Pipeline right‐of‐way construction activities impact on deep soil compaction

2019 ◽  
Vol 35 (2) ◽  
pp. 293-302
Author(s):  
Mehari Z. Tekeste ◽  
Harold M. Hanna ◽  
Erica R. Neideigh ◽  
Andrew Guillemette
Keyword(s):  
Soil Compaction ◽  
Deep Soil ◽  
Right Of Way

scholarly journals Examination of the physical state of the soil under conventional and reduced tillage systems

2013 ◽  
pp. 183-186
Author(s):  
Géza Tuba
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Soil Compaction ◽  
Soil Layer ◽  
Weather Conditions ◽  
Penetration Resistance ◽  
Conventional Tillage ◽  
Reduced Tillage ◽  
Deep Soil ◽  
Tillage Systems

he effect of reduced and conventional tillage systems on soil compaction and moisture content in two years with extreme weather conditions is introduced in this paper. The investigations were carried out in a long-term soil cultivation experiment set on a heavy textured meadow chernozem soil at the Karcag Research Institute. In 2010 the amount of precipitation during the vegetation period of winter wheat was 623.3 mm, 2.2 times higher than the 50-year average, while in 2011 this value was 188.7 mm giving only 65% of the average. The examinations were made after harvest on stubbles on 4 test plots in 5 replications in the case of each tillage system. Soil compaction was characterised by penetration resistance values, while the actual soil moisture contents were determined by gravimetry. The values of penetration resistance and soil moisture content of the cultivated soil layer were better in the case of reduced tillage under extreme precipitation conditions. It could be established that regular application of deep soil loosening is essential due to the formation of the unfavourable compact soil layer under 30 cm. Conventional tillage resulted in enhanced compaction under the depth of ploughing, the penetration resistance can reach the value of 4 MPa under wet, while even 8 MPa under dry soil status.

scholarly journals Experimental Researches Regarding Determination of Soil Cone Index in a Soil-Tyre Interaction Process

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Adrian MOLNAR ◽  
Victor ROŞ ◽  
Ioan DROCAŞ ◽  
Ovidiu RANTA ◽  
Sorin STĂNILĂ ◽  
...  
Keyword(s):  
Experimental Determination ◽  
Soil Compaction ◽  
Soil Surface ◽  
Interface Layer ◽  
Interaction Process ◽  
Deep Soil ◽  
Wheel Load ◽  
Initial Stress State ◽  
Cone Index

Soil compaction mainly occurs in occasions related with agricultural traffic, when the soil is subjected to various applied loads by different types of agricultural implements. Soil surface compaction and deep soil compaction occurs because of soil-tyre interaction process that will modify the initial stress state. This will alter the initial soil physical properties, so it is possible to evaluate the soil compaction by measuring their variation. This paper presents a tool and a method for experimental determination, in laboratory conditions, of soil cone index at soil-tyre interface layer and on soil profile, being focused only on data related with soil cone index influenced by wheel load and number of passes. The analysis of measured data showed that the analyzed method for experimental determination of soil cone index can be used also in field conditions, for studies related with spatial variation of soil cone index due to agricultural traffic.

J-DISTAS: predict field readiness to ensure efficiency of field operations and avoid soil compaction.

2021 ◽  
Author(s):  
Marine Lacoste ◽  
Hocine Bourennane ◽  
Mathieu Lamandé ◽  
Clément Dupré ◽  
Annie Duparque ◽  
...  
Keyword(s):  
Soil Water ◽  
Soil Compaction ◽  
Crop Production ◽  
High Efficiency ◽  
Expert Knowledge ◽  
Soil Water Potential ◽  
Pedotransfer Functions ◽  
Soil Horizon ◽  
Global Changes ◽  
Deep Soil

<p>Sustainable crop production implies high efficiency of field operations and protection of the soil as a natural resource. Soil physical fertility is threatened by compaction, especially deep soil horizons for which remediation is more critical. Increased soil compaction, linked to the increase of agricultural equipment weight, causes yield losses on spring and summer crops. To avoid soil compaction and ensure field operations efficiency, including satisfactory crop production in a cost-effective way, field readiness prediction is necessary. Field readiness is defined by the combination of soil workability (soil suitability for cultural operations) and soil trafficability (soil capacity to support machinery during traffic without soil physical degradation).</p> <p>Available tools focused on one part of the problem, e.g. soil compaction risk in deep soil horizon, or possibility of efficient field operation ; each has usually been built for a specific pedoclimatic context, which questions its application in a broader context. Available tools also frequently need to be upgraded to better consider compaction risk according to machinery evolution.</p> <p>The J-DISTAS project (2019-2022) aims at evaluating and improving these tools, and structuring them to create a prototype of interoperable tools to predict field readiness. The resulting tool will be based on the combination of two mechanistic models (Terranimo for soil compaction and the CHN crop model for soil water content), pedotransfer functions to estimate soil water potential and soil workability, and a decisional tool of field readiness build from expert knowledge. Its ability to predict field readiness and its sensibility to input data will be evaluated.</p> <p>The developed inter-operable tools could be used as a decision support tool that includes field readiness in strategic decisions, conception of cropping systems in the context of global changes, or optimization of mechanical cost for equipment in agricultural machinery, and will help to soil physical quality protection.</p>

scholarly journals Theoretical and experimental study of deep soil compaction with a cone reamer

2021 ◽  
Vol 1 (3) ◽  
pp. 60-70
Author(s):  
Kudratullo Z. Tilloev
Keyword(s):  
Mathematical Modeling ◽  
Dynamic Characteristics ◽  
Soil Compaction ◽  
System Analysis ◽  
Surface Deformation ◽  
Experimental Studies ◽  
Operating Conditions ◽  
Road Surface ◽  
Deep Soil ◽  
The Road

Introduction. The road-building machines and mechanisms are always improved depending on the tasks formed in the specific operating conditions of these machines. One of the problems of road construction in difficult climatic conditions is the lack of ground base strength, which results in road surface deformation during operation and periodic traffic restrictions, increasing the cost of maintenance. The road surface annual repair does not fundamentally solve the problem of the roads’ long-term and reliable performance. This problem can be solved by modernizing, for example, a working body for soil compaction based on a crawler excavator. Research aim is to develop a mathematical model for determining the dynamic characteristics of a cone reamer’s effective design to ensure deep compaction of soil foundations for highways and industrial and civil facilities. Research methodology is based on a system analysis of the basic tracked vehicle, the working body, and the compacted soil. The research methods also include mathematical modeling of the cone working body interaction with the soil. Results reliability is confirmed by comparing the results of numerical modeling and experimental studies. The discrepancy between the obtained results of mathematical modeling and laboratory tests in terms of torque and power does not exceed 7–10%. Conclusions. A method for determining the dynamic characteristics of cone devices is developed, and calculation formulas are derived for determining the tilting moment and torque that are applied to the shaft when compacting soils with different characteristics. Experimental studies have been conducted 70 "Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal". No. 3. 2021 ISSN 0536-1028 that have shown the efficiency of this working body. The developed method for determining the dynamic characteristics of cone devices is experimentally confirmed.

scholarly journals Evaluating Soil Compaction with a Portable Electronic Cone Penetrometer

1999 ◽  
Vol 9 (3) ◽  
pp. 440-443
Author(s):  
Carl R. Crozier ◽  
Ronnie W. Heiniger ◽  
Michael Bishop
Keyword(s):  
Soil Compaction ◽  
Large Data ◽  
Large Data Sets ◽  
Agricultural Fields ◽  
Data Sets ◽  
Cone Penetrometer ◽  
Traffic Patterns ◽  
Analog Scale ◽  
Deep Soil ◽  
Single Person

During Summer 1997, soil compaction in agricultural fields was evaluated using a portable electronic cone penetrometer. Rather than requiring the operator to read from an analog scale, this penetrometer stores data in a digital form, which are downloaded to a personal computer for analysis. Soil strength, measured in 1-inch (2.5-cm) increments, can be stored for up to 100 25-inch (64-cm) deep soil profiles. This instrument can be operated by a single person and facilitates collecting large data sets required to characterize highly variable soil environments. Because the penetrometer was designed to measure and formulate predictions about the trafficability of wet soils, it is often incapable of measuring the higher soil resistance occurring in drier agricultural fields. If used soon after rainfall or irrigation, it is useful in detecting hardpans associated with tillage or traffic patterns.

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