Test method based on ladder support of composite bearing body in deep roadway with different lithology
A test method and carrier technology, applied in the field of coal mining, can solve the problems of deformation and instability of surrounding rock, failure of support, etc., and achieve the effect of convenient assembly and obvious convergence.
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0037] see Figure 1-2 , the present invention provides a technical solution: based on the test method for step support of composite bearing bodies in deep roadways of different lithology, a plane stress loading experimental device is used, and the plane stress loading experimental device includes a plane model frame 2, a flange plate 3, and a jack 4 And support plate 5, the length, height and thickness of plane model frame 2 are respectively 1.8m, 1.2m and 0.3m, the quantity of jack 4 is no less than six, and one end of jack 4 is all connected with the middle part of one...
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