深立井软岩地层冻结施工关键技术探讨
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摘要
针对深立井软岩地层冻结施工技术,通过对蒙陕甘宁等西部地区多个立井冻结工程的实践总结,从冻结方案选择、冻结技术参数取值、冻结及掘砌施工控制指标等方面对软岩地层冻结关键技术进行了系统阐述,提出了西部软岩地层以白垩系底界为冻结控制层位、利用有限段高塑性体极限状态强度条件公式计算冻结壁厚度的观点,并总结出相对应的冻结法施工技术要点,可为今后类似地层深立井冻结工程施工提供参考。
For the deep shaft soft rock formation freezing technology,we summarize the practice of several vertical shaft freezing projects in the western regions of Inner Mongolia,Shaanxi,Gansu and Ningxia,from the aspects of freezing scheme selection, freezing technical parameter values, freezing and excavation construction control indexes. The key technologies for freezing in soft rock formations are systematically described. The viewpoint that the bottom boundary of the Cretaceous system is used as the freezing control horizon in soft rock formations in the western part of China and the limitstate strength formula for the limited-end high-plasticity body is used to calculate the frozenwall thickness is summarized.Corresponding frozen construction technique points can provide reference for the construction of deep vertical shaft freezing in similar strata.
For the deep shaft soft rock formation freezing technology,we summarize the practice of several vertical shaft freezing projects in the western regions of Inner Mongolia,Shaanxi,Gansu and Ningxia,from the aspects of freezing scheme selection, freezing technical parameter values, freezing and excavation construction control indexes. The key technologies for freezing in soft rock formations are systematically described. The viewpoint that the bottom boundary of the Cretaceous system is used as the freezing control horizon in soft rock formations in the western part of China and the limitstate strength formula for the limited-end high-plasticity body is used to calculate the frozenwall thickness is summarized.Corresponding frozen construction technique points can provide reference for the construction of deep vertical shaft freezing in similar strata.
引文
[1]李功洲,陈章庆.深厚冲积层冻结壁设计计算体系研究与应用[J].煤炭工程,2015,47(1):1-4.
[2]陈文豹,汤志斌.冻结法施工[M].北京:煤炭工业出版社,1993.
[3]程国栋,马巍.国际冻土工程研究进展—第五届冻土工程国际学术讨论会综述[J].冰川冻土,2003,25(3):303-308.
[4]陈瑞杰,陈国栋,李述训,等.人工地层冻结应用研究进展和展望[J].岩土工程学报,2000,22(1):40-44.
[5]沈季良,崔云龙,王介峰.建井工程手册[M].北京:煤炭工业出版社,1986.
[6]李密.深厚软岩冻结壁厚度设计的数值模拟及分析[D].西安:西安科技大学,2010.
[7]刘文民,李功洲.含水基岩冻结壁厚度计算方法探讨[J].煤炭工程,2014,46(S2):6-8,12.
[8]周晓敏,贺震平,纪洪广.高水压下基岩冻结壁设计方法[J].煤炭学报,2011,36(12):2121-2126.
[9]程志彬,张步俊,陈章庆,深厚软岩地层冻结关键技术[J].煤炭科学技术,2017,45(8):98-102,152.
[10]李博融,杨更社,奚家米,等.白垩系井筒冻结壁温度场数值分析研究[J].煤炭工程,2015,47(4):11-14.
[11]张步俊,陈道翀.防止原有井壁冻胀破坏的综合隔热保护法[J].煤炭工程,2014,46(S2):22-24.
[2]陈文豹,汤志斌.冻结法施工[M].北京:煤炭工业出版社,1993.
[3]程国栋,马巍.国际冻土工程研究进展—第五届冻土工程国际学术讨论会综述[J].冰川冻土,2003,25(3):303-308.
[4]陈瑞杰,陈国栋,李述训,等.人工地层冻结应用研究进展和展望[J].岩土工程学报,2000,22(1):40-44.
[5]沈季良,崔云龙,王介峰.建井工程手册[M].北京:煤炭工业出版社,1986.
[6]李密.深厚软岩冻结壁厚度设计的数值模拟及分析[D].西安:西安科技大学,2010.
[7]刘文民,李功洲.含水基岩冻结壁厚度计算方法探讨[J].煤炭工程,2014,46(S2):6-8,12.
[8]周晓敏,贺震平,纪洪广.高水压下基岩冻结壁设计方法[J].煤炭学报,2011,36(12):2121-2126.
[9]程志彬,张步俊,陈章庆,深厚软岩地层冻结关键技术[J].煤炭科学技术,2017,45(8):98-102,152.
[10]李博融,杨更社,奚家米,等.白垩系井筒冻结壁温度场数值分析研究[J].煤炭工程,2015,47(4):11-14.
[11]张步俊,陈道翀.防止原有井壁冻胀破坏的综合隔热保护法[J].煤炭工程,2014,46(S2):22-24.