CN113389573B - Tunnel informatization construction method - Google Patents
Tunnel informatization construction method Download PDFInfo
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- CN113389573B CN113389573B CN202110765566.3A CN202110765566A CN113389573B CN 113389573 B CN113389573 B CN 113389573B CN 202110765566 A CN202110765566 A CN 202110765566A CN 113389573 B CN113389573 B CN 113389573B
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- 238000010276 construction Methods 0.000 title claims abstract description 69
- 238000012544 monitoring process Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 38
- 238000009434 installation Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 2
- 230000001502 supplementing effect Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel informatization construction method, wherein a plurality of construction monitoring units are arranged on the outer side of a tunnel lining template; after filling, collecting the information of the cavity in the concrete through a construction monitoring unit, and judging whether the cavity affecting the concrete structure exists in the concrete or not based on the information of the cavity in the concrete; filling concrete through a working window close to the cavity on the tunnel lining template, so as to eliminate the cavity affecting the concrete structure; according to the invention, whether the cavity exists in the concrete and whether the cavity affects the structural strength of the lining concrete layer can be detected in the process of pouring the tunnel lining concrete, the defect can be made up by timely supplementing the filled concrete, and the quality of pouring the tunnel lining concrete is ensured.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a tunnel informatization construction method.
Background
Tunnel lining refers to a permanent structure that supports and maintains long-term stability and durability of a tunnel. The function is as follows: support and maintain stability of tunnels; keeping the space required by the running of the train; preventing the weathering of surrounding rock; and the influence of groundwater is relieved. Thus, tunnel liners must have sufficient strength, durability, and some resistance to freezing, penetration, and erosion.
As shown in fig. 1, a construction schematic diagram of pouring tunnel lining concrete in the prior art is shown, a plurality of tunnel lining templates 102 are supported by a template support 101 to form an arch structure, gaps are formed between the tunnel lining templates 102 and the inner wall of a tunnel, as shown in fig. 2, a plurality of working windows 103 are arranged on the tunnel lining templates 102, and concrete is injected into the working windows 103; the thickness of the tunnel lining concrete casting is large, cavities are easy to generate in the cast concrete, and the structural strength of the lining concrete layer can be influenced by the large cavities.
Disclosure of Invention
The invention provides a tunnel informatization construction method, which solves the technical problem that a large cavity exists in lining concrete pouring.
According to one aspect of the present invention, there is provided a tunnel informatization construction method, comprising the steps of:
s1, arranging a plurality of construction monitoring units on the outer side of a tunnel lining template;
the construction monitoring unit is used for detecting a cavity in the concrete filled between the tunnel lining template and the inner wall of the tunnel, and comprises a columnar support body connected with the tunnel lining template, and a plurality of distance detection units are distributed on the columnar support body; the distance detection unit can measure the distance between the columnar support body and the inner wall of the cavity of the concrete when the columnar support body is partially or completely positioned in the cavity of the concrete; the two distance detection units are symmetrically arranged on two sides of the columnar support body and respectively measure the distance between the columnar support body and the inner wall of the cavity of the concrete, and the width of the cavity of the concrete is the sum of the distances between the columnar support body and the inner wall of the cavity of the concrete, which are measured by the two distance detection units;
the two distance detection units are symmetrically arranged on two sides of the columnar support body, and each group of distance detection units can detect the width of the corresponding concrete cavity in one direction on one plane;
the plurality of groups of distance detection units on the same plane are in a same-height set, and the columnar support body is provided with a plurality of distance detection units in the same-height set along the long side direction;
s2, filling concrete between the tunnel lining template and the inner wall of the tunnel;
s3, collecting information of a cavity in the concrete through a construction monitoring unit after filling is finished, and judging whether the cavity affecting a concrete structure exists in the concrete or not based on the information of the cavity in the concrete;
as a method for judging whether or not there is a cavity affecting a concrete structure in concrete based on information of the cavity in the concrete, the following two conditions are preset: the first condition is that the width of the concrete cavity detected by more than one group of distance detection units exceeds a first width threshold value;
the second condition is that the width of the concrete cavity measured by more than one group of distance detection units in N adjacent equal-height sets on more than one construction monitoring unit exceeds a first width threshold;
judging whether the first condition and/or the second condition are met, and if the first condition and/or the second condition are met, indicating that a cavity affecting the concrete structure exists;
if neither the first condition nor the second condition is satisfied, indicating that there is no cavity affecting the concrete structure;
s4, if a cavity affecting the concrete structure exists, positioning the position of the cavity;
the method for positioning the space position comprises the following steps:
and determining a construction monitoring unit to which more than one group of distance detection units with the width exceeding a first width threshold value of the detected concrete cavity belong, and positioning the installation position of the construction monitoring unit in the tunnel lining template as the cavity position.
Determining that the installation position of a construction monitoring unit with the width exceeding a second width threshold value, measured by more than one group of distance detection units in N adjacent equal-height sets, of the concrete cavity is arranged in the tunnel lining template as the cavity position
S5, filling concrete through a working window close to the cavity on the tunnel lining template, and eliminating the cavity affecting the concrete structure.
Further, steps S3-S5 are iteratively performed after step S5 until no cavities affecting the concrete structure are present.
Further, the columnar supporting body of the construction monitoring unit is connected with a base, a hole matched with the base in a threaded mode is formed in the tunnel lining template, and the base is detachably connected with the tunnel lining template.
The construction monitoring unit is disassembled after step S5.
The invention has the beneficial effects that:
according to the invention, whether the cavity exists in the concrete and whether the cavity affects the structural strength of the lining concrete layer can be detected in the process of pouring the tunnel lining concrete, the defect can be made up by timely supplementing the filled concrete, and the quality of pouring the tunnel lining concrete is ensured.
Drawings
FIG. 1 is a schematic construction diagram of a prior art tunnel lining concrete casting;
FIG. 2 is a schematic view of a structure of a plurality of tunnel lining templates of the prior art;
FIG. 3 is a flow chart of a tunnel informatization construction method of an embodiment of the invention;
FIG. 4 is a schematic layout view of a construction monitoring unit prior to construction of an embodiment of the present invention;
FIG. 5 is a schematic view of a construction monitoring unit in concrete after construction of an embodiment of the present invention;
FIG. 6 is an enlarged view at A of FIG. 5;
fig. 7 is a schematic structural view of a construction monitoring unit employing a distance detecting unit according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a construction monitoring unit employing a power-on post according to an embodiment of the present invention.
In the figure: the construction equipment comprises a template support 101, a tunnel lining template 102, a working window 103, a construction monitoring unit 200, a columnar support 201, a distance detection unit 202, a power-on column 203, a positive terminal 204 and a secondary terminal 205.
Detailed Description
The subject matter described herein will now be discussed with reference to example embodiments. It should be appreciated that these embodiments are discussed only to enable a person skilled in the art to better understand and thereby practice the subject matter described herein, and are not limiting of the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure as set forth in the specification. Various examples may omit, replace, or add various procedures or components as desired. In addition, features described with respect to some examples may be combined in other examples as well.
As shown in fig. 3, a tunnel informatization construction method includes the following steps:
s1, arranging a plurality of construction monitoring units 200 on the outer side of a tunnel lining template 102;
the construction monitoring unit 200 is used for detecting a cavity existing in the concrete filled between the tunnel lining form 102 and the inner wall of the tunnel;
as shown in fig. 4 to 7, in an embodiment of the present invention, a specific construction monitoring unit 200 is provided, which includes a columnar support 201 connected to a tunnel lining form 102, a plurality of distance detection units 202 are distributed on the columnar support 201, and the distance detection units 202 can measure a distance between the columnar support 201 and an inner wall of a cavity of concrete when the columnar support 201 is partially or entirely located in the cavity of the concrete;
two distance detection units 202 symmetrically arranged on two sides of the columnar support 201 are in a group, each group of distance detection units 202 can detect the width of a corresponding concrete cavity in one direction on one plane, as shown in fig. 6, the two distance detection units 202 in the group respectively measure the distance Q, Z between the columnar support 201 and the inner wall of the concrete cavity, and the width d=q+z of the concrete cavity;
the plurality of groups of distance detection units 202 on the same plane are in a same height set, and the columnar support 201 is provided with a plurality of distance detection units 202 in the same height set along the long side direction;
an infrared ranging sensor or a laser ranging sensor is employed for the distance detecting unit 202 in the above-described embodiment;
as shown in fig. 8, another specific construction monitoring unit 200 is provided in an embodiment of the present invention, which includes a columnar support 201 connected to a tunnel lining template 102, a plurality of pairs of power-on columns 203 disposed perpendicular to the columnar support 201 are distributed on the columnar support 201, two power-on columns 203 in each pair of power-on columns 203 are symmetrically disposed on two sides of the columnar support 201, one end of each pair of power-on columns 203, which is far away from the columnar support 201, is provided with a positive terminal 204 and a secondary terminal 205, and a current loop is formed when the positive terminal 204 is conducted with the secondary terminal 205.
The power-on column 203 is set to a predetermined length, if both the positive terminal 204 and the secondary terminal 205 on the power-on column 203 contact the concrete, a current loop is formed by the conduction of the concrete, and if either end is positioned in the cavity and does not contact the concrete, the current loop cannot be formed;
the conductive posts 203 and the columnar supports 201 are made of insulating materials, and the positive terminals 204 and the negative terminals 205 are made of conductive materials. The centers of the columnar support 201 and the power-on column 203 are provided with holes for the passage of wires connecting the positive terminal 204 and the sub-terminal 205.
Similarly, the plurality of groups of the power-on columns 203 on the same plane are in a same-height set, and the columnar support 201 is provided with a plurality of power-on columns 203 in the same-height set along the long side direction;
s2, filling concrete between the tunnel lining template 102 and the inner wall of the tunnel;
s3, collecting information of cavities in the concrete through the construction monitoring unit 200 after filling is finished, and judging whether the cavities affecting a concrete structure exist in the concrete or not based on the information of the cavities in the concrete;
as a method for judging whether or not there is a cavity affecting a concrete structure in concrete based on information of the cavity in the concrete, the following two conditions are preset: the first condition is that the width of the concrete cavity detected by one or more sets of distance detection units 202 exceeds a first width threshold;
the second condition is that the width of the concrete cavity measured by more than one group of distance detection units 202 in N adjacent equal-height sets on more than one construction monitoring unit 200 exceeds a second width threshold, wherein N is more than or equal to 3;
the second width threshold value is smaller than the first width threshold value, and although the width of the cavity is not detected to exceed the standard at this time, a plurality of cavities exceeding the second width threshold value are detected by the distance detection units 202 along the longitudinal direction of the columnar support 201, which indicates that the cavities which affect the concrete structure are distributed along the longitudinal direction;
judging whether the first condition and/or the second condition are met, and if the first condition and/or the second condition are met, indicating that a cavity affecting the concrete structure exists;
if neither the first condition nor the second condition is satisfied, indicating that there is no cavity affecting the concrete structure;
as another method for judging whether or not there is a cavity affecting a concrete structure in concrete based on information of the cavity in concrete, the following two conditions are preset: the third condition is that the positive terminal 204 and the secondary terminal 205 of more than one pair of the power-on posts 203 are not communicated to form a loop;
the fourth condition is that the positive terminal 204 and the auxiliary terminal 205 of more than one pair of the power-on columns 203 exist in N adjacent equal-height sets on one construction monitoring unit 200, and are not communicated to form a loop;
judging whether the third condition and/or the fourth condition are met, and if the third condition and/or the fourth condition are met, indicating that a cavity affecting the concrete structure exists;
if neither the third condition nor the fourth condition is satisfied, indicating that no cavity affecting the concrete structure exists;
s4, if a cavity affecting the concrete structure exists, positioning the position of the cavity;
as a method of locating a cavity location, comprising:
determining more than one group of construction monitoring units 200 to which distance detection units 202 belong, wherein the detected width of the concrete cavity exceeds a first width threshold value, and positioning the installation position of the construction monitoring units 200 in the tunnel lining template 102 as a cavity position;
determining that more than one group of the construction monitoring units 200 with the width exceeding the first width threshold value, which is measured by the distance detection units 202, exist in N adjacent equal-height sets, and taking the installation position of the construction monitoring units 200 in the tunnel lining template 102 as a cavity position;
as another method of locating a cavity location, it includes:
determining a construction monitoring unit 200 to which a power-on column 203 which is not communicated to form a loop belongs, and positioning the installation position of the construction monitoring unit 200 in a tunnel lining template 102 as a cavity position;
the construction monitoring unit 200 which determines that more than one pair of the positive terminals 204 and the auxiliary terminals 205 of the energizing columns 203 in N adjacent equal-height sets are not communicated to form a loop is arranged at the installation position of the tunnel lining template 102 as a cavity position;
s5, filling concrete through a working window 103 close to the cavity position on the tunnel lining template 102, and eliminating the cavity affecting the concrete structure.
Steps S3-S5 may be performed iteratively after step S5 until no cavities are present that affect the concrete structure.
By the method, the cavity inside the concrete can be detected in real time when the tunnel lining concrete is poured, the cavity affecting the concrete structure can be eliminated timely, and the quality of the pouring construction of the tunnel lining concrete is ensured.
The construction monitoring unit 200 using the distance detecting unit 202 has high cost due to the need of applying a large number of sensor devices, but has high detection accuracy, and the problem of small cavity interference does not occur in the distance measuring mode, as the mode, the construction monitoring unit 200 is set to be a structure detachably connected with the tunnel lining template 102, specifically, the columnar supporting body 201 of the construction monitoring unit 200 is connected with a base, the tunnel lining template 102 is provided with a hole in threaded fit with the base, the construction monitoring unit 200 is pulled out through the threaded disassembly after casting, and then the hole of the tunnel lining template 102 is closed through a cover plate;
for the construction monitoring unit 200 adopting the electrified column, due to the simple structure and low cost, the tunnel lining template 102 can be connected in a temporary fixing mode such as gluing, and the lead holes are reserved on the tunnel lining template 102, and after the concrete is solidified, the lead is cut off to be remained in the concrete, so that the construction monitoring unit can also play a role in reinforcing a framework in the concrete.
The embodiment of the present embodiment has been described above with reference to the accompanying drawings, but the embodiment is not limited to the above-described specific implementation, which is merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the embodiment and the scope of the protection of the claims, which fall within the protection of the embodiment.
Claims (9)
1. The tunnel informatization construction method is characterized by comprising the following steps of:
s1, arranging a plurality of construction monitoring units on the outer side of a tunnel lining template;
the construction monitoring unit is used for detecting a cavity in the concrete filled between the tunnel lining template and the inner wall of the tunnel, and comprises a columnar support body connected with the tunnel lining template, and a plurality of distance detection units are distributed on the columnar support body;
the two distance detection units are symmetrically arranged on two sides of the columnar support body, and each group of distance detection units can detect the width of the corresponding concrete cavity in one direction on one plane;
the plurality of groups of distance detection units on the same plane are in a same-height set, and the columnar support body is provided with a plurality of distance detection units in the same-height set along the long side direction;
s2, filling concrete between the tunnel lining template and the inner wall of the tunnel;
s3, collecting information of a cavity in the concrete through a construction monitoring unit after filling is finished, and judging whether the cavity affecting a concrete structure exists in the concrete or not based on the information of the cavity in the concrete;
as a method for judging whether or not there is a cavity affecting a concrete structure in concrete based on information of the cavity in the concrete, the following two conditions are preset: the first condition is that the width of the concrete cavity detected by more than one group of distance detection units exceeds a first width threshold value;
the second condition is that the width of the concrete cavity measured by more than one group of distance detection units in N adjacent equal-height sets on more than one construction monitoring unit exceeds a first width threshold;
judging whether the first condition and/or the second condition are met, and if the first condition and/or the second condition are met, indicating that a cavity affecting the concrete structure exists;
if neither the first condition nor the second condition is satisfied, indicating that there is no cavity affecting the concrete structure;
s4, if a cavity affecting the concrete structure exists, positioning the position of the cavity;
s5, filling concrete through a working window close to the cavity on the tunnel lining template, and eliminating the cavity affecting the concrete structure.
2. The tunnel informationized construction method according to claim 1, wherein the distance detecting unit is capable of measuring a distance between the columnar support and an inner wall of the cavity of the concrete when the columnar support is partially or entirely located in the cavity of the concrete.
3. The tunnel informatization construction method according to claim 1, wherein the two distance detection units symmetrically arranged at both sides of the columnar support measure the distance between the columnar support and the inner wall of the cavity of the concrete, respectively, and the width of the cavity of the concrete is the sum of the distances between the columnar support and the inner wall of the cavity of the concrete measured by the two distance detection units.
4. The tunnel informationized construction method according to claim 1, wherein the distance detection unit adopts an infrared distance measurement sensor or a laser distance measurement sensor.
5. A tunnel informationized construction method according to claim 1, characterized in that steps S3-S5 are iteratively performed after step S5 until no cavities affecting the concrete structure are present.
6. The tunnel informationized construction method according to claim 1, wherein the method for positioning the space in step S4 comprises:
and determining a construction monitoring unit to which more than one group of distance detection units with the width exceeding a first width threshold value of the detected concrete cavity belong, and positioning the installation position of the construction monitoring unit in the tunnel lining template as the cavity position.
7. The tunnel informationized construction method according to claim 1, wherein the method for positioning the space in step S4 comprises:
and determining the installation positions of the construction monitoring units, which are measured by more than one group of distance detection units and have the width exceeding a second width threshold value in N adjacent equal-height sets, of the concrete cavities in the tunnel lining template as the cavity positions.
8. The tunnel informatization construction method according to claim 1, wherein the columnar support body of the construction monitoring unit is connected with a base, holes matched with threads of the base are formed in the tunnel lining template, and the base is detachably connected with the tunnel lining template.
9. The tunnel informationized construction method according to claim 8, wherein the construction monitoring unit is disassembled after step S5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110765566.3A CN113389573B (en) | 2021-07-07 | 2021-07-07 | Tunnel informatization construction method |
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| CN202110765566.3A CN113389573B (en) | 2021-07-07 | 2021-07-07 | Tunnel informatization construction method |
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| CN113389573B true CN113389573B (en) | 2023-07-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106327731A (en) * | 2016-10-19 | 2017-01-11 | 中铁隧道集团第五建筑有限公司 | Anti-void monitor for tunnel lining concrete vault |
| CN108166998A (en) * | 2017-12-27 | 2018-06-15 | 苏交科集团股份有限公司 | A kind of tunnel-liner support structure and its construction method |
| CN110080807A (en) * | 2019-06-03 | 2019-08-02 | 北京市市政四建设工程有限责任公司 | A kind of lining of tunneling Subway Tunnel big cross section stop line two new type formwork trolley |
| CN111396083A (en) * | 2019-09-29 | 2020-07-10 | 中铁隧道局集团有限公司 | Tunnel lining strip pressing mold pouring process and monitoring method for lining concrete pressure and full state thereof |
| CN111577328A (en) * | 2020-04-29 | 2020-08-25 | 中铁十二局集团有限公司 | Tunnel lining anti-void construction method |
-
2021
- 2021-07-07 CN CN202110765566.3A patent/CN113389573B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106327731A (en) * | 2016-10-19 | 2017-01-11 | 中铁隧道集团第五建筑有限公司 | Anti-void monitor for tunnel lining concrete vault |
| CN108166998A (en) * | 2017-12-27 | 2018-06-15 | 苏交科集团股份有限公司 | A kind of tunnel-liner support structure and its construction method |
| CN110080807A (en) * | 2019-06-03 | 2019-08-02 | 北京市市政四建设工程有限责任公司 | A kind of lining of tunneling Subway Tunnel big cross section stop line two new type formwork trolley |
| CN111396083A (en) * | 2019-09-29 | 2020-07-10 | 中铁隧道局集团有限公司 | Tunnel lining strip pressing mold pouring process and monitoring method for lining concrete pressure and full state thereof |
| CN111577328A (en) * | 2020-04-29 | 2020-08-25 | 中铁十二局集团有限公司 | Tunnel lining anti-void construction method |
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