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李阳,赵兵杰.河北宁晋草厂盐矿覆岩稳定性分析与评价[J].河北工程大学自然版,2018,35(4):79-83
河北宁晋草厂盐矿覆岩稳定性分析与评价
Overlying strata stability analysis and evaluation of Caochang salt mine in Ningjin, Hebei
投稿时间:2018-06-15  
DOI:10.3969/j.issn.1673-9469.2018.04.017
中文关键词:  宁晋草厂盐矿  覆岩稳定性  临界水平应力  分析与评价
英文关键词:Caochang salt mine  overlying strata stability  critical horizontal stress  analysis and evaluation
基金项目:博士专项基金资助项目(17129033018)
作者单位
李阳 河北工程大学 地球科学与工程学院, 河北 邯郸 056038 
赵兵杰 河北工程大学 地球科学与工程学院, 河北 邯郸 056038 
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中文摘要:
      针对冀中平原宁晋一带采空区极易导致地表过度沉降、塌陷,土地盐碱化等地质灾害及环境安全问题,依据矩形板理论和弹性圆板理论对草厂盐矿上覆盖层稳定性进行了分析,得出溶腔覆岩在矩形板梁理论和无孔弹性圆板理论下的临界水平应力为4.90×108 kN和6.89×108 kN,并分析了两种模型下草厂盐矿上覆盖层的稳定可靠性。
英文摘要:
      There are abundant halite resources with reserves about 100 billion tons in the strata of Paleogene System at Shahejie Formation in Ningjin area of Jizhong plain. However,the mined-out areas formed by solution mining of halite deposits may easily lead to geological disasters and environmental problems such as excessive surface subsidence,collapse,land salinization and so forth. So,how to effectively predict and control roof fall of salt cavities has become the most pressing problem. Based on the rectangular plate theory and the non-porous elastic circular plate theory,the stability of the overlying strata in Ningjin Halite Mine is analyzed. The results show that the critical horizontal stresses of the overlying strata of cavity are and under the two theories,respectively. The stability and reliability of the overlying strata in Ningjin Halite Mine under the above two models are also analyzed.
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