冻结深立井快速施工关键技术
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摘要
新庄煤矿回风立井涌水量大,冻结深度为910 m,钻孔深度深,基岩厚度大,整体施工难度较大。根据该工程实际情况,结合掘砌段高及相关经验确定了冻结壁厚等工程相关参数,介绍了造孔纠偏、冻结交圈施工过程中的关键技术措施。合理的选择了掘砌施工中配套的机械化设备,并简要说明了冻结基岩段的爆破控制技术。实践表明,通过冻结—掘砌过程中各项关键技术的有效控制,有效保证了新庄回风立井井筒的安全快速施工。
Xinzhuang Coal Mine has large water inflow from return air vertical wells, freezing depth of 910 m, deep drilling depth,and large bedrock thickness, and the overall construction is difficult. According to the actual situation of the project, the engineering parameters such as freezing wall thickness are determined based on the height of the excavation section and the relevant experience, and the key technical measures in the course of the construction of pore correction and freezing ring are introduced. The mechanized equipment used in excavation and masonry construction is reasonably selected, and the blasting control technology of frozen bedrock section is briefly described. The practice shows that the safe and rapid construction of Xinzhuang return air shaft can be guaranteed by effective control of key technologies in the process of freezing and excavation.
Xinzhuang Coal Mine has large water inflow from return air vertical wells, freezing depth of 910 m, deep drilling depth,and large bedrock thickness, and the overall construction is difficult. According to the actual situation of the project, the engineering parameters such as freezing wall thickness are determined based on the height of the excavation section and the relevant experience, and the key technical measures in the course of the construction of pore correction and freezing ring are introduced. The mechanized equipment used in excavation and masonry construction is reasonably selected, and the blasting control technology of frozen bedrock section is briefly described. The practice shows that the safe and rapid construction of Xinzhuang return air shaft can be guaranteed by effective control of key technologies in the process of freezing and excavation.
引文
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[11]万援朝.大直径深立井井筒基岩段快速施工技术[J].煤炭科学技术,2010,38(12):43-46.
[12]张驰,杨维好,杨志江,等.深厚含水基岩区立井外壁冻结压力的实测与分析[J].煤炭学报,2012,37(1):33-38.
[13]江军.立井井筒深厚冻结表土段快速施工实践[J].建井技术,2008,29(6):8-9.
[14]崔广心.深厚表土中圆筒形冻结壁和井壁的力学分析[J].煤炭科学技术,2008,36(10):17-21.
[15]耿增达,赵曦.冻结立井施工井筒破坏原因及对策研究[J].能源与节能,2018,22(3):47-49.
[2]张文.我国冻结法凿井技术的现状与成就[J].建井技术,2012,33(3):4-13.
[3]李忠森,付祥昆,车发明.立井大断面全深冻结快速施工技术研究与应用[J].能源技术与管理,2013,38(5):135-137.
[4]薛毅宏.副立井井筒冻结设计方案及施工技术[J].煤炭工程,2014,46(3):29-31.
[5]臧培刚,王伟,马宏强,等.超深厚冲积层冻结井筒施工关键技术研究[J].煤炭科学技术,2017,45(8):90.
[6]程志彬,张步俊,徐辉东,等.深立井软岩地层冻结施工关键技术探讨[J].煤炭工程,2018,50(6):51-53.
[7]马芹永,王长柏,徐辉东,等.立井人工冻结巨厚砾岩层爆破快速掘进技术[J].煤炭科学技术,2006,34(8):1-3.
[8]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.
[9]陈新年,奚家米,张琨.井筒超深冻结孔封孔缓凝水泥浆性能研究[J].煤炭科学技术,2015,43(3):6-9.
[10]黄跃东,徐福林.大直径深立井井筒基岩段快速施工技术[J].煤炭技术,2006,25(9):107-108.
[11]万援朝.大直径深立井井筒基岩段快速施工技术[J].煤炭科学技术,2010,38(12):43-46.
[12]张驰,杨维好,杨志江,等.深厚含水基岩区立井外壁冻结压力的实测与分析[J].煤炭学报,2012,37(1):33-38.
[13]江军.立井井筒深厚冻结表土段快速施工实践[J].建井技术,2008,29(6):8-9.
[14]崔广心.深厚表土中圆筒形冻结壁和井壁的力学分析[J].煤炭科学技术,2008,36(10):17-21.
[15]耿增达,赵曦.冻结立井施工井筒破坏原因及对策研究[J].能源与节能,2018,22(3):47-49.
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