| 关于地下洞室喷混凝土支护效果的实践与探讨 |
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| 引用本文： | 鲍永龙,张继胜. 关于地下洞室喷混凝土支护效果的实践与探讨[J]. 电网与水力发电进展, 2007, 23(2): 77-78,81 |
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| 作者姓名： | 鲍永龙 张继胜 |
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| 作者单位： | 黄河上游水电开发有限公司拉西瓦建设分公司 青海贵德811700(鲍永龙)，中国水利水电第四工程局 西宁810000(张继胜) |
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| 摘 要： | 地下洞室开挖后,在地应力、不利地质结构面和施工等因素影响下,围岩表面常发生岩爆、片帮、剥落、掉块及局部塌方等现象。拉西瓦水电站引水发电系统地下洞室的开挖支护经验表明,混凝土喷层的作用,只有在其粘结力得到保证的情况下才能充分发挥。网喷混凝土很少脱落,防止岩爆的效较好,比钢纤维喷混凝土较之安全、经济。
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| 关 键 词： | 地下洞室 开挖支护 网喷混凝土 素喷混凝土 钢纤维喷混凝土 |
| 文章编号： | 1671-4768(2007)02-0077-02 |
| 修稿时间： | 2007-01-25 |
Discuss on Protective Effects of Insufflations of Grotto Concrete Layer and its Practice |
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| BAO Yong-long,ZHANG Ji-sheng. Discuss on Protective Effects of Insufflations of Grotto Concrete Layer and its Practice[J]. Advance of Power System & Hydroelectric Engineering, 2007, 23(2): 77-78,81 |
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| Authors: | BAO Yong-long ZHANG Ji-sheng |
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| Abstract: | When excavation of Grotto undertaking,some failures would appear on the surface of wall rock,such as rock burst,rib spalling,peel,rock drop and landslide etc.It was shown by grotto excavation experience of water diversion of Laxiwa hydropower station project that the insufflate layers of concrete play a function role only when the cohesive force was ensured.The insufflate concrete with steel net was not breaked off for rock burst prevention,of which the safe and economic features were better than that of insufflate concrete with steel fiber. |
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| Keywords: | grotto excavation protection insufflate concrete with steel net insufflate concrete insufflate concrete with steel fiber |
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