KR101574727B1 - protection housing for crown settlement and target displacement measuring convergence - Google Patents

Abstract

According to the present invention, in order to measure the crown settlement and convergence of a tunnel after a drilling construction of the tunnel, a protection housing coupled to an anchor core embedded in a position of the tunnel where crown settlement and convergence are measured to protect a target for crown settlement and convergence measurements comprises: a body part communicated with a tunnel having one end coupled to the anchor core; and a target part inserted inside the body part to be inserted in or to protrude from the body part. Thus, the target part protrudes to the outside of the body part in the crown settlement and convergence measurement. The present invention protects the target from fragments of rocks in the blasting and excavation works of the tunnel by inserting the target part inside the body part and precisely and easily measures the convergence by making the target part protrude from the body part using an elastic member to expose the target to the outside when a cover is removed.

Description

[0001] The present invention relates to a protective housing for crown settlement and target displacement measuring convergence,

More particularly, the present invention relates to a target protective housing for measuring under-floor settlement and internal displacement, and more particularly, it relates to a target protective housing for preventing damage or destruction of a target due to blasting or excavation, And more particularly, to a target protection housing for measuring under-ceiling settlement and eccentric displacement which can be precisely measured.

In general, the information obtained from preliminary ground survey due to the specificity of the tunnel as a function of time and excavation surface distance is limited due to weakly altered strength of rock mass after excavation. Since the generated stress and the ground strength are changed by the construction method of the excavation method and support, it is necessary to clearly measure the behavior characteristics of the ground according to the construction.

In the case of general tunnel excavation work, after the rock is excavated to form a pavement, it is used for rock type such as weathered rock, soft rock, and light rock to prevent the collapse of the joint surface formed on the rock surface inside the pavement and to stabilize the ground. In this case, it is possible to secure the construction safely by measuring the displacement of the tunnel and the displacement of the tunnel, and reflecting the result in the construction.

A typical method is to attach a target having a reflector plate in a tunnel to a tunnel, measure the velocity of a light beam reflected from the target by emitting a laser beam to grasp the length (distance) of the tunnel, This is a method to grasp the subsidence and displacement of the inside of the tunnel.

Conventionally, an anchor device for measurement of internal displacement and ground displacement of a tunnel is formed integrally with a ground sheet, and since the length of the anchor is constant, it is inconvenient that it can not be appropriately used according to the rock of the inner wall of the tunnel.

In addition, when installed on the tunnel surface, there is a problem that the target is damaged due to the collision with the scattered fragments due to the rock blasting, so that the initial value of the inside of the tunnel can not be measured. In addition, There was a problem of breakage.

Korean Registered Patent Publication No. 0230890 Korean Patent Registration No. 0284122

It is an object of the present invention, which is devised to solve the problems described above, to provide a method of inserting a target portion into a body portion so that a target can be protected from rock debris during a blasting or drilling operation of a tunnel, The present invention is intended to provide a target protection housing for ceiling settlement and eccentric displacement measurement, which can accurately and easily measure the internal displacement as the target portion is protruded from the body portion and the target is exposed to the outside.

It is another object of the present invention to provide a method of fixing a target in a state in which a target is protruded to the outside because the target of the target portion can be protruded to the outside by the elastic member even if the anchor iron core is located at various positions such as the top, So as to provide a convenient target housing for measuring the displacement of the ceiling and the displacement of the inside.

It is also an object of the present invention to provide a target protection housing for preventing the lid from being lost by coupling the lid and the body with the connection part, and for easily measuring the ceiling settlement and the displacement measurement.

According to an aspect of the present invention to achieve the above object, there is provided an apparatus for measuring an under-set and an under-displacement of a tunnel after a tunnel is turned, And a protrusion formed on an inner surface of the anchor iron core, the protector being connected to the anchor iron core and communicating with the tunnel; And a target portion inserted into the body portion and inserted or protrudingly inserted into the other end of the body portion. The target portion is protruded to the outside of the body portion when measuring the undercut and eccentric displacement, do.

An inner member having a through-hole formed in an inner side thereof and having a guide groove formed in a wall of the through-hole; And an outer member having one side coupled to the outer peripheral surface of the inner member and the other side opened.

The body may have a nut coupled to an end of an inner member, which is opposite to a direction in which the inner member is engaged with the outer member, and is coupled to the anchor core by male and female engagement.

And the target portion includes: a support portion inserted into the inner member; A guide protrusion protruding from an outer circumferential surface of the support portion and guiding the support portion along the guide groove from the inside of the inner member; And a target formed at an outer end of the support portion.

The target portion may further include an elastic member provided inside the inner member and elastically supporting an inner end of the support portion, and an insertion groove into which the elastic member is inserted is formed at an inner end of the support portion. do.

The guide groove has a slot formed in the longitudinal direction of the inner member and a stopper groove formed in the circumferential direction of the inner member so as to be bent at one end of the slot, Is guided to be inserted into or protruded to the inside of the inner member, and guided along the stopper groove to be inserted and fixed in the inner member.

When the guide protrusion is guided along the stopper groove and is inserted into the engaging groove, the guide groove is formed at the end of the stopper groove so as to be recessed in the other direction of the slot, And is fixed without being rotated.

And the guide groove is formed in an overlapping portion where the inner member and the outer member overlap and are coupled by the outer member.

The lid further includes a lid provided at the other end opened to the outer member so that the target is accommodated and stored in the inner pipe and the outer member.

And a connection part connecting the lid and the outer member to each other, wherein the connection part is detachably coupled to a link formed on an outer surface of the outer member, the link member being coupled to a ring formed on an outer surface of the lid, And an engaging portion coupled to an end of the connecting member, wherein the lid is prevented from being lost.

As described above, according to the present invention, the target can be protected from the rock fragments by blasting or drilling the tunnel by inserting the target part into the body part. When the lid is removed, the target part is protruded from the body part by the elastic member It is possible to provide a target protection housing for under-floor settlement and eccentric displacement measurement that can precisely and easily measure the internal displacement as the target is exposed to the outside.

According to another aspect of the present invention, there is provided a target protective housing for measuring a ceiling settlement and an internal displacement, wherein the user does not need to fix the target in a protruded state.

It is also an object of the present invention to provide a target protection housing for preventing the lid from being lost by coupling the lid and the body with the connection part, and for easily measuring the ceiling settlement and the displacement measurement.

FIG. 1 is a front view showing a target portion of a target protective housing for cephalometric settlement measurement and eccentric displacement measurement according to a preferred embodiment of the present invention when the target portion is inserted into the body portion. FIG.
FIG. 2 is a front view showing a target portion of a target protective housing for ceiling settlement and eccentric displacement measurement according to a preferred embodiment of the present invention protruding from a body portion. FIG.
3 and 4 are exploded cross-sectional views illustrating a target protection housing for underground settlement and eccentric displacement measurement according to a preferred embodiment of the present invention.
FIGS. 5 and 6 are views showing a target protection housing for underground settlement and eccentric displacement measurement according to a preferred embodiment of the present invention.
FIG. 7 is a cross-sectional view illustrating a coupling relationship between a body portion and a target portion of a target protective housing for measurement of under-floor settlement and eccentric displacement according to a preferred embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The anchor device is to measure the displacement of the tunnel after tunnel construction.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings for explaining a target protection housing for ceiling settlement and eccentric displacement measurement according to embodiments of the present invention.

FIG. 1 is a front view showing a target portion of a target protective housing for cephalometric settlement measurement and eccentric displacement measurement according to a preferred embodiment of the present invention in a state in which the target portion is inserted into the body portion. FIG. FIG. 2 is a front view showing a target portion of a target protective housing for ceiling settlement and eccentric displacement measurement according to a preferred embodiment of the present invention protruding from a body portion. FIG. 3 and 4 are exploded cross-sectional views illustrating a target protection housing for underground settlement and eccentric displacement measurement according to a preferred embodiment of the present invention. FIGS. 5 and 6 are views showing a target protection housing for underground settlement and eccentric displacement measurement according to a preferred embodiment of the present invention. FIG. 7 is a cross-sectional view illustrating a coupling relationship between a body portion and a target portion of a target protective housing for measurement of under-floor settlement and eccentric displacement according to a preferred embodiment of the present invention.

1 to 7, in order to measure the displacement of the tunnel after tunneling, the target protective housing for ceiling settlement and eccentric displacement measurement according to the present invention includes an anchor And is coupled to the iron core.

A protective housing for protecting a target for underground settlement and eccentric displacement measurement according to the present invention includes a body portion 120 and a target portion 130.

One end of the body part 120 is coupled with the anchor iron core 110 and communicates with the tunnel.

The body portion 120 includes an inner member 122 and an outer member 124.

The inner member 122 is hermetically coupled to the anchor iron core 110, and the through hole 123 is formed in the inner side.

At this time, a guide groove 126 is formed in the wall of the inner through hole 123 of the inner member 122.

Here, the guide groove 126 is formed with a slot 127 and a stopper groove 128.

The long holes 127 are formed in the longitudinal direction of the inner member 122.

The stopper groove 128 is formed in the circumferential direction of the inner member 122 by being bent at one end of the long hole 127.

That is, the guide groove 126 is a groove that guides the longitudinal direction and the circumferential direction of the inner member 122 so that the target portion to be described later can be inserted into the inside of the body portion 120 and fixed in the inward state.

Further, the guide groove 126 is further formed with an engagement groove 129.

The latching groove 129 is formed at the end of the stopper groove 128 so as to be concave in the other direction of the slot 127.

When the target portion to be described later is inserted and fixed into the body portion 120, the guide protrusion 134 of the target portion can be fixed so as not to protrude outward by the elastic member 138, that is, Is formed on the outer circumferential surface thereof.

The guide groove 126 is formed in the overlapping portion of the inner member 122 and the outer member 124 so as to be protected by the outer member 124.

The outer member 124 is coupled so that one side overlaps with the outer circumferential surface of the inner member 122, and the other side is opened. At this time, it is preferable that the overlapping range of the outer member 124 is larger than the length of the slot 127 of the guide groove 126.

At this time, the body 120 is coupled to the end of the inner member 122, which is opposite to the direction in which the inner member 122 is coupled with the outer member 124, 125 are mounted.

As a method of fixing the nut 125 coupled to the ends of the anchor iron core 110 and the inner member 122, the anchor iron core 110 is inserted into the point to be measured, and the grouting or resin cement And an initial value is established by fastening the fixed anchor iron core 110 and the nut 125 coupled to the end of the inner member 122.

That is, after the anchor iron core 110 is installed first, the body part 120 can be easily connected and fastened to the anchor iron core 110 by the coupling of the anchor iron core 110 and the nut 125.

The target portion 130 is inserted into the body portion 120.

At this time, the target portion 130 is inserted into or protruded from the other end of the body portion 120.

The target portion 130 also includes a support portion 132, a guide protrusion 134, and a target 136.

The support portion 132 is inserted into the inner member 122 to be moved in the longitudinal direction of the inner member 122 and rotated in the circumferential direction of the inner member 122.

The guide protrusion 134 protrudes from the outer peripheral surface of the support portion 132 and guides the support portion 132 along the guide groove 126 from the inside of the inner member 122.

That is, the support portion 132 is formed so that the guide protrusion 134 is guided along the slot 127 to be inserted into or out of the inner member 122, guided along the stopper groove 128, As shown in Fig. The rotation and movement of the stopper groove 128 are restricted and fixed in a state of being inserted into the inner member 122 by the engagement with the engagement groove 129 formed at the end of the stopper groove 128.

The target 136 is formed at the outer end of the support portion 132.

Accordingly, in the method of measuring the target 136, a light wave is installed at a position securing the fixed point, and the target 136 is measured for the inclination and displacement using a laser or the like. At this time, it is preferable that the fixed point is measured in a non-moving state, and it is coupled to the body part 120 integrally coupled with the anchor iron core 110 so that the target does not move, so that the eccentric displacement can be easily measured.

7, the target is slid and rotated inside the outer member 124, and the support 132 is slid and rotated inside the inner member 122 (see Equation 1 ] And [Equation (2)].

Here, A1 is the outer peripheral surface diameter of the support portion 132, A2 is the inner peripheral surface diameter of the outer member 124, and t is the height of the guide projection 134.

That is, the guide protrusion 134 inserted and guided by the guide groove 126 of the inner member 122 according to Equation (1) is disposed on the inner side of the outer member 124 surrounding the outer surface of the inner member 122 The inner member 122 can be smoothly guided when the inner member 122 is moved in the longitudinal direction and in the circumferential direction.

Here, d1 represents the inner diameter of the inner member 122.

That is, it is preferable that a clearance is formed between the inner circumferential surface of the inner member 122 and the outer circumferential surface of the support portion 132 so that the support portion 132 moving in the inner member 122 can be smoothly moved.

The target portion 130 further includes an elastic member 138.

The elastic member 138 is provided inside the inner member 122 to elastically support the inner end of the support portion 132.

At this time, an insertion groove 135 into which the elastic member 138 is inserted is formed at the inner end of the support portion 132.

In addition, the protective housing 136 for the measurement of the internal displacement according to the present invention further includes a lid 200.

The lid 200 is provided at the other end opened to the outer pipe so that the target portion 130 is accommodated and stored inside the inner pipe and the outer pipe.

At this time, the outer pipe further includes a connection part 210.

The connecting portion 210 connects the lid 200 and the outer pipe.

At this time, the connection part 210 includes the connection part 210 and the coupling part 216.

The connecting member 212 is coupled to the ring 214 formed on the outer surface of the lid 200.

The coupling part 216 is detachably coupled to the ring 214 formed on the outer surface of the outer member 124 and is coupled to the end of the coupling part 210.

That is, since the outer member 124 and the lid 200 can be attached and detached, it is possible to prevent the lid 200 from being lost.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

110: anchor iron core 120: body part
122: inner member 123: through hole
124: outer member 125: nut
126: Guide groove 127: Slot
128: Stopper groove 129: Locking groove
130: target portion 132:
134: guide projection 135: insertion groove
136: target 138: elastic member
200: lid 210: connection
212: connecting member 214:
216:

Claims (11)

In order to measure the subsidence and displacement of the tunnel after the tunnel construction, it is connected to the anchor iron core which is placed in the position to measure the subsidence and displacement of the inside of the tunnel, and protects the target for underground settlement and eccentric displacement measurement. In the housing,
A body portion coupled to the anchor iron core at one end thereof and communicating with the tunnel; And
And a target portion inserted into the body portion and inserted or protruded into the other end of the body portion,
Wherein the target portion is protruded to the outside of the body portion when the ceiling settlement and the internal displacement are measured,
The body portion
An inner member coupled to the anchor core in an arcuate manner and having a through hole formed on the inner side thereof and a guide groove formed on the wall of the through hole;
And an outer member, one side of which is engaged with the outer circumferential surface of the inner member and the other side is opened,
The target portion,
A support member inserted into the inner member;
A guide protrusion protruding from an outer circumferential surface of the support portion and guiding the support portion along the guide groove from the inside of the inner member;
A target formed at an outer end of the support;
And an elastic member provided inside the inner member and elastically supporting an inner end of the support portion,
An insertion groove into which the elastic member is inserted is formed at an inner end of the support portion,
Wherein the guide groove has a slot formed in the longitudinal direction of the inner member and a stopper groove formed in the circumferential direction of the inner member by being bent at one end of the slot,
The support portion is guided along the elongated hole to be inserted into or protruded from the inner member, guided along the stopper groove and inserted and fixed in the inner member,
The guide groove may be formed with an engagement groove formed at the end of the stopper groove so as to be concave in the other direction of the long hole, and the support portion may be rotated when the guide projection is inserted along the stopper groove, And,
Wherein the guide groove is formed in an overlapping portion where the inner member and the outer member are overlapped and joined together so as to be protected by the outer member,
(1) and (2) are satisfied so that the support portion is slid and rotated inside the inner member.
[Equation 1]

&Quot; (2) "

(Where A1 is the diameter of the outer peripheral surface of the supporting portion, A2 is the inner peripheral surface diameter of the supporting portion, t is the height of the guide projection, and d1 is the inner peripheral surface diameter of the inner member).
delete [2] The apparatus of claim 1,
And a nut coupled to an end of an inner member which is opposite to a direction in which the inner member is engaged with the outer member and is coupled to the anchor core by male and female engaging.
delete delete delete delete delete The method according to claim 1,
And a lid provided at the other end of the outer member, the lid being accommodated in the inner pipe and the outer member for storing the target.
10. The method of claim 9,
And a connecting portion connecting the lid and the outer member to each other,
The connecting portion
A connecting member coupled to a ring formed on the outer surface of the lid,
And a coupling unit detachably coupled to an outer surface of the outer member and coupled to an end of the coupling member to prevent loss of the lid. .
delete

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