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- gas drainage in fractured zone 裂隙带抽放
- The reasonable layer selection is the main influencing factors for gas drainage by high level borehole,the borehole parameters is based on the caving & fracture zone height of gob. 高位钻孔抽放最主要的影响因素是合理层位选择,其钻孔参数应根据采空区冒落带及裂隙带高度来设计。
- In order to obtain a good result of gas drainage in gob roof, the control methods of gas from goaf are discussed. 摘要为了在采空区顶板实施瓦斯抽放技术获得较高的瓦斯抽放效果，对采空区瓦斯治理方法进行了探讨。
- Gas drainage in high gassy coal seam with low gas permeability is always an hard solved significant technology problem in the process of safety production. 高瓦斯低透性煤层的瓦斯抽放,一直是煤矿安全生产过程中的重大技术难题。
- The application of the gas drainage technology in Donghai coal mine is introduced, including gas drainage in close coal layer, gas drainage in goaf, gas drainage from coal, and local gas drainage. 介绍瓦斯抽放在东海矿的应用,抽放方式为邻近层抽放、空区抽放、本煤层抽放及局部抽放。
- gas drainage in low gas mines drainage 瓦斯抽放
- The delaminating phenomenon is observed in fracture zone of three samples, the delaminating phenomenon of fracture of 16MnR steel is obscure, while that of Q235B steel is obvious. 3.;对试样断口形貌研究发现：三种材料的裂纹扩展区均出现分层现象，其中尤以Q235B为明显;16MnR 最不明显；
- Dynamics of fluids in fractured media II. 裂隙介质水动力学2。
- Practice on Covering up Tube for Gas Drainage in 16031 Working Face 16031回采工作面埋管抽放瓦斯的实践
- Status and Development Trends of Gas Drainage in Coal Mine of China 我国煤矿抽放瓦斯现状及发展前景
- Fractured zone has a crudity surface with a pitch. 断裂带表面粗糙，并带有斜度。
- Gas drainage in seam with large auto variable diameter bore holes 自动变径大直径钻孔抽放煤层瓦斯试验
- It is controled by fracture in the contact zone between Precambrian system and Lower Palaeozoic migmatitic gneiss and Yanshanian granite.Ore bodies occur absolutely in fractural zone as veins, lens. 矿床产出受前寒武系及下古生界混合片麻岩与燕山晚期花岗岩之间的接触带断裂构造控制,矿体严格产于断裂带内部,呈脉状、透镜状。
- Azimuthal AVO inversion of P-wave in fractured medium. 裂缝介质的纵波方位AVO反演研究
- Practice on Gas Drainage in Special Thick Seam of Low-breathe Freely 高位钻孔抽放低透气性特厚煤层瓦斯的实践
- Title： Azimuthal AVO inversion of P-wave in fractured medium. 关键词：方位AVO;反演;裂缝介质;近似反射系数
- altered rock type copper deposit in fracture zone 破碎带蚀变岩型铜矿床
- Support with binding Bar, Bolting and Shotcrete for Large Cross-sectional Chamber in Fractured Zone 破碎带大断面硐室绑筋锚喷支护
- Clear ship movements of the fractured zone are observed by extensometers. 用延伸仪曾观测到断裂区有清楚的滑动。
- Numerical Test of Gas Drainage in Low Air Permeability Coal Seam by Rifting Slots 割缝排放低透气性煤层瓦斯过程的数值试验
