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- STUDY OF GELATINOUS FRACTURING FLUID AND APPLICATION IN COAL SEAM DEFORMATION 凝胶压裂液的研究及在煤层改造中的应用
- SIP analysis on coupled models for coal seam deformation and gas leakage flow 煤层气越流固气耦合数学模型的SIP分析
- coal seam deformation 煤层形变
- FEM-NTA is a finite element method.As rockmass can't bear tensile stress in the process of deformation and failure,the non-tensile stress constitute model was built after coal seam was excavated. 考虑岩体变形破坏时不能承受拉应力,FEM-NTA耦合模型法采用有限元分析方法,建立煤层采动后覆岩变形破坏的无拉应力本构模型。
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- The results show that there is a good relation between EMR and the coal stress state, and there are various stress states and deformation and fracture states in coal seam of working faces. 结果表明:电磁辐射变化与煤体应力状态有较好的对应关系,工作面煤体内部具有多种应力状态和变形破裂状态。
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- The Gaussian curvature of No.3 coal seam in Qinshui basin is calculated. 计算了沁水盆地3号煤层的高斯曲率。
- Factors affected coal seam permeability change and its law is analyzed. 分析了煤层透气性变化的影响因素及变化规律。
- The outburst-proneness of 6# coal seam are studied with five indexes. 采用5种指标对该矿6%23煤层冲击倾向性进行了实验研究。
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
- The way and principle of Gaussian curvature method for forecasting natural fracture zones in coal seam are discussed. 摘要论述了高斯曲率法预测煤层天然裂隙发育区的基本原理和方法。
- Outburst prevention technique of excavating in coal seam will be directly concerned colliery safety production and excavates taking over. 摘要突出煤层煤巷掘进防突直接关系到煤矿的安全生产和采掘接替。
- The interaction of gas folw,methane desorption,coal deformation and development and propagation of damage in coal seams have been taken into account. 模型中考虑了气体流动,瓦斯吸附,煤介质的变形及煤层中损伤的发展与传播间的相互影响。
- Long- wall double working- face combined winning technical practice in faull lager small section coal seam. 断层带小块段煤层走向长壁双工作面联合开采技术实践。
- Research on coal bedding structure is the theory foundation and precondition of coal seam gas exploitation. 煤体层理结构的研究是煤层气开发开采的理论基础和前提条件。
- So it is feasible used the logging data to forecast coal seam gas content,and the applied value is enhance further. 证明用测井资料预测煤层瓦斯含量是可行的,从而进一步加强了测井资料的实际应用价值。
- The authors used the Analytic Hierarchy Process(AHP) in the researches of coal seam floor water-irruption. 将系统工程中的层次分析法引入煤层底板突水的研究中。
- The technology of roadway protection with coal waste residue concrete and application in thin coal seam are introduced. 介绍了煤矸渣混凝护巷技术及其在薄煤层中的应用。
- The main coal seam of Taiping colliery is 11~# coal seam with a thickness of 1.5 m. 太平煤矿主采11%23煤层;煤厚1.;5 m