CN102678179A - Safety early warning method for deformation and sinking of tunnel vault - Google Patents
Safety early warning method for deformation and sinking of tunnel vault Download PDFInfo
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- CN102678179A CN102678179A CN2012101446364A CN201210144636A CN102678179A CN 102678179 A CN102678179 A CN 102678179A CN 2012101446364 A CN2012101446364 A CN 2012101446364A CN 201210144636 A CN201210144636 A CN 201210144636A CN 102678179 A CN102678179 A CN 102678179A
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Abstract
The invention relates to a safety early warning method for deformation and sinking of a tunnel vault. The method comprises the following steps of: fixing a thin conducting wire on an arched reinforced steel mesh of an initial lining support in the circumferential direction along the cross section of a tunnel through a nylon wire before the construction of spraying concrete of the tunnel; performing the construction of spraying the concrete, and wrapping the thin conducting wire in the sprayed concrete after the concrete is solidified; connecting the two ends of the thin conducting wire with a safety lighting power supply in the tunnel for forming a closed circuit; mounting an early warning bulb on the closed circuit; and arranging one line of the thin conducting wire and the early warning bulb every a certain distance along the longitudinal direction of the tunnel. When the initial lining support of the tunnel deforms due to extrusion by surrounding rocks or blasting vibration, the sprayed concrete of the support can crack, and the thin conducting wire wrapped in the sprayed concrete can be broken by pulling, thus the early warning bulb on the circuit can be turned off for early warning. According to the method disclosed by the invention, the construction safety risk can be monitored in an uninterrupted manner, the construction potential safety hazard of the tunnel can be effectively transformed to visible signals, and then the visible signals can be directly and quickly transferred to field construction staff; and the occurrence of safety accidents can be prevented and the loss can be reduced.
Description
Technical field
The present invention relates in a kind of constructing tunnel process, the method for arch deformation sinking safe early warning is suitable for the safety monitoring alarm that the arch deformation in the constructing tunnel under the various geological conditionss sinks in highway, railway, the municipal engineering.
Technical background
The tunnel is widely used in highway, railway, municipal engineering at present, but security risk is very big in the constructing tunnel, especially finishes during this period of time at lining completion just to two linings, especially the multiple phase of security incident.The first lining design in tunnel is general adopts sprayed mortar, steel mesh reinforcement, steelframe and combining anchor supporting, and is aided with advance supports such as pipe canopy, ductule.In constructing tunnel, because complicacy, the polytropy of geology under the vibrations of the pressure of country rock and construction blasting, the tunnel vault take place often just serve as a contrast the sprayed mortar strain cracking around, casualty accident comes off; Very person's roof fall serious accident of caving in causes more personnel's property loss.
Now, the fine measuring instrument monitoring is generally all taked in monitoring to safety for tunnel engineering.The main feature of this monitoring mode is: (1) tunnel support deformation monitoring density is (according to supporting rate of deformation size) between 3 days 1 time to 1 day 2 times; (2) technical staff forms the monitoring report based on measurement result through analyzing; (3) the construction management personnel send the safety in production warning based on the result of measurement report to the workman, implement the precautionary measures.
The deficiency that the monitoring of above-mentioned precision instrument exists: (1) can not the 24h continuous monitoring; (2) monitoring result is poor if having time to being communicated to the constructor; (3) can not give the constructor a kind of caution intuitively.
Summary of the invention
The object of the invention is exactly in order to remedy the deficiency that above-mentioned safety for tunnel engineering monitoring exists, a kind of method of passing through the tunnel arch deformation sinking safe early warning of circuit and bulb monitoring to be provided.
Technical scheme of the present invention is achieved like this: a kind of method of tunnel arch deformation sinking safe early warning; Be characterized in: the first step: before the tunnel construction of shotcrete; With nylon wire with thin wire along tunnel cross section, hoop is fixed on the arch steel mesh reinforcement of lining supporting just; Second step: the construction sprayed mortar, after the concrete setting, thin wire then is wrapped in the sprayed mortar; The 3rd step: be connected the two ends of thin wire with safety lighting power supply in the tunnel, form closed circuit; Closed circuit going up installed the early warning bulb; Thin wire is with vertically each the segment distance setting along the tunnel of early warning bulb; The 4th step: when the tunnel just serves as a contrast supporting and deformed by country rock extruding or concussion of blasting; The sprayed mortar of supporting will ftracture; When crack width reached the 2mm left and right sides, the thin wire that is wrapped in the sprayed mortar will be broken, and the early warning bulb on the circuit will extinguish early warning.
The present invention can remedy the deficiency that precision instrument can't be monitored safety for tunnel engineering, and continual monitoring construction safety risk can be converted into optical signal to safety for tunnel engineering hidden danger effectively, directly passes to the site operation personnel fast; Take precautions against the generation of security incident, reduce the security incident loss.
The specific embodiment
Embodiment:
The first step: before the tunnel construction of shotcrete, with nylon wire with the RV0.3mm thin wire along tunnel cross section, hoop is fixed on the arch steel mesh reinforcement of lining supporting just.
Second step: the construction sprayed mortar, after the concrete setting, the RV0.3mm thin wire then is wrapped in the sprayed mortar.
The 3rd step: be connected the two ends of RV0.3mm thin wire with safety lighting power supply in the tunnel, form closed circuit.Closed circuit going up installed the yellow bulb of 5W.Vertical every 5m is provided with the RV0.3mm thin wire along the tunnel with the yellow bulb of 5W.
The 4th step: when the tunnel just serves as a contrast supporting and deformed by country rock extruding or concussion of blasting; The sprayed mortar of supporting will ftracture; When crack width reaches the 2mm left and right sides; The RV0.3mm thin wire that is wrapped in the sprayed mortar will be broken, and the yellow bulb of the 5W on the circuit will extinguish early warning.
The 5th step: on-the-spot operator on duty or constructor, find that the yellow bulb of 5W extinguishes, and can notify everybody to withdraw immediately; Corresponding measure to be taked after the eliminating potential safety hazard, returns field operation again.
Claims (4)
1. the method for a tunnel arch deformation sinking safe early warning is characterized in that:
The first step: before the tunnel construction of shotcrete, with nylon wire with thin wire along tunnel cross section, hoop is fixed on the arch steel mesh reinforcement of lining supporting just;
Second step: the construction sprayed mortar, after the concrete setting, thin wire then is wrapped in the sprayed mortar;
The 3rd step: be connected the two ends of thin wire with safety lighting power supply in the tunnel, form closed circuit; Closed circuit going up installed the early warning bulb; Thin wire is with vertically each the segment distance setting along the tunnel of early warning bulb;
The 4th step: when the tunnel just serves as a contrast supporting and deformed by country rock extruding or concussion of blasting; The sprayed mortar of supporting will ftracture; When crack width reached the 2mm left and right sides, the thin wire that is wrapped in the sprayed mortar will be broken, and the early warning bulb on the circuit will extinguish early warning.
2. the method for a kind of tunnel arch deformation sinking safe early warning according to claim 1 is characterized in that: described thin wire adopts the RV0.3mm thin wire.
3. the method for a kind of tunnel arch deformation sinking safe early warning according to claim 1 and 2 is characterized in that: described early warning bulb adopts the yellow bulb of 5W.
4. the method for a kind of tunnel arch deformation sinking safe early warning according to claim 1 is characterized in that: vertically every distance at a distance from 5m is provided with thin wire along the tunnel with the early warning bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101446364A CN102678179A (en) | 2012-05-11 | 2012-05-11 | Safety early warning method for deformation and sinking of tunnel vault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101446364A CN102678179A (en) | 2012-05-11 | 2012-05-11 | Safety early warning method for deformation and sinking of tunnel vault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102678179A true CN102678179A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101446364A Pending CN102678179A (en) | 2012-05-11 | 2012-05-11 | Safety early warning method for deformation and sinking of tunnel vault |
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| CN (1) | CN102678179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278421A (en) * | 2015-10-25 | 2016-01-27 | 泉州市南安市轴飞电子科技有限公司 | Monitoring system based on mobile phone |
| CN106777657A (en) * | 2016-12-12 | 2017-05-31 | 同济大学 | Tunnel Passing existing railway railway deformation monitoring point method for arranging |
| CN114320357A (en) * | 2021-12-02 | 2022-04-12 | 北京市政建设集团有限责任公司 | Crack reinforcing structure for subway tunnel construction and method thereof |
-
2012
- 2012-05-11 CN CN2012101446364A patent/CN102678179A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278421A (en) * | 2015-10-25 | 2016-01-27 | 泉州市南安市轴飞电子科技有限公司 | Monitoring system based on mobile phone |
| CN106527314A (en) * | 2015-10-25 | 2017-03-22 | 泉州市南安市轴飞电子科技有限公司 | System for achieving real-time monitoring on mobile phone |
| CN106527314B (en) * | 2015-10-25 | 2018-01-12 | 福州睿创纺织科技有限公司 | A kind of system monitored in real time on mobile phone |
| CN106777657A (en) * | 2016-12-12 | 2017-05-31 | 同济大学 | Tunnel Passing existing railway railway deformation monitoring point method for arranging |
| CN106777657B (en) * | 2016-12-12 | 2020-07-17 | 同济大学 | Method for arranging deformation monitoring points of tunnel passing through existing railway |
| CN114320357A (en) * | 2021-12-02 | 2022-04-12 | 北京市政建设集团有限责任公司 | Crack reinforcing structure for subway tunnel construction and method thereof |
| CN114320357B (en) * | 2021-12-02 | 2023-09-22 | 北京市政建设集团有限责任公司 | Crack reinforcing structure for subway tunnel construction and method thereof |
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Application publication date: 20120919 |