2011 Vol. 25, No. 6

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Development and Creation
Characteristis Values of Tip Resistance on the Rock for the Weak Underlying Stratum
Luo Zhaohua
2011, 25(6): 271-277. doi: 10.3969/j.issn.1007-2993.2011.06.001
[Abstract](71) [PDF 468KB](12)
Abstract:
From the point of punching damage mode of rock tensile strength, a mathematic model of punching safety indices and punching tip resistance value coefficient was established based on the analysis of rock characteristics and rock mechanical strength. Stretch and compression strength, punching safety i...
Experimental Study of Water Content Influence on Shear Strength of Unsaturated Soil
Wang Xingxing, Hou Kepeng, Ma Kaichuan
2011, 25(6): 278-280,285. doi: 10.3969/j.issn.1007-2993.2011.06.002
[Abstract](129) [PDF 713KB](12)
Abstract:
The research on shear strength of unsaturated soil is important in soil mechanics research. The shear strength of soil depends on the difference of water content. Based on the object of remolded soil in Yunnan province and the means of the direct-shear tests, the author surveyed the shear strength p...
Monitoring and Analysis of Deep Excavation of Subway in Complicated Environment
Yang Huawei, Li Liang
2011, 25(6): 281-285. doi: 10.3969/j.issn.1007-2993.2011.06.003
[Abstract](61) [PDF 931KB](12)
Abstract:
Because of the complexity of ambience, in the construction of city subway, foundation pit excavation can cause disturbance to the soil, and bring damage to the building and underground pipe, even the stability of foundation pit can be lost. Based on the project of Shenzhen metro,introduced the desig...
Tunnel Construction Water Inflow Predicted by Precipitation Infiltration Method
Huang Zhonghuan, Wang Ling
2011, 25(6): 286-288. doi: 10.3969/j.issn.1007-2993.2011.06.004
[Abstract](82) [PDF 195KB](6)
Abstract:
Water inflow is generally obtained form well pumping test.But in geological survey and route selection,the precipitation infiltration method is used in the prediction the wate inflow of the construction of the tunnel because of the site condition and the cost constraints.
Characteristics and Monitoring Methods of Ground Subsidence in the Gob Area of Beijing West Mountain Areas
Huang Laiyuan
2011, 25(6): 289-294. doi: 10.3969/j.issn.1007-2993.2011.06.005
[Abstract](68) [PDF 1049KB](13)
Abstract:
The gob area of Beijing are mainly located in the Beijing west mountain areas, resulting in ground subsidence, surface deformation,causing further damage to the ground buildings, roads, railways, pipelines and other linear projects distorted,damaged farmland, forest damage, and even casualties, etc....
Softsoil Subgrade Settlement Curve Fitting by L-G Superposition Curve Model
Zhao Fengqi, Zhang Xiong, Wang Weisheng
2011, 25(6): 295-299. doi: 10.3969/j.issn.1007-2993.2011.06.006
[Abstract](98) [PDF 301KB](6)
Abstract:
To improve the fitting accuracy of Soft soil-Settlement model,by the analysis of measured data,studied the soft soil subgrade settlement development rule.The Logistic forecasting model and Gompertz forecasting model were superimposed on the basis of predecessor's research,and the L-G superposition c...
Technology Development and Exploration
Analysis on Deformation of Retaining Structures of Over-excavation in Foundation Pit
Xie Xiudong, Wang Yan
2011, 25(6): 300-303. doi: 10.3969/j.issn.1007-2993.2011.06.007
[Abstract](80) [PDF 495KB](9)
Abstract:
During the excavation of foundation pit in rheological soil layer,the phenomena of over-excavation and support setting not timely occur frequently,and the characteristics of soft-soil creep,the deformation of retaining structures is increase sharply. With the secondary development program of the ela...
Analysis of the Impact of Distance From Explosive Source on Blasting Vibration Signal Spectrum
Bi Weiguo, Tian Gang, Yan Yongfeng
2011, 25(6): 304-306. doi: 10.3969/j.issn.1007-2993.2011.06.008
[Abstract](86) [PDF 203KB](6)
Abstract:
Combined with a Tunnel Engineering in Linyi City,the spectrum changing situation of vibration signal at different distances from explosive source was analyzed through the analysis software MATLAB. It can be obtained that,in the medium and near-field of blasting source,the vertical component of the d...
Numerical Simulation of High Filled Embankment on Slope Soft Foundation
Liu Xiujun
2011, 25(6): 307-311. doi: 10.3969/j.issn.1007-2993.2011.06.009
[Abstract](94) [PDF 946KB](7)
Abstract:
This paper building a high filled embankment FLAC3D model by GOCAD, which embankment is on slope soft-soil foundation of Chen-Ning highway in Hunan Province. The FLAC3D program was been adopted to simulating and analyses the embankment's deformation and stability under its own weight when layered fi...
Displacement Monitoring Methods in Geotechnical Engineering and Accuracy Analysis
Qin Yue, Wu Jie
2011, 25(6): 312-315. doi: 10.3969/j.issn.1007-2993.2011.06.010
[Abstract](47) [PDF 237KB](6)
Abstract:
In the geotechnical engineering displacement monitoring, the choice of methods in monitoring depends on the condition monitoring. This paper used in the small Angle measurement method, angular intersection method, distance intersecting method, Total synthesis methods are studied. At present various ...
Design and Construction of Burity Ultimo Pits in Luanda
Zhang Wu, Liu Shaowen, Bian Wenfei
2011, 25(6): 316-320. doi: 10.3969/j.issn.1007-2993.2011.06.011
[Abstract](49) [PDF 946KB](8)
Abstract:
It's described that the design concept and construction process of a building pit which sites in Luanda,the capital of Angolan. The example shows that structure surface area and building site area ratio 92.5% by the combination of nail and anchor supporting structure. Utilizing the feature of the pi...
The Application of the Steel Pipe Braces & High-pressure Jet in the Processing Hole Excavated for Building Foundation Dangerous Situation
Dong Junzhao
2011, 25(6): 321-324. doi: 10.3969/j.issn.1007-2993.2011.06.012
[Abstract](45) [PDF 659KB](16)
Abstract:
Some underground garage deep hole excavated for building foundation project in Suzhou, ground situation for Suzhou typical soil layer, the biggest cutting depth is 5.25m with the drill hole filling pile supports and protections watering soil to stop the water curtain to carry on the supports and pro...

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