介绍了旋转射流扩孔技术的基本原理、设备、工艺以及现场的试验情况。
Introduce the basic principles, equipments, techniques and spot experimental conditions of expanded hole of technology of rotation jet.
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。
The paper introduces the reaming technology of lateral drilling, discusses the mechanism of reducing reservoir damage by using reaming technique.
提出了合理爆扩参数、爆扩孔装填结构、爆扩方式、安全控制等同步爆扩法处理高速公路液化土地基的关键技术和实施方法。
The key technology and optimum constructing method treating the liquefied soil foundation such as reasonable parameters, charging structure, blast-enlargement mode, and safety control were proposed.
高压水射流径向水平孔钻进技术是水平孔施工技术之一，它是在垂直瓦斯抽放或煤层气勘探钻孔布置机械或水力扩孔装置，对准选定的煤层部位进行扩孔。
As one of radial horizontal drilling techniques, high pressure water jet drilling technology is capable of using mechanical or water jet apparatus to make a cavity at the selected coal seam.
用迈步式扩孔刀头钻凿天井是一项新技术，该技术能够用小钻机钻凿大天井。
The use of sequential reaming head for raising is a new technology, which can make a small-sized drill to be used for boring a large-sized raise.
论文主要开展以下几个方面的工作：1。研究了浆囊袋注浆扩孔土钉新技术。
Thesis work carried out in the following areas:1. Study the new slurry grouting pocket reaming soil nail technology.
高压水射流扩孔为提高低透气性煤层的瓦斯抽放效果和扩大防突措施的效果提供了一个可行的技术途径。
The hole enlargement by high - pressure water jet provided a feasible technical way for raising gas drainage effect from coal seam in low permeability and improving the effect of outburst pre...
宝钢高扩孔用热轧酸洗钢带是采用先进的控轧控冷技术生产的具有高的扩孔率、优良的成形性能和焊接性能。
Using advanced TMCP technology, Baosteel's hot-rolled pickled strip for high hole expansion has high expansion rate and excellent forming and welding properties.
宝钢高扩孔用热轧酸洗钢带是采用先进的控轧控冷技术生产的具有高的扩孔率、优良的成形性能和焊接性能。
Using advanced TMCP technology, Baosteel's hot-rolled pickled strip for high hole expansion has high expansion rate and excellent forming and welding properties.
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