1997 Vol. 11, No. 1

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You Daxin, Cui Guoliang
1997, 11(1): 3-7.
[Abstract](26) [PDF 581KB](3)
Abstract:
The Application in the Soft Soil Ground of the Composite Foundation of Sand -stone Pile and Concrete Pile with Low Strength
Wang Buyun, Zhao Xiuqin
1997, 11(1): 8-14.
[Abstract](26) [PDF 435KB](7)
Abstract:
This paper introduces the test results and calculative method by using the composite foundation of sand-stone pile and concrete pile with low strength. This composite foundation can develop the properties of two kinds rigidity stabilized body. It has obvious economical and technical benefit and good applicable results.
New Progress of Geotechnique in Ningbo City
Shen Changlu, Kong Qinghua, Gui Songli
1997, 11(1): 15-18.
[Abstract](28) [PDF 372KB](3)
Abstract:
During the city construction in recent years, dealing with the thick marinedeposit soft soil ground becomes outstanding problem. This paper introduces the typical cases of dealing with suft soil ground in Ningbo city based on the auother's practice.
Studies on the Tests of the Deformation Properties of Compacted Soil-cement
Liu Huancun
1997, 11(1): 19-24,7.
[Abstract](18) [PDF 416KB](3)
Abstract:
Through the triaxial test tesults of 170 compacted soil-cement samples in laboratory,this paper further analyses the deformation properties of compacted soil-cement based on the studies on the strength properties introduced in reference 1. Reveals the relation between the strain εu corresponding to tne ultimate strength qu,the ultimate deformative modulus Eu, the strain ε0.5 corresponding to the stress of 0.5qu and mean deformative modulus E0. Analyses tlie effect of surrounding pressure to above telations. Proposed tke constitutional equation of stress-strain of compacted soil -cement.
Study on the Load Transfer Mechanism of Super-long Pile
Yang Jibao
1997, 11(1): 25-29.
[Abstract](25) [PDF 328KB](3)
Abstract:
This paper introduces the load transfer function revised by author based un the analysis of measured data from super-long pile static load test. And proves that this function can teflect the load transfer mechanism of super-long pile by practical cases.
The Basic Primciples of Self-bearing Protect of Foundation Soil
Huang Yunfei
1997, 11(1): 30-34.
[Abstract](24) [PDF 399KB](4)
Abstract:
This paper proposes the protect-displacement curve of foundation soil based on the covergence constraint curle of the surrounding rock in underground engineering and the modern protect theory. This protect system dose not take soil as only load to protect structure, but take soil and structure as an organic whole. The aim of protect is not to'prop' the unstable soil, but to fully develop the self-bearing capacity of soil.
Lateral Pressure Calculation of Underground Structure with Local Surcharge
Wang Guangyue
1997, 11(1): 35-40.
[Abstract](24) [PDF 285KB](4)
Abstract:
This paper deduces the formulation for calculating lateral pressure with local surcharge based on the solution of Boussinesq. And gives the calculative parameters table. It is simple and easy to calculate the lateral pressure using the given formula and table.
Discussions About the Slope Stability of Deep Foundation Pit in Changchun City
Zhou Zhou, Ma Ping
1997, 11(1): 41-44.
[Abstract](30) [PDF 340KB](4)
Abstract:
This paper proposes some views about the slope stability of deep foundation pit through the analyses to the 10 excavation engineerings in Changchun city.
The Origin Study and Space-time Simulation on Groundwater Pollution in Boshan District of Zibo City
Zhou Nianqing, Zhu Xueyu
1997, 11(1): 45-50,44.
[Abstract](47) [PDF 467KB](4)
Abstract:
This paper studies the main pollution sources to the groundwater of fracture-karst in Middle Odovician carbonaterockes, which is the unique sources for the urban water supply,and the main contaminants in groundwater, its characteristics of space-distribution, estimates groundwater quality by fuzzy mathematic method. Trend surface analysis and Kriging method in Geostatistical methods are taken to simulate contaminants distribution in space, grey system method and characteristic finite element solution of advantages and disadvantages of these methods are compared. Finally some proposal for protection of ground water environment in Boshan are suggested.
Optimum Estimation for Groundwater Table by Kalman Filtering Combinated with Finite Element Method
Shi Ruiqing
1997, 11(1): 51-53.
[Abstract](23) [PDF 243KB](3)
Abstract:
This paper discusses the basic. principle of optimum estimate for groundwater table using Kalman filtering combinated with finite element method. And expounds the advantages of this method by engineering cases.
Test Method the Stability of Initiation Point in Control Net
Liu Shunxi
1997, 11(1): 54-56,40.
[Abstract](26) [PDF 235KB](4)
Abstract:
The test method for stability of initiation point in control net is similar to deformation observing. It only tests the reliability of the initiation point, and only requires one time of adjustment to distinguish the stability of every initiation point.
Peng Guanglin
1997, 11(1): 57-59.
[Abstract](21) [PDF 259KB](3)
Abstract:
The Applieation of the Maximum Posterior Estimation in Large Seale of Holing Engineering
Tan Hui
1997, 11(1): 60-64.
[Abstract](41) [PDF 425KB](4)
Abstract:
This paper introdaces the maximum posterior estimation into adjastment and design of closest mine networks for a large scale of holing through sorvey. This adjustment method is used to the data processing of this networks more properly than the quasi-weight adjustment because the overall adjosement solution of the connected parameters and the united accuracy datam may be obtained. The results of united and partial maximam posteripr adjastment are approximately equal is tested by a practical example.

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