Shaft deep consolidation grouting structure

Abstract

The utility model discloses a deep consolidation grouting structure for a vertical shaft, relates to the field of vertical shafts, and aims to solve the problem that the process is tedious due to the fact that grouting cover weight needs to be poured firstly and then a grouting platform needs to be erected for drilling and grouting layer by layer during consolidation grouting of the current vertical shaft. The independent construction grouting cover heavy link is reduced, the arrangement of the orifice pipe and the slurry injection pipe enables the grouting operation to be simpler and more convenient, layer-by-layer construction of a complex platform is avoided, and the construction process is simplified; the grouting cover plate is stabilized through the pre-embedded ground anchor and the anchor rod, so that the construction platform is built more stably, and the construction difficulty and the safety risk are reduced; and through the arrangement of the orifice pipe and the slurry jetting pipe, grouting operation can be carried out near the well mouth, and the danger of layer-by-layer operation on the deep well wall is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of structure repair, especially a vertical shaft deep consolidation grouting structure. BACKGROUND

[0002] The vertical shaft adopts vertical excavation and passes through many kinds of rock layers, and the anti-seepage, compression resistance and safety requirements are high, generally adopts the consolidation grouting mode to reinforce the surrounding rock, especially for the vertical shaft near the reservoir area.

[0003] At present, the traditional vertical shaft consolidation grouting generally pours the grouting cover plate after the initial support, then sets up the grouting platform along the shaft wall, and carries out the drilling grouting layer by layer along the shaft wall. UTILITY MODEL CONTENT

[0004] The utility model discloses a vertical shaft deep consolidation grouting structure, which combines the functions of the grouting cover plate and the lock mouth ring beam, reduces the separate construction of the grouting cover plate, and sets the orifice pipe and the jetting pipe, so that the grouting operation is more convenient, the complex platform is avoided, the construction process is simplified, the pre-buried ground anchor and the anchor rod are used to stabilize the grouting cover plate, the construction platform is more stable, the construction difficulty and the safety risk are reduced, the orifice pipe and the jetting pipe are set, the grouting operation can be carried out near the shaft mouth, and the danger of the layer-by-layer operation in the deep shaft wall is reduced.

[0005] In order to realize the above-mentioned purpose, the following technical scheme is adopted:

[0006] A vertical shaft deep consolidation grouting structure comprises:

[0007] The grouting cover plate is distributed around the shaft mouth of the shaft body to form a lock mouth ring beam, the top surface of the grouting cover plate is provided with a pre-buried ground anchor, and the grouting cover plate is connected with an anchor rod implanted in the soil around the shaft body.

[0008] The orifice pipe penetrates through the grouting cover plate and is distributed around the shaft body, the orifice pipe is provided with a jetting pipe, one end of the jetting pipe extends into the soil around the shaft body, the other end of the jetting pipe extends to the orifice pipe, and the jetting pipe and the orifice pipe are filled with an orifice blocking piece to constrain the position of the jetting pipe.

[0009] As a further preferred, the grouting cover plate comprises horizontal plates and vertical plates, the vertical plates are distributed vertically along the shaft body and are attached to the sidewall of the shaft body, and the horizontal plates are distributed circumferentially around the vertical plates and are connected to the vertical plates, so that the cross section of the grouting cover plate is L-shaped.

[0010] As a further preferred, the top surface of the grouting cover plate is flush with the well mouth, and the top end of the grouting pipe is located above the top surface of the grouting cover plate.

[0011] As a further preferred, a plurality of anchor rods are connected to the vertical plates, one end of the anchor rods is connected to the vertical plates, and the other end is distributed away from the shaft body.

[0012] As a further preferred, a plurality of anchor rods are also connected to the horizontal plates, and the anchor rods connected to the horizontal plates are distributed obliquely relative to the shaft axis.

[0013] As a further preferred, the anchor rods are mortar anchor rods.

[0014] As a further preferred, the grouting pipe is arranged in the grouting hole, and the top end of the grouting hole is communicated with the orifice pipe, and one end of the grouting pipe penetrates into the grouting hole after passing through the orifice pipe.

[0015] As a further preferred, a plurality of ground anchors are pre-buried in the grouting cover plate, and the top end of the ground anchors protrudes from the top surface of the grouting cover plate.

[0016] As a further preferred, a steel mesh is arranged on the surface layer of the grouting cover plate, and the steel mesh is connected to the anchor rods.

[0017] As a further preferred, the orifice plugging member is in sliding fit with the grouting pipe and forms a sliding seal.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] In view of the problem that the current vertical shaft consolidation grouting needs to first cast a grouting cover and then build a grouting platform to drill and grout layer by layer, resulting in a complicated process, the grouting cover plate is arranged to form a locking ring beam around the well mouth, the functions of the grouting cover plate and the locking ring beam are combined, the separate construction of the grouting cover is reduced, the orifice pipe and the grouting pipe are arranged, the grouting operation is more convenient, the complex platform is avoided to be built layer by layer, and the construction process is simplified; the pre-buried ground anchors and anchor rods are used to stabilize the grouting cover plate, the construction platform is more stable, and the construction difficulty and safety risk are reduced; and the orifice pipe and the grouting pipe are arranged, the grouting operation can be performed near the well mouth, and the danger of layer-by-layer operation on the deep well wall is reduced.

[0020] The arrangement of the orifice pipe and the grouting pipe enables the slurry to be more accurately injected into the circumferential soil of the shaft body; the orifice plugging member constrains the radial position of the grouting pipe and forms a sliding seal with the grouting pipe, ensures that the slurry is injected according to the design requirements, avoids slurry leakage, and guarantees the grouting quality, thereby improving the anti-seepage and compression resistance of the rock mass.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of the vertical shaft deep consolidation grouting structure in the embodiment of the utility model.

[0022] Figure 2 It is a schematic view of the relative position of the shaft body and the mortar anchor rod in the embodiment of the utility model.

[0023] Reference signs (in the order of first appearance): 1, shaft body; 2, grouting cover plate; 3, mortar anchor rod; 4, ground anchor; 5, grouting hole; 6, orifice pipe; 7, orifice plugging piece; 8, grout injection pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application.

[0025] The traditional vertical shaft consolidation grouting has problems such as complicated process, increasing construction difficulty and safety risk with depth, long construction period of inspection hole, etc. Based on this, the embodiment provides a vertical shaft deep consolidation grouting structure, sets a grouting cover plate 2 and makes it have the function of locking the mouth ring beam, reduces the separate construction grouting cover heavy link; sets an orifice pipe 6 and a grout injection pipe 8, simplifies the grouting operation process, avoids building a complex platform layer by layer; uses a pre-buried ground anchor 4 and an anchor rod to stabilize the grouting cover plate 2, reduces the construction difficulty and safety risk, and can also work near the wellhead, reducing the danger of layer-by-layer operation of the deep well wall.

[0026] As shown in Figure 1 and Figure 2 , the vertical shaft deep consolidation grouting structure mainly includes a grouting cover plate 2, an orifice pipe 6 and a grout injection pipe 8.

[0027] Among them, the grouting cover plate 2 is distributed around the wellhead to form a locking mouth ring beam, which not only can play a protective and reinforcing role on the wellhead, but also can be used as a basic platform for grouting construction. The ground anchor 4 pre-buried on the top can be used to connect and fix the construction equipment or build a construction platform, enhancing the stability. The connected anchor rod is implanted around the soil body of the shaft body 1, which can effectively enhance the connection between the soil body and the grouting cover plate 2, further improve the stability of the overall structure, and prevent the soil body around the wellhead from loosening and collapsing.

[0028] A plurality of orifice pipes 6 are distributed circumferentially around the shaft body 1 and penetrate the grouting cover plate 2, providing a stable channel for the grouting pipe 8. One end of the grouting pipe 8 extends into the circumferential soil of the shaft body 1 for injecting slurry, and the other end extends above the orifice pipe 6 for operation, which can be connected to the grouting equipment. The orifice blocking member 7 is filled between the grouting pipe 8 and the orifice pipe 6, which can not only constrain the position of the grouting pipe 8 to prevent it from shaking and affecting the grouting effect, but also play a sealing role to avoid slurry leakage, so that the grouting operation is concentrated near the wellhead, without the need for drilling and grouting layer by layer in the deep well wall, greatly simplifying the construction process.

[0029] By setting the grouting cover plate 2 and the grouting pipe 8, the construction process of the vertical shaft deep consolidation grouting can be simplified, the construction difficulty and safety risk can be reduced, the construction efficiency can be improved, the grouting quality can be ensured, the stability of the soil around the vertical shaft can be enhanced, and the requirements for vertical shaft seepage prevention, pressure resistance and safety can be met.

[0030] As shown in Figure 1 , the grouting cover plate 2 includes a horizontal plate and a vertical plate. The vertical plate is distributed vertically along the shaft body 1 and is attached to the sidewall of the shaft body 1. The horizontal plate is circumferentially distributed around the vertical plate and is connected to the vertical plate, so that the cross section of the grouting cover plate 2 is L-shaped. The grouting cover plate 2 adopts an L-shaped structure composed of a horizontal plate and a vertical plate. The vertical plate is attached to the sidewall of the shaft body 1 and can directly support the shaft wall to enhance the stability of the shaft wall. The horizontal plate is circumferentially distributed around the vertical plate, which expands the contact area between the grouting cover plate 2 and the surrounding soil, better disperses the grouting pressure, prevents the deformation or damage of the soil around the wellhead due to pressure concentration, makes the grouting cover plate 2 more reasonable in bearing and force transmission, and improves the stability of the overall structure.

[0031] The top surface of the grouting cover plate 2 is flush with the wellhead, which on the one hand facilitates the operation of the construction personnel at the wellhead, such as equipment placement and material transportation, and on the other hand ensures the flatness of the surrounding wellhead and reduces safety hazards. The top end of the grouting pipe 8 is located above the top surface of the grouting cover plate 2, which facilitates the connection of the grouting equipment by the construction personnel and the injection of slurry, improving the convenience of construction.

[0032] As shown in Figure 1 , a plurality of anchor rods are connected to the vertical plate, with one end connected to the vertical plate and the other end distributed away from the shaft body 1. A plurality of anchor rods are also connected to the horizontal plate, and the anchor rods connected to the horizontal plate are inclinedly distributed relative to the axis of the shaft body 1.

[0033] The vertical plate and the horizontal plate are connected with a plurality of anchor rods, the anchor rods on the vertical plate are distributed away from the shaft body 1, which can effectively stabilize the structure of the vertical plate, the horizontal plate is supported from the top end of the vertical plate, the anchor rods are supported from the middle and lower part of the horizontal plate, the soil around the shaft body 1 moves into the shaft, and the lateral stability of the soil is enhanced; the anchor rods obliquely distributed on the horizontal plate further expand the anchoring range, the soil is reinforced from different angles, and the anti-sliding and anti-deformation abilities of the soil are improved. The various anchor rod arrangement modes are matched with each other, the connection between the grouting cover plate 2 and the surrounding soil is enhanced in all directions, and the stability of the whole structure is improved.

[0034] In the embodiment, the anchor rod is a mortar anchor rod 3, the mortar anchor rod 3 is used to tightly combine the anchor rod and the soil by the adhesion of mortar, so that the anchor rod can better transmit the tensile force and the shear force. The mortar anchor rod 3 has good durability and corrosion resistance, can maintain stable anchoring performance in a long-term underground environment, and ensures the long-term stability of the shaft deep consolidation grouting structure. In the embodiment, the mortar anchor rod 3 is arranged at a certain inclination angle along the outside of the shaft ring, can connect the grouting cover plate 2 into an organic whole, increases the stability of the shaft mouth surrounding rock, and reduces the uplift deformation of the structure caused by high-pressure grouting.

[0035] For the structure related to consolidation grouting, the mortar injection pipe 8 is matched with the grouting hole 5, the mortar injection pipe 8 is arranged in the grouting hole 5, the top end of the grouting hole 5 is connected with the orifice pipe 6, one end of the mortar injection pipe 8 penetrates into the grouting hole 5 through the orifice pipe 6, and the slurry can be more accurately injected into the predetermined soil area. The grouting hole 5 provides a guiding and positioning function for the mortar injection pipe 8, ensures that the slurry is uniformly diffused into the soil, improves the grouting effect, and enhances the anti-seepage and compression resistance of the rock mass.

[0036] A plurality of ground anchors 4 are embedded in the grouting cover plate 2, the top end of the ground anchor 4 protrudes from the top surface of the cover plate, facilitates connection with external equipment or structure during construction, such as fixing a construction platform, lifting equipment and the like, and enhances the safety and stability of the construction process. The steel mesh arranged on the surface of the cover plate is connected with the anchor rod, the steel mesh can enhance the overall strength and crack resistance of the grouting cover plate 2, cooperates with the anchor rod, and further improves the stability of the grouting cover plate 2 and the surrounding soil, so as to prevent the cover plate from being cracked or damaged due to grouting pressure or soil deformation.

[0037] The orifice plugging member 7 is in sliding cooperation with the mortar injection pipe 8 and forms a sliding seal, in the construction process, the position of the mortar injection pipe 8 in the orifice pipe 6 is stable, the mortar injection pipe 8 is prevented from shaking to affect the grouting accuracy, the sliding seal is ensured with the insertion and extraction of the mortar injection pipe 8, slurry leakage is avoided, the grouting quality is ensured, the slurry can be fully filled into the soil pores, and the expected consolidation effect is achieved.

[0038] In the embodiment, the orifice pipe 6 is embedded in the grouting cover plate 2, the diameter of the orifice pipe 6 should match the diameter of the orifice section drilling hole, and a seamless steel pipe with a diameter of 73mm to 108mm is usually used. The jet pipe 8 uses the orifice sealing method, and a circulating grouting is used. In order to increase the slurry flow rate and prevent the slurry in the hole from depositing, a large-diameter drill pipe can be used as the jet pipe 8, and the jet pipe 8 is provided with a slurry outlet hole.

[0039] The grouting pressure can be appropriately increased. When high-pressure grouting is used, the rock around the grouting hole 5 is not naturally split, but the original fissure is widened and extended, greatly improving the groutability of the rock stratum and increasing the slurry absorption amount, thereby enhancing the grouting effect. The grouting is performed from top to bottom while drilling.

[0040] The specific embodiments of the utility model are described in detail above, but it is only as an example, and the utility model is not limited to the specific embodiments described above. Any equivalent modification or replacement of the utility model for the skilled in the art is also within the scope of the utility model, and therefore, the equivalent transformation, modification, improvement, etc. made without departing from the spirit and principle range of the utility model should be covered in the scope of the utility model.

Claims

1. A shaft deep soil consolidation grouting structure characterized by, The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

2. The shaft deep soil consolidation grouting structure according to claim 1, wherein The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

3. The shaft deep soil consolidation grouting structure according to claim 2, wherein The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

4. The shaft deep soil consolidation grouting structure according to claim 2 or 3, characterized by, The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

5. The shaft deep soil consolidation grouting structure according to claim 4, wherein The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

6. The shaft deep soil consolidation grouting structure according to claim 1, wherein The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

7. The shaft deep soil consolidation grouting structure according to claim 1, wherein The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

8. The shaft deep soil consolidation grouting structure according to claim 1 or 7, wherein The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

9. The shaft deep soil consolidation grouting structure according to claim 1, wherein The utility model relates to a grouting cover plate and a well mouth structure comprising the same.

10. The shaft deep soil consolidation grouting structure according to claim 1 or 9, wherein The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model relates to a grouting cover plate and a well mouth structure comprising the same. The utility model

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