CN206399740U - Rock sample long-term stress loading device - Google Patents
Rock sample long-term stress loading device Download PDFInfo
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- CN206399740U CN206399740U CN201720112868.XU CN201720112868U CN206399740U CN 206399740 U CN206399740 U CN 206399740U CN 201720112868 U CN201720112868 U CN 201720112868U CN 206399740 U CN206399740 U CN 206399740U
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- 239000011435 rock Substances 0.000 title claims abstract description 37
- 238000011068 loading method Methods 0.000 title claims abstract description 27
- 230000007774 longterm Effects 0.000 title claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 24
- 238000007906 compression Methods 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims description 8
- 238000012800 visualization Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
一种岩样长期应力加载装置，包括用以放置岩石试样的垫板，顶板和垫板之间通过多根螺纹杆连接形成一个整体支架，顶板和垫板之间的螺纹杆上还设置有套设在导向管上的承压板，承压板上方设置有加载装置，承压板下方设置有与岩石试样相配套的压缩变形测量装置；压缩变形测量装置中，弹簧一端与承压板连接，弹簧另一端与弹簧压缩面板连接，弹簧压缩面板与岩石试样相配套，测量装置布置于承压板与弹簧压缩面板之间。本实用新型提供的岩样长期应力加载装置，可以解决结构复杂、无法同时考虑应力影响的问题，实现加载可视化并能够及时补载。
A long-term stress loading device for rock samples, including a backing plate for placing rock samples, the top plate and the backing plate are connected by a plurality of threaded rods to form an integral support, and the threaded rods between the top plate and the backing board are also provided with The pressure bearing plate set on the guide pipe, the loading device is arranged above the pressure bearing plate, and the compression deformation measuring device matched with the rock sample is arranged under the pressure bearing plate; in the compression deformation measuring device, one end of the spring is connected with the pressure bearing plate The other end of the spring is connected to the spring compression panel, the spring compression panel is matched with the rock sample, and the measuring device is arranged between the pressure bearing plate and the spring compression panel. The long-term stress loading device for rock samples provided by the utility model can solve the problem that the structure is complex and the influence of stress cannot be considered at the same time, and realize loading visualization and timely supplementary loading.
Description
技术领域technical field
本实用新型涉及岩土工程领域，尤其是一种可用于在不同环境下给试样施加长期应力的岩样长期应力加载装置。The utility model relates to the field of geotechnical engineering, in particular to a rock sample long-term stress loading device which can be used to apply long-term stress to samples in different environments.
背景技术Background technique
为了研究岩体在自然条件下的物理力学特性，现场原位试验虽然具有较好的应用价值，但是试验的成本高，环境条件不易控制，实施难度比较大，因此，应用范围较少。室内岩石力学试验在施加荷载和模拟环境条件方面相对比较方便，一直是研究的热点。随着岩石力学相关问题的研究的逐渐深入，在室内试验过程中，为了真实的模拟自然环境，需要模拟岩体的上部应力和其他自然环境(如冻融、干湿等)的耦合作用，才能得到更为可靠的物理力学参数。In order to study the physical and mechanical properties of rock mass under natural conditions, although the in-situ test has good application value, the cost of the test is high, the environmental conditions are not easy to control, and the implementation is relatively difficult. Therefore, the scope of application is limited. Indoor rock mechanics tests are relatively convenient in applying loads and simulating environmental conditions, and have always been a research hotspot. With the gradual deepening of the research on rock mechanics related issues, in order to truly simulate the natural environment during the laboratory test, it is necessary to simulate the coupling effect of the upper stress of the rock mass and other natural environments (such as freeze-thaw, dry-wet, etc.). Obtain more reliable physical and mechanical parameters.
目前的多场耦合试验设备一般成本较高，构造复杂，而且，在模拟水-岩作用、冻融循环作用等过程中，无法同时考虑应力的影响。The current multi-field coupling test equipment generally has high cost and complex structure, and, in the process of simulating water-rock interaction and freeze-thaw cycle action, the influence of stress cannot be considered at the same time.
发明内容Contents of the invention
本实用新型所要解决的技术问题是提供一种岩样长期应力加载装置，可以解决结构复杂、无法同时考虑应力影响的问题，实现可视化加载大小并能够及时补载。The technical problem to be solved by the utility model is to provide a long-term stress loading device for rock samples, which can solve the problem of complex structure and the inability to consider the influence of stress at the same time, realize the visualization of the loading size and be able to replenish the loading in time.
为解决上述技术问题，本实用新型所采用的技术方案是：一种岩样长期应力加载装置，包括用以放置岩石试样的垫板，顶板和垫板之间通过多根螺纹杆连接形成一个整体支架，顶板和垫板之间的螺纹杆上还设置有套设在导向管上的承压板，承压板上方设置有加载装置，承压板下方设置有与岩石试样相配套的压缩变形测量装置；In order to solve the above technical problems, the technical solution adopted by the utility model is: a long-term stress loading device for rock samples, including a backing plate for placing rock samples, and a plurality of threaded rods are connected between the top plate and the backing plate to form a Integral support, the threaded rod between the top plate and the backing plate is also provided with a pressure bearing plate sleeved on the guide tube, a loading device is arranged above the pressure bearing plate, and a compression chamber matching the rock sample is installed under the pressure bearing plate. Deformation measuring device;
压缩变形测量装置中，弹簧一端与承压板连接，弹簧另一端与弹簧压缩面板连接，弹簧压缩面板与岩石试样相配套，测量装置布置于承压板与弹簧压缩面板之间。In the compression deformation measurement device, one end of the spring is connected to the pressure plate, the other end of the spring is connected to the spring compression panel, the spring compression panel is matched with the rock sample, and the measuring device is arranged between the pressure bearing plate and the spring compression panel.
加载装置中，支撑架设置于承压板上方，支撑架上放置有千斤顶。In the loading device, the support frame is arranged above the pressure bearing plate, and a jack is placed on the support frame.
测量装置中，主尺设置于承压板与弹簧压缩面板之间，游标套设于主尺上并与主尺滑动连接。In the measuring device, the main scale is arranged between the pressure bearing plate and the spring compression panel, and the vernier is sleeved on the main scale and slidably connected with the main scale.
垫板上分别开设有放置岩石试样的正方形刻槽和圆形刻槽。A square groove and a circular groove for placing rock samples are respectively opened on the backing plate.
本实用新型提供的岩样长期应力加载装置，通过千斤顶加载实现了加载方式简单化，且千斤顶可拆卸，不会占用大量空间，以及避免了千斤顶的损坏；加载过程中可通过用压缩变形测量装置测量出弹簧的压缩长度，提高了测量精度，并能在岩样长期受压持荷过程中检测压力的大小，可以解决结构复杂、无法同时考虑应力影响的问题，实现加载量可视化并能够及时补载。The long-term stress loading device for rock samples provided by the utility model simplifies the loading method through jack loading, and the jack is detachable, does not take up a lot of space, and avoids damage to the jack; during the loading process, the compression deformation measurement device can be used The compression length of the spring is measured, which improves the measurement accuracy, and can detect the pressure during the long-term compression and load-bearing process of the rock sample. load.
附图说明Description of drawings
下面结合附图和实施例对本实用新型作进一步说明：Below in conjunction with accompanying drawing and embodiment the utility model is further described:
图1为本实用新型的结构示意图；Fig. 1 is the structural representation of the utility model;
图2为本实用新型垫板的示意图；Fig. 2 is the schematic diagram of backing plate of the present utility model;
图3为本实用新型承压板的示意图；Fig. 3 is the schematic diagram of the utility model bearing plate;
图4为本实用新型测量装置的示意图。Fig. 4 is a schematic diagram of the measuring device of the present invention.
具体实施方式detailed description
如图1-4所示，一种岩样长期应力加载装置，包括用以放置岩石试样12的垫板10，顶板5和垫板10之间通过多根螺纹杆9连接形成一个整体支架，顶板5和垫板10之间的螺纹杆9上还设置有套设在导向管3上的承压板7，承压板7上方设置有加载装置6，承压板7下方设置有与岩石试样12相配套的压缩变形测量装置；As shown in Figures 1-4, a rock sample long-term stress loading device includes a backing plate 10 for placing a rock sample 12, and a plurality of threaded rods 9 are connected between the top plate 5 and the backing plate 10 to form an integral support. The threaded rod 9 between the top plate 5 and the backing plate 10 is also provided with a pressure bearing plate 7 sleeved on the guide pipe 3, a loading device 6 is arranged above the pressure bearing plate 7, and a rock testing device is installed below the pressure bearing plate 7. The compression deformation measuring device matched with sample 12;
压缩变形测量装置中，弹簧8一端与承压板7连接，弹簧8另一端与弹簧压缩面板1连接，弹簧压缩面板1与岩石试样12相配套，测量装置2布置于承压板7与弹簧压缩面板1之间。In the compression deformation measurement device, one end of the spring 8 is connected to the pressure plate 7, the other end of the spring 8 is connected to the spring compression panel 1, the spring compression panel 1 is matched with the rock sample 12, and the measuring device 2 is arranged between the pressure plate 7 and the spring Compress between panels 1.
加载装置6中，支撑架11设置于承压板7上方，支撑架11上放置有千斤顶4。In the loading device 6 , the support frame 11 is arranged above the pressure bearing plate 7 , and the jack 4 is placed on the support frame 11 .
测量装置2中，主尺17设置于承压板7与弹簧压缩面板1之间，游标16套设于主尺17上并与主尺17滑动连接。In the measuring device 2 , the main scale 17 is arranged between the pressure bearing plate 7 and the spring compression panel 1 , and the vernier 16 is sleeved on the main scale 17 and is slidably connected with the main scale 17 .
主尺17以毫米为单位，而游标16为五十分度格，即精度为0.02毫米，主尺17与游标16采用嵌套式。The main ruler 17 takes millimeters as the unit, and the vernier 16 is a 50-degree division, that is, the accuracy is 0.02 millimeters, and the main ruler 17 and the vernier 16 are nested.
读数时首先以游标零刻度线为准在尺身上读取毫米整数，即以毫米为单位的整数部分。然后看游标上第几条刻度线与尺身的刻度线对齐，然后乘以0.02毫米，把上面两次读数的整数部分和小数部分相加，就是所测弹簧压缩变形量。根据虎克定律可求出施加的预应力的大小。When reading, first read the millimeter integer on the ruler body based on the zero scale line of the vernier, that is, the integer part in millimeters. Then see which scale line on the vernier is aligned with the scale line on the ruler body, then multiply by 0.02 mm, and add the integer part and decimal part of the above two readings, which is the measured spring compression deformation. According to Hooke's law, the magnitude of the applied prestress can be obtained.
垫板10上分别开设有放置岩石试样12的边长为100毫米的正方形刻槽14和直径为50毫米的圆形刻槽15，便于岩石试样12居中放置。The backing plate 10 is respectively provided with a square groove 14 with a side length of 100 mm and a circular groove 15 with a diameter of 50 mm for placing the rock sample 12, so that the rock sample 12 is placed in the center.
垫板10四角各开设有螺纹孔13。Four corners of the backing plate 10 are respectively provided with threaded holes 13 .
弹簧8采用蝶形弹簧，蝶形弹簧体积小，能够以较小的变形承受较大的荷载。The spring 8 adopts a butterfly spring, which has a small volume and can bear a larger load with less deformation.
承压板7上设置有水准气泡18，可对承压板7进行调平。The pressure bearing plate 7 is provided with a level bubble 18, which can level the pressure bearing plate 7.
支撑架11为U型支撑架。The support frame 11 is a U-shaped support frame.
垫板10、承压板7、顶板5、测量装置2均采用不锈钢材料制成。Backing plate 10, pressure bearing plate 7, top plate 5, and measuring device 2 are all made of stainless steel.
本实用新型的工作过程如下：The working process of the present utility model is as follows:
使用时，垫板10放平，将岩石试样12居中放置在垫板10上，使弹簧压缩面板1与岩石试样2贴紧，调平水准气泡19使承压板7水平，拧紧螺母固定承压板7，加载时，给千斤顶4加压，顶板5保持不动，承压板7向下移动，弹簧8被压缩，通过测量装置2的读数可知岩样所受压力大小，当达到所需的荷载时，拧紧与螺纹杆9连接的承压板7上的螺母。然后松开千斤顶4，将千斤顶4取下。同时可通过测量装置2来检测是否出现应力损失，如果出现可以再次用千斤顶4进行补载，以保证持荷大小的准确。When in use, the backing plate 10 is laid flat, the rock sample 12 is centered on the backing plate 10, the spring compression panel 1 is closely attached to the rock sample 2, the leveling air bubble 19 is leveled to make the pressure bearing plate 7 level, and the nut is tightened to fix it. The pressure bearing plate 7, when loading, pressurizes the jack 4, the top plate 5 remains motionless, the pressure bearing plate 7 moves downward, and the spring 8 is compressed. The reading of the measuring device 2 shows the pressure on the rock sample. During required load, tighten the nut on the bearing plate 7 that is connected with threaded rod 9. Then unclamp jack 4, jack 4 is taken off. At the same time, the measuring device 2 can be used to detect whether there is a stress loss. If there is a stress loss, the jack 4 can be used to reload again to ensure the accuracy of the load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720112868.XU CN206399740U (en) | 2017-02-07 | 2017-02-07 | Rock sample long-term stress loading device |
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| CN201720112868.XU CN206399740U (en) | 2017-02-07 | 2017-02-07 | Rock sample long-term stress loading device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108414348A (en) * | 2018-05-07 | 2018-08-17 | 绍兴文理学院 | A kind of true triaxial test system and its implementation of test rock |
| CN108760894A (en) * | 2018-07-24 | 2018-11-06 | 三峡大学 | A kind of ultrasonic test holder |
| CN109026092A (en) * | 2018-08-02 | 2018-12-18 | 三峡大学 | The impact of adjustable rigidity is unloaded can effect device and method |
| CN109612840A (en) * | 2018-12-27 | 2019-04-12 | 东北大学 | Experimental device and method for obtaining post-peak curve and residual strength of brittle rock |
| CN109724860A (en) * | 2018-12-25 | 2019-05-07 | 核工业北京地质研究院 | Mudstone core access device and access method |
| CN112098220A (en) * | 2019-10-21 | 2020-12-18 | 华东交通大学 | A self-balancing constant loading device for studying creep performance of CFST members |
| CN112782066A (en) * | 2021-02-07 | 2021-05-11 | 贵州省交通规划勘察设计研究院股份有限公司 | Device and method for high-precision measurement of rock weathering rate |
| CN113686728A (en) * | 2021-07-16 | 2021-11-23 | 太原市玉磊预拌混凝土有限公司 | Variable-pressure vibration maximum dry density measurement method |
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2017
- 2017-02-07 CN CN201720112868.XU patent/CN206399740U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414348A (en) * | 2018-05-07 | 2018-08-17 | 绍兴文理学院 | A kind of true triaxial test system and its implementation of test rock |
| CN108414348B (en) * | 2018-05-07 | 2020-05-26 | 绍兴文理学院 | A true triaxial test system for testing rocks and its realization method |
| CN108760894A (en) * | 2018-07-24 | 2018-11-06 | 三峡大学 | A kind of ultrasonic test holder |
| CN109026092A (en) * | 2018-08-02 | 2018-12-18 | 三峡大学 | The impact of adjustable rigidity is unloaded can effect device and method |
| CN109026092B (en) * | 2018-08-02 | 2024-03-29 | 三峡大学 | Impact energy discharging effect device and method with adjustable rigidity |
| CN109724860A (en) * | 2018-12-25 | 2019-05-07 | 核工业北京地质研究院 | Mudstone core access device and access method |
| CN109724860B (en) * | 2018-12-25 | 2023-11-14 | 核工业北京地质研究院 | Mudstone core access device and access method thereof |
| CN109612840A (en) * | 2018-12-27 | 2019-04-12 | 东北大学 | Experimental device and method for obtaining post-peak curve and residual strength of brittle rock |
| CN109612840B (en) * | 2018-12-27 | 2021-03-09 | 东北大学 | Experimental device and method for obtaining post-peak curve and residual strength of brittle rock |
| CN112098220A (en) * | 2019-10-21 | 2020-12-18 | 华东交通大学 | A self-balancing constant loading device for studying creep performance of CFST members |
| CN112782066A (en) * | 2021-02-07 | 2021-05-11 | 贵州省交通规划勘察设计研究院股份有限公司 | Device and method for high-precision measurement of rock weathering rate |
| CN113686728A (en) * | 2021-07-16 | 2021-11-23 | 太原市玉磊预拌混凝土有限公司 | Variable-pressure vibration maximum dry density measurement method |
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