赵固二矿西风井深厚冲积层冻结方案设计研究与应用  

Research and Application on Freezing Schematic Design of Deep Alluvium in West Ventilating Shaft of Zhaogu No. 2 Coal Mine

作　　者：陈道翀 李功洲 曾凡伟 CHEN Dao-chong;LI Gong-zhou;ZENG Fan-wei(School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Beijing MKL Institute of Applied Technology,Beijing 100013,China;Beijing China Coal Mine Engineering Co.,Ltd.,Beijing 100013,China;Henan Guolong Mining Construction Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]北京煤科联应用技术研究所,北京100013 [3]北京中煤矿山工程有限公司,北京100013 [4]河南国龙矿业建设有限公司,河南郑州450000

出　　处：《煤炭工程》2019年第12期13-18,共6页Coal Engineering

摘　　要：针对赵固二矿西风井冲积层深度超过700m,国内外类似立井施工经验少,冻结设计指导原则不统一的难题,通过分析总结已施工的深厚冲积层冻结井筒在施工过程中存在的问题,选择强化深厚冲积层冻结壁外侧冻结强度的冻结设计指导原则,采用以外圈为主冻结孔和按冻结孔功能分类布置的布孔方式,结合冻结壁形成特性综合分析方法对设计方案实施效果进行预测和优化,设计了赵固二矿西风井的冻结方案,并提出了井帮温度调控目标曲线。在冻结与掘砌相互配合所创造的良好施工条件下,该井冲积层段外壁掘砌平均速度达到87.1m/月。Aiming at the problems when the depth of alluvium in the West Ventilating Shaft of Zhaogu No.2 Coal Mine exceeds 700m,there is little construction experience of similar vertical shaft in China and abroad,and the guiding principle of freezing design is not unified,through analysis and summary of the problems in the construction of frozen shaft in deep alluvium,the guiding principle of freezing design is chosen to strengthen the freezing strength of the outer side of freezing wall in deep alluvium.The freezing scheme of the West Ventilating Shaft of Zhaogu No.2 Coal Mine is designed arranging the main freezing holes outside and classifying the freezing holes according to their functions,combining with the comprehensive analysis method of freezing wall formation characteristics,and the target curve of temperature control of the shaft lining is put forward.Under the good construction conditions created by the combination of freezing and excavation,the average excavation speed of the outer wall of the alluvium section of the shaft reaches 87.1m/month.

关 键 词：冻结孔布置 优化设计 调控目标 冻掘配合 

分 类 号：TD265.3[矿业工程—矿井建设]