CN112710287A - Large-section DCD method monitoring measurement point distribution method - Google Patents
Large-section DCD method monitoring measurement point distribution method Download PDFInfo
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- CN112710287A CN112710287A CN202011447636.2A CN202011447636A CN112710287A CN 112710287 A CN112710287 A CN 112710287A CN 202011447636 A CN202011447636 A CN 202011447636A CN 112710287 A CN112710287 A CN 112710287A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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Abstract
The invention relates to the technical field of civil engineering, in particular to a method for monitoring distribution of measuring points by a large-section DCD method, which comprises the following steps of S1, finishing the manufacture of a monitoring part; s2, laying monitoring pieces at the point laying positions of the tunnel; and S3, arranging the measuring device on the monitoring piece. According to the large-section DCD method monitoring and measuring point distribution method, the monitoring control piece is arranged at the point distribution position of the tunnel, the measuring device is arranged on the monitoring control piece, the tunnel is monitored and measured through the combination of the monitoring control piece and the monitoring piece, the monitoring control piece cannot be shielded by the rib-shaped primary support, the monitoring piece can effectively measure, and the continuity of measured data can be guaranteed.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a method for monitoring measurement point distribution by a large-section DCD method.
Background
Tunnel monitoring measuring points are generally arranged behind surrounding rock spraying primary support concrete, 2 temporary primary supports are arranged in the construction process of a DCD method, and the spraying and mixing of the primary supports in the construction process are often not full under the drive of various factors, so that a rib-shaped primary support state is formed. In this state, the monitoring quantity measuring point is shielded by the rib-shaped primary support, so that the monitoring quantity measuring point cannot be effectively measured, and the continuity of the monitoring measurement data is difficult to guarantee.
In summary, the conventional tunnel monitoring measurement point cannot effectively measure, and the continuity of monitoring measurement data is difficult to guarantee.
Disclosure of Invention
One of the technical problems to be solved by the invention is as follows: the existing tunnel monitoring measurement point can not effectively measure, and the continuity of monitoring measurement data is difficult to guarantee.
(II) technical scheme
In order to solve the technical problem, the invention provides a method for monitoring measurement point distribution by a large-section DCD method, which comprises the following steps:
s1, completing the manufacture of the monitoring part;
s2, laying monitoring pieces at the point laying positions of the tunnel;
and S3, arranging a measuring device on the monitoring piece.
According to an embodiment of the present invention, the step S3 further includes:
and S4, when the initial spraying is carried out on the distribution point of the tunnel, arranging a protection device on the monitoring piece, and removing the protection device after the initial spraying is finished.
According to an embodiment of the present invention, in S4, a PVC sleeve is disposed outside the monitoring member as a protection device, and the PVC sleeve is cut after the initial spraying is finished.
According to an embodiment of the present invention, in S1, the monitoring element includes a steel bar, a base and a reflective sticker, the base is disposed at an end of the steel bar, and the reflective sticker is disposed on the base, so as to complete the manufacturing of the monitoring element.
According to an embodiment of the present invention, the step of S2 includes the following steps:
drilling and cleaning holes by an electric drill at the point distribution position of the tunnel;
and arranging an anchoring agent in the hole, arranging the reinforcing steel bar in the hole, and positioning the base outside the hole.
According to one embodiment of the invention, the reinforcement is provided with a thread, and the anchoring agent is located between the thread and the hole.
According to an embodiment of the present invention, in S2, a steel arch is disposed in the tunnel, and the monitoring unit is disposed on the steel arch.
In S3, the measuring device is a total station according to an embodiment of the present invention.
The invention has the beneficial effects that: the monitoring control piece is arranged at the point distribution position of the tunnel, the measuring device is arranged on the monitoring control piece, the tunnel is monitored and measured through the combination of the monitoring control piece and the monitoring piece, the rib-shaped primary support cannot shield the monitoring control piece, the monitoring piece can effectively measure, and the continuity of measured data can be guaranteed.
Drawings
The advantages of the above and/or additional aspects of the present invention will become apparent and readily appreciated from the following description of the embodiments taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for monitoring distribution of measurement points by a large-section DCD method provided by the present application;
FIG. 2 is a schematic structural diagram of a preliminary support (rib shape) in the large-section DCD method monitoring measurement point distribution method provided by the present application;
fig. 3 is a schematic structural diagram of a monitoring member and a primary support in the large-section DCD method for monitoring the distribution of measurement points provided by the present application;
fig. 4 is a schematic structural diagram of a monitoring element in the method for monitoring distribution of measurement points by using the large-section DCD method provided by the present application.
The reference numbers are as follows: 1. primary support, 2, steel arch, 3, monitoring piece, 31, reinforcing steel bar, 32, PVC sleeve, 33, base, 34 and reflective sticker.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
As shown in fig. 1 to 4, the present invention provides a method for monitoring distribution of measurement points by a large-section DCD method, which comprises the following steps:
s1, completing the manufacture of the monitoring part 3;
s2, laying a monitoring control 3 at the point laying position of the tunnel;
s3, the measuring device is set on the monitoring piece 3.
Specifically, the length of the monitoring part is estimated according to a design drawing and the field condition, a longer monitoring part 3 is manufactured, and the rib-shaped primary support 1 is prevented from shielding the monitoring part 3.
The tunnel is monitored and measured through the combination of the monitoring part 3 and the monitoring part 3, the rib-shaped primary support 1 cannot shield the monitoring part 3, the monitoring part 3 can effectively measure, and the continuity of measured data can be guaranteed.
According to one embodiment of the present invention, in S2, the steel arch 2 is installed in the tunnel, and the monitoring member 3 is installed on the steel arch 2.
In this embodiment, the distribution point of the tunnel is located on the steel arch 2, a hole is arranged on the steel arch 2, and the monitoring part 3 is installed. A primary support 1 is arranged outside the steel arch 2, and a monitoring piece 3 penetrates through the primary support 1 and is arranged on a hole of the steel arch 2.
The depth of the hole is not less than 20cm, so that the monitoring part 3 is more stably fixed in the hole.
According to an embodiment of the present invention, S3 further includes:
and S4, when the initial spraying is carried out on the distribution point of the tunnel, arranging a protection device on the monitoring piece 3, and removing the protection device after the initial spraying is finished.
In this embodiment, a protection device is provided to protect the measuring device and prevent damage to the measuring device when the preliminary bracing 1 is ejected. And after the concrete spraying operation is finished, removing the protection device and carrying out initial data acquisition.
According to an embodiment of the present invention, in S1, the monitoring member 3 includes a reinforcing bar 31, a base 33 and a reflective sticker 34, the base 33 is disposed at an end of the reinforcing bar 31, and the reflective sticker 34 is disposed on the base 33, thereby completing the manufacturing of the monitoring member 3.
The method is characterized in that phi 18 steel bars 31 with the length of 60CM are adopted, square bases 33 are welded at the end portions of the steel bars 31, the bases 33 are made of iron sheets or steel sheets, and light-reflecting stickers 34 are adhered to the bases 33, so that a prompt staff can install a measuring device at the positions of the light-reflecting stickers 34 conveniently.
According to an embodiment of the present invention, S2 includes the following steps:
drilling and cleaning holes by an electric drill at the point distribution position of the tunnel;
an anchoring agent is arranged in the hole, the steel bar 31 is arranged in the hole, and the base 33 is positioned outside the hole.
And vertically smashing the reinforcing steel bar 31 into the hole by using an iron hammer, and pouring an anchoring agent into the anchoring monitoring piece.
The arrangement of the anchoring agent can increase the connectivity between the reinforcing steel bar 31 and the hole, so that the measuring device can be more stably installed on the tunnel.
According to one embodiment of the invention, the reinforcement 31 is provided with a thread and the anchoring agent is located between the thread and the hole.
The provision of the thread increases the force between the anchoring agent and the hole.
According to one embodiment of the present invention, in S4, the PVC sleeve 32 is disposed outside the monitoring member 3 as a protection device, and the PVC sleeve 32 is cut after the initial injection is finished.
Notching is carried out at the distribution point position of the tunnel by taking the monitoring piece 3 as a circle center, a PVC sleeve 32 is inserted into the notch, the PVC sleeve 32 is sleeved outside the reinforcing steel bar 31 of the monitoring piece 3, and the PVC sleeve 32 is intercepted after the initial spraying is finished, so that the reflective sticker 34 is exposed. And installing a measuring device for data acquisition.
In this embodiment, if the construction unit sprays or re-sprays the concrete of the primary support 1, the monitoring member is used as the center of the circle to perform grooving (the groove depth is 5cm, the diameter is 3cm), and the PVC sleeve 32 is sleeved on the reinforcing steel bar 31 and is deeply inserted into the groove (the PVC sleeve 32 is 3cm longer than the exposed end of the monitoring point and is closed). After the primary support 1 is completed, the excess PVC casing 32 (about 5cm) is cut out to expose the reflective sticker 34, so as to achieve the effect of continuous monitoring.
In S3, the measuring device is a total station according to an embodiment of the present invention.
The total station, i.e. the total station type electronic distance measuring instrument, is a high-tech measuring instrument integrating light, machine and electricity into one body, and is a surveying and mapping instrument system integrating horizontal angle, vertical angle, distance (slant distance and flat distance) and height difference measuring functions into one body. The total station is laid for monitoring, and the total station carries out daily monitoring measurement by a non-contact method, so that the disturbance of human to a monitoring measurement point can be reduced, and the working efficiency is improved.
In the large-section DCD method monitoring measuring point arrangement method provided by the application, after primary support 1 is completed, the length of a monitoring piece is estimated according to a design drawing and a field condition, and manufacturing of a monitoring piece 3 is completed before measuring points are arranged. After the supervision part 3 is manufactured, the supervision part 3 is arranged at the position, to be arranged, of the steel arch frame 2 of the tunnel by adopting electric drill punching, hole cleaning, anchoring with an anchoring agent, hammering an iron hammer into a monitoring part, sleeving a PVC sleeve 32, sticking a light reflecting sticker 34 and the like, a high-precision total station is adopted for measurement, and data analysis can predict a final value and the change rate of each stage through regression analysis on measured data.
To sum up: according to the large-section DCD method monitoring and measuring point distribution method, the monitoring part 3 is arranged at the point distribution position of the tunnel, the measuring device is arranged on the monitoring part 3, the tunnel is monitored and measured through the combination of the monitoring part 3 and the monitoring part 3, the rib-shaped primary support 1 cannot shield the monitoring part 3, the monitoring part 3 can effectively measure, and the continuity of measured data can be guaranteed.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A large-section DCD method monitoring measurement point distribution method is characterized by comprising the following steps:
s1, completing the manufacture of the monitoring part;
s2, laying monitoring pieces at the point laying positions of the tunnel;
and S3, arranging a measuring device on the monitoring piece.
2. The method for monitoring distribution of measurement points by the large-section DCD method according to claim 1, wherein: after S3, further comprising:
and S4, when the initial spraying is carried out on the distribution point of the tunnel, arranging a protection device on the monitoring piece, and removing the protection device after the initial spraying is finished.
3. The method for monitoring distribution of measurement points by the large-section DCD method according to claim 2, wherein: and S4, arranging a PVC sleeve outside the monitoring piece as a protection device, and intercepting the PVC sleeve after the initial spraying is finished.
4. The method for monitoring distribution of measurement points by the large-section DCD method according to claim 1, wherein: in S1, the monitoring piece comprises a steel bar, a base and a light reflecting sticker, wherein the base is arranged at the end of the steel bar, and the light reflecting sticker is arranged on the base to complete the manufacturing of the monitoring piece.
5. The method for monitoring distribution of measurement points by the large-section DCD method according to claim 4, wherein: the step of S2 includes the following steps:
drilling and cleaning holes by an electric drill at the point distribution position of the tunnel;
and arranging an anchoring agent in the hole, arranging the reinforcing steel bar in the hole, and positioning the base outside the hole.
6. The method for monitoring distribution of measurement points by the large-section DCD method according to claim 5, wherein: the steel bar is provided with threads, and the anchoring agent is located between the threads and the hole.
7. The method for monitoring distribution of measurement points by the large-section DCD method according to claim 1, wherein: in the step S2, a steel arch is provided in the tunnel, and the monitoring member is provided on the steel arch.
8. The method for monitoring distribution of measurement points by the large-section DCD method according to claim 1, wherein: in S3, the measuring device is a total station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011447636.2A CN112710287A (en) | 2020-12-09 | 2020-12-09 | Large-section DCD method monitoring measurement point distribution method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011447636.2A CN112710287A (en) | 2020-12-09 | 2020-12-09 | Large-section DCD method monitoring measurement point distribution method |
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| CN112710287A true CN112710287A (en) | 2021-04-27 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202066515U (en) * | 2011-06-02 | 2011-12-07 | 中铁一局集团有限公司 | Multifunctional tunnel monitoring and measuring peg |
| CN108072363A (en) * | 2017-12-29 | 2018-05-25 | 山东大学 | A kind of Tunnel Engineering monitoring measurement measuring point protection device and installation method |
| CN110486067A (en) * | 2019-09-09 | 2019-11-22 | 中交路桥建设有限公司 | A kind of gas tunnel system anchor bolt and the safe construction method of anchor pole detection |
| CN210005007U (en) * | 2019-08-01 | 2020-01-31 | 中交隧道工程局有限公司 | tunnel optical monitoring measuring point device |
| CN211234455U (en) * | 2019-12-31 | 2020-08-11 | 中铁十局集团第二工程有限公司 | Tunnel monitoring measurement point anti-collision device |
-
2020
- 2020-12-09 CN CN202011447636.2A patent/CN112710287A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202066515U (en) * | 2011-06-02 | 2011-12-07 | 中铁一局集团有限公司 | Multifunctional tunnel monitoring and measuring peg |
| CN108072363A (en) * | 2017-12-29 | 2018-05-25 | 山东大学 | A kind of Tunnel Engineering monitoring measurement measuring point protection device and installation method |
| CN210005007U (en) * | 2019-08-01 | 2020-01-31 | 中交隧道工程局有限公司 | tunnel optical monitoring measuring point device |
| CN110486067A (en) * | 2019-09-09 | 2019-11-22 | 中交路桥建设有限公司 | A kind of gas tunnel system anchor bolt and the safe construction method of anchor pole detection |
| CN211234455U (en) * | 2019-12-31 | 2020-08-11 | 中铁十局集团第二工程有限公司 | Tunnel monitoring measurement point anti-collision device |
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Application publication date: 20210427 |
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