CN104213562A - Plugging device of grouting hole and using method thereof - Google Patents
Plugging device of grouting hole and using method thereof Download PDFInfo
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- CN104213562A CN104213562A CN201410395178.0A CN201410395178A CN104213562A CN 104213562 A CN104213562 A CN 104213562A CN 201410395178 A CN201410395178 A CN 201410395178A CN 104213562 A CN104213562 A CN 104213562A
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- grouting
- slip casting
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Abstract
The invention discloses a plugging device of a grouting hole. The problem that a gap between a grouting pipeline and a grouting hole wall is not tightly sealed can be solved, waste of grouting materials caused by leakage of grouting liquid from the gap between the grouting pipeline and the grouting hole wall to the ground surface is prevented, sharp reduction of grouting pressure and under-filling of a to-be-reinforced stratum are avoided, and the engineering quality and the construction progress are guaranteed. According to the plugging device of the grouting hole, the grouting pipeline is inserted into the grouting hole wall, and the gap is formed between the grouting pipeline and the grouting hole wall. The device comprises an expansion preventer mold bag, a first fastening element and a second fastening element, wherein the expansion preventer mold bag sleeves the grouting pipeline, and the front and rear ends of the expansion preventer mold bag are fixedly arranged on the grouting pipeline through the first fastening element and the second fastening element respectively; fillers are injected into the expansion preventer mold bag; after being full of the fillers, the expansion preventer mold bag is glued with the grouting hole wall and is engaged with a rock body to form a stone body. The invention further provides a using method of the device.
Description
Technical field
The invention belongs to field of engineering technology, relate to a kind of blocking device of slip casting aperture particularly, and the using method of this device, be mainly used in the slurry injection technique of Hydraulic and Hydro-Power Engineering, basement process or tunnel impervious leakage-stopping.
Background technology
At present, in dykes and dams, underground grottoes seepage proof curtain slip casting, ground stabilization, impervious leakage-stopping slip casting process, common rubber stopper, improvement type rubber ring aperture close method, poorly sealed during annular space between closed grouting pipe and slip casting hole wall.The operating principle of these devices relies on elastomeric material to fill in slip casting aperture, and elastomeric material produces elastic deformation, and then the pressure acted on slip casting hole wall is to produce frictional force, with this frictional force opposing grouting pressure.Study discovery by experiment, when grouting pressure is very high, the frictional force of rubber blocking device cannot resist grouting pressure, thus cause rubber blocking device to lose efficacy, and then cause injection slurry to leak out to earth's surface from the space between grouting pipe and slip casting hole wall, injecting paste material is wasted, and grouting pressure suddenly falls, treats strengthening stratum lack of fill, affects workmanship and construction speed.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of blocking device of slip casting aperture is provided, it can solve the not tight problem of gap seals between grouting pipe and slip casting hole wall, prevent injection slurry from leaking out to earth's surface from the space between grouting pipe and slip casting hole wall and cause injecting paste material waste, avoid grouting pressure suddenly to fall, treat strengthening stratum lack of fill, ensure workmanship and construction speed.
Technical solution of the present invention is: the blocking device in this slip casting aperture, grouting pipe to insert in slip casting hole wall and has space therebetween, this device comprises swollen resistance device mould bag, the first tightening member, the second tightening member, swollen resistance device mould bag is enclosed within grouting pipe, and the front and back ends of swollen resistance device mould bag is fixed on grouting pipe respectively by first, second tightening member, filler injects swollen resistance device mould bag, and filler is cementing with slip casting hole wall and engage with rock mass and form Seed harvest after being full of swollen resistance device mould bag.
Owing to present invention employs the swollen resistance device mould bag be enclosed within grouting pipe, filler is cementing with slip casting hole wall and engage with rock mass and form Seed harvest after being full of swollen resistance device mould bag, so the present invention is by the effect of the shear strength opposing grouting pressure of this Seed harvest, and in general the shear strength of Seed harvest is higher, just make the blocking device in this slip casting aperture can resist very high grouting pressure, and then the not tight problem of gap seals between grouting pipe and slip casting hole wall can be solved, prevent injection slurry from leaking out to earth's surface from the space between grouting pipe and slip casting hole wall and cause injecting paste material waste, grouting pressure is avoided suddenly to fall, treat strengthening stratum lack of fill, ensure workmanship and construction speed.
Additionally provide the using method of the blocking device in this slip casting aperture, comprise the following steps:
(1) measure external water pressure, obtain expection grouting pressure, and determine the length of swollen resistance device mould bag;
(2) according to on-the-spot physical condition, select the blocking device in the slip casting aperture of claim 2 or 3, after assembling, put into slip casting hole wall;
(3) open filler injection pump, obtain injection pressure curve and flow by flow rate of grouting manograph; When injection pressure continues to increase, swollen resistance device mould bag starts drainage, needs controlled pressure amplification unsuitable excessive; When injection pressure continues to increase rear pressure curve close to horizontal linear, swollen resistance device mould bag drainage is complete, starts to extrude hole wall, increases pressure again after need keeping injection pressure certain hour, until reach expection grouting pressure; After injection pressure reaches expection grouting pressure, this pressure 3-5 minute need be maintained; Finally, close filler injection pump, complete the filling of swollen resistance device mould bag;
(4) slip casting is carried out by grouting pipe.
Accompanying drawing explanation
Fig. 1 shows the stressed schematic diagram of the blocking device according to slip casting aperture of the present invention;
Fig. 2 shows the structural representation of the first embodiment of the blocking device according to slip casting aperture of the present invention;
Fig. 3 shows the schematic diagram that filler injects the blocking device in the slip casting aperture of Fig. 2;
Fig. 4 shows filler and is full of the blocking device in the slip casting aperture of Fig. 2 and the schematic diagram of extrusion pour slurry hole wall;
The blocking device that Fig. 5 shows the slip casting aperture of Fig. 2 completes the schematic diagram blocking grouting behind shaft or drift lining;
Fig. 6 shows the structural representation of the second embodiment of the blocking device according to slip casting aperture of the present invention;
Fig. 7 shows the schematic diagram that filler injects the blocking device in the slip casting aperture of Fig. 6;
Fig. 8 shows filler and is full of the blocking device in the slip casting aperture of Fig. 6 and the schematic diagram of extrusion pour slurry hole wall;
The blocking device that Fig. 9 shows the slip casting aperture of Fig. 6 completes the schematic diagram blocking grouting behind shaft or drift lining.
Detailed description of the invention
As shown in figs. 2-9, the blocking device in this slip casting aperture, grouting pipe 2 to insert in slip casting hole wall 1 and has space therebetween, this device comprises swollen resistance device mould bag 3, first tightening member, the second tightening member, swollen resistance device mould bag 3 is enclosed within grouting pipe 2, and the front and back ends of swollen resistance device mould bag 3 is fixed on grouting pipe 2 respectively by first, second tightening member, filler injects swollen resistance device mould bag, and filler is cementing with slip casting hole wall and engage with rock mass and form Seed harvest after being full of swollen resistance device mould bag.
Owing to present invention employs the swollen resistance device mould bag be enclosed within grouting pipe, filler is cementing with slip casting hole wall and engage with rock mass and form Seed harvest after being full of swollen resistance device mould bag, so the present invention is by the effect of the shear strength opposing grouting pressure of this Seed harvest, and in general the shear strength of Seed harvest is higher, just make the blocking device in this slip casting aperture can resist very high grouting pressure, and then the not tight problem of gap seals between grouting pipe and slip casting hole wall can be solved, prevent injection slurry from leaking out to earth's surface from the space between grouting pipe and slip casting hole wall and cause injecting paste material waste, grouting pressure is avoided suddenly to fall, treat strengthening stratum lack of fill, ensure workmanship and construction speed.
In addition, as shown in Figure 2-5, the tube wall of the grouting pipe between first, second tightening member has some grouting pipes surface slurry outlet 4, first tightening member is conventional fasteners 5, second tightening member is hole pressure pipe sealing device 6 decided at the higher level but not officially announced, and filler injects swollen resistance device mould bag 3 by grouting pipe surface slurry outlet after grouting pipe.
Fig. 3 shows the schematic diagram that filler injects the blocking device in the slip casting aperture of Fig. 2; Fig. 4 shows filler and is full of the blocking device in the slip casting aperture of Fig. 2 and the schematic diagram of extrusion pour slurry hole wall; The blocking device that Fig. 5 shows the slip casting aperture of Fig. 2 completes the schematic diagram blocking grouting behind shaft or drift lining.Arrow in figure represents the flow direction of filler.After filler enters grouting pipe, be subject to the obstruct of hole pressure pipe sealing device 6 decided at the higher level but not officially announced, will from grouting pipe surface slurry outlet 4 flow out enter swollen resistance device mould bag 3, along with injection rate increase, swollen resistance device mould bag 3 by lasting filling, as shown in Figure 3.Along with swollen resistance device mould bag 3 continues to fill, swollen resistance device mould bag filtration the cement granules (when filler is the slurries of cement slurries) retained in cement grout.When being filled complete by cement granules in swollen resistance device mould bag, swollen resistance device mould bag extrusion pour slurry hole wall, slip casting hole wall pressurized produces distortion, and swollen resistance device mould bag becomes high strength Seed harvest with the slip casting hole wall engaging after distortion subsequently, as shown in Figure 4.When injection pressure continues to increase, after exceeding the pressure-bearing threshold of hole pressure pipe sealing device 6 decided at the higher level but not officially announced, hole pressure pipe sealing device 6 decided at the higher level but not officially announced lost efficacy, and injection slurry enters deeper formation by grouting pipe, as shown in Figure 5.
In addition, as Figure 6-9, this device also comprises filling tube 7, and filling tube 7 inserts swollen resistance device mould bag through the first tightening member, and first, second tightening member is all conventional fasteners 5, and filler injects swollen resistance device mould bag 3 through filling tube.
Fig. 7 shows the schematic diagram that filler injects the blocking device in the slip casting aperture of Fig. 6; Fig. 8 shows filler and is full of the blocking device in the slip casting aperture of Fig. 6 and the schematic diagram of extrusion pour slurry hole wall; The blocking device that Fig. 9 shows the slip casting aperture of Fig. 6 completes the schematic diagram blocking grouting behind shaft or drift lining.Arrow in figure represents the flow direction of filler.After filler enters filling tube 7, directly enter swollen resistance device mould bag 3, along with injection rate increase, swollen resistance device mould bag 3 by lasting filling, as shown in Figure 7.Along with swollen resistance device mould bag 3 continues to fill, swollen resistance device mould bag filtration the cement granules (when filler is the slurries of cement slurries) retained in cement grout.When being filled complete by cement granules in swollen resistance device mould bag, swollen resistance device mould bag 3 extrudes hole wall, and hole wall pressurized produces distortion, and swollen resistance device mould bag 3 becomes high strength Seed harvest with the slip casting hole wall engaging after distortion subsequently, as shown in Figure 8.After swollen resistance device mould bag 3 injection pressure reaches expection grouting pressure, namely by grouting pipe, slip casting is carried out to deeper formation, as shown in Figure 9.
In addition, the first tightening member distance slip casting aperture 30-50cm backward.Such distance is relatively good for blockage effect, and it is more convenient to construct.
In addition, swollen resistance device mould bag 3 is geotextiles.The transmitance of this material filler is higher, and with low cost.
In addition, described filler is the slurries containing 90%-100% cement grout.Filler blockage effect and the construction cost of this cement grout ratio of experiment proof employing are all relatively good.
Additionally provide the using method of the blocking device in this slip casting aperture, comprise the following steps:
(1) measure external water pressure, obtain expection grouting pressure, and determine the length of swollen resistance device mould bag;
(2) according to on-the-spot physical condition, select the blocking device in the slip casting aperture of claim 2 (directly injecting filler by grouting pipe) or 3 (injecting filler by filling tube), after assembling, put into slip casting hole wall;
(3) open filler injection pump, obtain injection pressure curve and flow by flow rate of grouting manograph; When injection pressure continues to increase, swollen resistance device mould bag starts drainage, needs controlled pressure amplification unsuitable excessive; When injection pressure continues to increase rear pressure curve close to horizontal linear, swollen resistance device mould bag drainage is complete, starts to extrude hole wall, increases pressure again after need keeping injection pressure certain hour, until reach expection grouting pressure; After injection pressure reaches expection grouting pressure, this pressure 3-5 minute need be maintained; Finally, close filler injection pump, complete the filling of swollen resistance device mould bag;
(4) slip casting (can carry out stratum slip casting without the need to waiting to coagulate) is carried out by grouting pipe.
The length of action of swollen resistance device mould bag and slip casting hole wall is wherein obtained in step (1) by formula (1):
As shown in Figure 1, Seed harvest shear strength is σ
τ, P1 is grouting pressure, and D is slip casting hole wall diameter, and d is grouting pipe diameter, and L is the length of action of swollen resistance device mould bag and slip casting hole wall.
After obtaining the length of action of swollen resistance device mould bag and slip casting hole wall, add the length that an appropriate value (such as L) just obtains swollen resistance device mould bag.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong to the protection domain of technical solution of the present invention.
Claims (7)
1. the blocking device in a slip casting aperture, grouting pipe (2) to insert in slip casting hole wall (1) and has space therebetween, it is characterized in that: this device comprises swollen resistance device mould bag (3), first tightening member, second tightening member, swollen resistance device mould bag (3) is enclosed within grouting pipe (2), and before swollen resistance device mould bag (3), rear end is respectively by first, second tightening member is fixed on grouting pipe (2), filler injects swollen resistance device mould bag, filler is cementing with slip casting hole wall and engage with rock mass and form Seed harvest after being full of swollen resistance device mould bag.
2. the blocking device in slip casting aperture according to claim 1, it is characterized in that: the tube wall of the grouting pipe between first, second tightening member has some grouting pipes surface slurry outlet (4), first tightening member is conventional fasteners (5), second tightening member is hole pressure pipe sealing device (6) decided at the higher level but not officially announced, and filler injects swollen resistance device mould bag (3) by grouting pipe surface slurry outlet after grouting pipe.
3. the blocking device in slip casting aperture according to claim 1, it is characterized in that: this device also comprises filling tube (7), filling tube (7) inserts swollen resistance device mould bag through the first tightening member, first, second tightening member is all conventional fasteners (5), and filler injects swollen resistance device mould bag (3) through filling tube.
4. the blocking device in the slip casting aperture according to any one of claim 1-3, is characterized in that: the first tightening member is distance slip casting aperture 30-50cm backward.
5. the blocking device in the slip casting aperture according to any one of claim 1-3, is characterized in that: swollen resistance device mould bag (3) is geotextiles.
6. the blocking device in the slip casting aperture according to any one of claim 1-3, is characterized in that: described filler is the slurries containing 90%-100% cement grout.
7. a using method for the blocking device in the slip casting aperture according to Claims 2 or 3, is characterized in that: comprise the following steps:
(1) measure external water pressure, obtain expection grouting pressure, and determine the length of swollen resistance device mould bag;
(2) according to on-the-spot physical condition, select the blocking device in the slip casting aperture of claim 2 or 3, after assembling, put into slip casting hole wall;
(3) open filler injection pump, obtain injection pressure curve and flow by flow rate of grouting manograph; When injection pressure continues to increase, swollen resistance device mould bag starts drainage, needs controlled pressure amplification unsuitable excessive; When injection pressure continues to increase rear pressure curve close to horizontal linear, swollen resistance device mould bag drainage is complete, starts to extrude hole wall, increases pressure again after need keeping injection pressure certain hour, until reach expection grouting pressure; After injection pressure reaches expection grouting pressure, this pressure 3-5 minute need be maintained; Finally, close filler injection pump, complete the filling of swollen resistance device mould bag;
(4) slip casting is carried out by grouting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395178.0A CN104213562B (en) | 2014-08-12 | 2014-08-12 | The blocking device in a kind of slip casting aperture and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410395178.0A CN104213562B (en) | 2014-08-12 | 2014-08-12 | The blocking device in a kind of slip casting aperture and using method thereof |
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| Publication Number | Publication Date |
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| CN104213562A true CN104213562A (en) | 2014-12-17 |
| CN104213562B CN104213562B (en) | 2016-08-24 |
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| CN201410395178.0A Active CN104213562B (en) | 2014-08-12 | 2014-08-12 | The blocking device in a kind of slip casting aperture and using method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812117A (en) * | 2017-03-16 | 2017-06-09 | 中国水电建设集团十五工程局有限公司 | Dam reverse drainage plugging device and method |
| CN109442130A (en) * | 2018-12-24 | 2019-03-08 | 北京市市政工程研究院 | Drainage pipeline pocket shape water blocking device and construction mounting structure and water blockoff tear blocking method open |
| CN110566209A (en) * | 2019-08-08 | 2019-12-13 | 中铁第四勘察设计院集团有限公司 | Non-return device of grouting pipe, grouting pipe and non-return method |
| CN111188350A (en) * | 2020-01-21 | 2020-05-22 | 上海勘察设计研究院(集团)有限公司 | Confined water dewatering well structure and dewatering method |
| CN112647380A (en) * | 2020-12-23 | 2021-04-13 | 江苏精享裕建工有限公司 | Roadbed concrete repairing grouting reinforcement method and reinforcement sealing device thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812117A (en) * | 2017-03-16 | 2017-06-09 | 中国水电建设集团十五工程局有限公司 | Dam reverse drainage plugging device and method |
| CN109442130A (en) * | 2018-12-24 | 2019-03-08 | 北京市市政工程研究院 | Drainage pipeline pocket shape water blocking device and construction mounting structure and water blockoff tear blocking method open |
| CN110566209A (en) * | 2019-08-08 | 2019-12-13 | 中铁第四勘察设计院集团有限公司 | Non-return device of grouting pipe, grouting pipe and non-return method |
| CN111188350A (en) * | 2020-01-21 | 2020-05-22 | 上海勘察设计研究院(集团)有限公司 | Confined water dewatering well structure and dewatering method |
| CN112647380A (en) * | 2020-12-23 | 2021-04-13 | 江苏精享裕建工有限公司 | Roadbed concrete repairing grouting reinforcement method and reinforcement sealing device thereof |
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| Publication number | Publication date |
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| CN104213562B (en) | 2016-08-24 |
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