CN106767662B - A kind of coal mine roadway country rock deep multipoint displacement meter - Google Patents
A kind of coal mine roadway country rock deep multipoint displacement meter Download PDFInfo
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- CN106767662B CN106767662B CN201610986473.2A CN201610986473A CN106767662B CN 106767662 B CN106767662 B CN 106767662B CN 201610986473 A CN201610986473 A CN 201610986473A CN 106767662 B CN106767662 B CN 106767662B
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- survey line
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- fixed block
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
- G01B2210/66—Rock or ground anchors having deformation measuring means
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Abstract
The invention discloses a kind of coal mine roadway country rock deep multipoint displacement meters, several measuring point fixed blocks including the interior different depth that drills is arranged in, survey line through-hole is set inside measuring point fixed block, the periphery at the middle part of measuring point fixed block is anchoring section, circumferentially several anchor studs are arranged in insertion to anchoring section, the medium position of survey line through-hole is fixed in survey line one end, readout instrument is installed at the aperture of drilling, the one of arm of readout instrument is fixed on the aperture of drilling, another arm is provided with transparent protection shell, scale plate and constant-resistance device are provided on protection shell, survey line is pressed on protection shell by constant-resistance device by fastener, card mark is provided on survey line.The present invention can quicklook read data, the acquisition country rock deep deformation information of quicklook；Measuring point is solid and reliable by resin anchoring, does not loosen, test data is accurate and reliable, low in cost；Low, common anchor cable rig pore-creating is required to mounting hole, pore-creating is at low cost rapidly；Without circuit, it is more suitable for underground coal mine environment.
Description
Technical field
The invention belongs to coal mine roadway Stability Surveilllance For Surrounding Rock field more particularly to a kind of coal mine roadway country rock deep multi-points
Move meter.
Background technique
Country rock deep soils are the important contents of coal mine roadway stability analysis, to judge country rock deep stable case
And plastic zone development and evolution state, and the secondary supportings process such as judge anchor cable, slip casting accordingly applies opportunity.Accurately, quickly, directly
The grasp country rock deep stable state of sight, it is particularly important for roadway support.
The coal mine multipoint displacement meter product applied at present is easily loosened there are measuring point causes the time-consuming expense of data distortion, reading data
The disadvantages of power, there is also with high costs, pore-creating difficult (installation aperture need to generally reach 70mm or more, need heavy duty drill pore-creating) etc.
Problem.Deep displacement meter measuring point easily loosens and causes the major reason of data distortion be: current deep multipoint displacement meter
The fixation of measuring point mostly uses cement grout or purely mechanic adhesion type, and cement slurry has apparent Brittleness, when drilling shrinkage cavity or
Measuring point loosening is easily caused when surrounding rock failure, and data distortion is caused to judge by accident.The best material of fixed measuring point is resin anchoring agent, it
Have the characteristics that high-strength and high ductility, but deep drill narrow space, positioning and anchoring operation difficulty is very big.In addition, current coal mine lane
Road country rock deep multipoint displacement meter lacks intuitive quickly data reading techniques means, and displacement data conversion need to be done at mass data
Reason, it is difficult to quickly judge wall rock loosening ring evolution situation in time, be easy to miss the best opportunity of the secondary supportings such as anchor cable, slip casting.
If a kind of deep multi-point displacement meter designing method of intuitive readability can be researched and developed, technical staff and unskilled labor can be grasped rapidly per capita
Deep wall rock stability state, must can for secondary supporting opportunity judgement and apply great convenience be provided.
Summary of the invention
The purpose of the present invention is be to provide a kind of coal mine roadway country rock deep in view of the above-mentioned problems existing in the prior art
Multipoint displacement meter.It can accurate, quick, intuitive monitoring roadway surrounding rock deep displacement.
A kind of coal mine roadway country rock deep multipoint displacement meter, several measuring points including the interior different depth that drills is arranged in are solid
Determine block, survey line through-hole is set inside measuring point fixed block, the periphery at the middle part of measuring point fixed block is anchoring section, and anchoring section is circumferentially embedded in
Several anchor studs are set, and anchor studs are anchored on the hole wall of drilling by resin anchoring agent, and one end is circumferentially set on measuring point fixed block
The groove of annular is set, annular groove winding packing limit cotton yarn, the medium position of survey line through-hole, phase are fixed in survey line one end
It is connected between adjacent measuring point fixed block by survey line protection sleeve pipe, apart windings limit cotton yarn in survey line protection sleeve pipe, drilling
Readout instrument, readout instrument generally L-type are installed, the one of arm of readout instrument is the cylinder that centre offers survey line guide hole at aperture
Shape and the aperture that drilling is fixed on by aperture resin anchoring agent, another arm are provided with transparent protection shell, protect shell
On be provided with scale plate and constant-resistance device, the two sides of scale plate are provided with survey line limiting card, and the two sides of constant-resistance device are provided with survey line limit
Position card, the survey line other end be successively pierced by close to drilling orifice side each measuring point fixed block survey line through-hole and along straight line successively
Survey line limiting card across the two sides of the survey line limiting card and constant-resistance device of the two sides of scale plate, constant-resistance device pass through fastener for survey line
It is pressed on protection shell, the part on survey line positioned at scale plate is provided with card mark.
The number of survey line guide hole as described above is more than or equal to the number of survey line, and different surveys line passes through different surveys line
Guide hole is coated with lubrication butter in survey line guide line.
The present invention compared with the existing technology, has the advantage that
1) can quicklook read data, the acquisition country rock deep deformation information of quicklook；
2) measuring point is solid and reliable by resin anchoring, does not loosen, test data is accurate and reliable, low in cost；
3) low, common anchor cable rig pore-creating is required to mounting hole, pore-creating is at low cost rapidly；
4) without circuit, it is more suitable for underground coal mine environment.
Detailed description of the invention
Fig. 1 (a) is overall structure figure of the invention；
Fig. 1 (b) is A1-A1 diagrammatic cross-section in Fig. 1 (a)；
Fig. 1 (c) is A2-A2 diagrammatic cross-section in Fig. 1 (a)；
Fig. 2 is the main view of readout instrument；
Fig. 3 is roadway surrounding rock deep displacement point layout schematic diagram；
Fig. 4 is readout instrument monitoring effect figure；In figure, what triangles from top to bottom indicated is the first measuring point, the second survey
The home position of the corresponding displacement indicateing arm of point, third measuring point, the 4th measuring point, the 5th measuring point, open triangles table from top to bottom
When what is shown is the measurement of the first measuring point, the second measuring point, third measuring point, the 4th measuring point, the corresponding displacement indicateing arm of the 5th measuring point
Current location；
Fig. 5 is country rock absolute displacement effect picture.
Wherein: 1- measuring point fixed block, 2- anchor studs, 3- groove, 4- packing limit cotton yarn, 5- survey line through-hole, 6a- first are surveyed
Line, the second survey line of 6b-, 7- drilling, 8- resin anchoring agent, 9- survey line protection sleeve pipe, 10- limit cotton yarn, 11- readout instrument, the hole 12-
Mouthful resin anchoring agent, 13- survey line guide hole, 14- survey line limiting card, 15- scale plate, 16- constant-resistance device, 17- readout instrument fixation hole,
18- is displaced indicateing arm, 19- protects shell, the aperture 20-, the first measuring point of 21-, the second measuring point of 22-, 23- third measuring point, 24- the 4th
Measuring point, the 5th measuring point of 25-.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
Embodiment 1
A kind of coal mine roadway country rock deep multipoint displacement meter, several measuring points including different depth in drilling 7 is arranged in
Fixed block 1, survey line through-hole 5 is arranged inside measuring point fixed block 1, and the periphery at the middle part of measuring point fixed block 1 is anchoring section, anchoring section week
Several anchor studs 2 are set to insertion, anchor studs 2 are anchored on the hole wall of drilling 7 by resin anchoring agent 8, on measuring point fixed block 1
The groove 3 of annular is circumferentially arranged in one end, and winding packing limit cotton yarn 4 at annular groove 3,6 one end of survey line is fixed on survey line and is led to
The medium position in hole 5 is connected by survey line protection sleeve pipe 9 between adjacent measuring point fixed block 1, is spaced in survey line protection sleeve pipe 9
Winding limit cotton yarn 10, installs readout instrument 11 at 7 aperture that drills, the generally L-type of readout instrument 11, readout instrument 11 one of those
Arm is that centre offers the tubular of survey line guide hole 13 and is fixed on the aperture of drilling by aperture resin anchoring agent 12, another
Arm is provided with transparent protection shell 19, protects and is provided with scale plate 15 and constant-resistance device 16, the two sides of scale plate 15 on shell 19
It is provided with survey line limiting card 14, the two sides of constant-resistance device 16 are provided with survey line limiting card 14, and 6 other end of survey line is successively pierced by close to brill
The survey line through-hole 5 of each measuring point fixed block 1 of 7 aperture side of hole and the survey line limit that the two sides of scale plate 15 are sequentially passed through along straight line
Survey line 6 is pressed in protection shell 19 by fastener by the survey line limiting card 14 of the two sides of position card 14 and constant-resistance device 16, constant-resistance device 16
On, the part on survey line 6 positioned at scale plate 15 is provided with card mark 18.
The number of survey line guide hole 13 is more than or equal to the number of survey line 6, and different surveys line 6 passes through different survey line guide holes
13, lubrication butter is coated in survey line guide line 13.
Preferably, measuring point fixed block 1 is made by rigid plastics, inside setting survey line through-hole 5, the middle part of measuring point fixed block 1
Periphery be anchoring section, circumferential 8~12 anchor studs 2 of insertion setting of anchoring section, anchor studs 2 are anchored on brill by resin anchoring agent 8
On the hole wall in hole 7, the groove 3 of the circumferential setting annular of one end, 3 2~4mm of depth of groove, annular groove on measuring point fixed block 1
Winding packing limit cotton yarn 4 at 3, packing limit the diameter after cotton yarn 4 is wound slightly larger than the diameter of drilling 7, can be wanted according to test
It asks and fixes a survey line 6 and number consecutively along 3~5 measuring point fixed blocks 1 of the long setting in hole to drill, each measuring point fixed block 1,
Survey line 6 is fixed on the inner wall medium position of survey line through-hole 5.It is connected, is prevented by survey line protection sleeve pipe 9 between measuring point fixed block 1
Later period drilling shrinkage cavity deformation touches survey line 6, and the end that the measuring point fixed block 1 at both ends is protruded into 9 end of survey line protection sleeve pipe is fixed, and is surveyed
Limit cotton yarn 10 is wound every 1~1.5m in line protection sleeve pipe 9, the diameter after limit cotton yarn 10 is wound is straight slightly larger than drilling 7
Diameter, survey line 6 are made of the flexible finer wire twisted wire of low-elongation, anti-corrosion, and survey line 6 is successively pierced by close to 7 aperture sides of drilling
The survey line through-holes 5 of other measuring point fixed blocks 1 draw the outside of drilling 7, readout instrument 11, reading are installed at 7 aperture that drills
The generally L-type of instrument 11, one of arm are the tubular that centre offers survey line guide hole 13, pass through aperture resin anchoring agent 12
It is fixed on aperture, as a preferred embodiment, the number of survey line guide hole 13 is identical as survey line 6, and different surveys line 6 passes through difference
Survey line guide hole 13, be coated with lubrication butter in survey line guide line 13；Another arm is transparent protection shell 19, and protection is outer
It is provided with scale plate 15 and constant-resistance device 16 on shell 19, the two sides of scale plate 15 are provided with survey line limiting card 14, and the two of constant-resistance device 16
Side is provided with survey line limiting card 14, and survey line one end sequentially passes through the survey line limiting card 14 and constant-resistance of the two sides of scale plate 15 along straight line
Survey line is pressed on protection shell 19 by the survey line limiting card 14 of the two sides of device 16, constant-resistance device 16 by fastener.Consolidated by readout instrument
Determine hole 17 and holdfast is installed to fix, the card mark 18 of red position adjustable is set on survey line 6 positioned at the part of scale plate 15, to refer to
Show the displacement of survey line 6, card 18 initial positions of mark of each survey line 6 are adjusted to zero groove of scale plate 15.
Packing limit cotton yarn 4 has certain compressibility, and effect can be close to drilling 7 when being installation, keeps measuring point fixed block 1
Positioned at the center of drilling 7, and when installation pushes resin anchoring agent 8 convenient for Anchor Agent packing molding；Limit the effect of cotton yarn 10
It is the center for making survey line protection sleeve pipe 9 remain in drilling 7 during installation.The effect of constant-resistance device 16 is by providing certain rub
It is in tight straight condition that resistance, which keeps survey line 6, but not prevents survey line 6 that slide displacement occurs.
Embodiment 2
Horizontal drilling is bored in certain portion, coal mine roadway side, drill depth 25m, arranges 5 measuring points, including the 1st measuring point, the 2nd survey
Point, the 3rd measuring point, the 4th measuring point, the 5th measuring point, depth are respectively 25m, 18m, 13m, 8m, 3m.Roadway surrounding rock deep displacement measuring point cloth
It sets as shown in figure 3, the data in readout instrument test process are as shown in Figure 4.Other are consistent with embodiment 1.
As shown in figure 4, the relative displacement that can intuitively read between the 1st measuring point and the 2nd measuring point is about 2mm, the 4th measuring point and
The relative displacement of 5 measuring points reaches 22mm, if data are excessive, and continuously growth rate quickly, illustrates within the scope of this in several days
Country rock plastic failure rate is very fast, and relaxation zone has extended so far region, or even there are the possibility of absciss layer, need to carry out secondary branch in time
Shield is reinforced, and using supporting measures such as slip casting and anchor cables, slip casting depth should cover this range, and complement anchor cable.
The acquisition of country rock deep absolute displacement need to be foundation based on the observation data of long-term record.It is believed that most deep in hole
The 1st measuring point it is static, absolute displacement zero, as basic point, other displacements of each measuring point with respect to the 1st measuring point are absolute position
It moves.Displacement inverse of the absolute displacement by each measuring point measured directly with respect to aperture obtains that (absolute displacement is to be directed toward direction in tunnel
It is positive).The calculation method of country rock absolute displacement is as follows at different location:
The absolute displacement in aperture: δ0=δ1'
The absolute displacement of measuring point i: δi=δ1'-δi'；
Wherein, δi' it is the i-th measuring point measured displacements value (i.e. each displacement of the measuring point with respect to aperture, i=1~5).
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (1)
1. a kind of coal mine roadway country rock deep multipoint displacement meter, including several measuring points in drilling (7) interior different depth are arranged
Fixed block (1), which is characterized in that survey line through-hole (5) are set inside measuring point fixed block (1), outside the middle part of measuring point fixed block (1)
Week is anchoring section, and circumferentially several anchor studs (2) are arranged in insertion to anchoring section, and anchor studs (2) are anchored on brill by resin anchoring agent (8)
On the hole wall in hole (7), the groove (3) of annular is circumferentially arranged in one end on measuring point fixed block (1), winds envelope at annular groove (3)
Every limit cotton yarn (4), the medium position of survey line through-hole (5) is fixed in survey line (6) one end, between adjacent measuring point fixed block (1)
It is connected by survey line protection sleeve pipe (9), apart windings limit cotton yarn (10) in survey line protection sleeve pipe (9), at the aperture of (7) that drills
It installs readout instrument (11), readout instrument (11) generally L-type, readout instrument (11) one of arm is that centre offers survey line guidance
The tubular in hole (13) and the aperture that drilling is fixed on by aperture resin anchoring agent (12), another arm are provided with transparent protection
Shell (19) is protected and is provided with scale plate (15) and constant-resistance device (16) on shell (19), and the two sides of scale plate (15) are provided with survey
Line limiting card (14), the two sides of constant-resistance device (16) are provided with survey line limiting card (14), and survey line (6) other end is successively pierced by close to brill
The survey line through-hole (5) of each measuring point fixed block (1) of hole (7) aperture side and the two sides that scale plate (15) are sequentially passed through along straight line
Survey line limiting card (14) and constant-resistance device (16) two sides survey line limiting card (14), constant-resistance device (16) is by fastener by survey line
(6) it is pressed in protection shell (19), the part on survey line (6) positioned at scale plate (15) is provided with card mark (18), survey line guide hole
(13) number is more than or equal to the number of survey line (6), and different survey line (6) passes through different survey line guide holes (13), and survey line draws
Lubrication butter is coated in guide hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986473.2A CN106767662B (en) | 2016-11-09 | 2016-11-09 | A kind of coal mine roadway country rock deep multipoint displacement meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610986473.2A CN106767662B (en) | 2016-11-09 | 2016-11-09 | A kind of coal mine roadway country rock deep multipoint displacement meter |
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| CN106767662A CN106767662A (en) | 2017-05-31 |
| CN106767662B true CN106767662B (en) | 2019-02-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057331A (en) * | 2019-04-26 | 2019-07-26 | 中国科学院武汉岩土力学研究所 | A kind of tunnel roadway surrounding rock surface and deep soils integrated apparatus and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163688B (en) * | 2018-08-17 | 2023-11-24 | 山东思科赛德矿业安全工程有限公司 | Three-base-point roof separation layer monitor |
| CN111927553B (en) * | 2020-08-06 | 2022-04-29 | 中铁隧道局集团有限公司 | Bidirectional claw anchoring device of multipoint displacement meter and radial displacement measurement method of TBM tunnel surrounding rock |
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| CN104316029A (en) * | 2014-11-14 | 2015-01-28 | 中国水利水电科学研究院 | Geological sedimentation monitoring device and monitoring method |
| CN104533395A (en) * | 2014-12-30 | 2015-04-22 | 晋能集团有限公司 | Mining intrinsically safe multi-point displacement meter |
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| CN1963375A (en) * | 2006-11-29 | 2007-05-16 | 四川大学 | Sleeve bore multidot tensiometer |
| CN101105387A (en) * | 2007-08-09 | 2008-01-16 | 中国科学院武汉岩土力学研究所 | Mechanical type multiple-point displacement gage |
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| CN110057331A (en) * | 2019-04-26 | 2019-07-26 | 中国科学院武汉岩土力学研究所 | A kind of tunnel roadway surrounding rock surface and deep soils integrated apparatus and method |
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