岩石力学与工程学报
巖石力學與工程學報
암석역학여공정학보
CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING
2014年
9期
1873-1879
,共7页
杨更社%屈永龙%奚家米
楊更社%屈永龍%奚傢米
양경사%굴영룡%해가미
采矿工程%白垩系地层%热物理力学性质%冻结压力%温度场
採礦工程%白堊繫地層%熱物理力學性質%凍結壓力%溫度場
채광공정%백성계지층%열물리역학성질%동결압력%온도장
mining engineering%cretaceous strata%thermal and mechanical properties%frozen pressure%temperature field
为解决人工冻结技术在西部井筒穿越白垩系富水地层的技术难题，以甘肃新庄矿风立井冻结工程为背景，通过室内物理力学试验、现场实测及有限元数值模拟，对冻结状态下白垩系地层岩石的热物性及力学特性进行研究，探讨凿井期冻结壁的受力机制，重点分析白垩系冻结壁的冻结压力变化规律和成因，对比测温孔与冻结壁径向温度的实测与模拟结果，拟合得出冻结壁受混凝土水化热的影响范围为440～480 mm。研究结果为丰富我国岩石力学的基础理论研究起到积极作用，也可对西部冻结法凿井的优化设计和安全稳定性研究提供依据。
為解決人工凍結技術在西部井筒穿越白堊繫富水地層的技術難題，以甘肅新莊礦風立井凍結工程為揹景，通過室內物理力學試驗、現場實測及有限元數值模擬，對凍結狀態下白堊繫地層巖石的熱物性及力學特性進行研究，探討鑿井期凍結壁的受力機製，重點分析白堊繫凍結壁的凍結壓力變化規律和成因，對比測溫孔與凍結壁徑嚮溫度的實測與模擬結果，擬閤得齣凍結壁受混凝土水化熱的影響範圍為440～480 mm。研究結果為豐富我國巖石力學的基礎理論研究起到積極作用，也可對西部凍結法鑿井的優化設計和安全穩定性研究提供依據。
위해결인공동결기술재서부정통천월백성계부수지층적기술난제，이감숙신장광풍립정동결공정위배경，통과실내물리역학시험、현장실측급유한원수치모의，대동결상태하백성계지층암석적열물성급역학특성진행연구，탐토착정기동결벽적수력궤제，중점분석백성계동결벽적동결압력변화규률화성인，대비측온공여동결벽경향온도적실측여모의결과，의합득출동결벽수혼응토수화열적영향범위위440～480 mm。연구결과위봉부아국암석역학적기출이론연구기도적겁작용，야가대서부동결법착정적우화설계화안전은정성연구제공의거。
The physico-mechanical characteristics of cretaceous rocks in frozen conditions were studied with the laboratory testing,the field measurement and the finite element simulation. The frozen mechanism of the shaft wall during the period of shaft excavation was discussed;and the variation and causes of freezing pressure in the frozen wall in the cretaceous layer were analyzed in detail. The measured temperatures on the frozen wall and in the thermometer holes were compared with the simulated results yielding the influence range of heating of the concrete hydration on the frozen wall to be 440-480 mm.
