2011年5月下 施工技术 第40卷第341期 CONSTRUCTION TECHNOLOGY 77 地下煤斗沉井施工技术 吴敏，冉斌 (中建三局第二建设工程有限贵任公司，湖北武汉430074) [摘要]由于沉井施工技术具有施工安全、质量可靠、操作方便、施工工期短，经济效益显著等优点，最终确定为地 下煤斗施工方案.介绍了煤斗沉井施工工艺流程及操作要点，如沉井制作、井简加固措施、沉井下沉主要方法和描 施、并内挖土和土方吊装方法，沉井封底主要方法和抗浮稳定性验算等.总结得出施工中一系列质量和安全控制 措施. [关键词]地下煤斗；沉井施工；质量措施；安全措施 [中图分类号]TU753.64 [文献标识码]A [文章编号]1002-8498(2011)10-0077-03 Caisson Construction Technology for Underground Coal Hopper Wu Min.Ran Bin The Second Conatruction Engineering Co.Lad.China Conatruction Third Engineering Bureau Wuhan Hubei 430074 China) Abstract:For caisson construction technology has lots of advantages such as construction safety reliable quality easy operation short construction period as well as having a good economic benefit the construction of underground coal hopper decides to use this technology finally.The construction process and key operations of caisson construction are introduced such as caisson making reinforcement measures of wells shaft main method and measures of caisson sinking wells excavation and earth hoisting the methods of closing the bottom of caisson and its anti-floating design ete.Measures for construction quality and construction safety are concluded at last. Key words:underground coal hopper;caisson construction;quality control;safety measure 地下煤斗为输煤系统建（构）筑物中最深结构，身混凝土达到一定强度后，在井内挖土使土体降低， 通常深1m 四周临近斗轮机基础、紧急事故平台.沉井简身依靠自重克服其与土壁间的摩阻力，下沉 百通电厂工程地下煤斗结构尺寸（长×宽×高）：直至设计标高，经就位校正后进行封底处理. 17m×8m×10m 结构壁厚1m. 3煤斗沉井施工工艺流程及操作要点 1沉井施工技术特点 3.1工艺流程 ①施工安全利用自身混凝土结构作为支护， 工艺流程：施工准备→工程测量定位放线→...
地下煤斗沉井施工技术.pdf
