Mine filling aggregate pressure water absorption rate rapid detection device and test method

Abstract

The invention discloses a mine filling aggregate pressure water absorption rate rapid detection device, which comprises: a water seepage base, the top of which is provided with a groove; the containing cylinder is arranged at the upper part of the water seepage base, and the bottom of the containing cylinder is nested in the groove of the water seepage base; and the compaction cover plate is arranged at the top of the containing barrel and can move up and down in the containing barrel. The invention further discloses a method for rapidly testing the pressure water absorption rate of the mine filling aggregate. The method comprises the following steps: S1, adding the filling aggregate to be tested into water for soaking and stirring; s2, the water seepage base and the containing barrel are installed; s3, the compaction cover plate is placed in the middle of the upper end opening of the containing barrel till the charging process is completed; s4, after pressurization is completed, the mass m2 is weighed, and the filling aggregate in the containing barrel is poured out and dried; s5, calculating the pressure water absorption rate of the filling aggregate; and S6, repeating the steps to test for three times, and taking the average value as the final pressure water absorption rate of the filling aggregate.

Description

Technical Field

[0001] The invention relates to the technical field of mine filling aggregate testing equipment, and in particular to a rapid detection device and a testing method for pressure water absorption rate of mine filling aggregate. Background Art

[0002] The development of mineral resources is vital to the development of the national economy. With the continuous increase in the scale of mineral resource mining, the difficulty of mining and development capabilities face major challenges. In order to ensure the continuity of mine production and the effective recycling of resources, cemented filling mining method, as a safe and efficient mining technology, is widely favored by mine developers. When the mine implements underground filling, the filling body is formed at a high height, so the filling slurry is greatly affected by the hydrostatic pressure, and its aggregate pressure water absorption rate becomes a key indicator affecting the strength ratio of the filling body. However, mine filling technicians often ignore the filling aggregate pressure water absorption rate as an indicator, resulting in the lack of a complete set of filling aggregate pressure water absorption rate testing methods.

[0003] Cementitious filling materials are similar to the mixing concrete technology. They use the hydration reaction of cementitious materials to bond aggregates to achieve a certain strength and have a certain pressure-bearing capacity. However, compared with concrete, the material diversity, low ash-sand ratio and high water-cement ratio of mine cementitious filling materials are destined to not be tested according to the test method for the pressure water absorption rate of concrete aggregates. Therefore, the development of a test method for the pressure water absorption rate of filling aggregates is imminent. Summary of the invention

[0004] In view of the above technical problems, the present invention provides a device and method for quickly detecting the pressure water absorption rate of mine filling aggregate.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows: A rapid detection device for pressure water absorption rate of mine filling aggregates, comprising: A water seepage base with a groove on the top; The containing cylinder is arranged on the upper part of the water seepage base, and the bottom of the cylinder is nested in the groove of the water seepage base; The compacting cover plate is arranged on the top of the containing cylinder and can move up and down in the containing cylinder.

[0006] The container body comprises: An upper tube and a lower tube which are nested and connected to each other; Among them, the upper port of the lower tube is a convex structure; the upper port of the upper tube is a flat end, and the lower port is an inverted concave structure that can be adapted and installed with the convex structure of the lower tube.

[0007] The present invention also provides a method for quickly testing the pressure water absorption rate of mine filling aggregate, comprising the following steps: S1. Add the filling aggregate to be tested into water and soak and stir until the filling aggregate reaches a saturated state; S2, install the seepage base and the containing cylinder, weigh the mass m1 of the seepage base and the containing cylinder, and put the filling aggregate in step S1 into the containing cylinder. Do not tamp it during the filling process. The aggregate is naturally piled in the containing cylinder. After it is full, use a tool to smooth the upper end of the containing cylinder; S3. Place the compaction cover plate in the middle of the upper port of the loading cylinder. The loading process is now completed. Place the water seepage base and the loading cylinder on a press to pressurize. Set the pressure threshold. Stop pressurizing when the pressure reaches the pressure threshold. The pressure threshold of the press is determined by referring to specific engineering examples. During the pressurization process, water will overflow from the bottom of the water seepage base. Wipe the moisture on the device platform in time. S4, after the pressurization is completed, weigh the mass m2, pour out the filling aggregate in the cylinder for drying, and weigh the dried filling aggregate m3; S5. Calculate the pressure water absorption rate of filling aggregate; S6. Repeat the above steps three times and take the average value as the final pressure water absorption rate of the filling aggregate.

[0008] Wherein, in step S5, the pressure water absorption rate of the filling aggregate is calculated according to the following formula: .

[0009] The beneficial effects of the present invention are as follows: the present invention effectively simulates the pressure environment of aggregate at the filling site, can accurately test the real pressure water absorption rate of the filling aggregate, fills the technical gap in the pressure water absorption rate test of the filling aggregate, and provides important technical parameters for the strength ratio of the filling aggregate. The proposed rapid testing device has a simple structure and is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention.

[0011] Figure 2 Schematic diagram of the testing method of an embodiment of the present invention.

[0012] In the figure: 1-seepage base, 2-lower cylinder, 3-upper cylinder, 4-compacting cover plate, 5-upper end of press, 6-lower end of press. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0014] like Figure 1 As shown, a device for rapid detection of pressure water absorption rate of mine filling aggregates comprises: a water seepage base 1, with a groove on the top; a containing cylinder, arranged on the upper part of the water seepage base 1, and its bottom is nested in the groove of the water seepage base 1; a compaction cover plate 4, arranged on the top of the containing cylinder, and capable of moving up and down in the containing cylinder. The containing cylinder comprises: an upper cylinder 3 and a lower cylinder 2 which are nested and connected to each other; wherein the upper port of the lower cylinder 2 is a convex structure; the upper port of the upper cylinder 3 is a flat end, and the lower port is an inverted concave structure which can be mutually adapted and installed with the convex structure of the lower cylinder 2.

[0015] Specifically, Figure 1 As shown, a device for quickly detecting pressure water absorption rate of mine filling aggregates comprises a water seepage base 1, a containing cylinder and a compaction cover plate 4. The containing cylinder is connected by nesting of an upper cylinder 3 and a lower cylinder 2, and is made of a fierce steel pipe material.

[0016] Specifically, the water seepage base 1 has an inner diameter of φ133 mm, a height of 30 mm, and a concave structure, and is used to nest the lower cylinder 2 of the containing cylinder.

[0017] Specifically, the upper port of the lower tube 2 is convex, and the lower port is flat, with an inner diameter of φ126mm and a height of 109mm. The lower port of the lower tube 2 is inserted into the groove of the seepage base 1. The upper port of the upper tube 3 is flat, and the lower port is inverted concave, with an inner diameter of φ108mm. The lower port of the upper tube 3 is connected to the upper port of the lower tube 2 by nesting, with a connection distance of 8mm, and the internal volume of the containing tube is 1L.

[0018] Specifically, the compacting cover plate 4 has an outer diameter of φ107 mm and a height of 60 mm. The compacting cover plate 1 can move up and down in the containing cylinder.

[0019] Specifically, the water seepage base 1 is placed at the lower end 5 of the press, and excess water in the aggregate to be tested can overflow from the nesting joint between the water seepage base 1 and the lower tube 2 .

[0020] Specifically, the compaction cover plate 4 contacts the upper end 6 of the press, and pressure is applied to the aggregate to be tested through the compaction cover plate 4 .

[0021] like Figure 2 As shown, the present invention also provides a method for quickly testing the pressure water absorption rate of mine filling aggregate, comprising the following steps: S1. Add the filling aggregate to be tested into water and soak and stir until the filling aggregate reaches a saturated state; S2, install the seepage base 1 and the containing cylinder, weigh the mass m1 of the seepage base 1 and the containing cylinder, and put the filling aggregate in step S1 into the containing cylinder. Do not tamp it during the filling process. The aggregate is naturally piled in the containing cylinder. After it is full, use a tool to smooth the upper end of the containing cylinder; S3, place the compaction cover plate 4 in the middle of the upper port of the loading cylinder, and the loading process is completed. Place the water seepage base 1 and the loading cylinder between the upper end 5 and the lower end 6 of the press, pressurize, set the pressure threshold, and stop pressurizing when the press reaches the pressure threshold. The pressure threshold of the press is determined by referring to the specific engineering example. During the pressurization process, water will overflow from the bottom of the water seepage base 1, and the moisture on the device platform should be wiped off in time; S4, after the pressurization is completed, weigh the mass m2, pour out the filling aggregate in the cylinder for drying, and weigh the dried filling aggregate m3; S5. Calculate the pressure water absorption rate of filling aggregate; S6. Repeat the above steps three times and take the average value as the final pressure water absorption rate of the filling aggregate.

[0022] Wherein, in step S5, the pressure water absorption rate of the filling aggregate is calculated according to the following formula: .

[0023] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A rapid detection device for pressure water absorption rate of mine filling aggregate, characterized in that: include: A water seepage base (1) having a groove on the top; A containing cylinder body is arranged on the upper part of the water seepage base (1), and its bottom is nested in the groove of the water seepage base (1); The compacting cover plate (4) is arranged on the top of the containing cylinder and is capable of moving up and down in the containing cylinder.

2. A device for rapid detection of pressure water absorption rate of mine filling aggregate according to claim 1, characterized in that: The container body comprises: An upper tube (3) and a lower tube (2) which are nested and connected to each other; The upper port of the lower tube (2) is a convex structure; the upper port of the upper tube (3) is a flat end, and the lower port is an inverted concave structure that can be mutually adapted and installed with the convex structure of the lower tube (2).

3. A method for rapid testing of pressure water absorption rate of mine filling aggregate, characterized in that: The following steps are involved: S1. Add the filling aggregate to be tested into water and soak and stir until the filling aggregate reaches a saturated state; S2, install the seepage base (1) and the containing cylinder, weigh the mass m1 of the seepage base (1) and the containing cylinder, and load the filling aggregates in step S1 into the containing cylinder. Do not tamp the aggregates during loading. The aggregates are naturally piled in the containing cylinder. After the filling is full, use a tool to smooth the upper end of the containing cylinder; S3, placing the compacting cover plate (4) in the middle of the upper port of the loading cylinder, the loading process is now completed, and the water seepage base (1) and the loading cylinder are placed on a press to be pressurized, and a pressure threshold is set. When the pressure reaches the pressure threshold, the press stops pressurizing. The pressure threshold of the press is determined by referring to a specific engineering example. During the pressurization process, water will overflow from the bottom of the water seepage base (1), and the moisture on the device platform should be wiped off in time; S4, after the pressurization is completed, weigh the mass m2, pour out the filling aggregate in the cylinder for drying, and weigh the dried filling aggregate m3; S5. Calculate the pressure water absorption rate of filling aggregate; S6. Repeat the above steps three times and take the average value as the final pressure water absorption rate of the filling aggregate.

4. A method for rapid testing of pressure water absorption of mine filling aggregate according to claim 3, characterized in that: In step S5, the pressure water absorption rate of the filling aggregate is calculated according to the following formula: 。

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