NL2030650B1 - Combined multifunctional servo control loading similar simultation experiment table and test method - Google Patents
Combined multifunctional servo control loading similar simultation experiment table and test method Download PDFInfo
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- NL2030650B1 NL2030650B1 NL2030650A NL2030650A NL2030650B1 NL 2030650 B1 NL2030650 B1 NL 2030650B1 NL 2030650 A NL2030650 A NL 2030650A NL 2030650 A NL2030650 A NL 2030650A NL 2030650 B1 NL2030650 B1 NL 2030650B1
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- Netherlands
- Prior art keywords
- similar
- side beam
- servo control
- loading
- experiment table
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- 238000011068 loading method Methods 0.000 title claims abstract description 51
- 238000002474 experimental method Methods 0.000 title claims abstract description 19
- 238000010998 test method Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000004088 simulation Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 18
- 238000009412 basement excavation Methods 0.000 abstract description 13
- 238000011160 research Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 239000003245 coal Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005065 mining Methods 0.000 abstract description 7
- 108091006146 Channels Proteins 0.000 description 12
- 238000010276 construction Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 2
- 241000581364 Clinitrachus argentatus Species 0.000 description 1
- 208000026097 Factitious disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003455 independent Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0254—Biaxial, the forces being applied along two normal axes of the specimen
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
Abstract
The present disclosure provides a combined multifunctional servo control loading similar simulation experiment table and, a test methodJ The experiment table is mainly formed, by combining two loading devices which have the same structure and function, wherein each loading device mainly comprises a base, a top beam, a left side beam, a right side beam, a hydraulic servo control loading system and a similar experiment material filling groove. By means of the experiment table, the nonlinear control loading test of planar similar material models such as slope engineering excavation and coal seam mining can be realized, and the nonlinear control loading test research of the three—dimensional effect of the tunnel engineering excavation and supporting process can be carried out.
Description
P1022 /NLpd
COMBINED MULTIFUNCTIONAL SERVO CONTROL LOADING SIMILAR SIMULTATION
EXPERIMENT TABLE AND TEST METHOD
The present disclosure relates to a combined multifunctional servo control loading similar simulation experiment table and a test method. By means of the experiment table, nonlinear control loading test research of planar similar material models such as slope engineering excavation and coal seam mining under different stress boundary conditions can be carried out, and nonlinear con- trol loading test research of three-dimensional effect of tunnel engineering excavation and supporting processes under different stress boundary conditions can be carried out.
In recent years, with the high-speed development of economic construction in China, various high and large slope projects and long and large tunnel projects with high construction difficulty and safety risk are continuously emerged. In addition, after un- derground coal resources are mined, overlying rock mass in shallow goaf generates stress redistribution, which causes additional movement and deformation of the earth surface, accordingly, the earth surface buildings {structures} settle, locally crack, in- cline, collapse, etc., and the planning, and the construction and the safe operation of the buildings (structures) above the goaf are seriously influenced and harmed.
In order to solve various challenging problems in the engi- neering construction and mining engineering practice, the current situation that the current theoretical research obviously lags be- hind the engineering practice is changed, it is urgently needed to research a combined multifunctional servo control loading similar simulation experiment table suitable for different engineering re- quirements, and theoretical results are summarized and extracted through a large amount of indoor experimental research, and thus various engineering practices are better guided and served.
Therefore, under different stress boundary conditions, a com- bined multifunctional servo control loading similar simulation ex- periment table is researched and designed for completing planar similar material model tests such as slope engineering excavation and coal seam mining and nonlinear control loading test research of a three-dimensional effect in the tunnel engineering excavation and supporting process, and it is a key for indoor similar simula- tion test research.
The present disclosure provides a combined multifunctional servo control loading similar simulation experiment table, which overcomes the defect of nonlinear stress boundary loading of an existing indoor similar simulation test, and reasonably reflects the three-dimensional effect of the tunnel engineering excavation and supporting process. The present disclosure provides a new idea and test equipment for solving the above problems, and has im- portant practical value.
In order to solve the technical problem, The present disclo- sure adopts the following technical solution: the experiment table is mainly formed by combining two loading devices which have the same structure and function, and each loading device mainly com- prises the following parts: a base, a top beam, a left side beam, a right side beam, a hydraulic servo control loading system and a similar experimental material filling groove, wherein the left side beam and the right side beam are arranged on the base, the similar experimental material filling groove is arranged between the left side beam and the right side beam, the top beam is ar- ranged at the tops of the left side beam and the right side beam, the left side beam and the right side beam are connected with the top beam by adopting bolts for reinforcement, the hydraulic servo control loading system comprises eight independent first hydraulic
Jacks arranged on the top beam and twelve independent second hy- draulic jacks symmetrically arranged on the left side beam and the right side beam, the first hydraulic jacks and the second hydrau- lic jacks respectively apply different top and lateral stress boundary conditions, and channel steels are symmetrically mounted on the left side beam and the right side beam of the similar ex- perimental material filling groove of single loading device close to the base in a front-back manner.
Test processes:
Step 1, paving similar experiment materials in a similar ex- periment material filling groove of one or two loading devices in a layered manner.
Step 2, after the similar experiment materials are air-dried, respectively applying different stress boundary conditions by vir- tue of hydraulic servo control loading systems at the top and two sides of the one or two loading devices.
Step 3, performing a nonlinear control loading test on slope engineering excavation or coal mining and other planar similar ma- terial models by adopting the single loading device, or performing nonlinear control loading test research on the three-dimensional effect of the tunnel engineering excavation and supporting process by adopting the two loading devices.
The combined multifunctional servo control loading similar simulation experiment table disclosed by The present disclosure has the beneficial effects as follows: by virtue of the single loading device of the test table, the nonlinear control loading test on the slope engineering excavation or coal mining and other planar similar material models can be realized under the nonlinear stress boundary conditions, or the nonlinear control loading test research on the three-dimensional effect of the tunnel engineering excavation and supporting process can be realized under the non- linear stress boundary conditions by adopting the two loading de- vices.
FIG. 1 is a front view of the present disclosure.
FIG. 2 is a left view of FIG. 1.
FIG. 3 is a top view of FIG 1.
FIG. 4 is a structural schematic view of a single loading frame in FIG. 1.
The present disclosure is further described in conjunction with the drawings and the embodiments.
Example 1
Step 1, channel steels 1-7 were symmetrically arranged on a left side beam 1-2 and a right side beam 1-2 of a similar experi- ment material filling groove 1-4 of a single loading device close to a base 1-1 in a front-back manner; after fixing bolts 1-8 were fastened, similar experiment materials were paved in a space formed by the channel steels 1-7 and a loading frame in a layered mode until the space was full; and the channel steels were addi- tionally arranged and the similar experiment materials were paved in the layered mode along the left side beam 1-2 and the right side beam 1-2 from bottom to top in sequence until the channel steels and the similar experiment materials reached the lower edge of a top beam 1-3.
Step 2, after the similar materials were air-dried, eight in- dependent hydraulic jacks 1-5 arranged on the top beam 1-3 of the single loading device and twelve independent hydraulic jacks 1-6 symmetrically arranged on the left and right side beams 1-2 were used according to engineering practice to respectively apply dif- ferent top and lateral stress boundary conditions (the left side beam, the right side beam and the top beam were connected by the bolts 1-8). And
Step 3, the channel steels in front of the single loading de- vice were detached; deformation monitoring points were arranged; and a nonlinear control loading test of planar similar material models for slope engineering excavation or coal mining, etc. was finished by using a hydraulic servo control system of the single loading device.
Example 2
Step 1, channel steels 1-7 were symmetrically arranged on a left side beam 1-2 and a right side beam 1-2 of similar experiment material filling grooves 1-4 of two loading devices close to a base 1-1 in a front-back mode; after fixing bolts 1-8 were fas- tened, similar experiment materials were paved in a space formed by the channel steels 1-7 and a loading frame in a layered mode until the space was full; and then the channel steels were addi- tionally arranged and the similar experiment materials were paved in the layered mode along the left side beam 1-2 and the right side beam 1-2 from bottom to top in sequence until the channel 5 steels and the similar experiment materials reached the lower edge of a top beam 1-3.
Step 2, after the similar materials were air-dried, the chan- nel steels on two opposite sides of the two loading devices were respectively detached, and the two loading devices were combined in a butting manner. According to engineering practice, 16 inde- pendent hydraulic jacks 1-5 arranged on the top beam 1-3 of the two loading devices and 24 independent hydraulic jacks 1-6 symmet- rically arranged on the left and right side beams 1-2 were used to respectively apply different top and lateral stress boundary con- ditions. And
Step 3, the channel steels in front of the combined two load- ing devices were detached, deformation monitoring points were ar- ranged, and the nonlinear control loading test research of a three-dimensional effect in the tunnel engineering excavation and supporting process was finished by using hydraulic servo control systems of the two loading devices.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2030650A NL2030650B1 (en) | 2022-01-21 | 2022-01-21 | Combined multifunctional servo control loading similar simultation experiment table and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2030650A NL2030650B1 (en) | 2022-01-21 | 2022-01-21 | Combined multifunctional servo control loading similar simultation experiment table and test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2030650B1 true NL2030650B1 (en) | 2023-08-01 |
Family
ID=87474901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2030650A NL2030650B1 (en) | 2022-01-21 | 2022-01-21 | Combined multifunctional servo control loading similar simultation experiment table and test method |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL2030650B1 (en) |
-
2022
- 2022-01-21 NL NL2030650A patent/NL2030650B1/en active
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