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锚索支护技术在我国煤矿应用发展较快，其特点是锚索可锚入到深部较稳定的岩层中并可施加预应力。详细介绍了ＭＨ型煤矿巷道锚索系列的结构形式和工艺特点。通过所列举的工程应用实例，说明了这种巷道锚索在大硐室支护、破损巷道及不良地层加固方面所起的重要作用和显著效益。 相似文献
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A new method for determining the incremental cohesion △Cm of surrounding rock due toprestressed cable anchor is presented, and the formulas for △Cm are deduced and ACredistributions also are discussed, based on the two anchorage effects, one is the effect with theprestressed value △Q3 of cable anchor improving the stress state of surrounding rock andincreasing the surrounding rock strength, the other is the fully encapsulated effect. Thedetermined incremental cohesion △Cm is subjected to the model test and field measurement in thereferences, and coincides well with those tested results. The formulas for △Cm can be used indesigning supoport parameters and related numerical analyses of prestressed cable anchor. 相似文献
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某疗养院餐厅系20世纪50年代建筑,其一层地板、梁因年久失修产生大量裂缝。通过研究结构的破坏机理,介绍了JCT金草田堵缝、粘钢与碳纤维加固技术在结构加固中的设计原理、计算方法及施工技术与工艺,对加固技术的进一步发展进行了探索和研究。 相似文献
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