CN109489922A - It is a kind of for testing the experimental rig of flexible support mechanical property - Google Patents
It is a kind of for testing the experimental rig of flexible support mechanical property Download PDFInfo
- Publication number
- CN109489922A CN109489922A CN201811360001.1A CN201811360001A CN109489922A CN 109489922 A CN109489922 A CN 109489922A CN 201811360001 A CN201811360001 A CN 201811360001A CN 109489922 A CN109489922 A CN 109489922A
- Authority
- CN
- China
- Prior art keywords
- hose
- experimental rig
- support
- arc shell
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
- G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of for testing the experimental rig of flexible support mechanical property, belong to supporting roadway surrounding rock technical field, it solves the prior art and construction technology can not be compared before construction and accurately estimated, it can only temporarily be adjusted according to the actual situation in construction, lead to the problem that construction efficiency is low.For testing the experimental rig of flexible support mechanical property, including arc shell, hose, bracing wire, dynamometer, inlet valve, outlet valve, water pressure gauge and support plate；The both ends of hose are connect with inlet valve and outlet valve respectively, the both ends of support plate pass through bracing wire respectively and the both ends of arc shell connect, dynamometer is used to the vertical active support power of test hose, and water pressure gauge is set to flow inlet road, and flow inlet road is used to provide slurry to hose.The present invention realizes accurately estimating to construction technology before construction.
Description
Technical field
The present invention relates to supporting roadway surrounding rock technical fields more particularly to a kind of for testing flexible support mechanical property
Experimental rig.
Background technique
In the work progress such as underground engineering especially mine working, tunnel and Metro Thoroughfare, through frequently with rigid gold
Belong to bracket support, including U-shaped steel, flange beam stand and steel pipe concrete bracket etc..But there are construction efficiency for rigid metal bracket
Low, large labor intensity, bracket are at high cost and the disadvantages of without active support.
Filling type flexible support and its active support technology are that one kind has a safety feature, high production efficiency, the cost of material is low
New Supporting material and support technology, development prospect it is very wide.
Filling type flexible support is to complete bracket installation by concrete pump reperfusion serosity based on flexible hose
With active support country rock, the higher rigid support of intensity is formed after grout curing, maintains country rock steady in a long-term.Filling type flexibility branch
Frame there are construction efficiency it is high, labor intensity is small, supporting intensity is big, support cost is low and active support is strong the advantages that.
Different according to the type of hose, the density of the material filled in hose is different, the site operation work of hose support
Skill is also different, such as pumping pressure, lateral qualifications (temporary support bar quantity), hose mechanical property.And the prior art can not
Accurate estimation is compared to the quantity of pumping pressure, temporary support bar before carrying out site operation, can only construction when root
It is temporarily adjusted according to actual conditions, causes construction efficiency low.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide it is a kind of for testing the experimental rig of flexible support mechanical property,
Construction technology can not be compared before construction solving the prior art and accurately be estimated, it can only be in construction according to reality
Situation temporarily adjusts, and leads to the problem that construction efficiency is low.
The purpose of the present invention is mainly achieved through the following technical solutions:
The invention discloses a kind of for testing the experimental rig of flexible support mechanical property, including arc shell, hose,
Bracing wire, dynamometer, inlet valve, outlet valve, water pressure gauge and support plate；
The both ends of the hose are connect with the inlet valve and the outlet valve respectively, the both ends point of the support plate
It is not connect by the bracing wire with the both ends of the arc shell, the dynamometer is used to test the vertical of the hose and actively props up
Power is protected, the water pressure gauge is set to flow inlet road, and the flow inlet road is used to provide slurry to the hose.
On the basis of above scheme, the present invention has also done following improvement:
Further, the experimental rig further includes temporary support bar, and is detachably connected with the hose.
Further, the quantity of the temporary support bar is multiple.
Further, experimental rig of the invention further includes built-in flexible cord, and the built-in flexible cord is placed in the hose, is used to
Increase the tensile property of the hose.
Further, the both ends of the built-in flexible cord are connect with the inlet valve and the outlet valve respectively.
Further, the quantity of the hose is multiple, and the multiple hose is connected by connecting line.
Further, the inner wall of the arc shell is equipped with multiple pressure-display devices, and the multiple pressure-display device is set
It sets at the different radians of the arc shell.
Further, the experimental rig further includes the supercharging device that can increase pressure in the flow inlet.
Further, the active support power formula that α segmental arc generates are as follows:
Wherein: α is arc length, and r is the internal diameter (m) of hose, and p is slip casting pressure (Pa), and Δ r is under slip casting pressure p effect
Hose material generates strain (m), ErFor the elasticity modulus (N/m) of hose.
Further, the vertical tension F that arc shell generatesdAre as follows:
Wherein: r is the internal diameter (m) of hose, and p is slip casting pressure (Pa), and Δ r is to act on bottom hose material in slip casting pressure p
Generate strain (m), ErFor the elasticity modulus (N/m) of hose, G1For the gravity (N) of water in hose cavity, G2For the gravity of hose
(N)。
The present invention has the beneficial effect that:
(1) by increasing hydraulic pressure, the expansion that hose occurs based on being axially stretched is extended to the outside, in leading for temporary support bar
It under effect, is contacted with arc shell, record determines the tentatively molding primary condition of bracket by the registration of water pressure gauge: pumping
Pressure, lateral qualifications (temporary support bar quantity), hose mechanical property, and then determine hose support site construction technology.
(2) arc shell is connect by bracing wire with support plate, the active support power that arc shell is subject to can be transmitted to
On support plate, the vertical active support power of flexible support is tested out by dynamometer.Water pressure gauge registration and dynamometer registration are recorded, it will
Numerical value brings the mechanical relationship formula of pumping pressure Yu the vertical active support power of flexible support into, the results show that test of the invention fills
Set the empirical value measured and meet above-mentioned relation formula, then illustrate the experimental rig can for flexible support supporting performance analysis and
Design of its support provides theoretical foundation and data supporting.
(3) pressure-display device is arranged by the inner wall in arc shell, and hose is shown not by pressure-display device
With the numerical value of segmental arc active support power, in conjunction with the registration of water pressure gauge, by the number of pressure value and hose difference segmental arc active support power
Value brings the mechanical relationship formula of hose support difference segmental arc active support power into, the results show that experimental rig of the invention was measured
Empirical value meets above-mentioned relation formula, then the experimental rig can be active support performance evaluation and the design of its support of flexible support
Theoretical foundation and data supporting are provided.
(4) by setting connecting line, multiple hose supports are connected as one by connecting line, while multi rack is completed in slip casting
The common molding and active support test of hose support, analyze the requirement of different hose materials, different fillers to connecting line,
Including quantity and mechanical property, the construction technology design of flexible support supporting is determined.
(5) by the construction technology of lesser cost input test and verification flexible support, including flexible hose molding and
Active support determines the impact factor and weight coefficient of flexible hose molding and active support in conjunction with experimental rig.
(6) different hose materials, filler are tested to the construction technology shadow of flexible support by lesser cost input
It rings, is conducive to the design of its support specification for establishing hose support.
It in the present invention, can also be combined with each other between above-mentioned each technical solution, to realize more preferred assembled schemes.This
Other feature and advantage of invention will illustrate in the following description, also, certain advantages can become from specification it is aobvious and
It is clear to, or understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, claims
It is achieved and obtained in specifically noted content.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is the experimental rig schematic diagram when embodiment of the present invention is not pressurizeed；
Fig. 2 is the experimental rig schematic diagram when embodiment of the present invention is pressurizeed；
Fig. 3 is the schematic diagram that hose support of embodiment of the present invention difference segmental arc generates active support power；
Fig. 4 is the schematic diagram that arc shell of the embodiment of the present invention generates vertical tension.
Appended drawing reference:
1- arc shell；2- hose；3- bracing wire；4- dynamometer；5- inlet valve；6- outlet valve；7- water pressure gauge；8- branch
Board；9- temporary support bar；Flexible cord built in 10-；11- connecting line.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention, it is not intended to limit the scope of the present invention.
A specific embodiment of the invention, disclose it is a kind of for testing the experimental rig of flexible support mechanical property,
As shown in Figure 1, including arc shell 1, hose 2, bracing wire 3, dynamometer 4, inlet valve 5, outlet valve 6, water pressure gauge 7 and bearing
Plate 8；The both ends of hose 2 are connect with inlet valve 5 and outlet valve 6 respectively, and the both ends of support plate 8 pass through bracing wire 3 and arc respectively
The both ends of shape shell 1 connect, and dynamometer 4 is used to the vertical active support power of test hose 2, and water pressure gauge is set to flow inlet road,
Flow inlet road is used to provide slurry to hose.
When implementation, the both ends of hose 2 are respectively installed on inlet valve 5 and outlet valve 6, form hose support, it will
Two valves open simultaneously, and the position for adjusting hose 2 will manage interior bubble discharge, simultaneously close off inlet valve 5 and outlet valve 6.
Two valves are opened simultaneously, by 6 slowly closing of outlet valve, 2 internal pressure of hose is slowly increased to inlet water pressure, and hose 2 occurs
Expansion stretches, and entire hose extends to arc shell 1, and applies active support to arc shell 1.As hydraulic pressure is gradually increased,
Arc shell 1 will be forced through bracing wire 3 and be transmitted on support plate 8.After test, inlet valve 5 is closed, pressure is sealed up for safekeeping
In hose 2, hose support safety is completed, forms hose support active support, as shown in Figure 2.
Compared with prior art, the experimental rig provided in this embodiment for testing flexible support mechanical property obtains
The vertical tension that the active support power formula and arc shell that the different segmental arcs that empirical value meets flexible support generate generate is public
Formula illustrates that the experimental rig that constructs of the present invention can be used to simulate the operating conditions of flexible support construction site, so as to for
The supporting performance analysis of flexible support and design of its support provide theoretical foundation and data supporting.
Specifically, on the one hand, the present embodiment by increasing hydraulic pressure, hose 2 occur expansion based on being axially stretched to
External expansion is contacted with arc shell 1, and record passes through the registration of water pressure gauge 7, determines the tentatively molding primary condition of bracket: pumping
Pressure, lateral qualifications (temporary support bar quantity), hose mechanical property, and then determine hose support site construction technology.
On the other hand, arc shell 1 is connect by bracing wire 3 with support plate 8, the active support power that arc shell 1 is subject to can be transmitted
Onto support plate 8, the vertical active support power of flexible support is tested out by dynamometer 4.Record the registration and dynamometer of water pressure gauge 7
Numerical value is brought into the mechanical relationship formula of pumping pressure Yu the vertical active support power of flexible support, the results show that this hair by 4 registration
The empirical value that bright experimental rig is measured meets above-mentioned relation formula, then illustrates that the experimental rig can be the supporting of flexible support
Performance evaluation and design of its support provide theoretical foundation and data supporting.
Illustratively, as shown in figure 3, the active support power formula that the α segmental arc of flexible support generates are as follows:
Wherein: α is arc length, and r is the internal diameter of hose, m；P is slip casting pressure, Pa；Δ r is soft under slip casting pressure p effect
Tube material generates strain, m；ErFor the elasticity modulus of hose, N/m.
As shown in figure 4, the vertical tension F that arc shell generatesdAre as follows:
Wherein: r is the internal diameter of hose, m；P is slip casting pressure, Pa；Δ r is to act on bottom hose material in slip casting pressure p to produce
Raw strain, m；ErFor the elasticity modulus of hose, N/m；G1For the gravity of water in hose cavity, N；G2For the gravity of hose, N.
In view of in pressure process, flexible support (hose 2) understands run-off the straight, therefore, the experimental rig of the present embodiment
It further include temporary support bar 9, so that hose 2 is propped up when expansion of the generation based on being axially stretched is extended to the outside temporarily
Under the guiding role of strut 9, contacted with arc shell 1, and then prevent flexible support from tilting.
In view of test after, need to withdraw temporary support bar 9, therefore, in the present embodiment by temporary support bar 9 with it is soft
Pipe 2 is set as being detachably connected, so as to conveniently realize the installation and dismounting of temporary support bar 9.
During site operation, the arc length of arc shell 1 is generally longer (hose 2 is also longer), so, temporary support
The quantity of bar should can be more effectively prevented from flexible support inclination to be multiple, by above-mentioned design, to improve construction effect
Rate reduces labor intensity.Illustratively, the quantity of temporary support bar can be 2,3 or 5.
It is worth noting that, the material of soft casing pack can cause certain pulling force to hose in pressure process, in order to
Hose is avoided to be pulled off, the present embodiment is equipped with built-in flexible cord 10 in hose 2, to effectively enhance the tensile strength of hose.
Specifically, built-in flexible cord 10 is placed in hose 2, and both ends are connect with inlet valve 5 and outlet valve 6 respectively.
Multi rack hose support is set up in view of generally requiring in site operation, is applied to more accurately simulate flexible support
The operating conditions at work scene, the quantity of hose support is multiple in the present embodiment.Illustratively, the quantity of hose support can be
3 or more.
Different from rigid support, in work progress, hose support is very easy to run-off the straight, it is contemplated that above situation, this
The experimental rig of embodiment further includes connecting line, and multiple hose supports are connected as one by connecting line, while slip casting completion is more
The common molding and active support test of frame, analyze the requirement of different hose materials, different fillers to connecting line, including number
Amount and mechanical property determine the construction technology design of flexible support supporting.
In order to test the numerical value of different segmental arc active support power, the present embodiment is evenly arranged centainly in the inner wall of arc shell
The pressure-display device (being not drawn into figure) of quantity shows the number of hose difference segmental arc active support power by pressure-display device
Value, in conjunction with the registration of water pressure gauge, brings the numerical value of pressure value and hose difference segmental arc active support power into hose support difference arc
The mechanical relationship formula of section active support power, the results show that the empirical value that experimental rig of the invention is measured meets above-mentioned relation
Formula then illustrates that the experimental rig can provide theoretical foundation sum number for the active support performance evaluation of flexible support and design of its support
According to support.Illustratively, pressure-display device can be pressure cell.
In order to accelerate flowing of the liquid in hose, while in order to make to have certain pressure in hose, the present embodiment is set
Have supercharging device (being not drawn into figure), and supercharging device is set to water supply, slurry pipe road.Illustratively, supercharging device can
Think handlance, by handlance simulation concrete delivery pump, the pumping pressure in hose, Jin Erwei are tested out by water pressure gauge
The experimental rig provides pressure value.
Embodiment 1
The size of entire experimental rig is 1.2m × 0.5m × 1.1m, and arc shell 1 is 3mm plank, and hose 2 is 1.4m's
32mmPVC steel wire tube, bracing wire 3 are 2mm wirerope, and dynamometer 4 is the human electronic weigher of beauty, and inlet valve 5 and outlet valve 6 are
32mm flat mouth PVC ball valve, water pressure gauge 7 are red flag board (0~1MPa) Y-60 pressure gauge, and support plate 8 is 1.2m × 0.5m × 0.02m
Plank, temporary support bar 9 are 0.5m × 0.07m × 0.03m, the elasticity modulus 766.9N/m of PVC steel wire tube, and built-in flexible cord 10 is
High tensile flexible cord, the specially wirerope of 4mm, handlance are 25kg manual pressure test pump.The experimental rig of the present embodiment is assumed
There are 3 frame hose supports, 3 frame hose supports are connected by connecting line 11.Experimental data is shown in Table 1.
1 experimental data of table
By taking 0.26MPa as an example, analyze in different radian bottom hose bracket FwNumerical value, be shown in Table 2.
The F of the different segmental arcs of table 2wValue
| Bracket radian | Active support power Fw/N |
| π/4 | 118.1 |
| π/2 | 236.2 |
| π | 472.4 |
By theoretical calculation and experimental data comparative analysis, experimental result is slightly less than the calculated results, and main cause can
It can be the frictional force between PVC steel wire tube and temporary support bar and arc shell, while with the increase of pressure, PVC steel wire tube
Slightly extend.The difference of above-mentioned experimental data and theoretical calculation demonstrates experimental rig of the invention in reasonable range
Reasonability and validity.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of for testing the experimental rig of flexible support mechanical property, which is characterized in that including arc shell, hose, drawing
Line, dynamometer, inlet valve, outlet valve, water pressure gauge and support plate；
The both ends of the hose are connect with the inlet valve and the outlet valve respectively, and the both ends of the support plate lead to respectively
It crosses the bracing wire to connect with the both ends of the arc shell, the dynamometer is used to test the vertical active support of the hose
Power, the water pressure gauge are set to flow inlet road, and the flow inlet road is used to provide slurry to the hose.
2. experimental rig according to claim 1, which is characterized in that the experimental rig further includes temporary support bar, and
It is detachably connected with the hose.
3. experimental rig according to claim 2, which is characterized in that the quantity of the temporary support bar is multiple.
4. experimental rig according to claim 1, which is characterized in that further include built-in flexible cord, the built-in flexible cord is placed in
In the hose, for increasing the tensile property of the hose.
5. experimental rig according to claim 4, which is characterized in that the both ends of the built-in flexible cord respectively with the entrance
Valve is connected with the outlet valve.
6. experimental rig according to claim 1, which is characterized in that the quantity of the hose be it is multiple, it is the multiple soft
Pipe is connected by connecting line.
7. experimental rig according to claim 1, which is characterized in that the inner wall of the arc shell is aobvious equipped with multiple pressure
Showing device, the multiple pressure-display device are arranged at the different radians of the arc shell.
8. experimental rig according to claim 1, which is characterized in that the experimental rig further includes that can increase the confession
Starch the supercharging device of overpressure.
9. experimental rig described in -8 according to claim 1, which is characterized in that the active support power formula that α segmental arc generates are as follows:
Wherein: α is arc length, and r is the internal diameter of hose, m；P is slip casting pressure, Pa；Δ r is to act on bottom hose material in slip casting pressure p
Material generates strain, m；ErFor the elasticity modulus of hose, N/m.
10. experimental rig according to claim 1-8, which is characterized in that the vertical tension F that arc shell generatesd
Are as follows:
Wherein: r is the internal diameter of hose, m；P is slip casting pressure, Pa；Δ r is to act on the generation of bottom hose material in slip casting pressure p to answer
Become, m；ErFor the elasticity modulus of hose, N/m；G1For the gravity of water in hose cavity, N；G2For the gravity of hose, N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360001.1A CN109489922B (en) | 2018-11-15 | 2018-11-15 | Test device for testing mechanical property of flexible support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360001.1A CN109489922B (en) | 2018-11-15 | 2018-11-15 | Test device for testing mechanical property of flexible support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109489922A true CN109489922A (en) | 2019-03-19 |
| CN109489922B CN109489922B (en) | 2021-01-01 |
Family
ID=65695019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811360001.1A Expired - Fee Related CN109489922B (en) | 2018-11-15 | 2018-11-15 | Test device for testing mechanical property of flexible support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109489922B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2729023A1 (en) * | 1977-06-28 | 1979-01-18 | Orenstein & Koppel Ag | Fork lift truck test jig - has frame to apply stress to forks using hydraulic jack and has clamps welded to lower struts |
| EP0187784B1 (en) * | 1984-07-10 | 1993-03-17 | MAIER, Wolfgang, Dr.-Ing. | Testing device for bar-like elements, particularly a framework segment carrying an engineering construction |
| CN103174444A (en) * | 2013-02-26 | 2013-06-26 | 中国矿业大学(北京) | Support method and support structure for soft coal/ rock stratum alley |
| CN203655320U (en) * | 2013-12-27 | 2014-06-18 | 山东科技大学 | Force measuring forepoling bar for temporary support of roadway driving working face |
| CN203849027U (en) * | 2014-02-25 | 2014-09-24 | 山东大学 | Large-scale arch type flexible uniform distribution loading tunnel support model test system |
| CN104061008A (en) * | 2014-06-11 | 2014-09-24 | 李学彬 | Underground perfusion type flexible support and construction method thereof |
| CN205297613U (en) * | 2015-12-22 | 2016-06-08 | 山东科技大学 | Formula temporary support support is moved certainly in colliery headwork face in pit |
| CN105697032A (en) * | 2016-03-04 | 2016-06-22 | 李学彬 | Support method |
| CN105781596A (en) * | 2016-03-04 | 2016-07-20 | 李学彬 | Flexible support and supporting method |
| CN106353120A (en) * | 2016-09-06 | 2017-01-25 | 中国水利水电科学研究院 | Test device and test method capable of simulating water pressure in tunnel |
| CN107356381A (en) * | 2017-05-16 | 2017-11-17 | 华北水利水电大学 | A kind of Geotechnical Engineering supporting construction model test apparatus and its test method |
| CN207051116U (en) * | 2017-08-04 | 2018-02-27 | 河南理工大学 | A kind of mine support material mechanical performance comprehensive test device |
| CN107941620A (en) * | 2017-11-16 | 2018-04-20 | 山东建筑大学 | Underground engineering bolt-mesh-spurting supporting structural mechanical property test evaluation device and method |
| CN108797603A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of protection network and liquid nitrogen frozen soil wall composite supporting construction and its construction method |
-
2018
- 2018-11-15 CN CN201811360001.1A patent/CN109489922B/en not_active Expired - Fee Related
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2729023A1 (en) * | 1977-06-28 | 1979-01-18 | Orenstein & Koppel Ag | Fork lift truck test jig - has frame to apply stress to forks using hydraulic jack and has clamps welded to lower struts |
| EP0187784B1 (en) * | 1984-07-10 | 1993-03-17 | MAIER, Wolfgang, Dr.-Ing. | Testing device for bar-like elements, particularly a framework segment carrying an engineering construction |
| CN103174444A (en) * | 2013-02-26 | 2013-06-26 | 中国矿业大学(北京) | Support method and support structure for soft coal/ rock stratum alley |
| CN203655320U (en) * | 2013-12-27 | 2014-06-18 | 山东科技大学 | Force measuring forepoling bar for temporary support of roadway driving working face |
| CN203849027U (en) * | 2014-02-25 | 2014-09-24 | 山东大学 | Large-scale arch type flexible uniform distribution loading tunnel support model test system |
| CN104061008A (en) * | 2014-06-11 | 2014-09-24 | 李学彬 | Underground perfusion type flexible support and construction method thereof |
| CN205297613U (en) * | 2015-12-22 | 2016-06-08 | 山东科技大学 | Formula temporary support support is moved certainly in colliery headwork face in pit |
| CN105697032A (en) * | 2016-03-04 | 2016-06-22 | 李学彬 | Support method |
| CN105781596A (en) * | 2016-03-04 | 2016-07-20 | 李学彬 | Flexible support and supporting method |
| CN106353120A (en) * | 2016-09-06 | 2017-01-25 | 中国水利水电科学研究院 | Test device and test method capable of simulating water pressure in tunnel |
| CN107356381A (en) * | 2017-05-16 | 2017-11-17 | 华北水利水电大学 | A kind of Geotechnical Engineering supporting construction model test apparatus and its test method |
| CN207051116U (en) * | 2017-08-04 | 2018-02-27 | 河南理工大学 | A kind of mine support material mechanical performance comprehensive test device |
| CN107941620A (en) * | 2017-11-16 | 2018-04-20 | 山东建筑大学 | Underground engineering bolt-mesh-spurting supporting structural mechanical property test evaluation device and method |
| CN108797603A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of protection network and liquid nitrogen frozen soil wall composite supporting construction and its construction method |
Non-Patent Citations (2)
| Title |
|---|
| 沈才华 等: "钢拱架柔性支撑稳定性预测判别方法探讨", 《土木工程学报》 * |
| 高琨鹏 等: "大埋深软岩煤矿运输大巷支护优化设计", 《煤炭技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109489922B (en) | 2021-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107831073A (en) | Shield-tunneling construction synchronous grouting experimental rig and test method | |
| CN107034877B (en) | Combine post jacking device and its construction method in pile end stake side | |
| CN106706416A (en) | Test device capable of simulating basement bottom plate stress under effect of pressure water and use method thereof | |
| CN206458954U (en) | A kind of rubber pneumatic bag device for water blockoff in underground piping | |
| CN110424448A (en) | A kind of underground pipes road subsidence monitoring compensation system and method | |
| CN108252340A (en) | Measure the device and test method of the limited retaining wall pressure of banketing of different displacement models | |
| WO2020119019A1 (en) | Anchor rod length determination method based on monitoring of roof rock stratum horizontal extrusion force | |
| CN101982747B (en) | Method for calibrating synchronous grouting quantity and grouting pressure of shield | |
| CN108956940B (en) | Physical model test equipment for simulating tunnel excavation and method thereof | |
| CN206036390U (en) | Pipeline rising -falling tone is put by paper -back edition | |
| CN112485125B (en) | Tunnel model test device and method capable of controlling soil loss rate | |
| CN105568868A (en) | Suspension pouring construction method for box girder hanging basket | |
| CN104990659A (en) | Expansion soil area slurry balance shield tunnel tunnel-face expansion force test device | |
| CN109736779A (en) | A kind of pressure break radius measurement method of this coal seam hydraulic fracture | |
| CN206709891U (en) | A kind of laboratory testing rig of underground drip irrigation system clogging against negative pressure | |
| CN109489922A (en) | It is a kind of for testing the experimental rig of flexible support mechanical property | |
| CN107687958A (en) | Desert area roof is caving and gas pipeline cooperative transformation physical simulating device and method | |
| CN210719589U (en) | Pipeline pressure testing device | |
| CN110260166A (en) | A kind of underground piping air tightness checking device and its application method | |
| CN205506571U (en) | Ground water level dynamic change's foundation ditch model test device can simulate | |
| CN110306976B (en) | Inert gas injection control annular pressure experiment device and method | |
| CN206190299U (en) | Flexible experimental system of consolidating of working face rib | |
| CN108918254B (en) | Test device and method for simulating initial stress of subway shield tunnel segment | |
| CN216788423U (en) | Multifunctional reduced-scale shield model free of shield machine model | |
| CN204422109U (en) | Device for monitoring concrete stress |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210101 Termination date: 20211115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |