Water plugging and grouting device

Abstract

The utility model relates to a water plugging grouting device, which solves the problems of repeated invalid grouting and repeated re-drilling during curtain grouting, an orifice pipe is matched with the right end of a drill hole, a right end flange of a supporting pipe is connected with the right end flange of the orifice pipe through a bolt, a plurality of supporting rings are arranged on the inner wall of the supporting pipe and are movably matched with the outer wall of a grouting pipe, and a sealing plate is connected with the left end of the supporting pipe. A center hole of the sealing plate is in movable fit with the outer wall of the grouting pipe. The supporting pipe is formed by connecting a head section, a tail section and a plurality of middle standard sections through normal threads, the sealing plate is located at the left end of the head section, the supporting pipe right end flange is located at the right end of the tail section, the length of the supporting pipe is equal to the sum of a grouting section and a grouted section, and the diameter of the supporting pipe is smaller than the diameter of a drill hole.

Description

Technical Field

[0001] The utility model relates to a water blocking grouting device for tunnel curtain grouting construction. Background Art

[0002] Traditional tunnel curtain grouting construction adopts forward segmented grouting. The drilling is on the central axis of the entire grouting area and is divided into several sections. After the drilling of the front section is completed, the drill bit is taken out and the grouting pipe is inserted for grouting. After the grouting is completed and the slurry solidifies, the drill hole of the grouting section is filled with slurry and solidified. When grouting the rear section, it is necessary to drill the grouting section again and then enter the new rock layer for drilling and grouting. In this way, the grouting section is repeatedly drilled, and the grouting section will be ineffectively grouted many times, resulting in a waste of time and materials. Summary of the invention

[0003] The utility model aims to provide a water blocking grouting device which is easy to process, manufacture and install, convenient for operators to operate and can avoid multiple invalid grouting and multiple re-drilling of completed grouting sections during curtain grouting.

[0004] The purpose of the utility model is achieved in this way:

[0005] The orifice pipe 7 cooperates with the right end of the borehole, the right end flange 4 of the support pipe 3 is connected to the right end flange of the orifice pipe by bolts 6, the inner wall of the support pipe 3 is provided with several support rings 5 ​​which movably cooperate with the outer wall of the grouting pipe 1, the sealing plate 2 is connected to the left end of the support pipe 3, and the center hole of the sealing plate 2 movably cooperates with the outer wall of the grouting pipe 1. The support pipe 3 is composed of a first segment, a tail segment, and several intermediate standard segments. Adjacent segment components are connected by threads. The sealing plate 2 is located at the left end of the first segment, and the right end flange 4 of the support pipe 3 is located at the right end of the tail segment. The length of the support pipe 3 is equal to the sum of the current grouting segment and the grouting segment. The diameter of the support pipe 3 is smaller than the diameter of the borehole. The grouting pipe 1 is composed of several grouting pipe sections. When grouting in sections, the support pipe 3 adds intermediate standard sections, and the grouting pipe 1 also needs to increase grouting pipe sections of equal length accordingly. The added grouting pipe sections are connected by threads.

[0006] The inner wall of the support tube 3 is coated with a release agent layer to avoid adhesion with cement slurry.

[0007] The support ring is composed of coaxial inner and outer rings connected together, the inner ring cooperates with the grouting pipe 1 , and the outer ring cooperates with the support pipe 3 .

[0008] The grouting pipe 1 is a cement slurry conveying pipeline during grouting.

[0009] The support ring 5 is used to support the grouting pipe.

[0010] The sealing plate 2 is used to connect and seal the grouting pipe 1 and the supporting pipe 3 .

[0011] The support pipe 3 is used to support the slurry during grouting. After the grouting is completed, the support pipe 3 and the grouting pipe 1 are taken out, and the grouting sections are divided into sections to form a channel.

[0012] The flange is used to connect and seal the support pipe 3 and the orifice pipe inlet 7.

[0013] The bolts 6 are used to connect and seal the flange.

[0014] Beneficial effects of the utility model

[0015] The utility model is used for water blocking grouting (curtain grouting) construction when the tunnel passes through poor hydrogeology, especially when there are extremely broken surrounding rocks, mostly gravel mixed with mud, and rich in water. During grouting, multiple invalid grouting and multiple re-drilling of the completed grouting section are performed. During the grouting process, the utility model is used to assist grouting, support the grouting slurry, and after the grouting is completed, the grouting equipment is taken out to form a channel in the hole. The structure is simple, the construction is convenient, and the construction period is short.

[0016] Compared with the traditional construction method, the utility model is easy to manufacture, process and install, simple to operate, efficient and reliable, safe, civilized and standardized. It not only greatly speeds up the construction efficiency of grouting, but also avoids the curtain grouting construction. It adopts forward segmented grouting. After the drilling of the first single section is completed, the grouting pipe is inserted for grouting. After the grouting is completed and the slurry solidifies, when grouting the adjacent single section drilling, it is necessary to drill the grouting section again and then enter the new rock layer for drilling and grouting. In this way, the grouting section is repeatedly drilled, and the grouting section will be invalidly grouted for many times, resulting in a waste of time and materials. It improves safety assurance, speeds up work efficiency, achieves the effective effect of water blocking grouting, and ensures the safety of the tunnel excavation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the first section of the utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the middle standard segment of the utility model.

[0020] Figure 4 It is a schematic diagram of the tail segment structure of the utility model. DETAILED DESCRIPTION

[0021] The orifice pipe 7 cooperates with the right end of the borehole, the right end flange 4 of the support pipe 3 is connected to the right end flange of the orifice pipe by bolts 6, the inner wall of the support pipe 3 is provided with several support rings 5 ​​which movably cooperate with the outer wall of the grouting pipe 1, the sealing plate 2 is connected to the left end of the support pipe 3, and the center hole of the sealing plate 2 movably cooperates with the outer wall of the grouting pipe 1. The support pipe 3 is composed of a first segment, a tail segment, and several intermediate standard segments. Adjacent segment components are connected by threads. The sealing plate 2 is located at the left end of the first segment, and the right end flange 4 of the support pipe 3 is located at the right end of the tail segment. The length of the support pipe 3 is equal to the sum of the current grouting segment and the grouting segment. The diameter of the support pipe 3 is smaller than the diameter of the borehole. The grouting pipe 1 is composed of several grouting pipe sections. When grouting in sections, the support pipe 3 adds intermediate standard sections, and the grouting pipe 1 also needs to increase grouting pipe sections of equal length accordingly. The added grouting pipe sections are connected by threads.

[0022] The inner wall of the support tube 3 is coated with a release agent layer to avoid adhesion with cement slurry.

[0023] When grouting is performed through the grouting pipe 1, the sealing plate 2 connects the grouting pipe 1 with the support pipe 3, and plays the role of support and sealing plate at the same time; the support pipe 3 supports the cement slurry to form a channel in the hole, and no re-drilling will be performed later; the grouting pipe 1 is supported by the support ring 5 in the support pipe 3 to avoid the phenomenon of grouting pipe disconnection due to the long pipeline; the pipe tail flange 4 is connected to the orifice pipe flange by bolts 6 to close the grouting hole to ensure closed grouting; when installing this grouting equipment, a release agent is applied to the support pipe 3 to avoid adhesion between the pipe and the cement slurry. The use of this equipment to assist in grouting avoids multiple invalid grouting and multiple re-drilling of the completed grouting section, reduces the consumption of funds, materials and time, and also ensures construction safety and progress.

Claims

1. Water blocking grouting device, characterized in that: The orifice pipe (7) is matched with the right end of the drill hole, the right end flange (4) of the support pipe (3) is connected to the right end flange of the orifice pipe through bolts (6), the inner wall of the support pipe (3) has a plurality of support rings (5) which are dynamically matched with the outer wall of the grouting pipe (1), the sealing plate (2) is connected to the left end of the support pipe (3), and the center hole of the sealing plate (2) is dynamically matched with the outer wall of the grouting pipe (1). The support pipe (3) is composed of a head section, a tail section, and a plurality of intermediate sections. Adjacent section components are connected by threads. The sealing plate (2) is located at the left end of the head section. The flange (4) at the right end of the support pipe (3) is located at the right end of the tail section. The length of the support pipe (3) is equal to the sum of the current grouting section and the grouting section. The diameter of the support pipe (3) is smaller than the diameter of the borehole. The grouting pipe (1) is composed of a plurality of grouting pipe sections. When grouting is performed in sections, the support pipe (3) is increased with intermediate sections, and the grouting pipe (1) is also increased with grouting pipe sections of equal length. The increased grouting pipe sections are connected by threads.

2. The water blocking grouting device according to claim 1, characterized in that: The inner wall of the support tube (3) is coated with a release agent layer to prevent adhesion with cement slurry.

3. The water blocking grouting device according to claim 1, characterized in that: The support ring (5) is composed of coaxial inner and outer rings connected together, the inner ring cooperates with the grouting pipe, and the outer ring cooperates with the support pipe.

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