CN203837993U - Laboratory simulation manufacturing device for mine soft rock grouting test piece - Google Patents
Laboratory simulation manufacturing device for mine soft rock grouting test piece Download PDFInfo
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- CN203837993U CN203837993U CN201420249972.XU CN201420249972U CN203837993U CN 203837993 U CN203837993 U CN 203837993U CN 201420249972 U CN201420249972 U CN 201420249972U CN 203837993 U CN203837993 U CN 203837993U
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- grouting
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Abstract
The utility model discloses a laboratory simulation manufacturing device for a mine soft rock grouting test piece and belongs to the field of geotechnical engineering. The device consists of a test piece loading system, a slurry stirring system, a grouting system and a monitoring system, wherein the test piece loading system can be used for fixing the manufactured soft rock test piece on a loading oil cylinder, the slurry stirring system and the grouting system simulate a field grouting environment for grouting, the monitoring system can ensure the normal operation of the whole process, and a permeate water receiving and metering device can accurately measure permeate water in the grouting process. The device disclosed by the utility model applies a confining pressure and an axial pressure to the soft rock test piece by virtue of the loading oil cylinder and a hydraulic jack so as to simulate a three-axial environment of the soft rock test piece. The grouting system can fully ensure the grouting pressure and the slurry stirring system can ensure that slurry entering a grouting machine is uniform and reliable in the whole process so as to accurately simulate the field construction environment, so that the manufactured rock grouting test piece is relatively close to an actual site, so that a ground for subsequent field grouting construction can be provided.
Description
Technical field
The utility model relates to test specimen producing device, relates in particular to a kind of mine soft rock slip casting specimen chamber internal mold and intends producing device.
Background technology
In the fields such as mine, tunnel, side slope and Hydraulic and Hydro-Power Engineering, soft rock for its engineering stability impact significantly, is mainly manifested in: (1) soft rock mechanics intensity is lower, occurs that the possibility of the disaster such as large deformation and unstable failure is large; (2) soft rock is how containing karst water, and its aggressivity to supporting is stronger, affects engineering serviceable life.Practice shows, for soft rock mass, the supporting means such as general anchor, net, canopy, frame are difficult to effectively control its deformation failure, and on-the-spot anchor pole-slip casting (being called for short anchor note) reinforcement means that adopt carry out modification to soft rock more, strengthen thereby make to be noted rock mass mechanics character, deformation failure is alleviated.
Slip casting link when anchor note is the key of soft rock reinforcing engineering success or not, and in research grouting and reinforcing process, slurries Diffusion Law and infiltration water variation characteristic are the bases of analyzing grouting mechanism, and test specimen after slip casting is carried out to the prerequisite that mechanical test is research slip casting effect.At present, along with the progress of slip casting machinery, material and technique, slurry injection technique is developed rapidly, but grouting mechanism development but relatively lags behind, and can not scientificlly and effectively instruct slip casting practice, has caused the drawback of site operation by empirical estimating.
In order effectively to instruct slip casting practice, conventionally on-the-spot soft rock test specimen need to be taken to the indoor slip casting of carrying out, test specimen after slip casting is researched and analysed again, determine in slip casting process, slurries type with by matching relationship, grouting pressure and the slip casting time etc. of note medium, thereby provide foundation for later site operation slip casting.
China Patent Publication No. (ZL200720310235.6) discloses a kind of " high pressure slip-casting pilot model apparatus ", while utilizing this device slip casting, only can consider uniaxial compression and grouting pressure, can not consider confined pressure impact, and can not ensure that slurries evenly inject by note test specimen, cause the rock sample after slip casting to be difficult to simulate actual slip casting environment, cannot accurately determine on-the-spot grouting parameter.
For these reasons, be necessary to design a kind of method for making that considers confined pressure, axial compression, grouting pressure and chemosmotic rock grouting test specimen.
Utility model content
In order scientificlly and effectively to instruct slip casting practice, determine grouting parameter, for site operation slip casting later provides foundation, the utility model provides a kind of mine soft rock slip casting specimen chamber internal mold to intend producing device, utilize this device at the actual slip casting environment of indoor abundant simulated field, to produce the soft rock slip casting test specimen that is applicable to researching and analysing.
For achieving the above object, mine soft rock slip casting specimen chamber internal mold of the present utility model is drawn up and as apparatus structure is:
This device is made up of test specimen loading system, slurry agitation system, filling system and monitoring system;
Described test specimen loading system comprises a base and four test frameworks that column is welded to form, test framework is provided with vertical for laying the load cylinder of soft rock test specimen, the base of test framework is provided with hydraulic jack, and load cylinder and hydraulic jack withstand on same axis; Bottom in load cylinder is provided with rigidity entity pallet, the bottom surface of rigidity entity pallet and hydraulic jack top contact; The top of load cylinder is provided with hydraulic loaded control device, and hydraulic loaded control device is connected with high-strength bolt with load cylinder;
Described slurry agitation system is in agitator, to be provided with paddle wheel, and paddle wheel is realized agitating function by manual rocking bar; Agitator top is provided with material inlet, and material inlet top is provided with material lid, and both are threaded connection;
Described filling system comprises high-pressure injection pump, the import of high-pressure injection pump is communicated with agitator, high-pressure slip-casting delivery side of pump connects high pressure resistant pipeline, high pressure resistant pipeline stretches into hydraulic loaded control device and is connected with Grouting Pipe, and the outer rim that high pressure resistant pipeline is connected with hydraulic loaded control device adopts flange airtight; Pressure duct is provided with tensimeter, surplus valve and high pressure valve;
Described monitoring system comprises that pressure transducer, infiltration water pipeline and infiltration water receive measuring apparatus, pressure transducer is connected with outside pressure signal receiving trap by data line, infiltration water pipeline contacts with the piston of load cylinder through load cylinder outer wall, makes infiltration water flow into infiltration water by infiltration water pipeline and receives in measuring apparatus.
The method of utilizing said apparatus to make mine soft rock slip casting test specimen at lab simulation is as follows:
The first step, makes soft rock test specimen
The soft rock of preparing test is made to soft rock test specimen by standard size, on soft rock test specimen, bore grouting hole, in grouting hole, insert Grouting Pipe, pressure transducer is pasted on soft rock test specimen, and connect upper data line;
Second step, is fixed on soft rock test specimen on load cylinder
Open the connection between hydraulic loaded control device and load cylinder, soft rock test specimen is put into load cylinder and is accurately placed on the rigidity perviousness piston of load cylinder, rigidity packing ring is installed on soft rock test specimen, high pressure resistant pipeline is passed to flange and hydraulic loaded control device, and be connected firmly with Grouting Pipe;
The 3rd step derives and connects flange by the data line of pressure transducer along the pressure duct of filling system from hydraulic loaded control device, then load cylinder and hydraulic loaded control device is connected firmly with high-strength bolt;
The 4th step, cut-in pressure sensor and pressure signal receiving trap;
The 5th step, returns to zero to tensimeter;
The 6th step, opens material lid, pours slip casting material and water into slurry agitation bucket, and rotation manual rocking bar, makes slurry agitation even, in whipping process, can close material lid;
The 7th step, open load cylinder, make oil evenly fill up the gap between soft rock test specimen and oil cylinder, driving hydraulic loaded control device and hydraulic jack is that soft rock test specimen loads, the confined pressure of simulated field and axial compression, in the time that the force value of pressure receiving trap reaches the trial value that need to press in analog, shut-down operation hydraulic loaded control device and hydraulic jack, confined pressure and the axial compression of soft rock test specimen are remained unchanged, simulate on-the-spot slip casting environment;
The 8th step, sets grouting pressure trial value and the slip casting time of a series of correspondences according to on-site experience;
The 9th step, select one group of corresponding grouting pressure trial value and slip casting time as setting test value, then close high pressure valve, open grouting pump, in the time that the pressure of grouting pressure table reaches setting test value, open high pressure valve, make high pressure slurries inject soft rock test specimen, in the time reaching slurry time setting test value, stop slip casting, after initial set, take out soft rock slip casting test specimen, carry out maintenance; In slip casting process, infiltration water receiving trap quantitatively receives the infiltration water producing in slip casting process, i.e. free water; In this process, must shake manual rocking bar always, even to ensure to enter the grout coordinate ratio of high-pressure injection pump;
The tenth step, according to the tenth one step process, produces the different grouting pressure trial values of many groups and the soft rock slip casting test specimen under the slip casting time, and carries out maintenance;
The 11 step, carries out respectively Experiments of Machanics by all groups of good soft rock slip casting test specimens of maintenance, and according to amount of seepage, slurry water ash, when soft rock test specimen water percentage analysis draws water transform rule in slip casting process; Finally experimental result analysis is optimized to the grouting parameter that is applicable to site operation slip casting, comprise slurries type and matching relationship, grouting pressure and the slip casting time of being noted medium.
Good effect of the present utility model:
1, by the effect of load cylinder and hydraulic jack, soft rock test specimen is imposed to confined pressure and axial compression, three axle collar borders of simulation soft rock test specimen, filling system can fully ensure grouting pressure, it is evenly reliable that slurry agitation system can ensure that overall process enters the slurries of slip casting machine, thereby accurately simulated field construction environment, makes the rock grouting test specimen of making more be close to on-the-spot reality, for site operation slip casting later provides foundation.
2, the monitoring system of the utility model setting can ensure that the whole process of test normally carries out, and receives the infiltration water of measuring apparatus in can accurate-metering slip casting process by infiltration water, and then water transform rule in analysis slip casting process.
3, the utility model is applied widely, the on-the-spot slip casting surrouding rock stress data that only need provide, just can utilize the utility model method to produce the soft rock slip casting test specimen of simulated field construction environment, according to soft rock slip casting test specimen mechanical analysis result and then optimize and be applicable to on-the-spot best grouting parameter, for mine slip casting provides a kind of method of practical convenient.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model mine soft rock slip casting specimen chamber internal mold is intended producing device, there is shown the load condition of test specimen;
Fig. 2 is the utility model A-A directional profile figure.
Wherein, 1, manual rocking bar; 2, agitator; 3, material inlet; 4, material lid; 5, pipeline; 6, high-pressure injection pump; 7, surplus valve; 8, pressure signal receiving trap; 9, high pressure resistant pipeline; 10, data line; 11, tensimeter; 12, high pressure valve; 13, flange; 14, hydraulic loaded control device; 15, rigidity packing ring; 16, soft rock test specimen; 17, column; 18, Grouting Pipe; 19, load cylinder support; 20, load cylinder; 21, gap; 22, infiltration water pipeline; 23, pressure transducer; 24, support; 25, infiltration water receives measuring apparatus; 26, hydraulic jack; 27, base; 28, rigidity entity pallet; 29, rigidity perviousness piston; 30, paddle wheel; 31, rolling bearing.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical solutions of the utility model are described further.
The utility model mine soft rock slip casting specimen chamber internal mold is as depicted in figs. 1 and 2 intended producing device, is made up of test specimen loading system, slurry agitation system, filling system and monitoring system;
Described test specimen loading system comprises by base 27 and four test frameworks that column 17 is welded to form, test framework is provided with vertical load cylinder 20, load cylinder 20 is arranged on test framework by load cylinder support 19, the base 27 of test framework is provided with hydraulic jack 26, and load cylinder and hydraulic jack 26 are on same axis; Bottom in load cylinder 20 is provided with rigidity entity pallet 28, and the bottom surface of rigidity entity pallet 28 is connected with hydraulic jack 26; The top of load cylinder 20 is provided with hydraulic loaded control device 14, and hydraulic loaded control device 14 is connected with load cylinder 20 use high-strength bolts; In load cylinder 20, arrange soft rock test specimen 16; Soft rock test specimen 16 internal placement Grouting Pipe 18, oil removal membrane closure is used on soft rock test specimen 16 surfaces, in the gap 21 of soft rock test specimen 16 and load cylinder 20, is full of hydraulic oil, to realize, the confined pressure of soft rock test specimen is loaded; Be provided with rigidity packing ring 15 at soft rock test specimen 16 end faces, bottom surface is provided with rigidity perviousness piston 29, all sides of rigidity packing ring 15 and rigidity perviousness piston 29 are provided with packoff.
Described slurry agitation system is in agitator 2, to be provided with to mix impeller 30, and paddle wheel 30 is realized agitating function by manual rocking bar 1, and manually rocking bar 1 is arranged on agitator 2 by rolling bearing 31; Agitator 2 tops are provided with material inlet 3, and material inlet 3 tops are provided with material lid 4, and both are threaded connection.
Described filling system comprises high-pressure injection pump 6, the import of high-pressure injection pump 6 is communicated with agitator 2 by pipeline 5, high-pressure injection pump 6 is connected with high pressure resistant management 9, high pressure resistant pipeline 9 is connected with hydraulic loaded control device 14 by flange 13 and stretches into hydraulic loaded control device 14, and then is communicated with the Grouting Pipe 18 of soft rock test specimen inside;
Described monitoring system is on high pressure resistant pipeline 9, to be provided with surplus valve 7, tensimeter 11 and high pressure valve 12, is pasted with pressure transducer 23 on soft rock test specimen, and pressure transducer 23 is connected with outside pressure signal receiving trap 8 by data line 10; Monitoring system also comprises infiltration water pipeline 22 and is arranged on the infiltration water reception measuring apparatus 25 on support 24, infiltration water pipeline 22 contacts with rigidity perviousness piston 29 through load cylinder 20 outer walls, makes infiltration water flow into infiltration water by this pipeline and receives in measuring apparatus 25.
The method of utilizing said apparatus to make mine soft rock slip casting test specimen at lab simulation is as follows:
The first step, makes soft rock test specimen 16 by the soft rock of preparing test by standard size, bores grouting hole on soft rock test specimen 16, according to testing requirements, pressure transducer 23 is pasted on soft rock test specimen 16, and connects upper data line 10;
Second step, open between hydraulic loaded control device 14 and load cylinder 20 and connect, put into successively rigidity entity pallet 28 and rigidity perviousness piston 29, connect infiltration water pipeline 22, soft rock test specimen 16 is put into load cylinder 20 and is accurately placed on rigidity perviousness piston 29, rigidity packing ring 15 is installed on soft rock test specimen 16;
The 3rd step, connect Grouting Pipe 18 and high pressure resistant pipeline 9, and both are connected firmly by flange 13 and hydraulic loaded control device 14, Grouting Pipe 18 is inserted in the grouting hole of soft rock test specimen 16, data line 10 is derived from hydraulic loaded control device 14 along grouting pipeline, then load cylinder 20 and hydraulic loaded control device 14 use high-strength bolts are connected firmly;
The 4th step, receives measuring apparatus 25 by infiltration water and is arranged on infiltration water receiving trap support 24, and infiltration water pipeline 22 is placed in to permeable reception measuring apparatus 25 inside;
The 5th step, is connected data line 10 with pressure transducer receiving trap 8;
The 6th step, is connected by connecting line 5 high-pressure injection pump 6 with slurry agitation bucket 2, grouting pump 6 is connected with high pressure resistant pipeline 9, setting pressure table 11, surplus valve 7 and high pressure valve 12 on high pressure resistant pipeline, and tensimeter 11 is returned to zero;
The 7th step, opens material lid 4, pours slip casting material and water into slurry agitation bucket 2, and rotation manual rocking bar 1, makes slurry agitation even, in whipping process, can close material lid 4;
The 8th step, open load cylinder 20, make oil evenly fill up the gap 21 between soft rock test specimen 16 and oil cylinder, drive hydraulic loaded control device 14 and hydraulic jack 26 to load for soft rock test specimen 16, the confined pressure of simulated field and axial compression, in the time that the force value of pressure receiving trap 8 reaches the trial value that need to press in analog, shut-down operation hydraulic loaded control device 14 and hydraulic jack 26, confined pressure and the axial compression of soft rock test specimen 16 are remained unchanged, simulate on-the-spot slip casting environment;
The 9th step, sets grouting pressure trial value and the slip casting time of a series of correspondences according to on-site experience;
The tenth step: select one group of corresponding grouting pressure trial value and slip casting time as setting test value, then close high pressure valve 12, open grouting pump 6, in the time that the pressure of grouting pressure table 11 reaches setting test value, open high pressure valve 12, make high pressure slurries inject soft rock test specimen 16 by Grouting Pipe 18, when reaching the slip casting time when setting value, stop slip casting, after initial set, take out soft rock slip casting test specimen 16, carry out maintenance; In slip casting process, infiltration water receiving trap 25 quantitatively receives the infiltration water producing in slip casting process, i.e. free water; In this process, must shake manual rocking bar 1 always, even to ensure to enter the grout coordinate ratio of high-pressure injection pump 6;
The 11 step: according to the tenth one step process, produce the different grouting pressure trial values of many groups and the soft rock slip casting test specimen under the slip casting time, and carry out maintenance;
The 12 step: all groups of good soft rock slip casting test specimens of maintenance are carried out respectively to Experiments of Machanics, and when soft rock test specimen water percentage analysis draws water transform rule in slip casting process according to amount of seepage, slurry water ash; Finally experimental result analysis is optimized to the grouting parameter that is applicable to site operation slip casting, comprise slurries type and matching relationship, grouting pressure and the slip casting time of being noted medium.
Claims (1)
1. mine soft rock slip casting specimen chamber internal mold is intended a producing device, it is characterized in that, it is made up of test specimen loading system, slurry agitation system, filling system and monitoring system;
Described test specimen loading system comprises a base and four test frameworks that column is welded to form, test framework is provided with vertical for laying the load cylinder of soft rock test specimen, the base of test framework is provided with hydraulic jack, and load cylinder and hydraulic jack withstand on same axis; Bottom in load cylinder is provided with rigidity entity pallet, the bottom surface of rigidity entity pallet and hydraulic jack top contact; The top of load cylinder is provided with hydraulic loaded control device, and hydraulic loaded control device is connected with high-strength bolt with load cylinder;
Described slurry agitation system is in agitator, to be provided with paddle wheel, and paddle wheel is realized agitating function by manual rocking bar; Agitator top is provided with material inlet, and material inlet top is provided with material lid, and both are threaded connection;
Described filling system comprises high-pressure injection pump, the import of high-pressure injection pump is communicated with agitator, high-pressure slip-casting delivery side of pump connects high pressure resistant pipeline, high pressure resistant pipeline stretches into hydraulic loaded control device and is connected with Grouting Pipe, and the outer rim that high pressure resistant pipeline is connected with hydraulic loaded control device adopts flange airtight; Pressure duct is provided with tensimeter, surplus valve and high pressure valve;
Described monitoring system comprises that pressure transducer, infiltration water pipeline and infiltration water receive measuring apparatus, pressure transducer is connected with outside pressure signal receiving trap by data line, infiltration water pipeline contacts with the piston of load cylinder through load cylinder outer wall, makes infiltration water flow into infiltration water by infiltration water pipeline and receives in measuring apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249972.XU CN203837993U (en) | 2014-05-15 | 2014-05-15 | Laboratory simulation manufacturing device for mine soft rock grouting test piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249972.XU CN203837993U (en) | 2014-05-15 | 2014-05-15 | Laboratory simulation manufacturing device for mine soft rock grouting test piece |
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| CN203837993U true CN203837993U (en) | 2014-09-17 |
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| CN201420249972.XU Expired - Fee Related CN203837993U (en) | 2014-05-15 | 2014-05-15 | Laboratory simulation manufacturing device for mine soft rock grouting test piece |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467010B (en) * | 2015-12-16 | 2018-04-06 | 山东科技大学 | Relaxation zone test system and method based on rock water coincidence effect in soft rock drilling |
| CN108362859A (en) * | 2018-02-02 | 2018-08-03 | 山东科技大学 | A kind of experimental system for simulating old goaf grouting effect |
| CN108507922A (en) * | 2018-03-19 | 2018-09-07 | 山东科技大学 | Pressure anchor is allowed to note grouting in rock mass seepage flow and strengthening characteristic test method under coupling supporting |
| CN110261202A (en) * | 2019-07-25 | 2019-09-20 | 泉州装备制造研究所 | A kind of grouting sample preparation device |
-
2014
- 2014-05-15 CN CN201420249972.XU patent/CN203837993U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467010B (en) * | 2015-12-16 | 2018-04-06 | 山东科技大学 | Relaxation zone test system and method based on rock water coincidence effect in soft rock drilling |
| CN108362859A (en) * | 2018-02-02 | 2018-08-03 | 山东科技大学 | A kind of experimental system for simulating old goaf grouting effect |
| CN108507922A (en) * | 2018-03-19 | 2018-09-07 | 山东科技大学 | Pressure anchor is allowed to note grouting in rock mass seepage flow and strengthening characteristic test method under coupling supporting |
| CN110261202A (en) * | 2019-07-25 | 2019-09-20 | 泉州装备制造研究所 | A kind of grouting sample preparation device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20150515 |
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| EXPY | Termination of patent right or utility model |