It was revealed that the most important factors in pore-expanding process were the type and concentration of expanding agents .
多孔羟基磷灰石(HA)陶瓷的气孔率和贯通性是重要参数,实验分析了影响多孔HA陶瓷成型与贯通的诸因素,提出提高多孔体微孔贯通与扩张的方法,选择对半烧结的陶瓷坯体有一定腐蚀作用的扩孔剂进行扩孔实验。
The A review is provided of the manufacturing process and installing methods of pore-expanded titanium mesh anodes.
扩孔钛网阳极具有电流荷载能力较强、在阴极保护中能提供重现性较好的电流、杂散电流少、安装省时省力等特点,在钢筋混凝土结构表面的阴极保护工程中受到了广泛的关注。
Water jet soil reaming technology and its influencing factors;
水射流土层扩孔技术及影响因素
These technologies include loading seal before drilling and safety drilling in,reaming,drilling fluid and cementing,by which can smoothly realize drillling in the extremely thick salt-gypsum bed in super-deep hole.
通过塔河油田沙114、沙115、沙116等这些重点井的钻探,针对盐膏层的复杂情况,形成了一系列超深井巨厚盐膏层钻井技术,主要包括钻开盐膏层前承压堵漏技术、岩膏层安全钻进技术、扩孔技术、钻井液技术等,实现了超深井巨厚盐膏层的安全顺利钻进。
The paper introduces the reaming technology of lateral drilling,discusses the mechanism of reducing reservoir damage by using reaming technique.
介绍了侧钻井扩孔施工工艺 ,探讨了用扩孔技术减少侧钻井油层损害的机理。
Equation of soil bore enlarging with submerged water jet and experimental study;
淹没水射流土层扩孔方程
Analytical solution to cavity expansion in strain-softening soils with Tesca yield criterion and its applications;
应变软化Tresca材料中扩孔问题解答及其应用
In order to analyze the mechanical mechanism of fracture grouting during the early phase by using the theory of large-deformation and plastic mechanics,the early phase of fracture grouting is regarded as the question of cavity expansion in infinite soil.
根据应力平衡方程以及应力和应变连续的边界条件,推导出劈裂灌浆初始阶段的最终扩孔压力和最终扩孔半径的理论解答。
In order to analyze the mechanical mechanism of compression grouting and give the analytical solution of the ultimate grouting pressure,the process of compaction grouting is considered as the question of cavity expansion in infinite soil mass.
为了能够从能量的角度分析压密注浆的力学机理,并给出注浆压力的理论解,将整个注浆过程视为无限土体中的圆孔扩张问题,根据注浆过程中能耗区土体在注浆压力和静止土压力作用下的应力、应变和体变关系以及注浆扩孔过程中的能量和体变守恒原理,推导出压密注浆极限注浆压力的理论解答。