CN202788739U - High pressure water inrush point non-pressure plugging structure - Google Patents

Abstract

The utility model discloses a high pressure water inrush point non-pressure plugging structure and belongs to the technical field of coal mining equipment. The high pressure water inrush point non-pressure plugging structure is used for coal mine lower baseboard confined water water inrush management and comprises a retention wall (2) and a slip stop wall (1). The high pressure water inrush point non-pressure plugging structure is characterized in that the retention wall (2) and the slip stop wall (1) are respectively wall bodies and are respectively arranged on the same side of a high pressure water inrush point (6). The width and the height of the slip stop wall (1) are no less than that of a roadway. The left face, the right face and the lower face of the retention wall (2) are respectively connected with the roadway. The upper face of the retention wall (2) approaches a back (7) as far as possible. A slip casting pipe (3) and water drain pipe (4) are arranged on the lower portion of the slip stop wall (1) in a buried mode. According to the high pressure water inrush point non-pressure plugging structure, a non-pressure slip filling plugging technique is adopted, and therefore the high pressure water inrush point non-pressure plugging structure has the advantages of being low in cost, simple in construction process, easy in slip casting and good in plugging effect.

Description

Pressureless plugging structure for high pressure water inrush point

technical field

The utility model relates to a pressureless plugging structure for a high-pressure water inrush point, which belongs to the technical field of coal mining equipment and is used for controlling water inrush of pressurized water in underground floors of coal mines. the

Background technique

At present, the plugging technologies for high-pressure water inrush points on the underground floor of coal mines mainly include dynamic water drilling and sealing and hydrostatic high-pressure sealing of sluice walls. Dynamic water drilling and grouting: The construction period is long. If the floor is broken, it is difficult to drill holes, and the grouting is likely to cause secondary damage to the floor. The construction of the sluice wall. It is very difficult to build a sluice wall in the area where the floor is broken, and high-pressure grouting is likely to cause secondary damage to the floor. the

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a pressureless plugging structure for high-pressure water inrush points with short construction period, low cost and low difficulty. the

The technical scheme adopted by the utility model to solve the technical problem is: the pressureless sealing structure of the high-pressure water inrush point, including a water retaining wall and a slurry wall, and is characterized in that: the said one side of the high-pressure water inrush point is arranged The water retaining wall and the slurry wall, the slurry wall is on the outside of the water retaining wall; the width and height of the slurry wall are greater than or equal to the width and height of the roadway; the left and right sides of the water retaining wall are respectively connected to the side walls of the two roadways. The bottom surface of the water wall is connected with the bottom plate of the roadway, and the edge of the retaining wall is close to the roof of the roadway; a grouting pipe is embedded in the lower part of the grouting wall, and a drain pipe passing through the grouting wall and the water retaining wall is buried above the grouting pipe. the

There are 2 to 4 drain pipes, which are respectively buried at different heights of the slurry wall and the water retaining wall, and the outlet of the uppermost drain pipe is directly above the high-pressure water inrush point. Described drainpipe can increase quantity according to actual conditions. the

The water retaining wall and the grouting wall are poured concrete. the

Cement grout is injected between the grout stop wall and the retaining wall. the

The high-pressure water inrush point pressureless sealing structure of the utility model adopts the high-pressure water inrush non-pressure sealing technology, which avoids the difficulty of building the sluice wall due to the damage of the bottom plate, and the phenomenon of secondary damage to the bottom plate caused by high-pressure grouting, and improves the success of grouting water blocking rate to prevent the bottom plate from being damaged again. the

Compared with the prior art, the beneficial effect of the pressureless plugging structure of the high-pressure water inrush point of the utility model is that the pressureless plugging structure of the high-pressure water inrush point is applied to the treatment of the pressurized water inrush of the underground floor of the coal mine, preventing It solves the situation that high-pressure grouting for drilling or high-pressure grouting for building sluice walls cannot be realized due to the broken floor, and improves the sealing effect of high-pressure water inrush grouting in the section where the floor is broken. The pressureless sealing technology of high-pressure water inrush points replaces the traditional bottom plate drilling and grouting and high-pressure grouting sealing technology for building sluice walls. The utility model adopts pressureless filling and grouting sealing technology , has the characteristics of low cost, simple construction process, easy grouting and good plugging effect. the

Description of drawings

Fig. 1 is a top view structural diagram of the high-pressure water inrush point non-pressure plugging structure of the utility model. the

Fig. 2 is a schematic diagram of the cross-sectional structure A-A of the non-pressure plugging structure of the high-pressure water inrush point of the present invention. the

Among them: 1. Grout stop wall 2. Water retaining wall 3. Grouting pipe 4. Drain pipe 5. Roadway side wall 6. High pressure water inrush point 7. Roadway roof 8. Roadway floor. the

Fig. 1-2 is the best embodiment of the pressureless plugging structure of the high-pressure water inrush point of the utility model, and the utility model will be further described below in conjunction with the accompanying drawings 1-2. the

Detailed ways

Referring to accompanying drawings 1-2: the pressureless sealing structure of the high-pressure water inrush point of the utility model includes a grout-stopping wall 1 and a water-retaining wall 2 . The water-retaining wall 2 and the grout-stop wall 1 are both cubic walls, which are located on the same side of the high-pressure water inrush point 6, and the grout-stop wall 1 is outside the water-retaining wall 2. The width and height of the grout-stop wall 1 are greater than or equal to the width and height of the roadway, and can seal the whole roadway. The left, right and lower sides of the water retaining wall 2 are respectively connected to the two roadway side walls 5 and the roadway floor 8, and the upper side is close to the roadway roof 7. Cement slurry is injected between the slurry wall 1 and the retaining wall 2 . A grouting pipe 3 is buried in the lower part of the grout-stop wall 1, and a drain pipe 4 passing through the grout-stop wall 1 and the water retaining wall 2 is buried upward, so that the high-pressure water inrush point is blocked without pressure at the high-pressure water inrush point inside the wall 6 protruding water can be exported. The discharge port of the uppermost discharge pipe is directly above the high-pressure water inrush point. The water retaining wall 2 and the grout stop wall 1 are poured concrete. the

Specific implementation of the utility model: according to the geological conditions around the high-pressure water inrush point, use concrete to pour a slurry wall 1, build a water-retaining wall 2 outside the high-pressure water inrush point 6, the wall height is as close as possible to the roadway roof 7, and Ensure that there is no water between the water retaining wall 2 and the grout stop wall 1, that is, the water retaining wall cannot leak, and the drain pipe 4 (also a grouting pipe) is buried in the water retaining wall 2 and the grout stop wall 1, so that the water flows along the drain pipe 4 To the outside of the slurry wall 1. From the grout stop wall 1 to the roadway roof 7 corresponding to the high-pressure water inrush point 6, the drain pipe 4 (and grouting pipe) is buried, and the number of grouting pipes 3 (drainage pipe) is buried according to the actual situation on site. Continuous grouting can be carried out after the construction of the grout stop wall 1 is completed. The grouting sequence is as follows: first inject the grouting pipeline at the bottom of the grout stop wall 1 to ensure that the drain pipe 4 in the retaining wall 2 can discharge water normally. When the retaining wall 2 flows out from the drain pipe 4, close the grouting valve. Carry out grouting with drainpipe 4 instead, and guarantee that the drainpipe 4 at the top of the outlet point can drain normally, and when the drainpipe 4 at the top has grout to flow out, close the grouting valve. Carry out grouting with grouting pipe 3 instead. When the design requirements are met, stop grouting. the

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. Equivalent embodiment. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solution of the utility model still belong to the protection scope of the technical solution of the utility model. the

Claims (4)

1. The pressureless sealing structure of the high-pressure water inrush point, including the water retaining wall (2) and the slurry wall (1), characterized in that: the water retaining wall ( 2) and the grout-stop wall (1), the grout-stop wall (1) is on the outside of the water-retaining wall (2); the width and height of the grout-stop wall (1) are greater than or equal to the width and height of the roadway; the water-retaining wall (2) The left and right side surfaces of the water retaining wall (2) are connected to the roadway side walls (5) respectively, the bottom surface of the water retaining wall (2) is connected with the roadway floor (8), and the upper edge of the water retaining wall (2) is close to the roadway roof (7); A grouting pipe (3) is embedded in the lower part of (1), and a drain pipe (4) passing through the grout stop wall (1) and the water retaining wall (2) is buried above the grouting pipe (3). 2. The non-pressure sealing structure of high-pressure water inrush point according to claim 1, characterized in that: said drain pipes (4) are provided with 2~4 pieces, which are buried in the grout-stop wall (1) and the water-retaining wall respectively. On the different heights of the wall (2), the discharge port of the topmost discharge pipe (4) is directly above the high-pressure water inrush point (6). 3. The non-pressure sealing structure for high-pressure water inrush points according to claim 1, characterized in that: the water retaining wall (2) and the grout-stop wall (1) are made of concrete. 4. The pressureless sealing structure for high-pressure water inrush points according to claim 1, characterized in that: grout is injected between the grout-stop wall (1) and the water-retaining wall (2).

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