A mold for accurately preparing cracks in rock-like specimens
A technology for rock specimens and cracks, which is applied in the field of sample preparation for rock mechanics testing, can solve problems such as difficult operation, inaccurate crack positioning, complex structure, etc., and achieve the effects of low production cost, improved work efficiency, and simple operation
Active Publication Date: 2018-07-03
HOHAI UNIV
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a mold for accurately preparing cracks in rock-like specimens, and solve the technical problems of inaccurate crack positioning and complex structures and difficult operations in the prior art
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[0031] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0032] Such as figure 1 with figure 2 As shown, a mold for accurately preparing cracks in a rock-like test piece according to the present invention is characterized in that it includes a rock bridge chassis 1, a rock bridge frame 2, a crack plate 3 and an upper cover plate 5 stacked in sequence from bottom to top , the rock bridge chassis 1 is provided with a circular groove for the rock bridge 2 to be sleeved, the rock bridge 2 can rotate in the circular groove, and the two ends of the rock bridge 2 are symmetrically provided with a The fissure disc 3 that rotates inside, the fissure disc 3 is provided with a clamp 4 that can clamp the pre-slit sheet in the vertical direction, and the surfac...
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A mold for precisely preparing cracks in a rock-like test piece is disclosed. The mold comprises a rock bridge chassis, rock bridge frames, crack discs and an upper cover disc which are laminated in order from bottom to top. The rock bridge chassis is provided with a round groove in which the rock bridge frames are sleeved. The rock bridge frames can rotate in the round groove. Two ends of each rock bridge frame are symmetrically provided with the crack discs rotatable in the corresponding rock bridge frame. The crack discs are provided with clamps used for tightly clamping sheets to be cracked at the vertical direction. The surface of each crack disc is provided with a round of gap scales used for adjusting the angle between the corresponding clamp and the corresponding rock bridge frame. The upper cover disc is movably connected to the rock bridge chassis, and tightly compresses the rock bridge frames in the round groove. The periphery of the round grove or the upper cover disc is provided with a round of rock bridge scales used for adjusting the angles between the rock bridge frames and the rock bridge chassis. The mold in simple in structure and convenient to operate, and can accurately adjust the angles of the crack discs and the rock bridges to prepare the needed rock-like test piece provided with precise crack positioning.
Description
technical field [0001] The invention relates to an easy-to-use mold for accurately adjusting the inclination angle of prefabricated cracks and rock bridges in rock-like material test pieces and simultaneously controlling the size variables of the rock bridges and cracks, and belongs to the technical field of sample preparation for rock mechanics testing. Background technique [0002] With the construction of hydropower projects in Southwest my country, the widely distributed jointed rock mass has obvious rheological characteristics and seriously affects the long-term stability of dams. After the impoundment of the high dam, the huge upstream and downstream water head difference will cause changes in the stress field and seepage field. Under their action, the jointed rock mass will produce rheological damage, deformation, and even instability failure. Therefore, it is urgent to carry out simulation in the laboratory. Research on the long-term mechanical parameters of rocks wi...
Claims
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IPC IPC(8): G01N1/36
CPCG01N1/36G01N2001/366
Inventor 王如宾徐波汪淼刘胜
Owner HOHAI UNIV