2020 Vol. 34, No. 4

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Technology Development and Exploration
An Improved Expression of Safety Factor for Soil Slope
Lei Shengyou, Hui Huiqing, Chen Lianguo
2020, 34(4): 187-190. doi: 10.3969/j.issn.1007-2993.2020.04.001
[Abstract](134) [PDF 829KB](21)
Abstract:
Based on the shear strength of cohesive soil, the shear strength expression of soil divided by the safety factor is incontradiction with the Coulomb criterion. Only the frictional resistance of the shear strength expression is reduced in the improved expression, thus constructing a new strength redu...
Soil Pressure Measuring Pipe Based on BOTDR
Li Chao, Xiao Jingze, Liu Yu, He Jing, Zhou Yuanxin
2020, 34(4): 191-195. doi: 10.3969/j.issn.1007-2993.2020.04.002
[Abstract](136) [PDF 1605KB](14)
Abstract:
At present, the vibrating wire soil pressure gauge and the resistance-type soil pressure gauge are widely used. However, there are some disadvantages, such as high cost, poor anti electromagnetic interference and low survival rate of the instrument. Moreover, the test data are easy to be distorted a...
Geological Disaster Model of Loess Collapse in Ji County, Shanxi Province
Li Yuzhu, Li Jie
2020, 34(4): 196-200. doi: 10.3969/j.issn.1007-2993.2020.04.003
[Abstract](84) [PDF 1674KB](20)
Abstract:
Loess collapse is the main geological disaster in Ji County, Shanxi Province. Collapse is a process of partially creep—mostly progressive failure—abrupt instability.Based on the analysis of the main controlling factors of the loess collapse, 6 collapse models are summarized, including saturated slop...
Treatment Measures of Metro Shield Tunnel in Red Clay Karst Area
Zhang Meicong
2020, 34(4): 201-205. doi: 10.3969/j.issn.1007-2993.2020.04.004
[Abstract](125) [PDF 10377KB](17)
Abstract:
Soft plastic red clay covers the limestone. The change of surrounding environment easily leads to the connection and flow between red clay and karst cave, which could result in karst geological disasters such as ground subsidence, and brings serious safety risks to the construction and operation of ...
Study on Survey Technology of Large-scale Pit Filling in Road Engineering
Cheng Hailu, Han Zekun, Wang Tao, Lu Pengyu
2020, 34(4): 206-210,224. doi: 10.3969/j.issn.1007-2993.2020.04.005
[Abstract](80) [PDF 4265KB](24)
Abstract:
Taking the road engineering of Meishikou Road as an example, the large-scale earth filling pits were classified according to the composition and scale of the earth filling, and the types of soil filling were classified according to their origin and composition. Meanwhile, domestic garbage was divide...
Robust Design Approach of Gravity Retaining Wall Based on Info-Gap Theory
Cui Yajun, Wang Fajun, He Peng, Zheng Chengcheng, Wang Fengju
2020, 34(4): 211-216. doi: 10.3969/j.issn.1007-2993.2020.04.006
[Abstract](77) [PDF 1207KB](12)
Abstract:
Due to the variability of geomechanical parameters and the limit of the obtained data information, the existing uncertainty analysis method for the stability of gravity retaining wall is difficult to reflect the true safety performance and failure level. The Information-Gap theory (Info-Gap) is intr...
Monitoring and Tracking Analysis of Underwater Topography in Yangshan Deepwater Port
Zhou Mi
2020, 34(4): 217-221. doi: 10.3969/j.issn.1007-2993.2020.04.007
[Abstract](125) [PDF 1902KB](13)
Abstract:
In order to measure the depth of water and ensure the safety of navigation, dual-frequency GNSS receiver with dual-frequency depth sounder were used. GNSS RTK technology and navigation sounding software are used to collect plane and depth data. Underwater topographic monitoring and tracking analysis...
Browser Development for Information Entry of Ancient Tree Based on ObjectARX
Chen Zhen, Yin Yanyun, Ma Hongyu, Li Shifeng, Du Wenxiao
2020, 34(4): 222-224. doi: 10.3969/j.issn.1007-2993.2020.04.008
[Abstract](70) [PDF 770KB](11)
Abstract:
The advantages and disadvantages of several secondary development methods of AutoCAD platform are compared, and ObjectARX 2018 based on C ++ language is selected to realize the input and browse of attribute informations for ancient trees in AutoCAD 2018. The attribute informations of ancient trees c...
Cause Analysis and Treatment Measures of Abnormal Bearing Capacity of Pile Foundation in a Project
Peng Manhua, Chen Zhixin, Zhang Haishun
2020, 34(4): 225-228,233. doi: 10.3969/j.issn.1007-2993.2020.04.009
[Abstract](80) [PDF 1070KB](36)
Abstract:
Two pile bearing capacity tests have been carried out in a project, but the bearing capacity of test piles does not meet the design requirements. The geological factors and construction factors are analyzed, and the corresponding treatment measures are provided considering the aspects of constructio...
Application and Prospect of Integrative Geophysical Exploration in Urban Water Engineering
Gu Xiaoshuang
2020, 34(4): 229-233. doi: 10.3969/j.issn.1007-2993.2020.04.010
[Abstract](72) [PDF 13193KB](21)
Abstract:
With the continuous progress of science and technology and the advent of the age of intelligence, the proportion of urban water engineering planning and construction is increasing. Focusing on the water conservancy project under the complex urban environment, the integrative geophysical method is us...
Design and Implementation of Digital Management System for Historic Building Protection Based on SuperMap
Li Shifeng, Yin Yanyun, Du Wenxiao, Chen Zhen, Shao Pan
2020, 34(4): 234-237. doi: 10.3969/j.issn.1007-2993.2020.04.011
[Abstract](143) [PDF 1678KB](20)
Abstract:
The digitization of historic buildings has become an important development direction of cultural relics protection and has placed an urgent need on the construction of management system for historic buildings protection. According to the actual needs of historic buildings protection management, comb...
Experimental Research
Experimental Study on Leaching of SP-MOC Solidified Arsenic-contaminated Soil
Zhang Qinxi, Zhang Xuedong, Zhang Zhihong, Jiang Yuxiao
2020, 34(4): 238-242. doi: 10.3969/j.issn.1007-2993.2020.04.012
[Abstract](107) [PDF 1302KB](12)
Abstract:
To determine the optimum ratio of arsenic-contaminated soil with different concentrations, SP-MOC curing of arsenic-contaminated soil and toxicity leaching test are carried out in the relocation of a chemical plant in Jiangsu Province. The change law of moisture content, pH value and leaching concen...
Experimental Study on Bearing Characteristics of Post Grouting for Underwater Cast-in-pace Bored Piles
Liu Huancun, Sun Fengling, Liu Tao
2020, 34(4): 243-249. doi: 10.3969/j.issn.1007-2993.2020.04.013
[Abstract](110) [PDF 2043KB](28)
Abstract:
The experiment of post grouting for underwater cast-in-pace bored piles has been constructed based on a large industrial construction project located in the East and West Lake area in Wuhan. Underwater cast-in-pace bored piles is adopted in the foundation design. For different pile diameters, differ...

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