KR101757165B1 - Tunnel drainage systems scale adhesion measurement apparatus and method - Google Patents

Tunnel drainage systems scale adhesion measurement apparatus and method Download PDF

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KR101757165B1
KR101757165B1 KR1020160028177A KR20160028177A KR101757165B1 KR 101757165 B1 KR101757165 B1 KR 101757165B1 KR 1020160028177 A KR1020160028177 A KR 1020160028177A KR 20160028177 A KR20160028177 A KR 20160028177A KR 101757165 B1 KR101757165 B1 KR 101757165B1
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drain pipe
curing mold
steel wire
spring balance
force
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KR1020160028177A
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Korean (ko)
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김영욱
신진화
문준호
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명지대학교 산학협력단
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/06—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using mechanical means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F16/00—Drainage
    • E21F16/02—Drainage of tunnels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/02—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a helical spring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/02—Measuring coefficient of friction between materials

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
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Abstract

The present invention provides a tunnel drainage system scale adhesion force measuring device and a tunnel drainage system scale adhesion force measuring device that measures the adhesion force between a drainage facility and a scale contaminant deposit in a tunnel drain pipe to measure a degree of adhesion force, It has its purpose.
According to an aspect of the present invention, there is provided an apparatus for measuring scale adhesion of a tunnel drainage system, comprising: a drain pipe having a predetermined diameter and length; A curing mold fixedly installed in a longitudinal direction of the drain pipe; A spring balance on one side of the curing mold via a steel wire; And an electric motor fixed to the other side of the spring balance through a steel wire and having an axial force gauge.
According to another aspect of the present invention, there is provided a tunnel drainage system scale adhesion measuring method, comprising: a drain pipe having a predetermined diameter and length; A curing mold fixedly installed in a longitudinal direction of the drain pipe; A spring balance on one side of the curing mold via a steel wire; A method of evaluating a scale adhesion force using a tunnel drainage system scale adhesion force measuring device comprising an electric motor having an axial force system and fixed on the other side of the spring balance by a steel wire, step; Filling the curing mold with a precipitate and curing it to produce a test specimen; Installing the test body in a drain pipe; Connecting one end of the spring balance to the test body via a steel wire; Connecting a vibration motor to the other end of the spring balance via a steel wire; Applying a shearing force by pulling the specimen at a constant speed with a vibration motor; Measuring a shear force at a time point when shear fracture occurs at the interface of the test object by the shear force of the vibration motor.

Description

Technical Field [0001] The present invention relates to a tunnel drainage system scale adhesion apparatus and method,

The present invention relates to an apparatus and method for measuring a scale adhesion force of a tunnel drainage system, and more particularly, to a drainage tunnel drainage system that simulates the phenomenon of clogging of a drainage pipe between a drainage pipe and a scale of a drainage system, A system scale adhesion force measuring device, and a measuring method.

In general, drainage in civil engineering structures is an important factor in ensuring safety and fulfilling the original function of the structure.

Here, the above-mentioned drainage means that the water in the watershed is artificially removed from the watershed in the natural state, and the drainage system of underground tunnels and submarine tunnels is constructed below the groundwater, can do.

Particularly, one of the causes of the deterioration of the drainage system is the tunnel drain pipe clogging due to the movement of the ground particles by the groundwater flow and the chemical scaling.

The maintenance of the drainage system currently applied is a problem in that the cleaning equipment must be put in order to scratch the foreign matter directly.

Therefore, it depends on the degree of adhesion between the contaminants and the drain pipe in determining the input equipment and the cleaning water pressure, and is closely related to the cost.

It is urgently necessary to measure the adhesive force according to the pollution degree and the environmental condition.

Patent Registration No. 10-1438751 (Registered Date: Aug. 29, 2014)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a tunnel drain pipe which measures the adhesion force between drainage facilities and scale pollutant sediments, And to provide a tunnel drainage system scale adhesion force measuring device and method.

According to an aspect of the present invention, there is provided an apparatus for measuring scale adhesion of a tunnel drainage system, comprising: a drain pipe having a predetermined diameter and length; A curing mold fixedly installed in a longitudinal direction of the drain pipe; A spring balance on one side of the curing mold via a steel wire; And an electric motor fixed to the other side of the spring balance through a steel wire and having an axial force gauge.

According to another aspect of the present invention, there is provided a tunnel drainage system scale adhesion measuring method, comprising: a drain pipe having a predetermined diameter and length; A curing mold fixedly installed in a longitudinal direction of the drain pipe; A spring balance on one side of the curing mold via a steel wire; A method of evaluating a scale adhesion force using a tunnel drainage system scale adhesion force measuring device comprising an electric motor having an axial force system and fixed on the other side of the spring balance by a steel wire, step; Filling the curing mold with a precipitate and curing it to produce a test specimen; Installing the test body in a drain pipe; Connecting one end of the spring balance to the test body via a steel wire; Connecting a vibration motor to the other end of the spring balance via a steel wire; Applying a shearing force by pulling the specimen at a constant speed with a vibration motor; Measuring a shear force at a time point when shear fracture occurs at the interface of the test object by the shear force of the vibration motor.

As described above, the apparatus and method for measuring the scale adhesion force of the tunnel drainage system according to the present invention can be applied to a tunnel drainage system It is also applied to the maintenance study of the tunnel drainage system by designing and applying the measurement data in the tunnel construction by measuring the shear resistance between the drain pipe and the scale.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an apparatus for measuring a scale adhesion force of a tunnel drainage system according to the present invention,
2 is an exemplary view showing a curing mold of a tunnel drainage system scale adhesion measuring apparatus.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an apparatus for measuring scale adhesion of a tunnel drainage system according to the present invention. FIG.

As shown in this figure, the tunnel drainage system scale adhesion measuring apparatus A according to the present invention comprises: a drain pipe 100 having a constant diameter and a length; A curing mold 200 fixedly installed in the longitudinal direction of the drain pipe 100; A spring balance 300 on one side of the curing mold 200 via a steel wire 310; And an electric motor 400 fixed to the other side of the spring balance 300 via a steel wire 310 and having an axial force meter.

That is, the tunnel drainage system scale adhesion measuring apparatus A according to the present invention is an apparatus in which a drain pipe 100, a curing mold 200, a spring scale 300, and an electric motor 400 are combined with each other.

Here, the drain pipe 100 is a general upper and lower pipe.

In addition, the curing mold 200 cures the drainage pipe 100 by scaling and generates an adhesive force to simulate the clogging effect.

As shown in FIG. 2, the curing mold 200 is formed using a 3D printer. The curing mold 200 is formed in a predetermined shape. A curved surface portion 230 having a predetermined curvature is formed on the bottom surface of the opening 210 and a connecting ring 240 is formed on one side of the tubular body 210.

That is, the upper surface of the curing mold 200 is shaped like a rectangular parallelepiped cylinder 210 when viewed from above, and the lower surface thereof is formed with a curved surface portion 230 having the same shape as the drain pipe 100 to prevent the precipitate 250 from leaking And the end portion of the housing 210 is formed with a connection ring 240 for providing a shear resistance, so that the convenience of the measurement test is considered.

The opening 220 is filled with a precipitate 250 composed of calcium carbonate and cement.

The spring balance 300 is a mechanism for measuring the scale adhesion force in the water pipe 100 of the test body T using the properties of the spring.

On the other hand, the electric motor 400 is a mechanism having an axial force system.

Here, since the non-constant force of the electric motor 400 affects the scale shear resistance value, it is necessary to have a constant speed and sufficient pulling force.

At this time, the electric motor 400 slowly measures the curing mold 200 until the scale falls off the drain pipe 100.

The tunnel drainage system scale adhesion measuring apparatus A according to the present invention configured as described above is a device for testing the drainage pipe 100 and the scale adhesion force. The apparatus includes an electric motor 400 having an axial force meter, Is connected to the curing mold 200 to which the scale is attached and the other end is connected to the electric motor 400.

Hereinafter, a measurement method using the apparatus for measuring the scale adhesion force of the tunnel drainage system according to the present invention will be described.

As shown in FIG. 1, the method for measuring scale adhesion of a tunnel drainage system according to the present invention includes: a drain pipe 100 having a predetermined diameter and length; A curing mold 200 fixedly installed in the longitudinal direction of the drain pipe 100; A spring balance 300 on one side of the curing mold 200 via a steel wire 310; A method of evaluating the scale adhesion force using a tunnel drainage system scale adhesion force measuring apparatus A comprising an electric motor 400 fixed to the other side of the spring balance scale 300 via a steel wire 310 and having an axial force meter A step of fabricating a curing mold 200 having a predetermined shape; Filling the curing mold (200) with the precipitate (250) and curing the same to manufacture a test body (T); Installing the test body (T) in the drain pipe (100); Connecting one end of the spring balance (300) to the test body (T) via a steel wire (310); Connecting an electric motor (400) to the other end of the spring balance (300) via a steel wire (310); Applying a shearing force by pulling the test piece (T) at a constant speed with the electric motor (400); And measuring a shearing force at a time point when shear fracture occurs at the interface of the test body (T) due to the shearing force of the electric motor (400).

That is, the method of measuring the scale adhesion force of the tunnel drainage system according to the present invention is a method of measuring the shear resistance of the sediment caused by chemical clogging with the drain pipe 100.

Here, the curing mold 200 uses the 3D printer to manufacture the curing mold 200 so that the curing mold 200 can be applied to a purposeful drain pipe 100.

The lower part of the curing mold 200 is formed with the curved surface portion 230 like the interface with the drain pipe 100 and the precipitate 250 leaks to the outside because the curing mold 200 needs to be made to match the interface of the drain pipe 100 ≪ / RTI >

For the consistency of the data collection, it is preferable that the curing mold 200 is formed in the same shape and size. However, if the curing mold 200 is small in size, it is difficult to obtain a constant value due to the same external influence as the contraction of the precipitate 250 during the curing process.

Experimental results show that the ideal curing mold 200 has a width of 588 mm, a length of 1176 mm, a height of 350 mm, and a connecting ring 240 according to necessity.

The formed curing mold 200 is filled with a precipitate 250 made of calcium carbonate and cement to simulate the clogging phenomenon and cured in a specially manufactured curing mold 200 in a constant temperature and humidity environment.

That is, there is a difference in the composition depending on the sediment and inflow route into the tunnel depending on the white matter, white precipitate and red precipitate. The important problem for the deterioration of the drainage function and stability is that the crystals generated in the concrete carbonation process and the cement, And it is a sediment introduced into the tunnel, so calcium carbonate and cement are mainly mixed and cured.

The precipitate 250 is put into the curing mold 200 and shaken to spread well.

Then, it is put into a constant temperature and humidity chamber and cured under the same conditions.

When the curing is performed for a certain time in the constant temperature and humidity bath, scale is attached to the surface of the drain pipe (100) and clogging simulation is completed.

The cured precipitate 250 can be regarded as a whitish state of the sediment 250 flowing into the tunnel, which is pulled at a constant speed of the electric motor 400 to apply a shear force.

Then, the shear resistance generated in the specimen at the interface of the specimen is measured by the shearing force of the electric motor 400, and the adhesion is evaluated.

The method of measuring the scale adhesion force of a tunnel drainage system according to the present invention having the steps as described above is a method of measuring the scale adhesion force of a tunnel drainage system using a 3D printer to produce a scale curing mold 200 applied to a drain pipe 100, The bottom surface of the curing mold 200 is formed with a curved surface portion having the same curvature as the interface with the drain pipe 100 so that the filling material filled in the opening of the curing mold 200 leaks to the outside prevent.

Here, the curing mold 200 is preferably formed to have the same size as the curing mold 200 for the purpose of data collection consistency. When the curing mold 200 is manufactured in a small size, The value is hard to come by.

Particularly, the curing mold 200 is tested to have ideal widths of 588 mm, 1176 mm, and 350 mm in width, and the connection rings 240 are formed at one end of the curing mold 200, if necessary.

Meanwhile, the clogging phenomenon is simulated using the precipitate 250 such as calcium carbonate and cement, and the specially manufactured custom curing mold 200 is cured in a constant temperature and humidity environment.

Particularly, there is a difference in composition depending on the white precipitate, the white precipitate and the red precipitate from the sediment 250 introduced into the tunnel and the inflow path. The important problem for the deterioration and stability of the drainage function is that the crystal and the grouting filler Since the cement is a sediment (250) that flows into the tunnel together with groundwater, a certain amount of calcium carbonate and cement are mixed and cured.

Then put in the constant temperature and humidity bath and cure under the same conditions.

When the curing is performed for a certain time in the constant temperature and humidity bath, scale is attached to the surface of the drain pipe (100) and clogging simulation is completed.

The cured precipitate 250 may be regarded as a whitish state of the sediment 250 flowing into the tunnel, which is subjected to a pulling force at a constant speed of the electric motor 400.

 The electric motor 400 is pulled at a constant speed and a shearing force acts on the interface of the test piece T while pulling the cured mold 200 with the scale attached thereto.

However, the electric motor 400 should be able to satisfy a constant speed and a sufficient pulling force condition.

The shear resistance occurring at this time can be measured at the interface of the specimen T by the shear force.

The shear force of the test specimen T gradually increases and the scale cured at the interface of the drain pipe 100 reaches a point at some point. The shear force at this time is measured to measure and record the scale and the shear resistance of the drain pipe 100 .

The following graphs are graphs of changes in shear resistance when the scale shear resistance is measured by the electric motor 400 according to the present invention.

The falling process can be divided into three stages. In the first stage, the horizontal displacement and the shear resistance of the sample are linearly increasing on the surface of the drain pipe (100).

In the second step, the exponential increase is shown and the peak is taken, where the peak point is the magnitude of the adhesion between the scale and the drain pipe (100).

At the final stage, you can see the falling trend, which is the residual resistance past the peak.

It can be confirmed that the difference in residual shear resistance varies depending on the curing time and the characteristics of the sample.

Figure 112016022740400-pat00001

Figure 112016022740400-pat00002

The method of measuring the scale adhesion force of the tunnel drainage system according to the present invention having the steps as described above can be applied to the clinkering phenomenon occurring in the drainage tunnel system through the indoor experiments when it is difficult to preliminarily investigate the deterioration of the drainage system due to, And by measuring the shear resistance between the drain pipe and the scale, it is possible to apply the design to the maintenance of the tunnel drainage system in the future by designing and applying the measurement data in the tunnel construction.

The preferred embodiments described in the specification of the present invention are intended to be illustrative, not limiting, and the scope of the present invention is indicated by the appended claims, and all modifications that come within the meaning of the claims are included in the present invention. .

100: Water pipe 200: Curing mold
210: cylinder 220: opening
230: curved portion 240: connecting ring
250: sediment 300: spring scale
310: Steel wire 400: Electric motor
A: Tunnel drainage system scale adhesion measuring device
T: Test body

Claims (5)

A drain pipe (100) having a constant diameter and a length; A curing mold 200 fixedly installed in the longitudinal direction of the drain pipe 100; A spring balance 300 on one side of the curing mold 200 via a steel wire 310; An electric motor 400 fixed to the other side of the spring balance 300 via a steel wire 310 and having an axial force meter,
The curing mold 200 is formed with a cylinder 210 in a predetermined shape and an opening 220 is formed on the upper surface of the cylinder 210 so as to be inwardly inwardly from the surface and a curved surface portion 230), and a connection annulus (240) is formed on one side of the tubular body (210). delete The method according to claim 1,
Wherein the opening (220) is filled with a sediment (250) composed of calcium carbonate and cement. A drain pipe (100) having a constant diameter and a length; A curing mold 200 fixedly installed in the longitudinal direction of the drain pipe 100; A spring balance 300 on one side of the curing mold 200 via a steel wire 310; An electric motor 400 fixed to the other side of the spring balance 300 via a steel wire 310 and having an axial force meter,
The curing mold 200 is formed with a cylinder 210 in a predetermined shape and an opening 220 is formed on the upper surface of the cylinder 210 so as to be inwardly inwardly from the surface and a curved surface portion A method for evaluating a scale adhesion force using a tunnel drainage system scale adhesion measuring apparatus (A) in which a connecting ring (240) is formed on one side of the cylinder (210)
Fabricating a curing mold (200) having a predetermined shape;
Filling the curing mold (200) with the precipitate (250) and curing the same to manufacture a test body (T);
Installing the test body (T) in the drain pipe (100);
Connecting one end of the spring balance (300) to the test body (T) via a steel wire (310);
Connecting an electric motor (400) to the other end of the spring balance (300) via a steel wire (310);
Applying a shearing force by pulling the test piece (T) at a constant speed with the electric motor (400);
And measuring a shear force at a point of time when shear fracture occurs at a boundary surface of the test body (T) by a shear force of the electric motor (400).

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827958A (en) * 2018-12-21 2019-05-31 长安大学 In Karst Tunnel drainage system Crystallization Plugging simulation test device and test method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003294608A (en) 2002-04-02 2003-10-15 Hosokawa Micron Corp Particle adherence measuring apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003294608A (en) 2002-04-02 2003-10-15 Hosokawa Micron Corp Particle adherence measuring apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
신진화 외 3인, 압전필름의 진동을 활용한 터널배수재 유지관리 성능 개선, 한국산학기술학회논문지, Vol.16 No.1, [2015]
주익찬 외 4인, 터널 배수공의 재질에 따른 스케일 부착 특성에 관한 연구, 한국지반환경공학회 논문집, 제12권 제11호 2011년 11월 pp. 51~57

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827958A (en) * 2018-12-21 2019-05-31 长安大学 In Karst Tunnel drainage system Crystallization Plugging simulation test device and test method
CN109827958B (en) * 2018-12-21 2023-08-18 长安大学 Karst area tunnel drainage system crystallization blocking simulation test device and test method

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