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- Based on the test results, the design method of vertical bearing capacity of the retractable drilling shaft lining was obtained. 由此提出了可缩性钻井井壁竖向承载力的设计方法。
- Huainan Banji coal mine introduces precasting in Main Shaft and ventilation shaft,and drilling shaft lining is precast construction in ground. 淮南板集煤矿主井与风井采用钻井法凿井,钻井井壁在地面预制施工。
- Aiming at the fractured mechanism of mine shaft lining under the condition of stratum subsiding, a new type of retractable drilling shaft lining structure was proposed. 针对地层沉降条件下煤矿立井井壁的破坏机理,提出了一种新型可缩性钻井井壁结构。
- Keywords deep alluvium;drilling shaft lining;vertical stability;critical height;finite element method; 深厚表土层;钻井井壁;竖向稳定;临界深度;有限元;
- drilling shaft lining 钻井井壁
- Fit and inspect shaft line of M/E. 4主机轴系安装报验合格。
- All its assets is over 3 millon Yuan,RZ series of soft-rock drilling shaft are patent production of Ministry of Coal. 生产的RZ系列软岩钻杆是国家煤炭部通过技术鉴定的专利产品。
- Fracture accidents of vertical shaft lining in aquifer are introduced. 研究了表土段立井井壁的破裂情况；
- Aiming at the deep alluvium support of coal shaft, the composite shaft lining of high strength concrete and double steel cylinders is presented. 针对煤矿立井井筒深厚表土层的支护,提出了采用双层钢板高强混凝土复合井壁结构。
- The upper shaft lining of No.1 blast furnace for smelting high TiO2 bearing vanadic titanomagnetite is repaired by forcing and gunning methods. 对冶炼高钛型钒钛磁铁矿的一号高炉炉身上部进行了压入和喷补造衬。
- The shear character in the interface between soil and structure in high stress is one of key research in shaft lining fracture theory. 高应力下土与结构接触面剪切特性的研究是当前井壁破裂理论研究的关键之一,本文对高应力作用下的实验仪器和实验过程做了简要的介绍。
- The fuzzy integrative evaluation theory is used to set up the fuzzy integrative evaluation method of shaft lining under complicated loads in thick alluvium. 在此基础上,利用模糊评价理论,建立了深表土复杂条件下的井壁可靠性模糊评价方法。
- According to calculations, it was necessary to adopt a new type of structure of the shaft lining with vertically yieldable segments for reason of safety. 分析计算表明：应采用竖向可缩新型井壁结构防止井壁因冲积层疏排水而破坏。
- Combine the numeric calculation medal of concrete hydration heat,using ADINA finite element program ,numerically simulates the temperature field of frozen wall and shaft lining. 结合混凝土水化热情况下冻结壁井壁温度场数值计算模型的建立方法,运用有限元软件ADINA建立数值模型,进行冻结壁温度场计算,得出冻结壁温度场分布特性。
- Shaft is the throat of mine for a long time,the concrete strength and anti-seep-age of shaft lining as well as the quality of the lining linkage are not ideal. 立井是矿井的咽喉，但立井的砼井壁的强度及抗渗性以及接茬处的质量长期以来不尽人意，是井巷工程中急待解决的问题。
- An experimental study of mechanical characteristics of drilled shaft was carried out by resemble material. 用相似材料对钻井井壁底的力学特性进行了实验研究。
- The drilling troops mustered on the hill. 演习部队在小山上集合起来了。
- The simulation tests were carried out to study the variation of the vertical additional force acted on shaft lining by surrounding soils during dewatering of alluvium by means of multi-function rig in vertical shaft. 摘要利用大型竖井模拟试验台，对冲积层疏排水过程中立井井壁受到的竖直附加力的变化规律开展了模拟试验研究。
- A shaft on which a working tool is mounted, as in a dental drill. 心轴用于安装工具的蕊棒，如牙钻蕊棒
- The factors that affect the reliability of shaft lining in thick alluvium are analyzed; and the main factors used for evaluating the reliability are quantitated; the index system is set up too. 分析了影响深表土立井井壁可靠性的因素,并对主要因素进行合理量化,建立了指标体系。
