Three-stage consolidation characteristics of highly organic peaty soil

With the continuous development of urban underground space, the environmental effects of foundation pit excavation have been paid extensive close attention. Unfortunately, there are few researches in mucky soil and peaty soil. Adopted the software of FLAC-3D, the ground deformation due to the foundation pit excavation is simulated. Considering the characteristic of the soil, the Modified Cam-clay model and Mohr-coulomb model are used during the simulation. Meanwhile, the structure units are used to simulate foundation pit structure. The results of the field measurement and numerical simulation suggest that the influenced range soil is about 2.7 times of the excavation depth. Furthermore, the Modified Cam-clay model can obtain a better result to simulate the mucky soil and peaty soil in Kunming. The results can be referred to design and construct of foundation pits.

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The Coleraine Hoard

Antiquity ◽

10.1017/s0003598x00012357 ◽

1937 ◽

Vol 11 (41) ◽

pp. 39-45 ◽

Cited By ~ 11

Author(s):

Harold Mattingly ◽

J. W. E. Pearce ◽

T. D. Kendrick

Keyword(s):

Peaty Soil ◽

Considerable Depth

Early in 1854, in the townland of Ballinrees, about three and a half miles west of Coleraine, county Londonderry, Ireland, a labouring man unearthed from a considerable depth in peaty soil one of the most remarkable hoards of Roman silver ever found in our isles. Though no trace remained of any urn or other container, it was apparent, both from the depth of the deposit and from the closeness with which the whole was packed together, that it was indeed a hoard, no mere chance series of deposits.

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Numerical Simulation of Sand Fill to Allow Operation of Pile Driving Rigs on Peaty Soil

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/463/4/042045 ◽

2018 ◽

Vol 463 ◽

pp. 042045

Author(s):

A Nikitin

Keyword(s):

Numerical Simulation ◽

Pile Driving ◽

Peaty Soil

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Effect of soil type and depth on crop production

The Journal of Agricultural Science ◽

10.1017/s0021859600047353 ◽

1984 ◽

Vol 103 (2) ◽

pp. 377-386 ◽

Cited By ~ 1

Author(s):

J. W. S. Reith ◽

R. H. E. Inkson ◽

K. S. Caldwell ◽

W. E. Simpson ◽

J. A. M. Ross

Keyword(s):

Soil Type ◽

Crop Production ◽

Dry Matter ◽

Soil Depth ◽

Mineral Soil ◽

Soil Series ◽

Land Capability ◽

Local Soil ◽

Peaty Soil ◽

Mineral Soils

SUMMARYTopsoils from eight different soil series were substituted for the local soil in three arrangements involving two depths of topsoil and either local or sand subsoils. A rotation of crops was grown with uniform annual N, P and K treatments for 24 years. A peaty soil produced the highest yields of grain, straw and grass, presumably because it released more N than the mineral soils, but an average yield of swedes. No mineral soil consistently produced higher yields of all crops and, although there were some significant differences, the variations in yield were generally relatively small. The deep topsoil consistently produced the highest yields. Topsoil with sand subsoil gave the lowest yields of grain, straw and swedes but not of grass.All the crops on the peaty soil had higher concentrations of P in the dry matter than those from the seven mineral soils. Crops and herbage on the Laurencekirk and Foud-land soils had consistently slightly higher P concentrations than those on the other five mineral soils. Compared with the amounts applied, the crops removed considerably more K but only 45–68% of the P. There were large differences in the proportion of the P residues extractable by acetic acid from the different soil series.The depth of topsoil was at least as important as soil type in determining yield, and the results support the use of soil depth as one of the main factors used in the Land Capability Classification for Agriculture.

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