| 让压中空涨壳注浆锚杆在大变形隧道的应用 |
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| 引用本文： | 田振宇. 让压中空涨壳注浆锚杆在大变形隧道的应用[J]. 山西建筑, 2014, 0(4): 171-173 |
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| 作者姓名： | 田振宇 |
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| 作者单位： | 兰新铁路甘青有限公司,甘肃兰州730000 |
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| 摘 要： | 在高地应力软岩大变形隧道施工中,采用了让压中空涨壳注浆锚杆技术,通过综合应用钢质涨壳锚固、让压锚具合理滑移、垫板承托受力、中空注浆等技术,改善了系统锚杆参与受力的同时参与让压形变,合理将主动支护与被动支护相结合,有效的抑制了围岩开挖后收敛及沉降变形过大,控制了变形侵限,确保了施工安全。
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| 关 键 词： | 让压中空涨壳注浆 高地应力 软岩大变形 锚杆技术 |
Let the pressure hollow shell grouting bolt stress application techniques of large deformation of soft rock tunnel |
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| TIAN Zhen-yu. Let the pressure hollow shell grouting bolt stress application techniques of large deformation of soft rock tunnel[J]. Shanxi Architecture, 2014, 0(4): 171-173 |
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| Authors: | TIAN Zhen-yu |
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| Affiliation: | TIAN Zhen-yu ( Lanzhou-Xinjiang Railway Gansu-Qinghai Co. , Ltd, Lanzhou 730000, China) |
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| Abstract: | In the highlands to construction of large deformation of tunnel in soft rock by force, let the pressure hollow shell bolt grouting technolo gy, by comprehensive adoption of techniques, including the steel expansion anchoring, yieldable anchoring reasonable slip, the underboaring bearing strees, and hollow grouting, make full use of the system in force in anchor and let the pressure deformation, reasonable will actively sup port and passive support combination, effectively inhibit the surrounding rock convergence and subsidence deformation is too large, control the de formation invading limit, to ensure the construction safety. |
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| Keywords: | let the pressure grouting hollow shell high ground stress deformation of soft rock the anchor technology |
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