CN105151086A - Treatment method of railway station signal equipment in mining subsidence areas - Google Patents
Treatment method of railway station signal equipment in mining subsidence areas Download PDFInfo
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- CN105151086A CN105151086A CN201510666115.9A CN201510666115A CN105151086A CN 105151086 A CN105151086 A CN 105151086A CN 201510666115 A CN201510666115 A CN 201510666115A CN 105151086 A CN105151086 A CN 105151086A
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Abstract
The invention discloses a treatment method of railway station signal equipment in mining subsidence areas. The treatment method comprises the following steps: before subsidence, cutting off an original signal circuit and original signal equipment which are buried in road shoulders from a main signal circuit and main signal equipment, and fixing the original signal circuit and the original signal equipment on a steel rail and crossties thereof; still fixing railway station signal equipment which is originally fixed on the steel rail in the subsidence areas on the steel rail; establishing a transitional signal circuit and transitional signal equipment which are connected with the main signal circuit and the main signal equipment and are not damaged by surface subsidence in a crossed manner; performing examination, measurement and maintenance during subsidence so as to enable a railway station signal circuit and railway station signal equipment to normally work; after subsidence ends, cutting off the transitional signal circuit and the transitional signal equipment from the main signal circuit and the main signal equipment, and restoring to lay the signal circuit and the signal equipment under the road shoulders; establishing a signal circuit and signal equipment which are permanently connected with the main signal circuit and the main signal equipment of the railway station in a crossed manner; and clearing away the transitional signal circuit and the transitional signal equipment. Through the adoption of the treatment method, the influences on the railway station signal equipment, caused by surface subsidence of the mining subsidence areas and transverse displacement of the mining subsidence areas, are effectively reduced.
Description
Technical field
The present invention relates to coal mining Treatment process field, particularly relate to the administering method of a kind of sinking land in coalmining areas railway station signal equipment.
Background technology
Railway station signal equipment mainly comprises track switch, signal, track circuit and signal cable, wherein track switch is made up of electric switch machine, erecting device, connection box, signal is made up of high signal, dwarfsignal and transformer box thereof, track circuit is made up of rail, equipment chamber, insulation, fixture wire, bond wire, and signal line is primarily of signal trunk line and signal branch line circuit composition.Railway signals equipment is many, and plant maintenance requires that standard is high, and along with railroad bed depression, displacement, the safety clearance of signalling set, mechanical characteristics, electric parameter are all affected, and bring very big potential safety hazard.
Railway station signal equipment affects larger by sinking land in coalmining areas surface subsidence and cross travel, except electric switch machine, to adopt track switch angle iron installation support to be fixed on rail upper outside, connection box, signal and supporting chamber, high signal, track circuit and supporting chamber thereof, cable chamber is installed in the prefabricated brick concrete foundation of railway shoulder, and keep with railway track the level that sets, vertical gauge, after the land subsidence of the sinking land in coalmining areas, railway line deformation velocity is fast, signalling set electric parameter and level, vertical gauge may change at any time, directly jeopardize traffic safety.Signal line all adopts the buried protection methods of below railway shoulder 0.7m such as passageway steel pipe and cable duct, does not take measures in advance signal cable to be changed to move, and once the normal use sinking must affect signaling at stations equipment, jeopardizes traffic safety.Subgrade settlement causes rail to draw to stretch, run rail makes insulated bolt be out of shape, and very easily causes rail insulation breakage cause track circuit failure and affect driving; Track transformer box can not be installed by installation code, and track lead has the length of standard, and this just exists the inadequate and fixing problem of track lead length, easily causes track circuit failure and affects driving.In the control of sinker area, the restrictive signal equipment by field condition can not be installed as required, brings hidden danger to safe driving.
In sum, how effectively to reduce the impact that railway station signal equipment is subject to sinking land in coalmining areas surface subsidence and cross travel, be current those skilled in the art's urgent problem.
Summary of the invention
The object of this invention is to provide the administering method of a kind of sinking land in coalmining areas railway station signal equipment, significantly reduce the impact that railway station signal equipment is subject to sinking land in coalmining areas surface subsidence and cross travel.
For solving the problems of the technologies described above, the invention provides following technical scheme:
An administering method for sinking land in coalmining areas railway station signal equipment, comprises the steps:
In the front Subsidence Area of depression, the original signal line of railway signaling in station facility, equipment and the main signal circuit that are embedded in curb, equipment are cut off, described railway signaling in station circuit, equipment are fixed on rail and sleeper thereof, originally the described railway station signal equipment be fixed in Subsidence Area on described rail is continued to be fixed on described rail, completes a business transaction that foundation is connected with described main signal circuit, equipment and be not subject to transition signal circuit, the equipment that subsidence damages;
During depression, check measurement and maintenance are carried out to described railway station transition signal circuit, equipment, make described railway signaling in station circuit, equipment normally works;
Described transition signal circuit, equipment and described main signal circuit, equipment cut off after surely sinking by depression, signal line recovers burying arrange ment under curb, curb signalling set recovers to be installed in curb, complete a business transaction signal line, the equipment setting up and be forever connected with described railway station main signal circuit, equipment, remove described transition signal circuit, equipment.
Preferably, described complete a business transaction set up be connected with described main signal circuit, equipment and the method for the transition signal circuit do not damaged by subsidence, equipment comprise and transition signal cable is carried out the heart lay, transition signal equipment is fixed on described rail and sleeper thereof, completes a business transaction and sets up described transition signal circuit, equipment.
Preferably, describedly transition signal cable is carried out the heart lay, transition signal equipment is fixed on described rail and sleeper thereof, completes a business transaction and sets up described transition signal circuit, equipment comprises:
By steel pipe with bury suction pipe and be fixed on rail sleeper;
By described transition signal cable through described steel pipe with describedly bury suction pipe;
By through described steel pipe and the described described transition signal cable burying suction pipe with from Subsidence Area, the most edge foreign side described main signal circuit in some meters of docks;
Dock being fixed on described transition signal equipment on described rail and sleeper thereof with through described steel pipe and the described described transition signal cable burying suction pipe.
Preferably, described the described railway station signal equipment be originally fixed in Subsidence Area on described rail to be continued to be fixed on described rail after be also included in the electric switch machine side of installing track switch and carry out curb and help out with money work, curb is helped out with money width to increase, curb is helped out with money Altitude control in 30mm to 200mm scope at the bottom of described rail.
Preferably, by described transition signal equipment: comprise connection box, dwarfsignal and transformer box thereof, signal cable box, track circuit XB case, track circuit cable box, be fixed on described rail and sleeper thereof.
Preferably, described by comprise connection box, dwarfsignal and transformer box thereof, signal cable box, track circuit XB case, track circuit cable box described railway station signal equipment be fixed on rail and sleeper thereof and comprise:
Processing and fabricating signal erecting device, is connected on two one steel rails by described signal erecting device;
Process the support of described dwarfsignal and voltage transformer chamber thereof, described dwarfsignal and voltage transformer chamber thereof are fixed on described support;
Holing away from the long basic angle steel of track switch of railway side, fix turnout connection box with bolt;
The short basic angle steel of track switch is holed, with bolt trapped orbit circuit XB case and track circuit cable box.
Preferably, described described railway signaling in station circuit, equipment being fixed on rail and sleeper thereof to be also included on high signal setting height place above maximum lower sinker and to install high signal cable box, and the flexible cord connection line signal cable of high signal transformer box to high signal is replaced.
Preferably, described described railway signaling in station circuit, equipment are fixed on rail and sleeper thereof also comprise Jumper is welded with track lead, and fixing described track lead.
Preferably, during described depression to described railway station transition signal circuit, equipment carries out check measurement and maintenance comprises:
Righting, levelling, fastening, adjustment are carried out to signalling set erecting device and support;
Signalling set checked, measures, test and record, the parts broken down are adjusted or changed.
The administering method of the sinking land in coalmining areas provided by the present invention railway station signal equipment, comprise the steps: in the front Subsidence Area of depression, the original signal line of railway signaling in station facility, equipment and the main signal circuit that are embedded in curb, equipment are cut off, railway signaling in station circuit, equipment are fixed on rail and sleeper thereof, originally the railway station signal equipment be fixed on rail in Subsidence Area is continued to be fixed on rail, completes a business transaction that foundation is connected with main signal circuit, equipment and be not subject to transition signal circuit, the equipment that subsidence damages; During depression, check measurement and maintenance are carried out to railway station transition signal circuit, equipment, make railway signaling in station circuit, equipment normally works; Transition signal circuit, equipment and main signal circuit, equipment cut off after surely sinking by depression, signal line recovers burying arrange ment under curb, curb signalling set recovers to be installed in curb, complete a business transaction signal line, the equipment setting up and be forever connected with railway station main signal circuit, equipment, remove transition signal circuit, equipment.This administering method can reduce the impact that railway station signal equipment is subject to sinking land in coalmining areas surface subsidence and cross travel, mine railway normal transport during guaranteeing to mine, can do not change exploitation plan and do not interrupt railway transportation prerequisite under, ensure coal normally produce and transport outward.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The diagram of circuit of the administering method of the sinking land in coalmining areas railway station signal equipment that Fig. 1 provides for detailed description of the invention a kind of in the present invention.
Detailed description of the invention
Core of the present invention is to provide the administering method of a kind of sinking land in coalmining areas railway station signal equipment, significantly reduces the impact that railway station signal equipment is subject to sinking land in coalmining areas surface subsidence and cross travel.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, the diagram of circuit of the administering method of the sinking land in coalmining areas railway station signal equipment that Fig. 1 provides for detailed description of the invention a kind of in the present invention.
In a kind of detailed description of the invention, the administering method of the sinking land in coalmining areas provided by the present invention railway station signal equipment, comprises the steps:
Step S100, in the front Subsidence Area of depression, the original signal line of railway signaling in station facility, equipment and the main signal circuit that are embedded in curb, equipment are cut off, railway signaling in station circuit, equipment are fixed on rail and sleeper thereof, originally the railway station signal equipment be fixed on rail in Subsidence Area is continued to be fixed on rail, completes a business transaction that foundation is connected with main signal circuit, equipment and be not subject to transition signal circuit, the equipment that subsidence damages;
During step S200, depression, check measurement and maintenance are carried out to railway station transition signal circuit, equipment, make railway signaling in station circuit, equipment normally works;
Transition signal circuit, equipment and main signal circuit, equipment cut off after surely sinking by step S300, depression, signal line recovers burying arrange ment under curb, curb signalling set recovers to be installed in curb, complete a business transaction signal line, the equipment setting up and be forever connected with railway station main signal circuit, equipment, remove transition signal circuit, equipment.
This administering method can reduce the impact that railway station signal equipment is subject to sinking land in coalmining areas surface subsidence and cross travel, ensure that in the incidence of the sinking land in coalmining areas, railway station signal equipment electric parameter remains at specification tolerance band, mine railway normal transport during guaranteeing to mine, do not change exploitation plan and do not interrupt railway transportation prerequisite under, ensure that coal is normally produced and transports outward, realize Railway Station Signal equipment subside administer during construction, transport neglect neither, suit measures to local conditions, safe and reliable, cost is low, easily implement, economize on the use of funds.
It needs to be noted, administering method provided by the present invention should not be restricted to this kind of situation, complete a business transaction in step S100 set up be connected with main signal circuit, equipment and the method for the transition signal circuit do not damaged by subsidence, equipment comprise and transition signal cable is carried out the heart lay, transition signal equipment is fixed on rail and sleeper thereof, completes a business transaction and sets up transition signal circuit, equipment.
Preferably, transition signal cable is carried out the heart and lays, transition signal equipment is fixed on rail and sleeper thereof, completes a business transaction and sets up transition signal circuit, equipment comprises: by steel pipe with bury suction pipe and be fixed on rail sleeper; Transition signal cable is passed steel pipe and buries suction pipe; By through steel pipe and the transition signal cable that buries suction pipe with from Subsidence Area, most edge foreign side some meters of main signal circuits dock; Dock being fixed on transition signal equipment on rail and sleeper thereof with through steel pipe and the transition signal cable burying suction pipe.
Specifically, the original signal line of railway signaling in station facility, equipment and the main signal circuit that are embedded in curb, equipment are cut off, railway signaling in station circuit, equipment be fixed on and rail and sleeper thereof also comprise by transition signal circuit circuit is introduced enterprising trade, the rail sleeper center heart in some meters of and laid by most edge foreign side from Subsidence Area, transition signal circuit is docked with main signal circuit one by one by spliced cables box.From Subsidence Area most edge foreign side some meters of circuit introduced enterprising trade, the rail sleeper center heart and lays and comprise: by steel pipe with bury suction pipe and be fixed on sleeper center, cable is penetrated steel pipe along rail direction and lays.It should be noted that cable penetrates steel pipe along rail direction and lays, carry out continuing, protecting with burying suction pipe in turning, interface, with bail by steel pipe, bury suction pipe and be fixed on the sleeper of the heart, meet cement sleeper circuit, sleeper one is laid every some distances, and be connected with railway track with railway spike, fastener, with fixing steel pipe; Use between cable corner place and two steel pipes and bury suction pipe connection; Anti-slip mouth is welded at steel pipe two ends, and interface iron wire side is pricked.Transition signal circuit to be docked one by one with main signal circuit by spliced cables box and comprises: buried underground by spliced cables box and the most edge foreign side in Subsidence Area some meters of, docked one by one by transition signal circuit in spliced cables box with main signal circuit.It should be noted that spliced cables box is arranged in the brick cement concrete fixed base of curb; Brachymemma transition signal line cord pillar, can be truncated to 400mm by cable protecting tube.
Above-mentioned administering method is only a kind of preferred version, specifically be not limited thereto, pointed adjustment can be made according to actual needs on this basis, thus obtain different embodiments, in step S100, the railway station signal equipment be originally fixed on rail in Subsidence Area is continued to be fixed on rail, such as electric switch machine was just fixed on rail originally, without any changes.Carry out curb in the electric switch machine side of installing track switch and help out with money work, curb being helped out with money width increases, and curb helps out with money width can increase 0.5m to 1m, curb is helped out with money Altitude control in 30mm to 200mm scope at the bottom of rail.
In order to optimize technique scheme further, the original signal line of railway signaling in station facility in curb will be embedded in step S100, equipment and main signal circuit, equipment cuts off, by railway signaling in station circuit, equipment is fixed on rail and sleeper thereof, specifically, by transition signal equipment: comprise connection box, dwarfsignal and transformer box thereof, signal cable box, track circuit XB case, track circuit cable box, be fixed on rail and sleeper thereof, be fixed on and rail and sleeper thereof also comprise by transition signal circuit close to track switch frog place and close to transitional facility place, laid to move to outside rail sleeper by the road heart and lay.
On the basis of each specific embodiment above-mentioned, by comprise connection box, dwarfsignal and transformer box thereof, signal cable box, track circuit XB case, track circuit cable box railway station signal equipment be fixed on rail and sleeper thereof and comprise: processing and fabricating signal erecting device, signal erecting device is connected on two one steel rails, specifically utilizes the erecting device of track switch basis angle steel processing and fabricating signal.With L dihedral iron, angle bar backing plate, insulating pad, insulation tube, bolt, signal erecting device is connected on two one steel rails.The support of processing signal machine and voltage transformer chamber thereof, such as uses Zinc-coated angle steel machining support, and signal and voltage transformer chamber thereof are fixed on support.Holing away from the long basic angle steel of track switch of railway side, fix turnout connection box with bolt; The short basic angle steel of track switch is holed, with bolt trapped orbit circuit XB case and track circuit cable box.
Administering method provided by the present invention, in the immovable situation of other parts, in step S100, railway signaling in station circuit, equipment are fixed on and rail and sleeper thereof are also included on high signal setting height place above maximum lower sinker high signal cable box is installed, the flexible cord connection line signal cable of high signal transformer box to high signal is replaced, leather hose is introduced high signal cable box, with leather hose protection signal cable.
It needs to be noted, administering method provided by the present invention should not be restricted to this kind of situation, in step S100, railway signaling in station circuit, equipment are fixed on rail and sleeper thereof also comprise and Jumper is welded with track lead, fixing track lead.Jumper is welded with track lead, fixing track lead comprises to be fixed rail insulation fixture wire connection terminal end, weld with Jumper plug pin head at rail insulation fixture wire plug pin head, processing and fabricating fixes the cement concrete lumps of wood or the sleeper lumps of wood of fixture wire, the cement concrete lumps of wood or the sleeper lumps of wood are embedded in fixture wire turning, several attachment points established by the cement concrete lumps of wood or the sleeper lumps of wood, part coil unnecessary for fixture wire is fixed on cement concrete or the sleeper lumps of wood.
On the basis of each specific embodiment above-mentioned, in step S200 during depression to railway station transition signal circuit, equipment carries out check measurement and maintenance comprises: to signalling set erecting device and support carry out righting, levelling, fastening, adjustment; Signalling set checked, measures, test and record, the parts broken down are adjusted or changed.Specifically, a check measurement is done and record every day to the safety clearances such as signalling set, mechanical characteristics, electric parameter; The every depression setpoint distance of circuit, such as 100mm or translation setpoint distance, such as 200mm, must to Subsidence Area all signalling sets erecting device and support righting, levelling, once fastening; Signalling set chamber erecting device, riding exceed setpoint distance adjustment once, such as 10mm; Carry out a track switch insulation inspection, check for loose, closely connected inspection, indication notch inspection, action test, measurement track switch operation voltage, switch machine frictional working current every day, finally carry out pulling test and record, find the bad timely adjustment of mode of operation; To checking out that bad track switch insulation spacer, insulation tube, bullet pad are changed in time; The every translation setpoint distance of circuit, such as 20mm, must to track switch throw rod, indication rod, track switch gap adjustment once; The pipe link that discovery abrasion loss, camber exceed standard, throw rod, expression rod member are changed in time; High signal column is tilted beyond setpoint distance adjustment once, such as 36mm; Circuit Mei Tai road setpoint distance, such as 100mm, or dial move setpoint distance, such as 100mm, overhaul track circuit rail insulation, insulated bolt once, find that bad rail insulation and bolt are changed in time; Rail bond, track lead break stock more than 1/3 time change in time; Crossing equipment and signal cable test in every some days once, are pinpointed the problems and are processed in time; Depression active period to establish electricity business watch keeper room in driving to be responsible for being engaged in car every day, work is engaged in contacts; Work business is when section with a switch or switches plays track lining, and electricity business sends two people's coordinating operations, to ensure that signalling set does not affect driving.
For the administering method in each embodiment above-mentioned, in step S300, transition signal circuit, equipment and main signal circuit, equipment cut off after surely sinking by depression, signal line recovers burying arrange ment under curb, curb signalling set recovers to be installed in curb, complete a business transaction signal line, the equipment setting up and be forever connected with railway station main signal circuit, equipment, remove transition signal circuit, equipment.Outside preventing portion sub-signal equipment is chronically exposed to, subject to artificial destruction, Subsidence Area signalling set needs be undertaken recovering the permanent signal facility in this region by former design and associated specifications standard in time.By track switch, dwarfsignal, track circuit and supporting chamber, recover to be installed in the brick cement concrete fixed base of curb, signal cable is recovered burying arrange ment, non-compliant high signal column is changed, and build fender pier protection by laying bricks or stones.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an administering method for sinking land in coalmining areas railway station signal equipment, is characterized in that, comprises the steps:
In the front Subsidence Area of depression, the original signal line of railway signaling in station facility, equipment and the main signal circuit that are embedded in curb, equipment are cut off, described railway signaling in station circuit, equipment are fixed on rail and sleeper thereof, originally the described railway station signal equipment be fixed in Subsidence Area on described rail is continued to be fixed on described rail, completes a business transaction that foundation is connected with described main signal circuit, equipment and be not subject to transition signal circuit, the equipment that subsidence damages;
During depression, check measurement and maintenance are carried out to described railway station transition signal circuit, equipment, make described railway signaling in station circuit, equipment normally works;
Described transition signal circuit, equipment and described main signal circuit, equipment cut off after surely sinking by depression, signal line recovers burying arrange ment under curb, curb signalling set recovers to be installed in curb, complete a business transaction signal line, the equipment setting up and be forever connected with described railway station main signal circuit, equipment, remove described transition signal circuit, equipment.
2. administering method according to claim 1, it is characterized in that, described complete a business transaction set up be connected with described main signal circuit, equipment and the method for the transition signal circuit do not damaged by subsidence, equipment comprise and transition signal cable is carried out the heart lay, transition signal equipment is fixed on described rail and sleeper thereof, completes a business transaction and sets up described transition signal circuit, equipment.
3. administering method according to claim 2, is characterized in that, describedly transition signal cable is carried out the heart lays, and transition signal equipment is fixed on described rail and sleeper thereof, completes a business transaction and sets up described transition signal circuit, equipment comprises:
By steel pipe with bury suction pipe and be fixed on rail sleeper;
By described transition signal cable through described steel pipe with describedly bury suction pipe;
By through described steel pipe and the described described transition signal cable burying suction pipe with from Subsidence Area, the most edge foreign side described main signal circuit in some meters of docks;
Dock being fixed on described transition signal equipment on described rail and sleeper thereof with through described steel pipe and the described described transition signal cable burying suction pipe.
4. administering method according to claim 1, it is characterized in that, described the described railway station signal equipment be originally fixed in Subsidence Area on described rail to be continued to be fixed on described rail after be also included in the electric switch machine side of installing track switch and carry out curb and help out with money work, curb is helped out with money width to increase, curb is helped out with money Altitude control in 30mm to 200mm scope at the bottom of described rail.
5. administering method according to claim 1, it is characterized in that, by described transition signal equipment: comprise connection box, dwarfsignal and transformer box thereof, signal cable box, track circuit XB case, track circuit cable box, be fixed on described rail and sleeper thereof.
6. administering method according to claim 5, it is characterized in that, described by comprise connection box, dwarfsignal and transformer box thereof, signal cable box, track circuit XB case, track circuit cable box described railway station signal equipment be fixed on rail and sleeper thereof and comprise:
Processing and fabricating signal erecting device, is connected on two one steel rails by described signal erecting device;
Process the support of described dwarfsignal and voltage transformer chamber thereof, described dwarfsignal and voltage transformer chamber thereof are fixed on described support;
Holing away from the long basic angle steel of track switch of railway side, fix turnout connection box with bolt;
The short basic angle steel of track switch is holed, with bolt trapped orbit circuit XB case and track circuit cable box.
7. administering method according to claim 1, it is characterized in that, described described railway signaling in station circuit, equipment being fixed on rail and sleeper thereof to be also included on high signal setting height place above maximum lower sinker and to install high signal cable box, and the flexible cord connection line signal cable of high signal transformer box to high signal is replaced.
8. administering method according to claim 1, is characterized in that, described described railway signaling in station circuit, equipment are fixed on rail and sleeper thereof also comprise Jumper is welded with track lead, and fixing described track lead.
9. the administering method according to any one of claim 1-8, is characterized in that, during described depression to described railway station transition signal circuit, equipment carries out check measurement and maintenance comprises:
Righting, levelling, fastening, adjustment are carried out to signalling set erecting device and support;
Signalling set checked, measures, test and record, the parts broken down are adjusted or changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666115.9A CN105151086A (en) | 2015-10-15 | 2015-10-15 | Treatment method of railway station signal equipment in mining subsidence areas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666115.9A CN105151086A (en) | 2015-10-15 | 2015-10-15 | Treatment method of railway station signal equipment in mining subsidence areas |
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| CN105151086A true CN105151086A (en) | 2015-12-16 |
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| CN201510666115.9A Pending CN105151086A (en) | 2015-10-15 | 2015-10-15 | Treatment method of railway station signal equipment in mining subsidence areas |
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| CN1312414A (en) * | 2001-03-12 | 2001-09-12 | 荣海文 | Support equipment and technological process to correct the displacement of surface track in goaf |
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Application publication date: 20151216 |
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