A direction-finding device and method for measuring ground stress

Abstract

The invention provides a direction-finding device and a direction-finding method for geostress measurement. The direction-finding device is a three-channel independent measurement direction-finding device, including a first measurement channel, a second measurement channel, a third measurement channel, a processor, A memory, a clock module, and a power module; the processor is electrically connected to the first measurement channel, the second measurement channel, the third measurement channel, the memory, the clock module, and the power supply module, respectively ; Wherein, the first measurement channel includes a series-connected geomagnetic measurement module, a first signal conditioning circuit and a first analog-to-digital converter; the second measurement channel includes a series-connected inclination measurement module, a second signal conditioning circuit and a second An analog-to-digital converter; the third measurement channel includes a series rotation angle measurement module, a third signal conditioning circuit and a third analog-to-digital converter. The directional work of ground stress measurement can be carried out in vertical holes, horizontal holes and inclined holes at the same time, and has the advantage of wide application range.

Description

technical field [0001] The invention belongs to the technical field of geostress measurement, and in particular relates to a direction-finding device and a direction-finding method for geostress measurement. Background technique [0002] With the continuous increase of projects such as mining, tunneling, water conservancy and hydropower, geothermal energy development, and nuclear waste disposal in my country, a series of problems such as rockburst, roadway deformation, and high slope instability have become more prominent. The state of stress has important practical significance and can provide an important scientific basis for the study of geodynamics, fault activity and early warning of geological disasters. [0003] Hydraulic fracturing is an in-situ stress measurement method developed in the 1970s. This method is one of the methods recommended by the Test Method Committee of the International Society of Rock Mechanics for determining rock stress. Advanced methods for dee...

AI Technical Summary

Problems solved by technology

[0006] It can be seen that when using the traditional directional device to determine the orientation of the fracturing fracture, it is necessary to select different measuring instruments according to the direction of the hole, which has the problems of low versatility and cumbersome operation; especially when the measurement environment is iron-bearing mineral deposits or large-scale structures When there is interference, the directional device such as the electronic compass will fail, resulting in measurement failure

Images