Pressure-bearing device for simulating high-energy-storage rock mass excavation unloading test and sealing method
A technology of excavation unloading and pressure-bearing device, which is applied in the directions of engine sealing, measuring device, instrument, etc., can solve the problems of heavy annular boss, rock mass disturbance, unfavorable sealing operation of test personnel and test personnel, etc. Ensures a tight fit and enhances the sealing effect
Active Publication Date: 2021-12-14
长春市镨策试验仪器有限责任公司
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Problems solved by technology
Although this patent has a good sealing effect between the rock mass and the indenter, for large-scale rock mass, the weight of the circumferential boss is relatively large, which is not conducive to the sealing operation of testers, especially those with less strength. and, after the high confining pressure loading and unloading test, the position where the pressure head is in contact with the oil cylinder is difficult to disengage instantly due to the existence of the hydraulic oil film, or it may disturb the rock mass after the test and destroy the original state of the rock mass after the test
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] The purpose of the present invention is to provide a pressure-bearing device and sealing method for simulating the excavation and unloading test of high energy storage rock mass, so as to solve the problems in the above-mentioned prior art and strengthen the rock mass and pressure head in the conventional triaxial test. Excellent sealing effect, while improving the convenience of sealing operation.
[0031] In order to make the above objects, features a...
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The invention discloses a pressure-bearing device for simulating a high-energy-storage rock mass excavation unloading test, which comprises two pressure-bearing blocks, a sleeve and a sealing ring, wherein the two pressure-bearing blocks are respectively arranged at two ends of a to-be-tested rock mass; the sleeve can sleeve the to-be-tested rock mass and the pressure-bearing block and is attached to the to-be-tested rock mass and the pressure-bearing block; and the sealing ring sleeves the pressure-bearing block and the sleeve through the fastening element, so that the sealing ring can be tightly pressed on the sleeve and the pressure-bearing block. The invention further discloses a sealing method for simulating the excavation unloading test of the high-energy-storage rock mass, which comprises the following steps of symmetrically arranging the two pressure-bearing blocks at two ends of the to-be-tested rock mass by using the pressure-bearing device, sleeving the to-be-tested rock mass and the pressure-bearing blocks with the sleeve, sleeving the pressure-bearing blocks and the sleeve with the sealing ring, pressing the sealing ring on the sleeve and the pressure-bearing block through the fastening element, so that the sealing purpose is achieved. The abutting surfaces of the sealing ring, the pressure-bearing block and the sleeve are inclined surfaces, so that the damage to the sleeve caused by stress concentration is avoided.
Description
technical field [0001] The invention relates to the technical field of indoor rock mechanics experiments, in particular to a pressure-bearing device and a sealing method for simulating high-energy storage rock mass excavation and unloading tests. Background technique [0002] The excavation and unloading conditions of high energy storage rock mass at engineering scale can be realized through the loading and unloading path of conventional triaxial test of rock mass at laboratory scale. When simulating the stress state of high-energy storage rock mass before excavation in the laboratory, it is necessary to apply high confining pressure to the rock mass, and the confining pressure value reaches tens or even hundreds of MPa; when simulating the stress state of the excavation process, it is necessary to Quickly remove the high confining pressure of the rock mass. In order to ensure that the test values are true and effective, it is necessary to prevent hydraulic oil from enter...
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Patent Timeline
Login to View More IPC IPC(8): G01N3/02F16J15/06
CPCG01N3/02F16J15/061G01N2203/0003G01N2203/0019G01N2203/0256G01N3/08G01N2203/0246G01N2203/0232G01N1/36
Inventor 王鑫郑博文郝庆泽姜立波曲道德曹东风王长新
Owner 长春市镨策试验仪器有限责任公司