Soil Failure by Introducing Fluid under Pressure (I)

Appropriate Design of a Subsoiler with Fluid Introduction

Abstract

The object of the present study is to design a subsoiler which introduces fluid into soil-bed layer to break soil. Laboratory tests using a movable soil-bin were conducted to determine the optimum tool shape to get maximum soil failure and to minimize the draft force. The nature of soil failure was also studied. As a result, the following points were clarified; the rate of the draft forces produced by a chisel and the standard of the subsoiler, the position of the nozzle port to introduce fluid and the method to prevent the leakage of fluid into the subsoiler path.
This study was conducted by a National Grant-in Aid for Scientific Research. The writer wishes to express his gratitude for making this work possible.