combined blowing

Water inflow forecast from roof and floor in the deep area of No.1 panel;

深部首采工作面顶底板涌水量预计

Based on analysis of characteristics of the roof and floor of each minable seam,this paper demonstrated some common issues occurring in underground working activities,providing reliable data for helping shaft geologists with their engineering design and construction and then contributing to mining activities in a better way.

通过对童亭井田各可采煤层顶底板特性分析,对不同顶底板岩性及采掘中遇见的问题进行了说明,为矿井地质工作人员设计、施工提供了可靠的地质依据,以更好地为矿井生产服务。

On the basis of digital acoustic logging and density logging data, the stability of theroof and floor of the main workable coal seams in Hanzhuang wellfield of Qinshui coalfield,Shanxi.

根据数字声波测井和密度测井资料，讨论了山西沁水煤田韩庄井田主要可采煤层顶底板的稳定性。

Stope stability analysis of using upward continous draft-filling stoping to withdraw top and bottom pillar;

上向连续进路尾砂充填法回采顶底柱的采场稳定性分析

By means of remaining slag operation the less slag steelmaking was realized by using new technological process of basic oxygen steelmaking and hot metal pretreatment.

通过实施留渣操作,采用顶底复吹和铁水预处理新工艺实现了少渣冶炼,从而降低了石灰消耗,提高了钢水收得率。

3D non-linear finite element analysis of top-seat-angle steel connections;

顶底角钢连接节点的非线性有限元分析

This paper presents an approach to the refined parametric three-dimensional non-linear analysis of the semi-rigid steel beam-column connections of top-seat-angle.

本文对采用顶底角钢连接的半刚性钢梁柱连接节点进行了精细的三维非线性有限元分析,在与实验数据对比的基础上,对影响该连接性能的主要参数如角钢厚度、柱翼缘连接螺栓与梁翼缘间的距离等进行了分析,得到了其弯矩-转角曲线。

An approach for refined parametric 3D non-linear analysis of semi-rigid steel beam-column connections of top-seat-angle with double web-angle is presented.

对采用带双腹板角钢、顶底角钢连接的半刚性钢梁柱连接节点进行了三维非线性有限元分析。