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Device and method for testing compression performance of filling powder under dynamic-static force

A testing device and force technology, applied in the direction of applying stable tension/compression to test material strength, measuring device, strength characteristics, etc., can solve the problems of not considering the influence of dynamic load compression characteristics, single function, etc., to maintain air The effect of stable area, simple operation, and inhibition of deformation and damage

Active Publication Date: 2021-05-11
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patent application CN203053782U made a self-made test compression mold for coal gangue, which mainly performs static compression tests on loose gangue. Its function is relatively single, and the influence of dynamic load on compression characteristics is not considered.

Method used

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  • Device and method for testing compression performance of filling powder under dynamic-static force
  • Device and method for testing compression performance of filling powder under dynamic-static force

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Such as figure 1 and figure 2 As shown, the test device for the compression performance of the filling powder under dynamic-static force includes a hydraulic cylinder 9, a steel structure frame 13, a lifting platform 5, and a loading plug 12; the bottom end of the steel structure steel frame is arranged on the ground A hydraulic cylinder 9 is installed on the upper surface of the bottom end of the steel structure frame 13, and the loading and unloading of the test bulk 1 is realized through the pressurized oil inlet 10 and the pressure relief oil inlet 11 of the hydraulic cylinder 9, and the piston rod of the hydraulic cylinder 9 extends The end of the cylinder part is provided with a lifting platform 5, and the upper surface of the lifting platform 5 is provided with a cylindrical device 2 and a first load sensor 7, and the first load sensor 7 is located in the inner cavity of the cylindrical device 2, and the cylindrical device 2 is connected to the The input end of...

Embodiment 2

[0055] The difference between embodiment 2 and embodiment 1 is that embodiment 2 is a dynamic impact test.

[0056] The test method for the compression performance of filling bulk under dynamic impact force includes the following steps:

[0057] Considering the influence of dynamic impact force on the compression performance of test bulk 1, the influence of different magnitudes of dynamic impact force on the compression performance of test bulk 1 under different bearing pressures was studied.

[0058] Step 1. Put the hydraulic cylinder 9 into the bottom of the steel structure frame 13, place the cylinder on the lifting platform 5 of the hydraulic cylinder 9, and ensure that the cylinder is aligned with the axial centerline of the lifting platform 5; place the first load sensor 7 and the bottom plate 4 are put into the cylinder in turn, and the bottom plate 4 is installed above the first load sensor 7, and the bottom plate 4 is adjusted to be horizontal by observing the four eq...

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Abstract

A device and method for testing the compression performance of filling bulk under dynamic-static force, including a hydraulic cylinder, a steel structure frame, a hydraulic cylinder installed on the upper surface of the bottom end of the steel structure frame, and a lifting platform, a circular cylinder, etc. Barrel device, first load sensor, loading plunger, and second load sensor. The top of the steel structure frame is provided with movable loading I-shaped blocks and brackets, impact iron blocks and electromagnets in turn. The electromagnets are connected with steel ropes. The device is connected with the computer through wires and multi-channel static strain gauges, and the second load sensor and the first load sensor are respectively connected with the multi-channel static strain gauges through wires. The invention can not only obtain the compression amount and modulus characteristics of the waste rock bulk under static action, but also measure the lateral pressure of the bulk when the bulk is compressed. The strength of surrounding rock, maintaining the stability of the void and the distribution of lateral pressure in the filling bulk have an important guiding role in the design of filling mining.

Description

technical field [0001] The invention belongs to the technical field of ore deposit filling and mining, and in particular relates to a testing device and method for the compression performance of filling bulk under dynamic-static force. Background technique [0002] With the rapid development of the national economy, the demand for mineral resources is increasing year by year. The mining of "three lower" (under the village, under the water body and under the railway) ore bodies and deep metal mineral resources has become an important research in the field of mineral resource mining. As an effective way to liberate the "three lower" ore bodies, the solid waste filling mining technology such as waste rock and tailings can not only effectively control the movement of the overlying strata in the stope, limit the surface subsidence, but also effectively control the movement of the overlying strata in the stope, and in the special environment of deep mining. Under such circumstance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/12G01N3/303G01N3/02G01N3/06
CPCG01N3/02G01N3/06G01N3/12G01N3/303G01N2203/0003G01N2203/001G01N2203/0033G01N2203/0048
Inventor 于庆磊勒治华朱万成杨天鸿牛雷雷曹永胜
Owner NORTHEASTERN UNIV LIAONING
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