Determination of the regularities of the soil punching process by the working body with the asymetric tip

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.230256

Keywords:

trenchless technologies, ground puncture, utilities, working body, traffic control

Abstract

The presence of analytical dependencies describing the process of static soil puncture by a working body with a conical asymmetric tip is necessary to create installations with the ability to control the trajectory of the soil puncture.

The paper considers the features of the process of interaction of an asymmetric conical tip with the ground. Analytical relationships were obtained to determine its reactions during a static puncture, the deviation of the head trajectory from a straight line, to determine the size of the soil compaction zone and the magnitude of the destructive force that acts on adjacent communications and other underground objects. It was found that with an increase in the value of the displacement of the top of the cone, for example, from its axis from 0.02 m to 0.08 m with a borehole diameter of 0.2 m, the value of soil resistance increases almost four times. The greatest resistance is achieved when piercing a hard sandy sand.

It was found that with an increase in the displacement of the tip of the tip cone, the deviation of the trajectory increases. The piercing head achieves the greatest deviation from the straight trajectory of movement with a sharper cone and a greater asymmetric deviation of its top, and, for example, in hard sandy loam can be up to 0.17 m with a span of 10 m.

It was found that the size of the soil destruction zone will be almost 1.8 times larger than the tip in the form of a symmetrical cone and reaches from 8 to 12 borehole diameters, depending on the type of soil. The maximum pressure on adjacent objects can reach from 0.06 MPa in hard-plastic clay to 0.09 MPa in hard sandy loam.

The calculated dependences obtained for determining the power and technological parameters depending on the geometric dimensions of the asymmetric tip of the working body can be used to create installations with a controlled static puncture for use in the most common soil conditions.

Author Biographies

Svyatoslav Kravets, National University of Water and Environmental Engineering

Doctor of Technical Sciences, Professor

Department of Building, Road, Melioration, Agricultural Machinery and Equipment

Vladimir Suponyev, Kharkiv National Automobile and Highway University

Doctor of Technical Sciences, Associate Professor

Department of Construction and Road-Building Machinery

Valery Shevchenko, Kharkiv National Automobile and Highway University

PhD, Associate Professor

Department of Construction and Road-Building Machinery

Alexander Yefymenko, Kharkiv National Automobile and Highway University

PhD, Associate Professor

Department of Construction and Road-Building Machinery

Vitaliy Ragulin, Kharkiv National Automobile and Highway University

PhD, Associate Professor

Department of Construction and Road-Building Machinery

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Published

2021-04-20

How to Cite

Kravets, S., Suponyev, V., Shevchenko, V. ., Yefymenko, A., & Ragulin, V. (2021). Determination of the regularities of the soil punching process by the working body with the asymetric tip. Eastern-European Journal of Enterprise Technologies, 2(1 (110), 44–51. https://doi.org/10.15587/1729-4061.2021.230256

Issue

Vol. 2 No. 1 (110) (2021): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2021 Svyatoslav Kravets, Vladimir Suponyev, Valery Shevchenko, Alexander Yefymenko, Vitaliy Ragulin

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