CN214272049U - Pre-grouting plugging device suitable for large karst cave under high-flow-speed water-moving condition - Google Patents
Pre-grouting plugging device suitable for large karst cave under high-flow-speed water-moving condition Download PDFInfo
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- CN214272049U CN214272049U CN202023331030.0U CN202023331030U CN214272049U CN 214272049 U CN214272049 U CN 214272049U CN 202023331030 U CN202023331030 U CN 202023331030U CN 214272049 U CN214272049 U CN 214272049U
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Abstract
The utility model relates to a slip casting plugging device in advance suitable for under big solution cavity high velocity of flow water condition, including advancing the thick liquid pipe, it is equipped with a plurality of grout holes to advance to manage, it will to advance the cover on the thick liquid pipe outer wall go out the elastic rubber circle that the thick liquid hole covered, it is equipped with geotechnological sack on the thick liquid pipe to advance, geotechnological sack both ends are respectively through clamp sealing connection, it is in to go out the thick liquid hole setting geotechnological sack, it is equipped with the joint to advance thick liquid pipe upper end, and the lower extreme is equipped with the block cap. Has the advantages of reasonable structural design, low cost, convenient installation, good plugging effect and the like.
Description
The technical field is as follows:
the utility model relates to a big solution cavity high flow velocity moves water shutoff technical field, concretely relates to be applicable to the pre-grouting plugging device under the big solution cavity high flow velocity moves water condition.
Background art:
the traditional grouting plugging technology mainly uses cement grout, cement-water glass grout and/or polyurethane chemical materials as main materials to perform grouting plugging, and is mainly suitable for the condition of low flow rate (close to a hydrostatic state) because the cement grout is easily dispersed by water, the setting time is long, the cement-water glass grout has poor diffusion capacity and difficult control of the setting time, the polyurethane grout reacts violently when meeting water, the expansion curing rate is too high, a solidified body is easy to age and the like.
However, due to the fact that natural ghost workers have geological conditions of karst and development thereof, development of the karst causes communication of water systems such as underground water, surface water and the like, high-flow-rate underground flowing water is formed in caves and pipelines in development of the karst, even underground rivers are formed, and when plugging is conducted according to the condition of the large-karst cave high-flow-rate underground flowing water, the prior art is lack of effective means. When the traditional grouting plugging technology is adopted to solve the problem of plugging a karst cave and a water passing channel under the condition of flowing water, the slurry is dispersed without initial setting, the plugging technology is difficult, and the success rate is extremely low.
In order to improve the plugging effect under the condition of high-flow-rate flowing water, corresponding equipment can be adopted to pre-plug the high-flow-rate flowing water, the water passing area is reduced, the flowing water flow rate is reduced, and then the traditional grouting plugging technology is adopted to perform grouting plugging. Therefore, the grouting plugging efficiency and effect can be effectively improved. However, the prior art does not have a pre-grouting plugging device specially used under the condition of large karst cave high-flow-rate running water.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
The utility model has the following contents:
an object of the utility model is to solve the problem that prior art exists, provide and be applicable to the pre-grouting plugging device under the big solution cavity high flow velocity flowing water condition, have advantages such as structural design is reasonable, with low costs, simple to operate, shutoff are effectual.
The utility model discloses an adopt following technical scheme to realize above-mentioned purpose:
the pre-grouting plugging device suitable for the condition of high-flow-speed moving water of the large karst cave comprises a slurry inlet pipe, wherein a plurality of slurry outlet holes are formed in the slurry inlet pipe, an elastic rubber ring for covering the slurry outlet holes is sleeved on the outer wall of the slurry inlet pipe, a geotextile bag is arranged on the slurry inlet pipe, two ends of the geotextile bag are respectively connected in a sealing mode through clamps, the slurry outlet holes are formed in the geotextile bag, a connector is arranged at the upper end of the slurry inlet pipe, and a sealing cap is arranged at the lower end of the slurry inlet pipe.
The outer wall of the slurry inlet pipe is provided with a plurality of groups of slurry outlet holes at intervals from top to bottom, and each group of slurry outlet holes comprises a plurality of slurry outlet holes which are arranged in a triangular or rectangular shape.
The distance between two adjacent groups of slurry outlet holes is 20-40 cm.
The diameter of the grout outlet is 6-10 cm.
The joint is a reverse-thread joint, and the joint and the pulp inlet pipe are made of PVC materials.
The geotextile bag is made of a water-permeable geosynthetic material.
The sealing cap is designed to be conical, and the sealing cap is in threaded connection with the slurry inlet pipe.
The utility model adopts the above structure, following beneficial effect can be brought:
(1) the geotextile bag is used as a slurry container, so that the slurry can be effectively prevented from being dispersed by high-flow-rate kinetic water, the self-expansion filling can be carried out according to the shape of the karst cave, the geotextile bag is suitable for the karst caves with different shapes, and in addition, the cement slurry has higher hardening speed after being drained by the geotextile bag, so that the solidification speed of the cement slurry is obviously improved; (2) the whole pre-grouting plugging device is simple and practical in structure, remarkable in plugging effect, easy to process, low in cost and simple in installation and operation.
Description of the drawings:
fig. 1 is a schematic structural view of the pre-grouting plugging device of the present invention;
fig. 2 is a schematic structural view of the pre-grouting plugging device after installation;
fig. 3 is a schematic structural view of the pre-grouting plugging device after grouting;
FIG. 4 is a sectional view A-A of FIG. 3;
fig. 5 is a schematic view of the structure of the pre-grouting plugging device and the subsequent grouting plugging of the utility model;
FIG. 6 is a sectional view taken along line B-B of FIG. 5;
in the figure, 1, a grout inlet pipe, 2, a grout outlet hole, 3, an elastic rubber ring, 4, a geotextile bag, 5, a hoop, 6, a joint, 7, a sealing cap, 8, a rock stratum, 9, a karst cave, 10, high-flow-velocity flowing water, 11, a grouting hole, 12, a mounting hole, 13, a grouting pipe, 14, grout, 15, a feeding hole, 16, soft and hard aggregate, 17 and cement-water glass double-grout.
The specific implementation mode is as follows:
in order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
Furthermore, the terms "upper end", "lower end", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the location of the indicated technical feature.
In the present invention, unless otherwise expressly stated or limited, the terms "provided", "disposed", "connected", and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, the pre-grouting plugging device suitable for the condition of high flow velocity and flowing water of a large karst cave comprises a slurry inlet pipe 1, wherein a plurality of slurry outlet holes 2 are formed in the slurry inlet pipe 1, an elastic rubber ring 3 covering the slurry outlet holes 2 is sleeved on the outer wall of the slurry inlet pipe 1, a geotextile bag 4 is arranged on the slurry inlet pipe 1, two ends of the geotextile bag 4 are respectively connected in a sealing mode through a hoop 5, the slurry outlet holes 2 are arranged in the geotextile bag 4, a connector 6 is arranged at the upper end of the slurry inlet pipe 1, and a sealing cap 7 is arranged at the lower end of the slurry inlet pipe 1. The geotextile bag 4 is used as a slurry container, so that the slurry can be effectively prevented from being dispersed by high-flow-speed flowing water 10, the self-expansion filling can be carried out according to the shape of the karst cave 9, the geotextile bag is suitable for the karst caves 9 with different shapes, and in addition, the cement slurry has higher hardening speed after being separated from water by the geotextile bag 4, and the solidification speed of the cement slurry is obviously improved; the whole pre-grouting plugging device is simple and practical in structure, remarkable in plugging effect, easy to process, low in cost and simple in installation and operation. The elastic rubber sealing ring 3 can be expanded under the grouting pressure during grouting to enable the grout outlet hole 2 to be communicated with the geotextile bag 4 for grouting. When grouting is finished, the elastic reset seals the grout outlet hole 2, and the reverse grout stopping effect is achieved.
Go into on the outer wall of thick liquid pipe 1 top-down interval and be equipped with multiunit play thick liquid hole 2, every group goes out thick liquid hole 2 and includes a plurality of play thick liquid holes 2 that are triangle-shaped or rectangle setting. The slurry outlet efficiency is improved.
The distance between two adjacent groups of slurry outlet holes 2 is 20-40 cm.
The diameter of the grout outlet 2 is 6-10 cm.
The joint 6 is a reverse-thread joint, and the joint 6 and the pulp inlet pipe 1 are made of PVC materials.
The geotextile bag 4 is made of a water-permeable geosynthetic material. Has the advantages of high tensile strength, good water permeability and the like.
The sealing cap 7 is designed to be conical, and the sealing cap 7 is in threaded connection with the slurry inlet pipe 1. The conical design facilitates installation.
The utility model discloses slip casting plugging device's use in advance:
as shown in fig. 2-6, comprising the steps of:
the method comprises the following steps: drilling holes in the designed grouting holes in the rock stratum 8 by using drilling equipment, drilling to the development position of a karst cave to form grouting holes 11 and mounting holes 12, connecting the grouting holes with the joints 6 by using grouting pipes 13, arranging the joints 6 in the grouting holes 11, and arranging the sealing caps 7 in the mounting holes 12. Grouting into a grouting pipe 13, allowing grout 14 to enter a grout inlet pipe 1 through the grouting pipe 13, expanding an elastic rubber ring 3 under grouting pressure to form a grouting channel, allowing the grout 14 to enter a geotextile bag 4 through a grout outlet hole 2, expanding the geotextile bag 4 according to the shape of a karst cave 9 during grouting to effectively block the karst cave 9, resetting the elastic rubber ring 3 to block the grout outlet hole 2 after grouting is completed, playing a reverse grout stopping role, and taking down the grouting pipe 13 to clean for later use;
drilling at the upstream of the grouting hole 11 by using drilling equipment to a development position of the karst cave 9 to form a feeding hole 15, placing a feeding pipe in the feeding hole 15, then feeding soft and hard aggregates 16 into the karst cave 9 through the feeding pipe, continuously stacking the soft and hard aggregates 16 under the blocking action of the pre-grouting plugging device until the feeding hole 15 is filled, and taking out the feeding pipe; then the grouting pipe 13 is placed into the feeding hole 15, and the well-stirred cement-water glass double-slurry 17 is injected into the feeding hole 13 until the feeding hole is full.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (7)
1. The pre-grouting plugging device is suitable for the condition of high-flow-speed moving water of a large karst cave and is characterized by comprising a slurry inlet pipe, wherein a plurality of slurry outlet holes are formed in the slurry inlet pipe, an elastic rubber ring for covering the slurry outlet holes is sleeved on the outer wall of the slurry inlet pipe, a geotextile bag is arranged on the slurry inlet pipe, two ends of the geotextile bag are respectively connected in a sealing mode through clamps, the slurry outlet holes are formed in the geotextile bag, a connector is arranged at the upper end of the slurry inlet pipe, and a sealing cap is arranged at the lower end of the slurry inlet pipe.
2. The pre-grouting plugging device suitable for the condition of high flow velocity running water of the large karst cave according to claim 1, wherein a plurality of groups of grout outlet holes are arranged on the outer wall of the grout inlet pipe at intervals from top to bottom, and each group of grout outlet holes comprises a plurality of grout outlet holes which are arranged in a triangular or rectangular shape.
3. The pre-grouting plugging device suitable for the condition of high-flow-speed running water of a large karst cave according to claim 2, wherein the distance between two adjacent groups of grout outlet holes is 20-40 cm.
4. The pre-grouting plugging device suitable for the condition of high-flow-speed running water of a large karst cave according to claim 1 or 3, wherein the diameter of the grout outlet is 6-10 cm.
5. The pre-grouting plugging device suitable for the condition of high flow rate running water of a large karst cave according to claim 1, wherein the joint is a reverse-thread joint, and the joint and the slurry inlet pipe are made of PVC materials.
6. The pre-grouting plugging device for the condition of high flow rate and flowing water of a large karst cave according to claim 1, wherein the geotextile bag is made of a water-permeable geosynthetic material.
7. The pre-grouting plugging device for the high-flow-rate running water condition of the large karst cave according to claim 1, wherein the sealing cap is designed to be conical, and the sealing cap is in threaded connection with the slurry inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023331030.0U CN214272049U (en) | 2020-12-30 | 2020-12-30 | Pre-grouting plugging device suitable for large karst cave under high-flow-speed water-moving condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023331030.0U CN214272049U (en) | 2020-12-30 | 2020-12-30 | Pre-grouting plugging device suitable for large karst cave under high-flow-speed water-moving condition |
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| Publication Number | Publication Date |
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| CN214272049U true CN214272049U (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023331030.0U Active CN214272049U (en) | 2020-12-30 | 2020-12-30 | Pre-grouting plugging device suitable for large karst cave under high-flow-speed water-moving condition |
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| CN (1) | CN214272049U (en) |
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2020
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