Tunnel support top layer settlement early warning device
Technical Field
The invention relates to the field of underground engineering, in particular to a roadway support top layer settlement early warning device.
Background
Underground engineering construction relates to road construction, mining and the like, an underground tunnel needs to be excavated in the underground construction process, and the stability of the underground tunnel is related to the life safety of workers in all tunnels, so that the tunnel needs to be supported and detected, and the tunnel is prevented from sinking.
The existing roadway early warning device is usually optical early warning, the light incidence and reflection change due to the deformation before roadway subsidence, the roadway subsidence condition is judged by detecting the light path change, the optical precision is high, the roadway can not work in a severe environment for a long time, the optical detection needs long-time startup detection, the power consumption is large, and the roadway is not favorably monitored in real time for a long time.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a roadway support top layer settlement early warning device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a roadway support top layer settlement early warning device comprises two symmetrically arranged supporting columns, wherein each supporting column is provided with a first connecting sleeve and a second connecting sleeve, a reinforcing cross rod is arranged between the two first connecting sleeves, a supporting cross rod is arranged between the two second connecting sleeves, the supporting cross rod is symmetrically provided with two supporting sleeves, the two supporting sleeves are fixed on the top wall in a roadway, and a liquid guide cavity, a liquid storage cavity and a battery cavity are sequentially arranged in the reinforcing cross rod from left to right;
the detection device comprises a liquid guide cavity, a liquid storage cavity, a liquid guide pipe, a liquid storage cavity, a first conductive head, a second conductive head, a positive wire, a storage battery, a reinforcing transverse rod, a gas pipe and a detection mechanism, wherein the liquid guide cavity is provided with a liquid flow pipe at the upper end in an inserted manner, one end of the liquid flow pipe is inserted in and communicated with the liquid storage cavity, the lower end of the liquid guide cavity is hermetically inserted in and provided with the first conductive head, the first conductive head is electrically connected with the wire, the lower end of the liquid storage cavity is hermetically inserted in and provided with the second conductive head, the second conductive head is electrically connected with the positive wire, the conductive liquid is injected in the liquid storage cavity, the storage battery is arranged in the battery cavity, the positive wire is electrically connected with;
the reinforcing cross rod can guarantee that two support columns act on the support cross rod perpendicularly, increases the holding power of support cross rod, and can provide the secondary support when supporting the cross rod and suffer unable support after the settlement destruction, and the tunnel personnel safety is evacuated and relevant staff is tested and is restoreed the tunnel settlement in being convenient for, reduces the probability that the tunnel directly sinks, reduces casualties and engineering loss.
Preferably, the detection mechanism comprises a connecting seat fixedly installed at the lower end of the supporting cross rod, a detection rod is fixedly installed at the lower end of the connecting seat, a piston cylinder is arranged at the lower end of the detection rod in a sliding sealing manner, the lower end of the piston cylinder is fixedly installed at the upper end of the reinforcing cross rod, and the lower end of the piston cylinder is fixedly sleeved on the air pipe;
when the sinking takes place at tunnel top, support the horizontal pole by the earth and rock pressure of sinking and bend, the support horizontal pole that bends promotes the measuring pole and slides downwards in the piston cylinder, makes the increase of piston cylinder internal gas pressure, then piston cylinder internal gas pressure passes through the trachea and discharges to the stock solution intracavity, then stock solution intracavity pressure increase, and the extrusion conducting liquid gets into the drain intracavity along the liquid flow pipe, then the conducting liquid of drain intracavity switches on with first conducting head electric contact.
Preferably, the reinforcing cross bar is symmetrically provided with two latches, the lower ends of the two latches are jointly provided with the mounting plate, the lower end of the mounting plate is fixedly provided with the warning lamp, and one ends of the connecting wire and the negative wire extend to the outer side of the reinforcing cross bar and are electrically connected with the warning lamp;
when the sinking occurs, the first conducting head and the conducting liquid are in contact conduction, then the conducting liquid in the liquid storage cavity, the conducting liquid in the liquid flow pipe, the conducting liquid in the liquid guide cavity, the first conducting head, the connecting wire, the warning lamp, the negative electrode wire, the storage battery, the positive electrode wire, the second conducting head and the conducting liquid in the liquid storage cavity are in conduction, and then the warning lamp gives out a warning to remind people of rapidly withdrawing.
Preferably, one end of the liquid flow pipe, which is positioned in the liquid guide cavity, is positioned below the inner part of the liquid guide cavity and is lower than the first conductive head;
the height of the pipe orifice of the liquid flow pipe is lower than that of the first conductive head, so that the conductive liquid in the liquid flow pipe is completely contacted and conducted with the first conductive head in the liquid guide cavity, and the phenomenon of poor contact is avoided.
Preferably, a constant pressure air pipe is embedded in the reinforcing cross rod and is communicated with the liquid guide cavity and the outer side of the reinforcing cross rod;
the constant pressure trachea is with drain chamber and external intercommunication, can guarantee that drain chamber is unanimous with external atmospheric pressure promptly, can make conducting solution flow into the drain intracavity more easily promptly, increases the sensitivity of device.
Preferably, the two support columns are respectively provided with a secondary protective sleeve, and a support diagonal rod is fixedly welded between each support sleeve and the secondary protective sleeve on the corresponding side of the support sleeve;
when the tunnel roof takes place small settlement and makes the centre of supporting the horizontal pole crooked, crooked support horizontal pole passes through the connecting seat and triggers the detection pole to detect, and after the detection warning, supports the horizontal pole and receives the tunnel roof's of settlement pressure to disperse to the support column of both sides through two support down tube on for the device has a secondary holding power to the tunnel roof, and the staff of being convenient for explores and restores the reinforcement.
The invention has the following beneficial effects:
1. when the roadway is not sunk, the detection rod and the piston cylinder do not slide relatively, the air pressure in the liquid storage cavity does not change, and then the loop 'conducting liquid in the liquid flow pipe, conducting liquid in the liquid guide cavity, a first conducting head, a connecting wire, a warning lamp, a negative electrode wire, a storage battery, a positive electrode wire, a second conducting head and conducting liquid in the liquid storage cavity' is not conducted, namely the storage battery does not have external power consumption at the moment, so that the energy consumption of the device is reduced, the device can monitor the roadway sinking condition in real time, unnecessary power consumption can be reduced, and power resources are saved.
2. The pressure intensity in the liquid storage cavity is increased through the relative sliding between the detection rod and the piston cylinder, so that part of conductive liquid in the liquid storage cavity is pressed into the liquid guide cavity along the liquid flow pipe, the conductive liquid in the liquid storage cavity, the conductive liquid in the liquid flow pipe, the conductive liquid in the liquid guide cavity and the first conductive head are in contact conduction, then the loop is conducted, the warning lamp is triggered to alarm, no precise electronic component is used for detection, and the detection device is suitable for being used in a roadway with a severe environment for a long time.
3. The height of the pipe orifice of the liquid flow pipe in the liquid guiding cavity is lower than that of the first conductive head, so that the conductive liquid in the liquid flow pipe is in contact communication with the conductive liquid in the liquid guiding cavity, the conductive liquid is in contact communication with the first conductive head, the phenomenon of poor contact is avoided, and the reliability of detection of the device is improved.
4. When the sinking takes place in the tunnel, the tunnel roof of sinking will support the middle of horizontal pole and bend, and crooked support horizontal pole is with tunnel sinking pressure through two support down tube dispersion to two support columns on, increase the holding power of supporting the horizontal pole to the tunnel roof, can support post tunnel roof after crooked trigger detection pole reports to the police and make personnel withdraw and make relevant staff explore and repair the reinforcement, increase the security of device.
5. Consolidate the horizontal pole setting between two support columns for two support columns perpendicular effect increase the holding power that supports the horizontal pole on supporting the horizontal pole, and can't support the settlement in tunnel and damaged the back when supporting the horizontal pole, consolidate the horizontal pole and have secondary protection support capacity, the tunnel personnel safety of being convenient for withdraw and relevant staff is tested and is restoreed the tunnel settlement, reduces the probability that the tunnel directly sinks, reduces casualties and engineering loss.
In conclusion, the circuit is not conducted under normal conditions, the loss of the device is reduced, the power resource is saved, the applicability of the device is increased through mechanical detection and transmission of the detection rod and the piston cylinder, the detection reliability of the device is increased through the height arrangement of the pipe orifice of the liquid flow pipe and the first conductive head, the pressure borne by the support cross rod is dispersed by the support inclined rod, the support force of the support cross rod is increased, the cross rod is reinforced, the two support columns vertically act on the support cross rod, the support force of the support cross rod is increased, secondary support is provided after the support cross rod is damaged, the direct sinking probability of a roadway is reduced, and casualties and engineering loss are reduced.
Drawings
Fig. 1 is a schematic structural diagram of a roadway support top layer settlement early warning device provided by the invention;
FIG. 2 is an enlarged view of a reinforcing cross bar part of the early warning device for settlement of the top layer of the roadway support provided by the invention
FIG. 3 is a diagram illustrating a second embodiment.
In the figure: the device comprises a support column 1, a first connecting sleeve 2, a support sleeve 3, a cross rod 4, a connecting seat 5, a detection rod 6, a piston cylinder 7, a lock catch 8, a mounting plate 9, a warning lamp 10, a reinforcing cross rod 11, a second connecting sleeve 12, a battery cavity 13, a storage battery 14, a positive electrode lead 15, a liquid storage cavity 16, an air pipe 17, a liquid flow pipe 18, a constant-pressure air pipe 19, a liquid guide cavity 20, a first conductive head 21, a connecting lead 22, a second conductive head 23, a negative electrode lead 24, conductive liquid 25, a secondary protective sleeve 26 and a support inclined rod 27.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The first embodiment is as follows:
referring to fig. 1-2, the early warning device for settlement of the top layer of the roadway support comprises two support columns 1 which are symmetrically arranged, wherein each support column 1 is provided with a first connecting sleeve 2 and a second connecting sleeve 12, a reinforcing cross rod 11 is arranged between the two first connecting sleeves 2, a support cross rod 4 is arranged between the two second connecting sleeves 12, two support sleeves 3 are symmetrically arranged on the support cross rod 4, the two support sleeves 3 are fixed on the top wall in the roadway, and a liquid guide cavity 20, a liquid storage cavity 16 and a battery cavity 13 are sequentially arranged in the reinforcing cross rod 11 from left to right;
a liquid flow pipe 18 is inserted into the upper end of the liquid guide cavity 20, one end of the liquid flow pipe 18 is inserted into and communicated with the liquid storage cavity 16, a first conductive head 21 is inserted into the lower end of the liquid guide cavity 20 in a sealing manner, the first conductive head 21 is electrically connected with a connecting wire 22, a second conductive head 23 is inserted into the lower end of the liquid storage cavity 16 in a sealing manner, the second conductive head 23 is electrically connected with a positive wire 15, conductive liquid 25 is injected into the liquid storage cavity 16, a storage battery 14 is installed in the battery cavity 13, the positive wire 15 is electrically connected with a positive wire end of the storage battery 14, a negative wire end of the storage battery 14 is electrically connected with a negative wire 24, an air pipe 17 is inserted into the reinforcing cross rod 11, the lower end of the air pipe 17 is communicated with the liquid storage cavity 16, and a;
consolidate horizontal pole 11 and can enough guarantee two support columns 1 perpendicular effects on supporting horizontal pole 4, increase the holding power that supports horizontal pole 4, and can support 4 and provide the secondary when suffering the unable support after the settlement destruction and support, the tunnel personnel safety withdraw and relevant staff carries out reconnaissance and restoration to the tunnel settlement in being convenient for, reduce the probability that the tunnel directly sinks, reduce casualties and engineering loss.
The detection mechanism comprises a connecting seat 5 fixedly arranged at the lower end of the supporting cross rod 4, a detection rod 6 is fixedly arranged at the lower end of the connecting seat 5, a piston cylinder 7 is slidably and hermetically sleeved at the lower end of the detection rod 6, the lower end of the piston cylinder 7 is fixedly arranged at the upper end of the reinforcing cross rod 11, and the lower end of the piston cylinder 7 is fixedly sleeved on the air pipe 17;
when tunnel top took place the settlement before the tunnel subsides, support horizontal pole 4 is bent by the earth and rock pressure of subsidence, and the support horizontal pole 4 of bending promotes check rod 6 and slides downwards in piston cylinder 7, makes the increase of piston cylinder 7 internal gas pressure, then in piston cylinder 7 internal gas pressure passes through trachea 17 and discharges to stock solution chamber 16, then the increase of pressure in the stock solution chamber 16, extrusion conducting liquid 25 along the liquid flow pipe 18 get into in drain chamber 20, then conducting liquid 25 and the first conductive head 21 electrical contact in the drain chamber 20 switch on.
The reinforcing cross bar 11 is symmetrically provided with two latches 8, the lower ends of the two latches 8 are jointly provided with a mounting plate 9, the lower end of the mounting plate 9 is fixedly provided with a warning lamp 10, and one ends of a connecting wire 22 and a negative wire 24 extend to the outer side of the reinforcing cross bar 11 and are electrically connected with the warning lamp 10;
when the settlement occurs, the first conductive head 21 and the conductive liquid 25 are in contact conduction, and then the conductive liquid 25 in the liquid storage cavity 16, the conductive liquid 25 in the liquid flow pipe 18, the conductive liquid 25 in the liquid guide cavity 20, the first conductive head 21, the connecting wire 22, the warning lamp 10, the negative electrode wire 24, the storage battery 14, the positive electrode wire 15, the second conductive head 23 and the conductive liquid 25 in the liquid storage cavity 16 are in conduction, and then the warning lamp 10 gives out a warning to remind people of rapidly evacuating.
One end of the liquid flow pipe 18 positioned in the liquid guide cavity 20 is positioned below the inner part of the liquid guide cavity 20 and is lower than the first conductive head 21;
the height of the orifice of the liquid flow pipe 18 is lower than that of the first conductive head 21, so that the conductive liquid 25 in the liquid flow pipe 18 is completely contacted and conducted with the first conductive head 21 in the liquid guide cavity 20, and the phenomenon of poor contact is avoided.
A constant pressure air pipe 19 is embedded in the reinforcing cross rod 11, and the constant pressure air pipe 19 is communicated with the drainage cavity 20 and the outer side of the reinforcing cross rod 11;
the constant-pressure air pipe 19 is used for communicating the liquid guide cavity 20 with the outside, so that the consistency of the liquid guide cavity 20 and the outside air pressure can be ensured, the conductive liquid 25 can flow into the liquid guide cavity 20 more easily, and the sensitivity of the device is improved.
In this embodiment, when the top of the roadway begins to sink, the top of the roadway that sinks is squeezed to bend the supporting cross bar 4, the connecting seat 5 moves downward and pushes the detecting rod 6 to move downward, the detecting rod 6 slides in the piston cylinder 7 to increase the pressure in the piston cylinder 7, the pressure in the piston cylinder 7 enters the liquid storage cavity 16 through the air pipe 17, so that the pressure in the liquid storage cavity 16 increases, the conductive liquid 25 in the liquid storage cavity 16 is pressed into the liquid guiding cavity 20 along the liquid flow pipe 18, the conductive liquid 25 enters the liquid guiding cavity 20 to contact the first conductive head 21, and the height of the pipe orifice of the liquid flow pipe 18 in the liquid guiding cavity 20 is lower than the height of the first conductive head 21, so that the conductive liquid 25 in the liquid flow pipe 18 contacts the conductive liquid 25 in the liquid guiding cavity 20, that the liquid 25 in the liquid flow pipe 18 contacts and is conducted with the first conductive head 21, and the conductive liquid 25 in the liquid flow pipe 18 in the liquid guiding cavity 20-the conductive liquid 25 in the liquid guiding cavity 16-the conductive liquid 25-the liquid guiding cavity 20-the first conductive head 21-the connecting wire 22-the connecting wire The negative lead 24, the storage battery 14, the positive lead 15, the second conductive head 23 and the conductive liquid 25 in the liquid storage cavity 16 are conducted, namely the warning lamp 10 is electrified to start alarming and prompt personnel to evacuate quickly;
when supporting horizontal pole 4 fracture damage under great settlement pressure effect, consolidate horizontal pole 11 and can provide the secondary support for the inside personnel in tunnel have time to withdraw and relevant staff have time to carry out reconnaissance and maintenance to it, avoid the direct settlement in tunnel to cause casualties and engineering loss.
Example two:
referring to fig. 3, a roadway support top layer subsidence warning device is substantially the same as the first embodiment, and the differences are as follows:
the two support columns 1 are respectively provided with a secondary protective sleeve 26, and a support diagonal rod 27 is fixedly welded between each support sleeve 3 and the secondary protective sleeve 26 on the corresponding side;
when the tunnel roof takes place small settlement and makes the centre of supporting horizontal pole 4 crooked, crooked supporting horizontal pole 4 triggers measuring pole 6 through connecting seat 5 and detects, and after the detection warning, supports horizontal pole 4 and receive the tunnel roof's that sinks pressure through two support down tube 27 dispersion to the support column 1 of both sides for the device has a secondary holding power to the tunnel roof, and the staff of being convenient for explores and restores the reinforcement.
In this embodiment, when supporting horizontal pole 4 and receiving tunnel roof settlement pressure, pressure increases the holding power that supports horizontal pole 4 through two support down tube 27 dispersion to two support columns 1 on for support horizontal pole 4 can not be easily broken by tunnel settlement pressure, increases the life-span that supports horizontal pole 4.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.