High-strength steel tubular confined concrete supports support technology for large section soft rock inclined shaft
High-strength steel tubular confined concrete supports support technology for large section soft rock inclined shaft
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大断面软岩斜井高强钢管约束混凝土支护支护技术
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Wang, Chao
中科院分区：
文献类型：
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作者：
Yang, Ren-Shu;Gao, Yan-Fa;He, Xiao-Sheng;Wang, Chao
察干诺尔矿主斜井泥岩带巷道围岩变形大、变形快，巷道支护困难。结合查干纳尔矿主斜井泥岩带膨胀软岩工程地质条件和主倾斜泥岩带巷道变形特点，设计了高强钢管约束混凝土支护方案，巷道支护断面为马形断面，STCCS主钢管选用194 mm ×10 mm无缝钢管，C40钢纤维混凝土填充，辅助金属网支撑和混凝土喷层支撑。数值分析结果表明，主斜井泥岩开挖后应及时实施STCCS支护方案，STCCS的高承载能力可以提供强大的支护反力，限制巷道围岩对巷道空间的影响，保证围岩的稳定性和支护结构的可靠性。同时，通过现场施工分析和现场监测，STCCS支护方案施工简便，能够保持主斜井软岩巷道围岩的稳定性。
Roadway surrounding rock have the large and fast deformation in main inclined shaft mudstone zone of Chagannaoer Mine,roadway support is difficult. Combined with expansive soft rock engineering geological conditions of main inclined shaft mudstone zone of Chagannaoer Mine and the roadway deformation characteristics of main inclined mudstone zone,high strength steel tubular confined concrete supports( STCCS) support program was designed,in which,the roadway support sections is horseshoe section,the selected main steel tube of STCCS is 194 mm ×10 mm seamless steel tube,filled with the C40 steel fibre reinforced concrete,assisted metal mesh supporting and concrete sprayed layer supporting. By numerical analysis,the results show,STCCS support programs should be timely imposed after the excavation of the main inclined shaft mudstone the,the high bearing capacity of STCCS can provide powerful support reaction force and limit roadway surrounding rock to the roadway space and ensure the stability of the surrounding rock and the reliability of supporting structure. Meanwhile,by analysis on on-site construction and onsite monitoring,STCCS supporting program is easy to construction,and be able to maintain the stability of soft rock roadway surrounding rock of main inclined shaft.