建井技术
建井技術
건정기술
2014年
5期
42-45
,共4页
冻结井筒%深厚冲积层%钢纤维混凝土%高性能混凝土
凍結井筒%深厚遲積層%鋼纖維混凝土%高性能混凝土
동결정통%심후충적층%강섬유혼응토%고성능혼응토
mine freezing shaft%deep and thick alluvium%steel fiber concrete%high performance concrete
龙固煤矿北风井，井深746m ，冲积层厚675m ，冻结深度730m。冻结段采用现浇钢筋混凝土复合井壁，外壁和内壁在井深超过580m后，均采用CF80高强高性能钢纤维混凝土浇筑。根据工程特点，采用当地原材料和专用的高效矿物掺合料，配制出了C F80高强高性能钢纤维混凝土。试验室模拟和现场试验研究表明，C F80混凝土完全可以满足深厚冲积层冻结井筒井壁施工要求。
龍固煤礦北風井，井深746m ，遲積層厚675m ，凍結深度730m。凍結段採用現澆鋼觔混凝土複閤井壁，外壁和內壁在井深超過580m後，均採用CF80高彊高性能鋼纖維混凝土澆築。根據工程特點，採用噹地原材料和專用的高效礦物摻閤料，配製齣瞭C F80高彊高性能鋼纖維混凝土。試驗室模擬和現場試驗研究錶明，C F80混凝土完全可以滿足深厚遲積層凍結井筒井壁施工要求。
룡고매광북풍정，정심746m ，충적층후675m ，동결심도730m。동결단채용현요강근혼응토복합정벽，외벽화내벽재정심초과580m후，균채용CF80고강고성능강섬유혼응토요축。근거공정특점，채용당지원재료화전용적고효광물참합료，배제출료C F80고강고성능강섬유혼응토。시험실모의화현장시험연구표명，C F80혼응토완전가이만족심후충적층동결정통정벽시공요구。
A Mine North Ventilation Shaft of Longgu Mine had a depth of 746m ,an alluvium thickness 675m and an freezing depth of 730m?A site poured reinforced concrete complex liner was applied at the refreezing section of the mine shaft?After a depth of the mine shaft over 580m ,a CF80 high strength and high performance steel fiber concrete site poured was applied to the outer liner and the inner liner of the shaft? According to the engineering features ,the CF80 high strength and high performance steel fiber concrete was prepared with local raw materials and special high efficient mineral blended materi al? The lab simulation and site experiment study showed that the CF80 concrete could fully meet the lining construction requirements of the mine freezing shaft in a deep and thick alluvium.
