【作者】 夏洪满；

【导师】 何满潮；

【作者基本信息】 中国矿业大学（北京） ， 岩土工程， 2013， 博士

【摘要】 随着煤矿开采深度的不断增加，冲击地压发生矿井数量和危害程度呈迅速上升趋势，现有的支护对巷道掘进和服务期间发生的冲击地压没有很好的防治作用，根本原因在于支护材料不能满足在冲击荷载下产生足够的变形量吸收围岩变形能，同时保持恒定的支护阻力。本文主要以恒阻值为350KN的新型高恒阻大变形锚索的力学特性及现场模拟冲击地压的防冲试验为主要研究内容，通过一系列室内静力学拉伸试验和动力冲击实验，验证了新型高恒阻大变形锚索具有在冲击作用下产生滑移变形且保持高恒阻的防冲力学特性，对该锚索与巷道围岩相互作用的机理进行了详细研究。首次提出了采用高恒阻大变形锚索材料为防冲支护材料，在现场采用爆破的形式模拟冲击地压的防冲试验方案，并在红阳三矿北一1213回风联络巷进行该锚索与普通锚索对比的现场试验，同时对锚索受力进行了全时域实时监测，对比试验结果验证了室内高恒阻大变形锚索防冲力学特性实验研究，揭示了高恒阻大变形锚索防冲机理是具有吸收能量的同时保持恒阻的特性，表明高恒阻大变形锚索比普通锚索具有很好的抗冲击性能，防冲效果良好。更多还原

【Abstract】 With increasing depth of coal mining, the number of rockburst occurrence andendanger degrees rise rapidly, since the existing support system is not effective forpreventing rockburst during tunnel excavation or serving time, mainly because thesupporting material can’t meet the the deformation as well as the energy absorptioncaused by impact loading to the surrounding rocks, while maintaining a constantsupport resistance. In this paper, we introduce a high constant resistance(350KN) largedeformation anchor cable with its mechanical properties and in-site simulation ofrockburst prevention impact test as the main research content, through a series of statictensile and dynamic impact laboratory tests to verify the new anchor cable with largedeformation resistance under the action of impact while keeping slip deformation. Themechanism of this anchor cable’s interaction with surrounding rock in tunnels hascarried on in detailed study. First put the anchor cable material into use as supportingmaterial and put forward the field impact resistance test of simulation rockburst by blasting which performed at No.1213tunnel in Hongyang mine with the comparation ofour anchor cable and traditional ones. At the same time, by performing real-timemonitoring of anchor cable stress and comparing the test results with laboratory testsshows the mechanism properties of this kind of cable, that is the ability of absorbingenergy while maintaining constant resistance, and it have better performance thantraditional cables with good impingement effect.更多还原