问题。
- Several coal beds are developed in backswamp deposits. 河漫沼泽上发育多套煤层。
- For measuring exactly on gas content of coal bed,required high core recov ery and short time to hoisting and loa ding. 为了准确测定煤层含气量,要求取心作业必须有高的收获率和尽可能短的提钻及出筒装罐时间。
- The results of experiments shows: with moving bed thickness and moving speed of granular desulphurization reagents increasing, velocity of empty bed and SO_2 concentration decreasing, desulphurization efficiency will increase. 实验结果表明:随着床层厚度增加、空床气速降低、入口SO_2浓度减小、平均下料速度增加,脱硫效率将提高。
- On the premise that before secondary change the bed thickness changes gradually and the rock volume is constant,the au- thor uses translational iteration to eiiminate the secondary change of bed thickness. 本文在未发生次生变化前地层厚度是渐变的和地层在次生变化前后其岩体体积不变的前提下,提出了用平移迭代法消去地层次生变化的方法。
- The existing mine gas in coal bed occurs mostly in the free state,the adsorption state and the dissolved state. 瓦斯气体在煤储层中的赋存状态主要有游离态、吸附态和溶解态。
- The hydro-geological parameters of Triassic age coal bed 3 of Dongtan Coal Mine be calculated with it. 利用相关方程求出了全东滩矿3煤砂岩顶板含水层的水文地质参数。
