CN103528563B - A kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring - Google Patents
A kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring Download PDFInfo
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- CN103528563B CN103528563B CN201310500677.7A CN201310500677A CN103528563B CN 103528563 B CN103528563 B CN 103528563B CN 201310500677 A CN201310500677 A CN 201310500677A CN 103528563 B CN103528563 B CN 103528563B
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Abstract
The invention discloses a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring, belong to environment of mining area and administer field.Beat monitoring hole from ground until gob floor, bottom hole, arrange base steel seat casing, and under structure glue or sand-cement slurry effect, be anchored in country rock by annular protrusion; Constant speed depression layer casing, at a slow speed depression layer casing are mutually nested layer by layer with base steel seat casing with ball respectively by O-ring seal with dead slow speed depression layer casing, and by annular protrusion and affiliated layer anchoring; Then by the first stiff end and the first tape measure, the second stiff end and the second tape measure, the 3rd stiff end and the 3rd tape measure, read the depression numerical value of each layer by ground block and counterweight sliding weight of steelyard unitized construction, realize the monitoring to mined-out region.The present invention can in real time, continuously, the subsidence development of grade ground monitoring mined-out region, administer to provide to environment of mining area and provide powerful support for.
Description
Technical field
The present invention relates to environment of mining area and administer field, especially relate to a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring.
Background technology
Coal in China mineral resources are very abundant, are, while tremendous contribution is made in socio-economic development, also result in very great impact and even destruction to environment of mining area at Coal Resource Development.The particularly mined-out region of pit mining formation, be the main cause causing environmental problems in mine areas, mining area people life property safety in serious harm, governs the sustainable development of Local Society economy, is the main contents that environment of mining area is administered.Due to coal in China output 95% from pit mining, the goaf top plate of pit mining emits backwardness can be formed " three bands ", i.e. caving zone, fissure zone and warp damage, caving zone and fissure zone are collectively referred to as again inbreak fissure zone, its distortion completes very soon after working face extraction, and generally, the inbreak fissure zone height that soft rock is formed is adopt thick 9 ~ 12 times, medium hard rock is adopt thick 12 ~ 18 times, and solid rock is adopt thick 18 ~ 28 times.And warp damage is all parts of inbreak fissure zone to ground, its distortion will go through the quite a long time, by its rate of sinking relatively difference can be divided into three layers again, i.e. constant speed depression layer, at a slow speed depression layer and dead slow speed depression layer.Visible, mined-out region brings embodiment by bending subsidence, namely by can realize the monitoring to mined-out region to the monitoring of warp damage.
At present, method about mined-out region depression monitoring mainly contains laser measurement, measurement of the level, total station survey, GPS measures and D-InSAR measures, all these monitoring methods, as the Coal Mining Subsidence vehicular laser measurement method (application number: CN201110026660.3) of Wu Lixin invention, its deficiency is all: it only can show established depression situation with monitoring, and cannot in real time, continuously formation following layer subsidence development situation monitor.In addition, the deficiency that GPS (GlobalPositioningSystem) measures also is embodied in its deformation that can only reflect indivedual underground monitoring point, and can not the overall change embodying depression; D-InSAR (DifferentialInterferometricSyntheticApertureRadar), though measure the depression situation that entirety reflects mining area, real-time continuous can not monitor, and also needs foreign technology support.And for example Wu opens a kind of horizontal deformation of soil body at worked-out subsidence area monitoring system (application number: CN201010242650.9) of medium invention, it is mainly monitored earth's surface soil body different distortion in the horizontal direction, thus obtain being out of shape the impact on pre-buried oil and gas pipes, its deficiency is just to carry out depression monitoring to the partial layer position of topsoil.So, the Subsidence law of mined-out region to be grasped in detail, need to invent a kind of system and method that can carry out real-time continuous monitoring at mined-out region on the whole.By the monitoring to each layer position of mined-out region, obtain detailed data information, so research mined-out region Subsidence law, measurable subsidence area depression situation, thus in time the Surface structure that may affect is protected, generation of preventing accident; And countermeasure can be taked targetedly according to the concrete Subsidence law of mined-out region, provide powerful support for for environment of mining area improvement provides.
Summary of the invention
For current Problems existing in mined-out region monitoring; the object of the present invention is to provide a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring; with realize to mined-out region each layer position real-time, continuous, monitor grade; obtain detailed data information, realize prediction mined-out region depression situation, the Surface structure protecting mined-out region to affect in time further, targetedly control measures taked to mined-out region.
For achieving the above object, the present invention is by the following technical solutions:
Utilize depression monitoring system to carry out a method for mined-out region depression monitoring, depression monitoring system by monitoring hole, base steel seat casing, annular protrusion, protective sheet, O-ring seal, ball, constant speed depression layer casing, pad, the first stiff end, the first tape measure, at a slow speed depression layer casing, the second stiff end, the second tape measure, dead slow speed depression layer casing, the 3rd stiff end, the 3rd tape measure, support steel pole, pulley, little pointer, counterweight sliding weight of steelyard, annular steel ring, circular cone top cover form; Wherein, described monitoring hole is positioned on the base plate of coal mine gob, and base steel seat casing is positioned at bottom monitoring hole; Described annular protrusion is welded on base steel seat casing, constant speed depression layer casing, at a slow speed depression layer casing and dead slow speed depression layer casing respectively, and is anchored in each self-corresponding layer position respectively by structure glue or sand-cement slurry effect; Described base steel seat casing, constant speed depression layer casing and at a slow speed depression layer casing top have protective sheet; Described constant speed depression layer casing, at a slow speed depression layer casing and dead slow speed depression layer casing are nested in base steel seat casing, constant speed depression layer casing and at a slow speed in depression layer casing respectively by O-ring seal and ball; Pad is provided with bottom described constant speed depression layer casing, at a slow speed depression layer casing and dead slow speed depression layer casing; Described first stiff end and the second stiff end are welded on constant speed depression layer casing respectively and at a slow speed bottom depression layer casing, the 3rd stiff end is welded on the middle and upper part of dead slow speed depression layer casing; First tape measure, the second tape measure, the 3rd tape measure one end are separately fixed on the first stiff end, the second stiff end and the 3rd stiff end, and the other end is connected with counterweight sliding weight of steelyard by pulley; Described little pointer is fixed on the pulley side above counterweight sliding weight of steelyard; The welding of described dead slow speed depression layer casing top supports steel pole, and at supporting steel masthead, annular steel ring is welded in portion, and circular cone top cover is placed on annular steel ring.
Described monitoring method is:
1) beat monitoring hole from ground until gob floor, bottom monitoring hole, arrange base steel seat casing, and be anchored in country rock by welding annular protrusion thereon under structure glue or sand-cement slurry effect;
2) constant speed depression layer casing, at a slow speed depression layer casing and dead slow speed depression layer casing are respectively by O-ring seal and mutually nested layer by layer between ball with base steel seat casing, and each via annular protrusion and affiliated layer anchoring;
3) respectively by the first stiff end and the first tape measure, the second stiff end and the second tape measure, the 3rd stiff end and the 3rd tape measure, realize real-time, continuous, to read to small scale (grade) constant speed depression layer, at a slow speed depression layer and dead slow speed depression layer in mined-out region depression numerical value by ground block and counterweight sliding weight of steelyard unitized construction, obtain the monitoring materials such as the sinkage at depression changing trend diagram and different time interval.
Further, the diameter of described monitoring hole is greater than and equals 300mm; The diameter of described base steel seat casing is 200mm, is highly caving zone and fissure zone sum; The diameter of described constant speed depression layer casing is 195mm, and the diameter of depression layer casing is 190mm at a slow speed, and the diameter of dead slow speed depression layer casing is 185mm, and each casing is made by stainless steel material.
Further, the annular protrusion welded outside described base steel seat casing, constant speed depression layer casing, at a slow speed depression layer casing and dead slow speed depression layer casing is at least 3 circles, to increase the anchor force of casing and surrounding layers by structure glue or sand-cement slurry effect; Fine sand or pitch are filled in space outside described base steel seat casing, constant speed depression layer casing, at a slow speed depression layer casing and dead slow speed depression layer casing except annular protrusion and between monitoring hole, fracture in order to prevent local deformation; Described O-ring seal is rubber seal, plays casing sealing function, and the stainless shot of ball to be diameter be 2.5mm, so that the relative sliding between each casing; Described protective sheet is welded in inner edge, each casing top, in order to the wear-out failure preventing periphery foreign material from producing O-ring seal; Described pad is welded in each casing bottom outer-edge, prevents the unexpected slippage of ball.
Further, described first stiff end is constant speed depression layer stiff end, the second stiff end is depression layer stiff end at a slow speed, be welded on constant speed depression layer casing respectively and at a slow speed bottom depression layer casing, and require that the first stiff end to depression layer casing at a slow speed, the second stiff end to the distance of dead slow speed depression layer casing bottom gasket will be greater than the depression length of depression layer and dead slow speed depression layer at a slow speed respectively; Described 3rd stiff end is dead slow speed depression layer stiff end, is welded on dead slow speed depression layer casing middle and upper part, can saves certain material.
Further, constant speed depression layer casing initial placement is in base steel seat casing top, and certain ball can be laid in the overlay region of two casings; Will stretch into constant speed depression layer casing certain distance during the described layer of depression at a slow speed casing initial placement, this development length is greater than constant speed depression layer casing with depression layer casing at a slow speed because of different the produced Relative sliding distance of rate of subsidence; Depression layer casing certain distance at a slow speed will be stretched into during described dead slow speed depression layer casing initial placement, this development length is greater than depression layer casing and dead slow speed depression layer casing at a slow speed, because of different the produced Relative sliding distance of rate of subsidence, so would not there is discrepancy between casing.
Further, described first tape measure, the second tape measure and the 3rd tape measure are made up of flexible stainless steel material, and it has scale, and minimum scale is 1mm; The pulley of described each depression layer correspondence is identical with counterweight sliding weight of steelyard unitized construction, and its middle pulley is 2; The pulley side of little pointer on counterweight sliding weight of steelyard maintains static, and be convenient to concrete numerical value when reading depression monitoring, the difference of the numerical value of each time point is exactly the sinkage in this time interval.
Further, described support steel pole is 4 stainless steel steel poles, is welded on dead slow speed depression layer casing respectively at four direction, in order to support annular steel ring and on circular cone top cover; Described annular steel ring is made up of stainless steel material, is welded on 4 and supports on steel pole, in order to lay circular cone top cover; Described circular cone top cover is stainless steel lid, can take off, and falls in device in order to prevent rainwater, external impurities etc.
The invention has the beneficial effects as follows:
1, the present invention achieves real-time, continuous, the grade monitoring to depression layer each in mined-out region simultaneously.
2, the present invention has the advantages that precision is high, can monitor continuously, can predict that development, the more science of mined-out region study the Subsidence law of mined-out region exactly more accurately and effectively.
3, by taking safeguard measure to the Surface structure that the present invention can may affect subsidence area in time or take control measures to mined-out region targetedly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the structural representation of the embodiment of the present invention two.
Fig. 3 is the structural representation of the embodiment of the present invention three.
Fig. 4 is casing above ground portion schematic perspective view.
Fig. 5 is the measure portion enlarged diagram of embodiment one.
Fig. 6 is the measure portion enlarged diagram of embodiment two.
Wherein: 1-monitoring hole, 2-base steel seat casing, 3-annular protrusion, 4-protective sheet, 5-O-ring seal, 6-ball, 7-constant speed depression layer casing, 8-pad, 9-the first stiff end, 10-the first tape measure, 11-depression layer casing at a slow speed, 12-the second stiff end, 13-the second tape measure, 14-dead slow speed depression layer casing, 15-the three stiff end, 16-the three tape measure, 17-support steel pole, 18-pulley, 19-little pointer, 20-counterweight sliding weight of steelyard, 21-annular steel ring, 22-circular cone top cover, 23-rotating disk, 24-rotating shaft, 25-large pointer, 26-A-frame, 27-the first catoptron, 28-the second catoptron, 29-the three catoptron, 30-laser measurer, 31-laser beam.
Embodiment
Below in conjunction with accompanying drawing and each embodiment, the present invention is further elaborated.
Be illustrated in figure 1 the structural representation of the embodiment of the present invention one, depression monitoring system by monitoring hole 1, base steel seat casing 2, annular protrusion 3, protective sheet 4, O-ring seal 5, ball 6, constant speed depression layer casing 7, pad 8, first stiff end 9, first tape measure 10, at a slow speed depression layer casing 11, second stiff end 12, second tape measure 13, dead slow speed depression layer casing the 14, the 3rd stiff end 15, the 3rd tape measure 16, support steel pole 17, pulley 18, little pointer 19, counterweight sliding weight of steelyard 20, annular steel ring 21, circular cone top cover 22 form.
Wherein, described monitoring hole 1 is positioned on the base plate of coal mine gob, and its diameter is greater than and equals 300mm; Described base steel seat casing 2 is positioned at bottom monitoring hole 1, and its diameter is 200mm, is highly caving zone and fissure zone sum; The diameter of described constant speed depression layer casing 7 is 195mm, and the diameter of depression layer casing 11 is 190mm at a slow speed, and the diameter of dead slow speed depression layer casing 14 is 185mm, and each casing is made by stainless steel material; Described annular protrusion 3 is welded on base steel seat casing 2, constant speed depression layer casing 7, at a slow speed depression layer casing 11 and dead slow speed depression layer casing 14 respectively, its quantity must more than 3 circles, object is to be anchored in each self-corresponding layer position respectively by structure glue or sand-cement slurry effect, and fine sand or pitch are filled in the space outside each casing except annular protrusion and between monitoring hole, fracture in order to prevent local deformation; Described constant speed depression layer casing 7, at a slow speed depression layer casing 11 and dead slow speed depression layer casing 14 are nested in base steel seat casing 2, constant speed depression layer casing 7 and at a slow speed in depression layer casing 11 respectively by O-ring seal 5 and ball 6, wherein O-ring seal 5 is rubber seal, seal, the stainless shot of ball 6 to be diameters be 2.5mm, so that the relative sliding between each casing; Described base steel seat casing 2, constant speed depression layer casing 7 and at a slow speed inner edge, depression layer casing 11 top be welded with protective sheet 4, in order to the wear-out failure preventing periphery foreign material from producing O-ring seal, bottom outer-edge is welded with pad 8, prevents the unexpected slippage of ball;
Described first stiff end 9 is constant speed depression layer stiff end, the second stiff end 12 is depression layer stiff end at a slow speed, be welded on constant speed depression layer casing 7 respectively and at a slow speed bottom depression layer casing 11, and require that the first stiff end 9 to the distance of depression layer casing 11, second stiff end 12 to dead slow speed depression layer casing 14 bottom gasket at a slow speed will be greater than the depression length of depression layer and dead slow speed depression layer at a slow speed respectively; Described 3rd stiff end 15 is dead slow speed depression layer stiff end, is welded on dead slow speed depression layer casing 14 middle and upper part, can saves certain material; Described constant speed depression layer casing 7 initial placement is in base steel seat casing 2 top, and certain ball can be laid in the overlay region of two casings; Will stretch into constant speed depression layer casing 7 certain distance during the described layer of depression at a slow speed casing 11 initial placement, this development length is greater than constant speed depression layer casing 7 with depression layer casing 11 at a slow speed because of different the produced Relative sliding distance of rate of subsidence; Depression layer casing 11 certain distance at a slow speed will be stretched into during described dead slow speed depression layer casing 14 initial placement, this development length is greater than depression layer casing 11 and dead slow speed depression layer casing 14 at a slow speed, because of different the produced Relative sliding distance of rate of subsidence, so would not there is discrepancy between casing.Described first tape measure 10, second tape measure 13 and the 3rd tape measure 16 are made up of flexible stainless steel material, it there is scale, minimum scale is 1mm, one end of each tape measure is separately fixed at the first stiff end 9, on second stiff end 12 and the 3rd stiff end 15, the other end is connected with counterweight sliding weight of steelyard 20 by pulley 18, wherein the pulley 18 of each depression layer is identical with counterweight sliding weight of steelyard 20 unitized construction, and pulley 18 is 2, there is a fixed little pointer 19 on pulley 18 side simultaneously on counterweight sliding weight of steelyard, be convenient to concrete numerical value when reading depression monitoring, the difference of the numerical value of each time point is exactly the sinkage in this time interval, as shown in Figure 5, the welding of described dead slow speed depression layer casing 14 top supports steel pole 17, and supporting steel pole 17 has 4, is welded on dead slow speed depression layer casing 14 respectively at four direction, in order to support annular steel ring 21 and on circular cone top cover 22, as shown in Figure 4, described annular steel ring 21 is made up of stainless steel material, is welded on 4 and supports on steel pole 17, in order to lay circular cone top cover 22, described circular cone top cover 22 is stainless steel lid, in order to prevent rainwater, external impurities etc. from falling in device, can take off where necessary.
The implementation method of the embodiment of the present invention one is:
1) beat monitoring hole 1 from ground until gob floor, bottom monitoring hole 1, arrange base steel seat casing 2, and be anchored in country rock by welding annular protrusion 3 thereon under structure glue or sand-cement slurry effect;
2) constant speed depression layer casing 7, at a slow speed depression layer casing 11 and dead slow speed depression layer casing 14 are respectively by O-ring seal 5 and mutually nested layer by layer between ball 6 with base steel seat casing 2, and each via annular protrusion 3 and affiliated layer anchoring;
3) respectively by the first stiff end 9 and the first tape measure 10, second stiff end 12 and the second tape measure 13, the 3rd stiff end 15 and the 3rd tape measure 16, realize real-time, continuous, to read to small scale (grade) constant speed depression layer, at a slow speed depression layer and dead slow speed depression layer in mined-out region depression numerical value by ground block 18 and counterweight sliding weight of steelyard 20 unitized construction, obtain the monitoring materials such as the sinkage at depression changing trend diagram and different time interval.
Be illustrated in figure 2 the structural representation of the embodiment of the present invention two, itself and the difference of embodiment one are that their measure portion is different, be illustrated in figure 6 the measure portion enlarged diagram of embodiment two, be specially the depression monitoring of depression layer at a slow speed, namely one end of the second tape measure 13 is fixed on the second stiff end 12, the other end is wrapped on rotating disk 23, rotating disk 23 is fixed on A-frame 26 by rotating shaft 24, a fixed large pointer 25 is had at A-frame 26 and rotating shaft 24 junction, be convenient to concrete numerical value when reading depression monitoring, the difference of the numerical value of each time point is exactly the sinkage in this time interval, in specific implementation process, along with the depression of depression layer casing 11 at a slow speed, the second tape measure 13 declines gradually, reads the numerical value on corresponding second tape measure 13 by large pointer 25, its variable quantity is sinkage, and the depression monitoring principle of constant speed depression layer and dead slow speed depression layer is identical therewith.
The implementation method of embodiment two slightly changes on the basis of embodiment one, for:
1) beat monitoring hole 1 from ground until gob floor, bottom monitoring hole 1, arrange base steel seat casing 2, and be anchored in country rock by welding annular protrusion 3 thereon under structure glue or sand-cement slurry effect;
2) constant speed depression layer casing 7, at a slow speed depression layer casing 11 and dead slow speed depression layer casing 14 are respectively by O-ring seal 5 and mutually nested layer by layer between ball 6 with base steel seat casing 2, and each via annular protrusion 3 and affiliated layer anchoring;
3) respectively by the first stiff end 9 and the first tape measure 10, second stiff end 12 and the second tape measure 13, the 3rd stiff end 15 and the 3rd tape measure 16, realize real-time, continuous, to read to small scale (grade) constant speed depression layer, at a slow speed depression layer and dead slow speed depression layer in mined-out region depression numerical value by ground A-frame 26, rotating shaft 24 and rotating disk 23 unitized construction, obtain the monitoring materials such as the sinkage at depression changing trend diagram and different time interval.
Be illustrated in figure 3 the structural representation of the embodiment of the present invention three, the difference of itself and embodiment one and embodiment two is, what embodiment three adopted is laser measurement, namely on the basis of embodiment one and embodiment two, the first stiff end 9, second stiff end 12 and the 3rd stiff end 15 change over the first catoptron 27 respectively, second catoptron 28 and the 3rd catoptron 29, do not need tape measure and ground survey unitized construction part, change laser measurer 30 into, its principle is, laser measurer 30 is by Emission Lasers light beam 31 respectively to the first catoptron 27, second catoptron 28 and the 3rd catoptron 29, by calculating the change of laser light path, corresponding sinkage can be obtained, embodiment three is compared with embodiment one or embodiment two, although also achieve the sinkage monitoring of each layer of mined-out region, monitoring continuity exists certain weak tendency.
The implementation method of embodiment three is:
1) beat monitoring hole 1 from ground until gob floor, bottom monitoring hole 1, arrange base steel seat casing 2, and be anchored in country rock by welding annular protrusion 3 thereon under structure glue or sand-cement slurry effect;
2) constant speed depression layer casing 7, at a slow speed depression layer casing 11 and dead slow speed depression layer casing 14 are respectively by O-ring seal 5 and mutually nested layer by layer between ball 6 with base steel seat casing 2, and each via annular protrusion 3 and affiliated layer anchoring;
3) laser measurer 30 is respectively by the laser ranging to the first catoptron 27, second catoptron 28 and the 3rd catoptron 29, realize real-time, continuous, to read to small scale (grade) constant speed depression layer, at a slow speed depression layer and dead slow speed depression layer in mined-out region depression numerical value, obtain the monitoring materials such as the sinkage at depression changing trend diagram and different time interval.
Supplementing as above-described embodiment one and embodiment two, the configurable shooting of this monitoring system and data store, transmission system, by the shooting to the first tape measure 10, second tape measure 13 and the 3rd tape measure 16, and real-time Transmission is to client terminal, add the image memory function of configuration, so just can realize the remote monitoring to the depression of mined-out region rock stratum.
Supplementing as above-described embodiment three, this monitoring system configurable data stores, transmission system, the real-time data transmission measured to client terminal, can realize the remote monitoring to each layer depression of mined-out region.
Finally should be noted that; above content is only for illustration of technical scheme of the present invention; but not its protection domain is limited, all any simple modification of carrying out according to technical solution of the present invention or equivalently to replace, all do not depart from the effective range of technical solution of the present invention.
Claims (8)
1. the method utilizing depression monitoring system to carry out mined-out region depression monitoring, it is characterized in that, this depression monitoring system is by monitoring hole (1), base steel seat casing (2), annular protrusion (3), protective sheet (4), O-ring seal (5), ball (6), constant speed depression layer casing (7), pad (8), first stiff end (9), first tape measure (10), depression layer casing (11) at a slow speed, second stiff end (12), second tape measure (13), dead slow speed depression layer casing (14), 3rd stiff end (15), 3rd tape measure (16), support steel pole (17), pulley (18), little pointer (19), counterweight sliding weight of steelyard (20), annular steel ring (21), circular cone top cover (22) forms,
Described monitoring hole (1) is positioned on the base plate of coal mine gob, and base steel seat casing (2) is positioned at monitoring hole (1) bottom; Described annular protrusion (3) is welded on base steel seat casing (2), constant speed depression layer casing (7), at a slow speed depression layer casing (11) and dead slow speed depression layer casing (14) respectively, and is anchored in each self-corresponding layer position respectively by structure glue or sand-cement slurry effect; Described base steel seat casing (2), constant speed depression layer casing (7) and at a slow speed depression layer casing (11) top have protective sheet (4); Described constant speed depression layer casing (7), at a slow speed depression layer casing (11) and dead slow speed depression layer casing (14) are nested in base steel seat casing (2), constant speed depression layer casing (7) and at a slow speed in depression layer casing (11) respectively by O-ring seal (5) and ball (6); Described constant speed depression layer casing (7), at a slow speed depression layer casing (11) and dead slow speed depression layer casing (14) bottom are provided with pad (8); Described first stiff end (9) and the second stiff end (12) be welded on respectively constant speed depression layer casing (7) and at a slow speed depression layer casing (11) bottom, the 3rd stiff end (15) is welded on the middle and upper part of dead slow speed depression layer casing (14); Described first tape measure (10), the second tape measure (13), the 3rd tape measure (16) one end are separately fixed on the first stiff end (9), the second stiff end (12) and the 3rd stiff end (15), and the other end is connected with counterweight sliding weight of steelyard (20) by pulley (18); Described little pointer (19) is fixed on pulley (18) side above counterweight sliding weight of steelyard (20); The welding of described dead slow speed depression layer casing (14) top supports steel pole (17), in support steel pole (17) welded top annular steel ring (21), circular cone top cover (22) is placed on annular steel ring (21);
Described monitoring method is:
1) monitoring hole (1) is played from ground until gob floor, arrange base steel seat casing (2) in monitoring hole (1) bottom, and be anchored in country rock by welding annular protrusion (3) thereon under structure glue or sand-cement slurry effect;
2) constant speed depression layer casing (7), at a slow speed depression layer casing (11) and dead slow speed depression layer casing (14) are respectively by O-ring seal (5) and mutually nested layer by layer between ball (6) with base steel seat casing (2), and each via annular protrusion (3) and affiliated layer anchoring;
3) respectively by the first stiff end (9) and the first tape measure (10), the second stiff end (12) and the second tape measure (13), the 3rd stiff end (15) and the 3rd tape measure (16), realize real-time, continuous, that grade ground reads constant speed depression layer, at a slow speed depression layer and dead slow speed depression layer in mined-out region depression numerical value by ground block (18) and counterweight sliding weight of steelyard (20) unitized construction, obtain the monitoring materials such as the sinkage at depression changing trend diagram and different time interval.
2. a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring according to claim 1, is characterized in that, the diameter of described monitoring hole (1) is greater than and equals 300mm; The diameter of described base steel seat casing (2) is 200mm, is highly caving zone and fissure zone sum; The diameter of described constant speed depression layer casing (7) is 195mm, and the diameter of depression layer casing (11) is 190mm at a slow speed, and the diameter of dead slow speed depression layer casing (14) is 185mm, and each casing is made by stainless steel material.
3. a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring according to claim 1 and 2, it is characterized in that, the annular protrusion (3) that described base steel seat casing (2), constant speed depression layer casing (7), at a slow speed depression layer casing (11) and dead slow speed depression layer casing (14) outside are welded is at least 3 circles; Described O-ring seal (5) is rubber seal, the stainless shot of ball (6) to be diameter be 2.5mm; Described protective sheet (4) is welded in inner edge, each casing top; Described pad (8) is welded in each casing bottom outer-edge.
4. a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring according to claim 1, it is characterized in that, described base steel seat casing (2), constant speed depression layer casing (7), at a slow speed depression layer casing (11) and dead slow speed depression layer casing (14) the outside space except annular protrusion (3) and between monitoring hole (1) fill fine sand or pitch.
5. a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring according to claim 1 and 2, it is characterized in that, described first stiff end (9) is constant speed depression layer stiff end, second stiff end (12) is depression layer stiff end at a slow speed, be welded on respectively constant speed depression layer casing (7) and at a slow speed depression layer casing (11) bottom, 3rd stiff end (15) is dead slow speed depression layer stiff end, be welded on dead slow speed depression layer casing (14) middle and upper part, wherein the first stiff end (9) depression layer casing (11) extremely at a slow speed, second stiff end (12) to the distance of dead slow speed depression layer casing (14) bottom gasket (8) will be greater than the depression length of depression layer and dead slow speed depression layer at a slow speed respectively.
6. a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring according to claim 1 and 2, is characterized in that, described constant speed depression layer casing (7) initial placement is in base steel seat casing (2) top; Will stretch into constant speed depression layer casing (7) certain distance during the described layer of depression at a slow speed casing (11) initial placement, this distance is greater than constant speed depression layer casing (7) with depression layer casing (11) at a slow speed because of different the produced Relative sliding distance of rate of subsidence; Depression layer casing (11) certain distance at a slow speed will be stretched into during described dead slow speed depression layer casing (14) initial placement, this distance be greater than at a slow speed depression layer casing (11) and dead slow speed depression layer casing (14) because of different the produced Relative sliding distance of rate of subsidence.
7. a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring according to claim 1, it is characterized in that, described first tape measure (10), the second tape measure (13) and the 3rd tape measure (16) are made up of flexible stainless steel material, it has scale, and minimum scale is 1mm; The pulley (18) of described each depression layer correspondence is identical with counterweight sliding weight of steelyard (20) unitized construction, and its middle pulley (18) is 2; Pulley (18) side of described little pointer (19) on counterweight sliding weight of steelyard (20) maintains static.
8. a kind of method utilizing depression monitoring system to carry out mined-out region depression monitoring according to claim 1, it is characterized in that, described support steel pole (17) is 4 stainless steel steel poles, is welded on dead slow speed depression layer casing (14) respectively at four direction; Described annular steel ring (21) is made up of stainless steel material, is welded on 4 and supports on steel pole (17); Described circular cone top cover (20) is stainless steel lid, can take off.
Priority Applications (1)
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