CN204492745U - Between monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting - Google Patents
Between monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting Download PDFInfo
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- CN204492745U CN204492745U CN201520020041.7U CN201520020041U CN204492745U CN 204492745 U CN204492745 U CN 204492745U CN 201520020041 U CN201520020041 U CN 201520020041U CN 204492745 U CN204492745 U CN 204492745U
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- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model provides a kind of hydraulic pressure of monitoring between two-layer compound Shaft Linings to determine the device of best time for injecting, the described two-layer compound borehole wall is by outer shaft wall, inner layer well wall and plastic sandwich are formed, also comprise Grouting Pipe, pressure monitoring pipe, hydraulic pressure sensor, control valve, wire and pressure testing and controlling instrument, described Grouting Pipe is horizontally set in inner layer well wall, pressure monitoring pipe is arranged with in described Grouting Pipe, described pressure monitoring pipe diameter is slightly less than the diameter of Grouting Pipe, one end of described pressure monitoring pipe is arranged between the outside of inner layer well wall and plastic sandwich, the other end of described pressure monitoring pipe is connected with hydraulic pressure sensor, described pressure monitoring pipe and hydraulic pressure sensor junction are provided with control valve, described hydraulic pressure sensor is connected with ground pressure testing and controlling instrument by wire.The utility model device not only can be avoided observing the amount of labour that between wall, water pressure is brought because frequently going into the well and increase and potential safety hazard, but also can accurately grasp best time for injecting easily.
Description
Technical field
The utility model belongs to slurry injection technique field between freeze-wellboring two-layer compound Shaft Linings, especially relates to a kind of hydraulic pressure of monitoring between two-layer compound Shaft Linings to determine the device of best time for injecting.
Background technology
In two-layer compound shaft lining structural construction process, often because its outer wall connects the existence of stubble seam and the cold seam of inner wall construction, occur gushing drainage after inside and outside wall construction terminates, water yield per hour is not by several cubes to dozens or even hundreds of cube etc., this not only constitutes a threat to the safety work of down-hole miner, and the safety of pit shaft self is constituted a latent danger, slip casting must be carried out to the borehole wall for this reason, when slurries inject between double-layer wall of well wall, it constantly spreads between wall, make crack between wall, connect stubble seam, cold seam of constructing is able to shutoff, cut off water conservancy relation between wall, make inner wall no swell drainage, ensure that safety work and the pit shaft inherently safe of down-hole miner.It is just very good that some shaft in wall jacket wall terminates rear once grouting stagnant water effect; and other pit shaft often wants repeatedly slip-casting; once; twice ..., this is mainly due to after inner layer well wall jacket wall completes, and Freezing Station is shut down; around the borehole wall, frozen soil starts to melt; after this in the wall clearance grouting water shutoff stage, the good time for injecting of accurate assurance, has vital impact to slip casting effect.Research finds: carry out wall clearance grouting too early, be often difficult to note into slurries, this is because frost wall thaws not yet completely, slurries diffusion is not smooth, and grouting amount is little, and slip casting will be caused not thorough; Slip casting is excessively slow; then due to after frost wall thaws; between wall, the water yield increases suddenly; increase slip casting difficulty and grouting amount; even sometimes, make inner side borehole wall partial fracture because of having to improve grouting pressure; even the assurance at present about the slip casting time does not also have systematic monitoring method; mainly empirically; after inner layer well wall is built mostly; Freezing Station shut down just start slip casting, but, slip casting note do not enter or most of slurries all overflow only have only a few note entered; effect is very bad, as long as after this inflow of water is greater than 10-15m
3just secondary grouting is carried out again during/h.
Utility model content
For solving the problems of the technologies described above, the utility model object there is provided a kind of hydraulic pressure of monitoring between two-layer compound Shaft Linings to determine the device of best time for injecting, accurate assurance time for injecting, before can thawing completely to frost wall after internal layer jacket wall terminates during this period of time in, by wire, down-hole hydraulic pressure data are transferred on the pressure monitoring instrument on ground in control room, avoiding frequently goes into the well observes water pressure between wall, the amount of labour increases and there is the problem of potential safety hazard, the best slip casting time is found additionally by Real-Time Monitoring, slurries can fully fill crack between wall, with reach in real time between monitoring two-layer compound Shaft Linings hydraulic pressure to determine the effect of best time for injecting.
The technical solution adopted in the utility model is:
A kind of hydraulic pressure of monitoring between two-layer compound Shaft Linings is to determine the device of best time for injecting, the described two-layer compound borehole wall is by outer shaft wall, inner layer well wall and plastic sandwich are formed, comprise Grouting Pipe, pressure monitoring pipe, floral tube, hydraulic pressure sensor, control valve, wire and pressure testing and controlling instrument, described Grouting Pipe is horizontally set in described inner layer well wall, described pressure monitoring pipe is arranged with in described Grouting Pipe, described pressure monitoring pipe diameter is slightly less than the diameter of Grouting Pipe, one end of described pressure monitoring pipe is arranged between the outside of inner layer well wall and plastic sandwich, the floral tube that diameter is less than described pressure monitoring pipe diameter is inserted in the other end of described pressure monitoring pipe, the other end of described pressure monitoring pipe is connected with described hydraulic pressure sensor, described pressure monitoring pipe and described hydraulic pressure sensor junction are provided with control valve, described hydraulic pressure sensor is connected with ground described pressure testing and controlling instrument by described wire, described wire is laid inside described inner layer well wall.
Between monitoring two-layer compound Shaft Linings described in the utility model, hydraulic pressure is to determine the device of best time for injecting, and wherein, the length of described floral tube is 150 ~ 200mm.
The utility model beneficial effect:
Between monitoring two-layer compound Shaft Linings described in the utility model, hydraulic pressure is to determine the device of the most applicable time for injecting, not only can avoid because frost wall not yet thaws, too early slip casting note does not enter a difficult problem for slurries, and slow slip casting can be avoided, after missing best time for injecting, frost wall thaws the difficult problem that the water yield between wall increases; Be connected with hydraulic pressure sensor with wire in addition, again data are transferred in ground pressure monitoring instrument, not only avoid and to observe water pressure is brought between wall the amount of labour because frequently going into the well and increase and the difficult problem of potential safety hazard, but also the hydraulic pressure force value can in time observed between each time period Shaft Linings, thus observe that between wall, hydraulic pressure is within the scope of certain value easily, grasp best time for injecting exactly.
Between monitoring two-layer compound Shaft Linings described in the utility model, hydraulic pressure is to determine the device of best time for injecting, the effect of floral tube mainly prevents the shutoff such as the drift sand around the mouth of pipe mouth of pipe, monitored data is caused to be forbidden, follow-up cannot the problem such as slip casting, consider from cost-saving angle, the length of floral tube is preferably 150 ~ 200mm.
Accompanying drawing explanation
Fig. 1 be between the utility model monitoring two-layer compound Shaft Linings hydraulic pressure to determine the partial structurtes schematic diagram of the device of best time for injecting;
Fig. 2 be between the utility model monitoring two-layer compound Shaft Linings hydraulic pressure to determine the structural representation of the device of best time for injecting.
Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail.
Detailed description of the invention
Embodiment 1
As depicted in figs. 1 and 2, between the present embodiment monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting, the described two-layer compound borehole wall is by inner layer well wall 1, outer shaft wall 2 and plastic sandwich 3 are formed, comprise Grouting Pipe 4, pressure monitoring pipe 5, floral tube 6, hydraulic pressure sensor 7, control valve 8, wire 9 and pressure testing and controlling instrument 10, Grouting Pipe 4 is horizontally set in inner layer well wall 1, pressure monitoring pipe 5 is arranged with in Grouting Pipe 4, pressure monitoring pipe 5 diameter is slightly less than the diameter of Grouting Pipe 4, one end of pressure monitoring pipe 5 is arranged between the outside of inner layer well wall 1 and plastic sandwich 3, the floral tube 6 that diameter is slightly less than the diameter of pressure monitoring pipe 5 is inserted in the other end of pressure monitoring pipe 5, to reach the mouth of pipe preventing the shutoff pressure monitoring pipes 5 such as drift sand, the length of floral tube 6 is 200mm, the other end of pressure monitoring pipe is connected with described hydraulic pressure sensor, pressure monitoring pipe 5 and hydraulic pressure sensor 7 junction are provided with control valve 8, to play the effect of protection hydraulic pressure sensor 7, hydraulic pressure sensor 7 is connected with ground pressure testing and controlling instrument 10 by wire 9, wire 9 is laid inside inner layer well wall 1.
Between the present embodiment monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the work progress of the device of best time for injecting, comprises the following steps:
(1) after first outer shaft wall 2 segmentation has been built, the position, aquifer 11 of the water barrier less than 12 in advance in bottom during cover inner layer well wall 1 is (generally in the position, each aquifer 11 of below absolute altitude-200m, be only limitted to topsoil position, rock section is single layer well wall structure therefore is not considered) start built-in slip casting pipe 4;
(2) after built-in slip casting pipe 4, at the pre-buried pressure monitoring pipe 5 of same position;
(3), after pressure monitoring pipe 5 buries in step (2), the floral tube 6 that diameter is less than the diameter of Grouting Pipe 4 and pressure monitoring pipe 5 in the one end inside the close inner layer well wall 1 of pressure monitoring pipe 5, is inserted in;
(4) after then inner layer well wall 1 adopts sliding formwork or reverse mould method continuous placing to complete, one end place in time inside the close inner layer well wall 1 of pressure monitoring pipe 5, the hydraulic pressure sensor 7 with a certain amount of journey is installed, concrete range is fixed according to local hydrologic condition, should be bigger than normal, the hydraulic pressure of such as 1.5MP, should select the hydraulic pressure sensor 7 of 2MP range;
(5) while installation hydraulic pressure sensor 7, control valve 8 is installed;
(6) hydraulic pressure sensor 7 is connected with the pressure testing and controlling instrument 10 in control room by wire 9, between such DH double-deck Shaft Linings, the size of hydraulic pressure can by the screen display of pressure testing and controlling instrument 10, accurately grasp the two-layer compound borehole wall by pressure testing and controlling instrument 10 to thaw the size of hydraulic pressure between rear wall, again according to this real-time monitoring data, when hydraulic pressure is in certain limit value (when hydraulic pressure value is generally at about 0.005H, for best time for injecting, H is that pressure monitoring pipe 5 is apart from ground level, such as pressure monitoring pipe 5 is apart from ground 300m, then get final product slip casting when the data on pressure testing and controlling instrument 10 are shown as 1.5MP) can judge now the most applicablely to carry out wall clearance grouting, grouting pressure is generally 1.2 ~ 1.5 times of hydrostatic pressure.
Embodiment 2
Be with the difference of embodiment 1: the length of floral tube is 150mm, the other the same as in Example 1.
The present embodiment 1 and embodiment 2 are when carrying out slip casting to the two-layer compound borehole wall, adopt the up grouting mode of segmentation, segmentation section is high is generally an aquifer, in every segmentation section is high, in its circumferential plane, 4-6 injected hole 13 is dug out every certain altitude along inner layer well wall 1, in one of them injected hole 13 in every segmentation section is high, the present embodiment device is installed, if this section of section is high more than 100m, then at the another one injected hole 13 at height distance 100m place, the present embodiment device is installed again.Accurately grasp composite shaft lining by pressure testing and controlling instrument 10 to thaw the size of hydraulic pressure between rear wall, when reaching best time for injecting, start high to every segmentation section in injected hole carry out slip casting.During use, pressure sensor 7 and control valve 8 are unloaded, from Grouting Pipe 4, carry out slip casting, the injected hole 13 of high inner height difference about the 50m of every segmentation section and circumferential plane thereof also carries out slip casting in succession simultaneously, and slip casting terminates rear continuation and pressure sensor 7 and control valve 8 are loaded onto original position.By hydraulic pressure between the present embodiment monitoring two-layer compound Shaft Linings to determine the device of the most applicable time for injecting, not only can avoid observing the amount of labour that between wall, water pressure is brought because frequently going into the well to increase and potential safety hazard, but also the hydraulic pressure force value can in time observed between each time period Shaft Linings, thus grasp best time for injecting easily.
Above-described embodiment is only be described preferred embodiment of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (2)
1. to monitor between two-layer compound Shaft Linings hydraulic pressure to determine the device of best time for injecting for one kind, the described two-layer compound borehole wall is by inner layer well wall (1), outer shaft wall (2) and plastic sandwich (3) are formed, it is characterized in that: comprise Grouting Pipe (4), pressure monitoring pipe (5), floral tube (6), hydraulic pressure sensor (7), control valve (8), wire (9) and pressure testing and controlling instrument (10), described Grouting Pipe (4) is horizontally set in described inner layer well wall (1), described pressure monitoring pipe (5) is arranged with in described Grouting Pipe (4), described pressure monitoring pipe (5) diameter is slightly less than the diameter of Grouting Pipe (4), one end of described pressure monitoring pipe (5) is arranged between the outside of described inner layer well wall (1) and described plastic sandwich (3), the floral tube (6) that diameter is slightly less than the diameter of described pressure monitoring pipe (5) is inserted in the other end of described pressure monitoring pipe (5), the other end of described pressure monitoring pipe (5) is connected with described hydraulic pressure sensor (7), described pressure monitoring pipe (5) and described hydraulic pressure sensor (7) junction are provided with control valve (8), described hydraulic pressure sensor (7) is connected with ground described pressure testing and controlling instrument (10) by described wire (9), described wire (9) is laid along described inner layer well wall (1) inner side.
2. between monitoring two-layer compound Shaft Linings according to claim 1, hydraulic pressure, to determine the device of best time for injecting, is characterized in that: the length of described floral tube (6) is 150 ~ 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520020041.7U CN204492745U (en) | 2015-01-12 | 2015-01-12 | Between monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520020041.7U CN204492745U (en) | 2015-01-12 | 2015-01-12 | Between monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting |
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| CN204492745U true CN204492745U (en) | 2015-07-22 |
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| CN201520020041.7U Expired - Fee Related CN204492745U (en) | 2015-01-12 | 2015-01-12 | Between monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640090A (en) * | 2017-02-28 | 2017-05-10 | 安徽理工大学 | Surface pre-grouting monitoring system of newly-built coal mine deep vertical shaft under adjacent existing mineshaft condition |
| CN108489435A (en) * | 2018-03-22 | 2018-09-04 | 安徽理工大学 | The method of the steel string type sensor system and deformations early warning that be monitored to the borehole wall |
| CN109667586A (en) * | 2019-01-07 | 2019-04-23 | 中国矿业大学 | A kind of double-layer wall of well grouting system and grouting method |
-
2015
- 2015-01-12 CN CN201520020041.7U patent/CN204492745U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640090A (en) * | 2017-02-28 | 2017-05-10 | 安徽理工大学 | Surface pre-grouting monitoring system of newly-built coal mine deep vertical shaft under adjacent existing mineshaft condition |
| CN106640090B (en) * | 2017-02-28 | 2018-01-02 | 安徽理工大学 | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions |
| WO2018157654A1 (en) * | 2017-02-28 | 2018-09-07 | 安徽理工大学 | System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft |
| NO345682B1 (en) * | 2017-02-28 | 2021-06-14 | Univ Anhui Sci & Technology | System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft |
| CN108489435A (en) * | 2018-03-22 | 2018-09-04 | 安徽理工大学 | The method of the steel string type sensor system and deformations early warning that be monitored to the borehole wall |
| CN108489435B (en) * | 2018-03-22 | 2020-04-21 | 安徽理工大学 | Steel string type sensor system for monitoring well wall and deformation early warning method |
| CN109667586A (en) * | 2019-01-07 | 2019-04-23 | 中国矿业大学 | A kind of double-layer wall of well grouting system and grouting method |
| CN109667586B (en) * | 2019-01-07 | 2020-07-28 | 中国矿业大学 | Grouting method of double-layer well wall grouting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150722 Termination date: 20170112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |