Method and device for measuring applied dynamic load axle pressure in three-dimensional dynamic load gas permeation test
A technology of dynamic load and gas, which is applied in the field of measurement and device of dynamic load axial pressure in three-dimensional dynamic load gas permeation test, can solve the problem that the three-dimensional dynamic load gas permeation test data cannot be obtained, and achieves low production cost and easy to use Good effect and simple device structure
Inactive Publication Date: 2013-05-01
GUIZHOU UNIV
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the axial pressure of the test is completed by a pressure testing machine or oil pressure, but these two kinds of force are static load forces, so it is impossible to obtain three-dimensional dynamic load gas penetration test data
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0010] Embodiment of the present invention: the measurement method of applying dynamic load axial pressure in the three-dimensional dynamic load gas penetration test, after the confining pressure and gas pressure of the coal sample to be tested reach the required values, the launcher sends out a block to hit the incident rod Dynamically loaded axial pressure is generated at the top of the shaft, and the axial pressure is transmitted to the coal sample; the velocity of the strike block from the launcher to the impact of the injection rod is measured by the speedometer, and the axial pressure of the coal sample is transmitted to the coal sample equipped with a strain gauge. The data on the transmission rod and absorption rod are received and processed to measure the stress and strain of the coal sample.
[0011] The structure of the three-dimensional dynamic load gas permeameter is as follows: figure 1 As shown, during production, a general three-axis permeameter is used for ref...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method and device for measuring an applied dynamic load axle pressure in a three-dimensional dynamic load gas permeation test. The method comprises the following steps: after the confining pressure and gas pressure of a to-be-tested coal sample reach the required numerical values, utilizing an emitter to send a striking block for striking into the top of an incident bar,thereby generating a dynamic load axle pressure, and then transferring the axle pressure to the coal sample; utilizing a speed meter to measure the speed of the striking block before the striking block strikes into the incident bar and after the striking block is sent by the emitter; and transferring the axle pressure on the coal sample to a transmission rod and an absorbing rod which are provided with strain gages, and receiving the data, thereby detecting the stress and strain conditions of the coal sample. According to the method provided by the invention, the coal sample is supplied with the dynamic load axle pressure by utilizing the emitter to send the striking block for striking into the incident bar; the axle pressure is transferred to the transmission rod and the absorbing rod which are provided with resistance strain gages by the coal sample; the speed of the striking block is detected by the speed meter; and the stress and strain conditions of the coal sample are detected by virtue of the resistance strain gages, thereby supplying the dynamic load axle pressure to the coal sample and performing the detection.
Description
technical field [0001] The invention relates to a coal permeability test method and device, in particular to a method and device for measuring dynamic load axial pressure in a three-dimensional dynamic load gas permeability test. Background technique [0002] At present, among the experimental devices used to study the effect of effective stress on coal gas permeability, most of the experimental devices used by predecessors are similar to triaxial permeameters and other instruments, and the axial pressure applied by this experimental device is a force of medium and low strain rates , through this kind of experimental device, the gas permeation laws of many coals have been studied and obtained. Zhou Shining and Lin Baiquan conducted a theoretical study on the occurrence and flow of coal seam gas, and obtained the relationship between pore pressure, permeability and deformation of coal samples under the premise of constant confining pressure; Experimental research on the law ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/00G01N33/22
Inventor 张义平王强刘勇李希建左宇军江泽表吴桂义袁梅
Owner GUIZHOU UNIV