硬岩泄水洞"取芯+劈裂"非爆法施工技术及改进

陈钰

doi:10.3973/j.issn.2096-4498.2023.S1.051

隧道建设 >

2023 , Vol. 43 >Issue S1: 443 - 450

DOI: https://doi.org/10.3973/j.issn.2096-4498.2023.S1.051

施工技术

硬岩泄水洞"取芯+劈裂"非爆法施工技术及改进

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（昭通市交通建设工程质量安全监督局，云南昭通 657000）

陈钰（1979—），男，云南昭阳人，2011年毕业于西南科技大学，土木工程专业，本科，高级工程师，现从事公路工程质量安全监督管理工作。Email： 406297972@qq.com。

网络出版日期: 2023-08-28

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Construction Technology and Improvement of "Coring + Splitting" NonExplosive Method for Hard Rock Water Releasing Tunnel

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(Zhaotong Municipal Transportation Engineering Quality and Safety Supervision Bureau, Zhaotong 657000, Yunnan, China)

Online published: 2023-08-28

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摘要

为解决复杂环境下(不允许爆破)硬岩（如Ⅱ、Ⅲ级围岩）小断面隧洞非爆掘进工法选择难题，基于非爆工法适用性比选，采用“周边取芯+中部劈裂”非爆开挖进行现场施工，分别对其环境影响及施工效果进行分析。研究及试验结果表明：“周边取芯+中部劈裂”非爆开挖技术较适用于复杂环境条件下整体性良好的硬岩或中硬岩（Ⅱ、Ⅲ级围岩）隧洞掘进；小型“周边取芯+中部劈裂”机具施工时，其劳动强度大，施工效率不高，安全性亦不佳，日进尺在1 m左右。为提高非爆条件下大断面硬岩或中硬岩（Ⅱ、Ⅲ级围岩）隧道安全快速掘进，研制或应用大型钻劈一体机及其施工工艺势在必行。

关键词： 非爆开挖; 泄水洞; 小断面; 铁路运营隧道; 坚硬岩; 取芯劈裂; 钻裂一体机

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陈钰 . 硬岩泄水洞"取芯+劈裂"非爆法施工技术及改进[J]. 隧道建设, 2023 , 43(S1) : 443 -450 . DOI: 10.3973/j.issn.2096-4498.2023.S1.051

Abstract

To select appropriate nonexplosive construction technologies for small crosssection tunnel in complex hard rocks, the nonexplosive construction technology of peripheral coring and central splitting is adopted and its influence on surrounding environment and construction effect are analyzed. The analytical and test results show the following: (1) The recommended nonexplosive construction technology is applicable to tunneling in relatively favorable hard rock or mediumhard rock (Grades Ⅱ and Ⅲ surrounding rocks). (2) The smallscale construction machinery and tools have disadvantages such as high working intensity, low tunneling efficiency, and poor safety, resulting in low advancing speed of 1 m/d. As a result, largescale drillingsplitting integrated machinery and its construction technology should be developed.

Key words： nonexplosive excavation; water ; releasing tunnel；small crosssection; operation railway tunnel; hard rock; core drilling + splitting; drillingsplitting integrated machinery

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