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List of products by author: W. Qiu
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A Case Study on Construction Technology of Large Section Horseshoe-Shaped EPB-TBM Tunnel
Abstract: Previously, mining method is usually used to construct mountain tunnel in loess strata, and shield method has no precedent. Baicheng tunnel of Menghua railway is a mountain tunnel located in loess area. Through contrastive analysis, the proposal of using a large section horseshoe-shaped EPB-TBM with multi-cutterhead to construct Baicheng tunnel was adopted. Afterwards, the TBM was developed by...
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A combined initial support system of high in -situ stress and soft rock tunnel
Abstract: After excavation, the surrounding rock of the high in-situ stress and soft rock tunnel will produce large deformation, resulting in the yield, crack, and even collapse of the initial support. This study was guided by the flexible support concept based on the energy principle, proposed a combined initial support system suitable for high in-situ stress and soft rock tunnel. The combined initial...
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A new drilling pattern of contour blastholes for overbreak control
Abstract: The problems of overbreak and underbreak exist widely in drilling and blasting tunnels. The traditional contour blastholes (TCB) pattern has disadvantages in controlling overbreak and underbreak due to the impact of the initial support. For example, it generally increases the look-out angle and causes the overbreak. However, its effect is rarely mentioned in previously published studies. Based...
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Evaluation of Structural Performance and Optimizing Design for Lattice Girders Reinforced Shotcrete
Abstract: Lattice girders have been widely used as a temporary support or part of the permanent lining for NATM tunneling. In order to evaluate the structural performance of lattice girders reinforced shotcrete, influential factors such as diameter of main steel bar and diagonal bar, welding length, stirrup were studied. Moreover, interaction between rock and lattice girders reinforced shotcrete was also...
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Optimal anti-floating design of underground parking garage in Yitian town, Shenzhen
Abstract: According to the latest data released by International Energy Agency, China has overtook the US as the world’s largest energy consumer. In 2010, the GDP of China amounts to 9.27 percent of the total world. The percentages of main natural resources consumed by China are: iron ore 43%, copper 25%, coal 43.4%, steel 47.7%, aluminium 32%, cement more than 53%, crude oil 9.7%. According to the...
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Research Situation Analysis of Operation Tunnel Lining Surface Diseases
Abstract: During tunnel operation, diseases will take place, such as dropping lining blocks, cracks, inanition behind lining, material deterioration, reinforcing steel rusting, among which, dropping lining blocks and cracks will be shown on the surface of tunnel lining. According to the vision characters of tunnel lining diseases, many researchers have...
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Research and Application of BIM in Mountain Tunnel by Shielded TBM
Abstract: BIM has been widely adopted in the architectural industry, and the use of BIM in tunnel engineering is still at its initial stage. Previous BIM-based software almost only caters to the design of the architecture industry and is not in accord with tunnel engineering standards. The paper highlights the high precision modeling method of horseshoe-shaped segments and the slanting cut tunnel portal...
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Study on construction period and cost management in long drill and blast railway tunnel
Abstract: Based on division of tunnel construction procedures, through extensive investigation, site survey and expert interview, distribution characteristics of time and cost of each constructing activity is obtained. By using Monte Carlo method, relationship between time and cost of tunnel construction can be acquired. An original software is programed based on web platform to calculate the...
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Study on the Visual Scheme of Tunnel Detection Data Based on Web
Abstract: Till the year of 2013, Chinese railways tunnel mileages had exceeded 100000 km. Detection data and maintenance cost will increase greatly along with tunnels age increase during the operation period, which cannot be ignored. In the past, detection data of tunnels railway administration was managed by themselves based on office software, for example, detection conclusions are recorded in Word and...
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Water pressure free design for an infrastructure of parking
Abstract: Depending on the central square underground parking of Yitian town in the Shenzhen of Guangdong province in China and for the harmonious development idea, the practical problems and solved method have been introduced during the design and construction process considered environment, engineering safety and economic benefit, etc. The underground parking has two layers which are located above the...
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