CAJ | 학술논문

依托关角隧道河谷浅埋段，展开富水软弱围岩隧道支护受力特征及方案的研究。对试验段的初支围岩压力、钢架应力、锚杆轴力、衬砌水压力进行现场监测，结果表明：初支应力不能得到有效控制、突水突泥塌方现象时有发生，现有的支护方案无法满足浅埋段安全施工要求。在监测数据基础上，经过综合分析，对支护方案作出调整。在Ⅴ级围岩区段，拱部120°范围设超前管棚和小导管，宽大节理掌子面超前小导管注浆加固，初期支护取消系统锚杆，采用I20型钢钢架和拱墙设双层钢筋网；在Ⅵ级围岩区段，超前支护采用管棚工作室施作拱部180°及以下1 m范围的0°角长管棚，全断面超前水平钻孔注浆，初期支护取消系统锚杆，采用I20型钢钢架、三台阶型钢临时横撑和双层防水板。研究成果可为河谷浅埋隧道支护方案的确定提供理论依据和基础数据，为同类工程的设计与施工决策提供借鉴。
의탁관각수도하곡천매단，전개부수연약위암수도지호수력특정급방안적연구。대시험단적초지위암압력、강가응력、묘간축력、츤체수압력진행현장감측，결과표명：초지응력불능득도유효공제、돌수돌니탑방현상시유발생，현유적지호방안무법만족천매단안전시공요구。재감측수거기출상，경과종합분석，대지호방안작출조정。재Ⅴ급위암구단，공부120°범위설초전관붕화소도관，관대절리장자면초전소도관주장가고，초기지호취소계통묘간，채용I20형강강가화공장설쌍층강근망；재Ⅵ급위암구단，초전지호채용관붕공작실시작공부180°급이하1 m범위적0°각장관붕，전단면초전수평찬공주장，초기지호취소계통묘간，채용I20형강강가、삼태계형강림시횡탱화쌍층방수판。연구성과가위하곡천매수도지호방안적학정제공이론의거화기출수거，위동류공정적설계여시공결책제공차감。
Shallow-buried-section-under-river-valley-of-Guanjiao-tunnel-has-been-done-a-se-ries-of-research-on-support-mechanical-behaviour-and-scheme-for-tunnel-in-weak-surrounding-rock-with-rich-water.-Pressure-of-surrounding-rock,stress-in-the-steel-frames,axial-force-of-rock-bolts-and-water-pressure-on-lining-are-obtained-by-monitoring-in-test-section.-The-result-in-dicates-that-primary-support-can’t-be-effectively-controlled,inrush-of-clay-and-water-and-col-lapse-occour-sometimes,and-the-present-support-scheme-can’t-meet-the-safe-construction-re-quirements.-By-a-comprehensive-analysis-of-monitoring-data,adjustment-to-support-scheme-is-made.-InⅤclass-surrounding-rock-section,lead-pipe-shed-and-small-pipe-is-set-in-the-range-of-120°-at-arch-part;grouting-reinforcement-with-small-pipe-is-conducted-in-wide-joints-of-driving-face.-Five-meters-grouted-rock-bolts,I20-steel-frames-and-double-layer-mesh-at-arch-wall-consti-tute-the-primary-support.-InⅥclass-surrounding-rock-section,0°-lead-pipe-shed-set-with-pipe-shed-workroom-in-the-range-of-180°-at-arch-part-and-1-m-below-and-whole-section-advance-level-drilling-grouting-are-the-main-measures-of-advance-support;7.5-m-self-drilling-bolt,I20-steel-frames,steel-temporary-support-and-double-waterproof-board-constitute-the-primary-support.-These-research-results-can-provide-theoretical-basis-and-underlying-data-for-support-scheme-for-shallow-buried-tunnel-under-river-valley,and-have-high-referential-value-for-design-and-con-struction-decision-making-of-analogous-project.