Waterproof grouting blocking device for underground development and tunneling

Abstract

The utility model relates to the technical field of underground development tunneling grouting plugging, and discloses an underground development tunneling waterproof grouting plugging device which comprises a grouting mechanism, the grouting mechanism comprises a grouting pipe, and an anti-blocking structure is installed at a grout outlet of the grouting pipe; the anti-blocking structure comprises an anti-blocking cone, and the anti-blocking cone comprises an outer cone part located on the outer side of the grouting pipe and an inner cone part located in the grouting pipe; the anti-blocking cone is installed on the grouting pipe in a sliding mode through a plurality of spring telescopic structures, the grouting pipe is pushed, the anti-blocking cone abutting against the interior of a rock stratum elastically stretches out and draws back, and blocking agent solids solidified at the position of a pipe opening of the grouting pipe are evacuated. The outer side wall of the anti-blocking cone and the inner side wall of the grouting pipe are arranged at an interval; and the length of the inner conical part is greater than that of the outer conical part. By means of the structure, the grouting efficiency in the grouting plugging process is greatly improved, and the technical problems of grouting plugging and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of underground development and tunneling grouting plugging, and particularly relates to a waterproof grouting plugging device for underground development and tunneling. BACKGROUND

[0002] During the underground development and tunneling mining process of a coal mine, underground water flows into the mine through rock fissures or pores, so if the permeation area is not plugged during the mining process, the underground water may penetrate and cause water inrush, threatening the safety of miners, and even in serious cases, weakening the strength of the rock, affecting the stability of the mine and increasing the risk of collapse.

[0003] Therefore, in actual construction, geological exploration and geophysical prospecting techniques are often used to identify high-permeability risk areas in advance, such as plugging fissures by grouting to reduce the permeation channels.

[0004] The specific method is to use a drill rod and other equipment to grout a groove on the permeated rock in advance, then extend a grouting pipe into the groove, and pump a curing agent slurry into the groove, which is injected along the groove and the permeation cavities connected to the groove in the rock. The curing agent solidifies rapidly when it comes into contact with water.

[0005] This method achieves plugging of the permeation area. However, during actual construction, it is found that when the grouting pipe is grouting, the pipe opening encounters permeation water in the rock, causing the curing agent pumped out of the pipe opening to pre-harden and block the grouting pipe. This increases the pressure of the grouting, and in serious cases, grouting cannot continue.

[0006] The above technical drawbacks are that the grouting pipe used for grouting cannot easily remove blockages at the pipe opening part after the pipe is extended into the rock.

[0007] At the same time, during grouting, the grouting pipe needs to be suspended on the rock wall, and during the process of extending the grouting pipe into the rock, the angle of the grouting pipe needs to be adjusted constantly to facilitate the smooth pushing of the grouting pipe into the groove, which requires the operator to constantly adjust the posture of the grouting pipe. The grouting pipe in a suspended state has a certain weight, especially a long grouting pipe, which makes it more laborious to operate the grouting pipe to extend into the groove. The specific reason is that the grouting pipe itself has a large resistance when pushing into the groove, and secondly, it is difficult to operate. INVENTION CONTENTS

[0008] Based on the above background, the purpose of the utility model is to provide a waterproof grouting plugging device for underground development and tunneling.

[0009] To achieve the above purpose, the utility model adopts the following technical solutions:

[0010] The application discloses a waterproof grouting plugging device for underground development and tunneling.

[0011] The anti-blocking structure comprises an anti-blocking cone, wherein the anti-blocking cone comprises an outer cone part located outside the grouting pipe and an inner cone part located inside the grouting pipe.

[0012] The anti-blocking cone is slidably installed on the grouting pipe through a plurality of spring telescopic structures, pushes the grouting pipe, and elastically telescopes the anti-blocking cone in the rock stratum to disperse the solid plugging agent solidified at the position of the pipe opening of the grouting pipe.

[0013] The outer side wall of the anti-blocking cone is spaced apart from the inner side wall of the grouting pipe.

[0014] The length of the inner cone part is greater than that of the outer cone part.

[0015] Preferably, the top and bottom of the anti-blocking cone are fixedly connected with spring telescopic structures respectively.

[0016] The spring telescopic structure comprises a vertical installation screw rod fixedly connected with the anti-blocking cone, a horizontally arranged sliding rod installed at the top of the vertical installation screw rod, and the sliding rod is slidably connected in the grouting pipe.

[0017] A spring is sleeved on the sliding rod, an outer end of the sliding rod is fixedly connected with a spring seat, and two ends of the spring are fixedly connected with the spring seat and the edge of the opening part of the grouting pipe respectively.

[0018] Preferably, the grouting pipe is integrally formed with a connecting pipe.

[0019] A plurality of pump grouting pipes are integrally formed on the connecting pipe, and an external pump grouting pipe joint is integrally formed at the feeding end of the pump grouting pipe.

[0020] Preferably, an adjusting and guiding mechanism is slidably assembled and connected at the inner end of the grouting pipe, the posture of the grouting pipe is adjusted through the adjusting and guiding mechanism during the process that the grouting pipe is inserted into the grouting groove previously formed in the rock stratum, and the insertion of the grouting pipe into the grouting groove is facilitated.

[0021] Preferably, the adjusting and guiding mechanism comprises a ball slidably connected with the grouting pipe, and the top and bottom of the ball are respectively provided with movable connecting pieces.

[0022] The adjusting and guiding mechanism further comprises an outer annular seat, and the movable connecting pieces are fixed on the outer annular seat.

[0023] Preferably, the movable connecting pieces comprise movable rods, and the top and bottom of the movable rods are respectively fixedly connected with hinged balls.

[0024] The hinged balls are hingedly connected with a hinged seat, and the hinged seat is fixedly connected with the outer annular seat and the ball respectively.

[0025] Preferably, a plugging plate is sleeved on the grouting pipe, and the plugging plate is plugged on the rock wall during grouting.

[0026] Preferably, a plurality of anchor rods are slidingly installed on the outer annular seat;

[0027] The anchor rods are anchored on the rock stratum.

[0028] Preferably, the anchor rods are slidingly connected with the plugging plate, and a pushing nut for pushing the plugging plate is threadedly connected on the anchor rod.

[0029] The utility model has the following beneficial effects:

[0030] 1. By the length of the inner taper part being greater than the length of the outer taper part, when the grouting port of the grouting pipe encounters water solidification condensation during pumping of the solidifying agent, causing the grouting to be not smooth, the operator pulls the grouting pipe back, the grouting pipe slides in the groove, and the grouting pipe is pushed into the groove again, in the process, the outer taper part touches the bottom of the groove, at this time, the inner taper part of the anti-blocking taper continuously expands and contracts in the grouting pipe, and the sharpness of the taper tip of the inner taper part is high, so that the condensed solidifying agent blockage is continuously destroyed, and the blockage at the port position is dredged.

[0031] In the process, the grouting pipe does not need to be pulled out of the groove, so that the convenience and efficiency of dredging the port blockage are greatly improved. In the operation process, the operator repeatedly pulls and pushes the grouting pipe several times, so that the blockage can be destroyed.

[0032] 2. During the process of pushing the grouting pipe into the groove, in order to conveniently push the grouting pipe, the posture of the grouting pipe is adjusted, such as left and right pushing adjustment (at this time, the ball swings left and right, and the ball swings relative to the hinged ball and the movable rod), and at the same time, the left and right rotation adjustment of the ball and the grouting rod can be realized (at this time, the hinged ball rotates relative to the hinged seat).

[0033] By the above-mentioned manner, the posture is conveniently adjusted, the grouting rod is conveniently avoided from the obstacles in the groove, and the grouting rod is pushed into the inside of the groove.

[0034] 3. The plugging plate is blocked. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in the drawings without creating creative labor.

[0036] Figure 1It is the overall structure schematic view in the embodiment of the utility model;

[0037] Figure 2 It is the structure schematic view of the anti-blocking structure in the embodiment of the utility model;

[0038] Figure 3 It is the structure schematic view of the adjusting and guiding mechanism in the embodiment of the utility model;

[0039] Figure 4 It is the connecting schematic view of the plugging plate and the anchoring rod in the embodiment of the utility model;

[0040] Figure 5 It is the connecting schematic view of the grouting pipe and the connecting pipe and the pump grouting pipe in the embodiment of the utility model;

[0041] Figure 6 It is the structure schematic view in another visual angle in the embodiment of the utility model Figure 1

[0042] The realization, functional features and advantages of the utility model will be further described by combining with the embodiments and referring to the drawings. Specific implementation

[0043] The technical scheme in the embodiment of the utility model will be clearly and completely described by combining with the drawings in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the protection scope of the utility model.

[0044] It should be noted that all the directionality indications (such as up, down, left, right, front, back...) in the embodiment of the utility model are only used for explaining the relative position relationship, movement condition and the like between the components in a certain specific posture (such as shown in the drawings), if the specific posture changes, the directionality indications also change accordingly.

[0045] In addition, the description such as "first", "second" and the like in the utility model is only used for the description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, the technical scheme of each embodiment can be combined with each other, but it must be based on the person skilled in the art can realize, when the combination of the technical scheme appears contradictory or cannot be realized, it should be considered that the combination of the technical scheme does not exist, also not in the protection scope required by the utility model.

[0046] Embodiment 1 ​

[0047] As Figures 1-6 shown in the drawings, a kind of downhole development tunneling waterproof grouting plugging device, including grouting mechanism 1, the grouting mechanism 1 includes grouting pipe 14, and the grouting port of the grouting pipe 14 is equipped with anti-blocking structure 2.

[0048] During operation, grouting pipe 14 is inserted into the groove preformed on rock formation, at this time, grouting pipe 14 pumps curing agent into the groove, and the permeable gap in rock formation is connected to the groove, so that the curing agent penetrates along the permeable gap and is solidified to achieve large-area plugging.

[0049] During grouting, the grouting port of grouting pipe 14 is prevented from being blocked by anti-blocking structure 2.

[0050] Specifically, anti-blocking structure 2 includes anti-blocking cone 21, which includes outer cone portion 212 located outside grouting pipe 14 and inner cone portion 211 located inside grouting pipe 14; anti-blocking cone 21 is slidingly installed on grouting pipe 14 by two spring expansion structures symmetrically arranged above and below, pushes grouting pipe 14, and elastically expands anti-blocking cone 21 in rock formation to disperse the solidified plugging agent at the port position of grouting pipe 14; the outer sidewall of anti-blocking cone 21 is spaced apart from the inner sidewall of grouting pipe 14 (to keep the curing agent pumped smoothly).

[0051] Specifically, spring expansion structure includes vertical mounting screw 22 fixedly connected to anti-blocking cone 21, and horizontal sliding rod 23 is installed at the top of vertical mounting screw 22, and sliding rod 23 is slidingly connected in grouting pipe 14.

[0052] Spring 23 is sleeved on sliding rod 23, and spring seat 231 is fixedly connected to the outer end of sliding rod 23, and the two ends of spring 23 are fixedly connected to spring seat 231 and the port edge position of grouting pipe 14 (correspondingly, a cylindrical sliding cavity is formed in grouting pipe 14 to slidingly connect sliding rod 23).

[0053] Meanwhile, the length of inner cone portion 211 is greater than the length of outer cone portion 212, and when the grouting port of grouting pipe 14 encounters water during the process of pumping curing agent, the curing agent coagulates to cause grouting to be not smooth, at this time, the operator pulls grouting pipe 14 back, grouting pipe 14 slides in the groove, and grouting pipe 14 is pushed into the groove again, and in this process, outer cone portion 212 abuts against the bottom of the groove, at this time, inner cone portion 211 of anti-blocking cone 21 continuously elastically expands and contracts in grouting pipe 14, and the sharpness of the tip of inner cone portion 211 is high, so that the coagulated curing agent block is continuously broken to achieve the purpose of dredging the block in the port position.

[0054] In the process, the grouting pipe 14 does not need to be pulled out of the trench, so the convenience and efficiency of dredging the pipe orifice blockage are greatly improved. During operation, the operator repeatedly pulls and pushes the grouting pipe 14 several times to break the blockage.

[0055] The rear end of the grouting pipe 14 is integrally formed with a connecting pipe 11, and a plurality of pump grouting pipes 12 are integrally formed on the connecting pipe 11. The inlet end of the pump grouting pipe 12 is integrally formed with a pump grouting pipe joint 13 (the pump grouting pipe joint 13 is a conventional pipe joint disclosed in the prior art, which is connected to an external pipe by a threaded connection).

[0056] According to the prior art, the pump grouting pipe joint 13 is installed on the pipe for pumping the curing agent, and the pipe is conveniently connected through the joint.

[0057] The curing agent slurry is pumped from the pump grouting pipe and then pumped out of the grouting pipe 14.

[0058] Embodiment 2

[0059] As shown in Figures 1-6 The embodiment is based on the structure of embodiment 1, and the inner end of the grouting pipe 14 is slidingly assembled with an adjusting and guiding mechanism 4. During the process of extending the grouting pipe 14 into the grouting trench pre-formed in the rock stratum, the posture of the grouting pipe 14 is adjusted through the adjusting and guiding mechanism, so that the grouting pipe 14 is conveniently extended into the grouting trench.

[0060] Specifically, the adjusting and guiding mechanism 4 includes a ball 42 slidingly connected to the grouting pipe 14 (a through hole is formed in the ball 42, and the grouting pipe 14 penetrates through the through hole), and a movable connecting piece 44 is installed on the top and bottom of the ball 42, respectively.

[0061] Specifically, the adjusting and guiding mechanism 4 further includes an outer annular seat 41, and the movable connecting piece is fixed on the outer annular seat 41.

[0062] Specifically, the movable connecting piece includes a movable rod 441, and a hinged ball 442 is fixedly connected to the top and bottom of the movable rod 441, respectively. Correspondingly, the hinged ball 442 is hinged to a hinged seat 443, and the hinged seat 443 is fixedly connected to the outer annular seat 41 and the ball 42, respectively.

[0063] When the grouting pipe 14 is extended into the trench, in order to conveniently push the grouting pipe 14, the posture of the grouting pipe 14 is adjusted, such as left and right pushing adjustment (at this time, the ball 42 swings left and right, and correspondingly, the ball 42 swings relative to the hinged ball 442 and the movable rod 441), and at the same time, the left and right rotation adjustment of the ball 42 and the grouting rod can be realized (at this time, the hinged ball 442 rotates relative to the hinged seat 443).

[0064] The above method allows for easy adjustment of the posture, making it easier to push the grouting rod into the trench, avoiding obstacles.

[0065] Example 3

[0066] like Figures 1-6 As shown, in this embodiment, based on the structure of embodiment 2, a sealing plate 3 is sleeved on the grouting pipe 14 (the sealing plate 3 has a through hole 31, and the through hole 31 and the grouting pipe 14 are kept at a distance to facilitate the adjustment of the posture of the grouting pipe 14 and avoid interference from the sealing plate). During the grouting process, the sealing plate is used to seal the rock wall.

[0067] Once the grouting pipe 14 has been inserted into the trench to the designated depth, the operator will press the sealing plate against the wall of the trench at the point where it penetrates the grouting pipe 14.

[0068] Several anchor rods 43 are slidably installed on the outer annular seat 41 (specifically, the outer wall of the outer annular seat 41 is integrally formed with an annular flange 411, and the anchor rods 43 slide on the annular flange 411); the anchor rods 43 are anchored to the rock stratum. The anchor rods 43 are driven into the rock stratum and then anchored. At the same time, because the anchor rods 43 are slidably connected to the sealing plate 3, the anchor rods 43 are threadedly connected to a push nut 431 that pushes the sealing plate.

[0069] At this point, push nut 431 toward the sealing plate and adjust it until it contacts the sealing plate 3 to seal.

[0070] This method achieves proper sealing of the sealing plate 3 in a tight state. In actual operation, a rubber sealing ring (pre-fitted onto the grouting rod) can be installed at the through hole of the sealing plate. Once the sealing plate contacts the rock wall, the rubber sealing ring (not shown in the figure) is inserted into the through hole to complete the seal. Alternatively, sealant can be directly injected into the through hole 31.

[0071] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A waterproof grouting plugging device for underground development tunneling, characterized in that, The injection mechanism comprises an injection pipe, and a blockage prevention structure is arranged on a discharge port of the injection pipe; The blockage prevention structure comprises a blockage prevention cone, which comprises an outer cone part outside the injection pipe and an inner cone part inside the injection pipe; The blockage prevention cone is slidably arranged on the injection pipe through a plurality of spring extension structures, and the blockage prevention cone is elastically extended in the rock layer to disperse the solid blocking agent solidified at the position of the discharge port of the injection pipe; The outer side wall of the blockage prevention cone is spaced apart from the inner side wall of the injection pipe; The length of the inner cone part is greater than the length of the outer cone part.

2. The waterproofing and grouting plugging device for underground development tunneling according to claim 1, characterized in that, The top and bottom of the blockage prevention cone are respectively fixedly connected with spring extension structures; The spring extension structure comprises a vertical mounting screw fixedly connected with the blockage prevention cone, a horizontally arranged slide rod is arranged on the top of the vertical mounting screw, and the slide rod is slidably connected in the injection pipe; A spring is sleeved on the slide rod, a spring seat is fixedly connected to the outer end of the slide rod, and the two ends of the spring are respectively fixedly connected with the spring seat and the edge of the discharge port of the injection pipe.

3. The waterproofing and grouting plugging device for underground development tunneling according to claim 1, characterized in that, The injection pipe is integrally formed with a connecting pipe; A plurality of pump slurry pipes are integrally formed on the connecting pipe, and a pump slurry pipe joint is integrally formed on the feed end of the pump slurry pipe.

4. The waterproofing and grouting plugging device for underground development tunneling according to claim 1, characterized in that, An adjusting and guiding mechanism is slidably assembled on the inner end of the injection pipe, the posture of the injection pipe is adjusted through the adjusting and guiding mechanism during the process of extending the injection pipe into the pre-formed injection groove of the rock layer, and the injection pipe is conveniently extended into the injection groove.

5. The waterproofing and grouting plugging device for underground development tunneling according to claim 4, characterized in that, The adjusting and guiding mechanism comprises a ball slidably connected with the injection pipe, and the top and bottom of the ball are respectively provided with movable connecting pieces; The adjusting and guiding mechanism further comprises an outer annular seat, and the movable connecting pieces are fixed on the outer annular seat.

6. The waterproofing and grouting plugging device for underground development tunneling according to claim 5, characterized in that, The movable connecting piece comprises a movable rod, and the top and bottom of the movable rod are respectively fixedly connected with hinged balls; The hinged balls are hingedly connected with hinged seats, and the hinged seats are respectively fixedly connected with the outer annular seat and the ball.

7. The waterproofing and grouting plugging device for underground development tunneling according to claim 5, characterized in that, A blocking plate is sleeved on the injection pipe, and the blocking plate is blocked on the rock wall during the injection process.

8. The waterproofing and grouting plugging device for underground development tunneling according to claim 7, characterized in that, A plurality of anchor rods are slidably mounted on the outer annular seat; The anchor rods are anchored on the rock layer.

9. The waterproofing and grouting plugging device for underground development tunneling according to claim 8, characterized in that, The anchor rods are slidably connected with the blocking plate, and a pushing nut for pushing the blocking plate is threadedly connected on the anchor rod.

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