Drilling omnidirectional stress measuring device and method
A stress measurement and angle measurement device technology, applied in the field of borehole wall stress measurement and borehole omnidirectional stress measurement device, can solve the problems of inability to measure pressure at the same time, inability to install at will, and achieve low cost and volume reduction. The effect of small size and simple measurement method
Pending Publication Date: 2019-11-19
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Problems solved by technology
However, this patent needs to pre-fix the measurement direction by observing the rotation angle of the angle measuring instrument during installation, and it cannot be installed at will
Moreover, this patent still can only measure the pressure in one direction, and cannot measure the pressure in all directions at 360 degrees at the same time
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[0067] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0068] figure 1 — image 3 It is a preferred embodiment of a drilling omnidirectional stress measuring device that can be installed in any direction of the present invention.
[0069] In this embodiment, the device includes a cylindrical housing 1 , a first sensing element 2 , a second sensing element 3 , a third sensing element 4 , an angle measuring ring 5 , a signal line 6 and a measuring circuit 7 . The cylindrical shell is a sealing structure, which can be achieved in various ways, such as thread sealing, end cap plus sealing ring sealing and so on.
[0070] In actual use, more than 3 or less than 3 sensing elements can be provided, and the plurality of sensing elements can be evenly or unevenly distributed on the circumference. The more sensing elements are installed, the more accurate the measurement results will be. For example, if one sensing element is ar...
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The invention provides a drilling omnidirectional stress measuring device and method and belongs to the technical field of sensors used for monitoring rock soil stress. The drilling omnidirectional stress measuring device comprises a shell, an angle measuring device arranged in the inner cavity of the shell and at least two sensing elements; a plane where the angle measuring device is located anda plane where each sensing element is located are respectively vertical to a central axis of the shell; each sensing element comprises a vibrating wire, and an included angle is formed between the vibrating wires of two adjacent sensing elements; and the angle measuring device is fixed at one side of any vibrating wire. The drilling omnidirectional stress measuring device does not need to controlan initial mounting direction in advance when being mounted, a special directional mounting tool is not required, mounting is convenient, drilling omnidirectional stress can be measured, project practices can be better guided, and the requirement of a project on stress measurement is met; meanwhile, the measuring method is simple, and manufacturing cost is low.
Description
technical field [0001] The invention belongs to the technical field of sensors for monitoring rock-soil stress, and in particular relates to a borehole omnidirectional stress measurement device and method, which are used for borehole wall stress measurement. Background technique [0002] The drilling stress measuring device is installed in the deep blind hole. The existing drilling stress measuring device has only one force-sensitive direction. In practical applications, it is only used to measure the vertical hole wall stress, and then determine the location of the measuring device. For the stress in other directions at the same position, the current drilling stress measurement device cannot realize simultaneous measurement, and it cannot be realized by changing the force-sensitive direction of the measurement device, but the size of the drilling stress in each direction The difference is often very large, and only measuring the drilling stress in the vertical direction oft...
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IPC IPC(8): G01L5/00G01B7/30
CPCG01L5/0047G01B7/30
Inventor 周玉科
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS