内钢板高强钢纤维混凝土井壁力学特性研究 .pdfVIP

学兔兔 煤 炭 工 程 第48卷第3期 COAL ENGINEERING Vo1．48．No．3 doi：10．1 1799／ce201603032 内钢板高强钢纤维混凝土井壁力学特性研究 齐善忠 ，杨维好 (1．黄河水利职业技术学院，河南开封 475004； 2．中国矿业大学深部岩土力学与地下工程国家重点实验室，江苏徐州 221008) 摘 要：针对特厚(600～800m)冲击层中煤矿立井井筒支护问题，提出了使用内钢板一高强 钢纤维混凝土复合井壁结构，为研究该井壁结构的水平承载特性，利用相似理论推导，采用物理 模拟试验的方法，进行了4个模型井壁的破坏性试验，研究了该类井壁结构的水平承载特性和变 形特征。研究表明，内钢板一高强钢纤维混凝土复合井壁属约束混凝土结构，是特厚冲积层中井 筒支护理想的井壁结构形式之一。 关键词：特厚冲积层；内钢板；高强钢纤维混凝土；复合井壁 中图分类号：TD265．3 2 文献标识码：A 文章编号：1671—0959(2016)03．0103—04 Study of mechanical characteristics of high-。strength steel fiber reinforced concrete shaft lining with inner steel plate QI Shan-zhong ，YANG Wei-hao (1．Yellow River Conservancy Technical Institute，Kaifeng 475004，China； 2．State Key Laboratory for Geomechanics and Deep Underground E．gineering，China University of Mining and Technology， Xuzhou 221008，China) Abstract：Aiming at the suppon problems of the shaft lining in extra thick(from 600m tO 800m in depth)alluvium ranging，the paper proposes a composite shaft wall structure using high—strength steel fiber reinforced concrete with inner steel plate．To study its horizontal bearing and deformation characteristics，4 shaft wall model destructive tests are performed with the physical simulation based on the similarity theory．The result shows that，it belongs to constraint concrete structure which can give full play to the capability of steel plate and steel fiber concrete，and shows favorable bearing capacity and tensility． Keywords：extra—deep alluvium；inner steel plate；high—strength steel fiber reinforced concrete；composi