| 深厚表土层冻结外层井壁受力状况的监测及分析 |
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| 引用本文： | 蔡海兵,程桦,姚直书,荣传新. 深厚表土层冻结外层井壁受力状况的监测及分析[J]. 煤炭科学技术, 2009, 37(2) |
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| 作者姓名： | 蔡海兵 程桦 姚直书 荣传新 |
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| 作者单位： | 蔡海兵,姚直书,荣传新,CAI Hai-bing,YAO Zhi-shu,RONG Chuan-xin(安徽理工大学,安徽,淮南,232001);程桦,CHENG Hua(安徽理工大学,安徽,淮南,232001;安徽建筑工业学院,安徽,合肥,231001) |
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| 基金项目： | 安徽省优秀青年科技基金 |
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| 摘 要： | 针对许疃煤矿中央风井深厚表土冻结凿井的技术难题,通过对冻结井壁受力状况的实时监测,获取了冻结压力、外层井壁钢筋应力和混凝土应变等数据.监测结果表明,冻结压力与深度并不一定成正比,其大小受土层层厚影响较大,且呈现出不均匀性;竖向钢筋主要承受温度拉应力,环向钢筋主要承受冻结压力引起的压应力;混凝土应变和钢筋应力的变化趋势基本保持一致.
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| 关 键 词： | 深厚表土层 冻结井壁 长期监测 |
Monitoring and Analysis on Stressed Status of Mine Freezing Shaft Outer Liner in Deep Thick Overburden |
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| CAI Hai-bing,CHENG Hua,,YAO Zhi-shu,RONG Chuan-xin. Monitoring and Analysis on Stressed Status of Mine Freezing Shaft Outer Liner in Deep Thick Overburden[J]. Coal Science and Technology, 2009, 37(2) |
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| Authors: | CAI Hai-bing CHENG Hua YAO Zhi-shu RONG Chuan-xin |
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| Affiliation: | 1.Anhui University of Science and Technology;Huainan 232001;China;2.Anhui University of Architecture;Hefei 231001;China |
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| Abstract: | According to the technical problems of the mine freezing shaft sinking in deep thick overburden of central ventilation shaft of Xutuan Mine,with the on time monitoring and measurement of the stressed status of the mine freezing shaft liner,the freezing pressure,the reinforced bar stress and the concrete strain of the mine shaft liner were obtained.The monitoring and measurement results showed that the freezing pressure would not be the direct ratio to the freezing depth and the freezing pressure was highly ... |
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| Keywords: | deep thick overburden mine freezing shaft liner long term monitoring and measurement |
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