![the test site will be modeled in flac3d the test site will be modeled in flac3d](https://jundroo.blob.core.windows.net/simplerockets/files/2019/4/21/FpH33U/UserView-4.jpg)
The aim of this paper is to evaluate the effects of key test parameters on the slotter test results. The borehole slotter technique requires cutting of half moon shaped slots at different orientations parallel to the test hole axis using a small diamond impregnated blade and monitoring of the strains which are relieved normal to the slot direction.
![the test site will be modeled in flac3d the test site will be modeled in flac3d](https://itasca-int.objects.frb.io/assets/img/site/software/speed_10x.png)
This instrument enables calculation of in-situ stress tensor using three boreholes without the need for mounting strain gauges on the borehole wall. The 2D borehole slotter is an instrument which is used in HQ boreholes (96-104 mm diameter), and allows calculation of 2D stress tensor in a plane normal to the borehole axis. The obtained numerical results provided valuable insights in selecting the governing in-situ stress condition from the recorded field data.Ībstract = "A stress calculation method was proposed for the new stress measurement technique using the borehole slotter device. A very good agreement was achieved between numerical and field test results. Accordingly, the borehole slotter tests conducted at Bakhtiari dam site-Iran, was simulated numerically. The validity of numerical findings were discussed and compared against practical observations. The effects of variations in rock mass deformation modulus on the strain/stress relaxation, and thus borehole slotter test results, were investigated numerically. A precise 3D numerical model of typical slotter test condition was constructed using the FLAC3D code. A stress calculation method was proposed for the new stress measurement technique using the borehole slotter device.