scholarly journals Analysis of Geotechnical Engineering Safety Technology in Urban Underground Space Construction

2022 ◽  
Vol 6 (1) ◽  
pp. 1-6
Author(s):  
Yun Wan ◽  
Yaoping Luo
Keyword(s):  
Geotechnical Engineering ◽  
Underground Space ◽  
Safety Technology ◽  
Rational Application ◽  
Space Construction

With the accelerating pace of urbanization, the development and application of urban underground space has attracted much attention. In the construction of urban underground space, geotechnical engineering safety is the key point for construction. Based on this, this paper analyzes the application of geotechnical engineering safety technology in urban underground space construction, in hope that this analysis can provide a scientific reference for the rational application of geotechnical engineering safety technology as well as the construction and development of urban underground space.

scholarly journals POSSIBILITY OF UNDERGROUND SPACE CONSTRUCTION BY EXPLOSIVE LOADING IN A BOREHOLE

2004 ◽  
pp. 151-162
Author(s):  
Kazuyoshi TATEYAMA ◽  
Shingo HIRAI ◽  
Takao YANO ◽  
Toshihiro HENMI
Keyword(s):  
Explosive Loading ◽  
Underground Space ◽  
Space Construction

Progress in Research on Explosion Induced Thixotropy of Concrete

2011 ◽  
Vol 675-677 ◽  
pp. 643-646
Author(s):  
Peng Shao ◽  
Yu Yang Liu ◽  
Li Fen Zhou ◽  
Yu Qi Wu
Keyword(s):  
Steel Fibre ◽  
Fresh Concrete ◽  
Sol Gel ◽  
Future Research ◽  
Underground Space ◽  
Steel Fibre Reinforced Concrete ◽  
Space Construction ◽  
Thixotropic Behavior ◽  
General Meaning ◽  
Mechanical Performances

Thixotropy is an important property possessed by fresh concrete of changing from gel to liquid under shearing stress and returning to the original state when at rest. The thixotropic process is usually described to be an isothermal and static (or quasi-static) gel-sol-gel transformation. Now the thixotropy of concrete subjected to explosive loads became a new subject in research of synchronous explosive lining technology, which offers an advanced trechless method for underground space construction in soil. Because the detonation of explosives is a short-duration process accompanying with high temperature and high pressure, thixotropic behavior of concrete is no longer as same as that of in general meaning. This review summarizes the recent progress in research on explosion induced thixotropy of concrete, including the thixotropic behavior, thixoforming, influence of thixotropic process on microstructure, macrostructure and mechanical performances of concrete and steel fibre reinforced concrete. Additional, some arguments and suggestions for the future research are presented.

scholarly journals EXPERIMENTAL STUDY ON UNDERGROUND SPACE CONSTRUCTION BY EXPLOSIVE LOADING OF BLASTING IN A BOREHOLE

2004 ◽  
pp. 175-183
Author(s):  
Kazuyoshi TATEYAMA ◽  
Toshihiro HENMI ◽  
Shingo HIRAI ◽  
Shigeru ITOH ◽  
Shiro NAGANO
Keyword(s):  
Experimental Study ◽  
Explosive Loading ◽  
Underground Space ◽  
Space Construction

Underground space optimization of smart city based on information processing technology

2021 ◽  
pp. 1-7
Author(s):  
Zhiyong Li
Keyword(s):  
Information Processing ◽  
Change Point ◽  
Smart City ◽  
Operation Time ◽  
Intersection Point ◽  
Processing Technology ◽  
Underground Space ◽  
Multi Objective Optimization ◽  
Space Construction ◽  
Slope Change

This study explores the underground space optimization method of smart city based on information processing technology to save space optimization operation time. Taking coordinate of intersection point, radius of intersection point, mileage of vertical slope change point and elevation of slope change point as design variables, taking total cost of underground space construction of smart city as objective function and taking plane, vertical section, horizontal and vertical combination and environmental impact as constraint conditions, a multi-objective optimization mathematical model of underground space of smart city was constructed. Parete genetic algorithm in information processing technology was used to solve the multi-objective optimization mathematical model of the underground space of smart city, realize the automatic search for the optimal scheme of the underground space of smart city, and complete the intelligent optimization process of the underground space construction scheme of smart city. The results show that the method obtained from this study can effectively optimize the underground space of smart city and obtain the optimal subway laying line, save space and optimize operation time and improve the convergence of the method.

Underground Space Construction by Explosive Loading in a Borehole

2007 ◽  
Vol 566 ◽  
pp. 185-190
Author(s):  
Kazuyoshi Tateyama ◽  
Shigeru Itoh ◽  
Hironori Maehara
Keyword(s):  
Laboratory Experiments ◽  
Explosive Loading ◽  
Borehole Wall ◽  
Underground Space ◽  
Explosive Load ◽  
Space Construction

In cases where a borehole has been dug in the ground and subjected to an explosive load, the soil around the borehole wall will be abruptly compressed and a cavity will then be created in the portion of the ground that is surrounded by the compressed soil wall. When this procedure is applied to the construction of tunnels or foundations, underground spaces can be created with minimum mucking and a thinner lining. The authors carried out some laboratory experiments in which small boreholes were expanded by blasting. The results of the experiments increase our knowledge and elevate the possibility of applying this procedure to underground space construction.

scholarly journals Применения бентонитовых матов в качестве гидроизоляционных материалов в строительстве

2021 ◽  
Vol 70 (2) ◽  
pp. 39-42
Author(s):  
Е.Е. Кукарина
Keyword(s):  
Raw Material ◽  
Underground Space ◽  
Shopping Centers ◽  
Rational Use ◽  
Parking Lots ◽  
Large Cities ◽  
Land Prices ◽  
Space Construction ◽  
Long Time ◽  
Main Component

Modern trends in construction in large cities and megacities, lack of available land, rising land prices and the need for its rational use lead to the active development of underground space. Construction of underground garages, Parking lots, shopping centers, pedestrian crossings and transport tunnels requires the use of reliable (waterproof) and durable waterproofing Bentonite slabs are widely used in construction, for example, in waterproofing. The material has been in use for a long time, because its main component is clay. One of the famous and already outdated varieties of material is found under the name "clay castle". It is a compacted paremata in plate raw material, whose thickness was 30-40 cm Today, technology has leaped forward, incorporating the best of old techniques and modern developments. So there were bentonite mats, which will be discussed further.

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