内层钢板高强钢筋混凝土复合井壁在冻结井筒应用研究  

Research and application of composite shaft with inner steel plate and high strength reinforced concrete in frozen wellbore

作　　者：姚直书[1,2] 薛维培 程桦[1,2] 居宪博[3] 秦勇[4] YAO Zhishu;XUE Weipei;CHENG Hua;JU Xianbo;QIN Yong(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan,Anhui 232001,China;Research Center of Mine Underground Engineering of Ministry of Education,Anhui University of Science and Technology,Huainan,Anhui 232001,China;Office of the Chief Engineer,State Development ＆ Investment Corporation Xinji Energy Company Limited,Huainan,Anhui 232001,China;Mine Station,Hefei Design ＆ Research Institute of Coal Industry,Hefei,Anhui 230041,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]安徽理工大学矿山地下工程教育部工程研究中心,安徽淮南232001 [3]国投新集能源股份有限公司总工办,安徽淮南232001 [4]煤炭工业合肥设计研究院矿井所,安徽合肥230041

出　　处：《采矿与安全工程学报》2018年第4期663-669,共7页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51674006);安徽省高校学科(专业)拔尖人才学术项目(gxbjZD09);安徽省高等学校自然科学研究重点项目(KJ2018A0098);安徽理工大学青年教师科学研究基金重点项目(QN2017211);矿山地下工程教育部工程研究中心开放研究项目(2017KF06)

摘　　要：针对板集主井井壁修复工程,提出采用内套内层钢板高强钢筋混凝土复合井壁。对该种井壁受力机理进行分析,井壁内缘混凝土由于受到钢板筒的约束而处于三向受压应力状态,抗压强度明显增加,而该种井壁的现行设计计算方法并没有考虑到这一点。为此,根据我国现行混凝土结构设计规范中有关内容,给出内层钢板钢筋混凝土复合井壁设计计算完善方法。模型试验证明,采用完善方法设计的内层钢板高强钢筋混凝土复合井壁结构,其混凝土抗压强度提高了1.838~1.859倍。板集主井工程应用现场实测表明,井壁结构中混凝土环向应变值为-392με,说明采用完善方法设计的井壁结构安全可靠。Aiming at the main shaft lining repair engineering in Banji, inner sleeve lining steel plate high-strength concrete composite shaft lining is forward. Firstly, the forced mechanism of shaft lining, inner edge concrete of shaft lining due to the restraint of steel tube in three-way compressive stress state is analyzed. The compressive strength dramatic increased. However, the current design calculation method did not consider this. Therefore, according to the current method for design of concrete structure related content, the inner sleeve lining steel plate high-strength concrete composite shaft lining design and calculation complete method are given. Then, the model testing shows that the compressive strength of concrete increased 1.838-1.859 times using the complete method to design the inner steel high-strength concrete composite shaft lining structure, Finally, application of Banji main shaft lining engineering and measurement show that the concrete in shaft lining structure hoop stress value is-392 με, which indicates that the method to design the shaft lining structure is safety and reliability.

关 键 词：井筒修复 冻结法 内层井壁 内层钢板 高强混凝土 

分 类 号：TD262[矿业工程—矿井建设]