Water stopping and reinforcing structure of tunnel water-rich broken accumulation body section

Abstract

The utility model relates to the technical field of tunnels, and provides a water stopping and reinforcing structure of a tunnel water-rich broken accumulation body section, which comprises a water stopping structure and a reinforcing structure of a broken accumulation body stratum arranged above a target tunnel, the curtain grouting structure vertically extends to a complete rock stratum located above a target tunnel from the earth surface so as to prevent seepage water outside the curtain grouting structure from entering the inner side of the curtain grouting structure, and the reinforcing structure comprises a primary grouting structure and a secondary grouting structure. The primary grouting structure and the secondary grouting structure extend to a complete rock stratum located above the target tunnel from the earth surface in the vertical direction, and the primary grouting structure and the secondary grouting structure are used for reinforcing a residual slope accumulation body stratum located on the inner side of the curtain grouting structure. According to the method, curtain grouting and grouting reinforcement technologies are comprehensively applied, the safety during tunnel construction and operation is effectively improved, and disaster accidents such as water gushing and collapse caused by stratum instability and water disasters are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel technical field especially a tunnel rich water residual broken accumulation body section's water stop reinforcing structure. BACKGROUND

[0002] For many years, there are a large number of tunnel grouting practices in engineering field, but its design is mainly determined by experience, and for the large-section tunnel underpassing rich water residual slope accumulation body, especially the grouting scheme of shallow-buried small-spacing large-section tunnel has not been systematically researched. If curtain grouting is used in large area, the cost is too expensive, so it is not very realistic to implement. If anchor rod or steel flower pipe grouting is used, the water stopping effect is difficult to guarantee. Therefore, the traditional grouting process is difficult to effectively guarantee the safety and stability of the tunnel passing through the rich water residual slope accumulation body area, and disasters such as in-hole water gushing and collapse are prone to occur.

[0003] Therefore, it is necessary to provide a tunnel rich water residual broken accumulation body section water stop reinforcing structure to solve or at least alleviate the above-mentioned defects. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the utility model is to provide a tunnel rich water residual broken accumulation body section water stop reinforcing structure to solve the technical problem that in the prior art, the grouting scheme of the large-section tunnel underpassing rich water residual slope accumulation body, especially the shallow-buried small-spacing large-section tunnel has not been systematically researched, which leads to disasters such as in-hole water gushing and collapse.

[0005] To achieve the above-mentioned purpose, the utility model provides a tunnel rich water residual broken accumulation body section water stop reinforcing structure, which comprises a water stop structure and a reinforcing structure of residual slope accumulation body stratum arranged above a target tunnel, wherein the water stop structure is a curtain grouting structure, the curtain grouting structure extends vertically from the ground to the complete rock layer above the target tunnel, and the curtain grouting structure is in the form of a frame to prevent water outside the curtain grouting structure from entering the inside of the curtain grouting structure.

[0006] The reinforcing structure comprises a primary grouting structure and a secondary grouting structure, both of which extend vertically from the ground to the complete rock layer above the target tunnel, and both of which are arranged inside the curtain grouting structure, and the primary grouting structure and the secondary grouting structure are used to reinforce the residual slope accumulation body stratum inside the curtain grouting structure.

[0007] Preferably, the target tunnel comprises a left tunnel line and a right tunnel line, the curtain grouting structure comprises an intermediate curtain grouting structure between the left tunnel line and the right tunnel line, a first longitudinal curtain grouting structure outside the left tunnel line, a second longitudinal curtain grouting structure outside the right tunnel line, and two transverse curtain grouting structures arranged at intervals along the extension direction of the target tunnel, and the intermediate curtain grouting structure, the first longitudinal curtain grouting structure, the second longitudinal curtain grouting structure and the transverse curtain grouting structures form a pinwheel structure in a plane.

[0008] Preferably, the first longitudinal curtain grouting structure comprises three first longitudinal curtain grouting rows arranged at intervals along the transverse direction of the left tunnel line, each of the first longitudinal curtain grouting rows comprises a plurality of first curtain grouting units arranged at intervals along the longitudinal direction of the left tunnel line, and the first curtain grouting units of adjacent two first longitudinal curtain grouting rows are arranged in a quincunx pattern.

[0009] Preferably, the second longitudinal curtain grouting structure comprises three second longitudinal curtain grouting rows arranged at intervals along the transverse direction of the right tunnel line, each of the second longitudinal curtain grouting rows comprises a plurality of second curtain grouting units arranged at intervals along the longitudinal direction of the right tunnel line, and the second curtain grouting units of adjacent two second longitudinal curtain grouting rows are arranged in a quincunx pattern.

[0010] Preferably, the primary grouting structure comprises a plurality of left tunnel primary grouting unit rows arranged at intervals along the transverse direction of the left tunnel line and a plurality of right tunnel primary grouting unit rows arranged at intervals along the transverse direction of the right tunnel line, each of the left tunnel primary grouting unit rows comprises a plurality of left tunnel primary grouting units arranged at intervals along the longitudinal direction of the left tunnel line, the left tunnel primary grouting units of adjacent two left tunnel primary grouting unit rows are arranged in a quincunx pattern, each of the right tunnel primary grouting unit rows comprises a plurality of right tunnel primary grouting units arranged at intervals along the longitudinal direction of the right tunnel line, and the right tunnel primary grouting units of adjacent two right tunnel primary grouting unit rows are arranged in a quincunx pattern.

[0011] Preferably, the secondary grouting structure comprises a plurality of left tunnel secondary grouting unit rows arranged at intervals along the transverse direction of the left tunnel line and a plurality of right tunnel secondary grouting unit rows arranged at intervals along the transverse direction of the right tunnel line, each of the left tunnel secondary grouting unit rows comprises a plurality of left tunnel secondary grouting units arranged at intervals along the longitudinal direction of the left tunnel line, the left tunnel secondary grouting units of adjacent two left tunnel secondary grouting unit rows are arranged in a quincunx pattern, each of the right tunnel secondary grouting unit rows comprises a plurality of right tunnel secondary grouting units arranged at intervals along the longitudinal direction of the right tunnel line, and the right tunnel secondary grouting units of adjacent two right tunnel secondary grouting unit rows are arranged in a quincunx pattern.

[0012] Preferably, the left line secondary grouting unit rows and the left line primary grouting unit rows are staggered in the transverse direction of the left line tunnel, and the right line secondary grouting unit rows and the right line primary grouting unit rows are staggered in the transverse direction of the right line tunnel.

[0013] Preferably, the spacing between the first curtain grouting units of the two adjacent first longitudinal curtain grouting rows arranged in a quincunx pattern is 1.2*1.2m, and the spacing between the second curtain grouting units of the two adjacent second longitudinal curtain grouting rows arranged in a quincunx pattern is 1.2*1.2m.

[0014] Preferably, the spacing between the left line primary grouting units of the two adjacent left line primary grouting unit rows arranged in a quincunx pattern is 1.2*1.2m, and the spacing between the right line primary grouting units of the two adjacent right line primary grouting unit rows arranged in a quincunx pattern is 1.2*1.2m.

[0015] Preferably, the spacing between the left line secondary grouting units of the two adjacent left line secondary grouting unit rows arranged in a quincunx pattern is 1.2*1.2m, and the spacing between the right line secondary grouting units of the two adjacent right line secondary grouting unit rows arranged in a quincunx pattern is 1.2*1.2m.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The curtain grouting and grouting reinforcement technology are comprehensively applied in the application, the safety during tunnel construction and operation is effectively improved, and disasters such as water gushing and collapse caused by stratum instability and water damage are reduced. Specifically, the curtain grouting structure extends from the ground to the complete rock layer above the target tunnel in the vertical direction, forming a frame type water stop barrier. The main function of the curtain grouting structure is to prevent water outside the curtain from seeping into the inside of the curtain, thereby reducing the water damage risk during tunnel construction and operation. The primary grouting structure also extends from the ground to the complete rock layer in the vertical direction and is located on the inside of the curtain grouting structure, and the primary grouting structure preliminarily reinforces the stratum of the residual slope accumulation body on the inside of the curtain grouting structure, thereby improving the stability and bearing capacity of the stratum. On the basis of the primary grouting structure, the secondary grouting structure further reinforces the stratum, and the primary grouting structure and the secondary grouting structure jointly act on the stratum of the residual slope accumulation body on the inside of the curtain grouting structure, thereby improving the stability and bearing capacity of the stratum through grouting reinforcement, and providing a solid foundation for the construction and operation of the tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described in the following only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without any creative labor.

[0019] Fig. 1 It is a schematic diagram of the plane arrangement of the overall structure in an embodiment of the present application.

[0020] Fig. 2 It is a schematic diagram of the cross-sectional arrangement of the overall structure in an embodiment of the present application.

[0021] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings.

[0022] Explanation of reference signs:

[0023] 110, left line of tunnel; 120, right line of tunnel; 210, intermediate curtain grouting structure; 220, first longitudinal curtain grouting structure; 230, second longitudinal curtain grouting structure; 240, transverse curtain grouting structure; 250, first grouting hole; 260, pre-reinforced area; 270, grouting steel pipe; 310, left line primary grouting unit row; 320, right line primary grouting unit row; 330, second grouting hole; 410, left line secondary grouting unit row; 420, right line secondary grouting unit row; 430, third grouting hole; 50, residual accumulation accumulation stratum; 60, complete rock stratum. DETAILED DESCRIPTION

[0024] It should be understood that the specific embodiments described herein are merely intended to explain the present application, and are not intended to limit the present application.

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and are not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative labor are within the scope of protection of the present application.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as described in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0027] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, 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 of the features. In addition, the technical solutions of various embodiments can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0028] Please refer to the accompanying Figs. 1-2 The utility model provides a kind of water stop reinforcement structure of tunnel water-rich residual broken accumulation body section in one embodiment provided by the utility model, including the water stop structure (figure is not marked) and reinforcement structure (figure is not marked) of residual slope accumulation body stratum 50 located above target tunnel, wherein, the water stop structure is curtain grouting structure, the curtain grouting structure extends to complete rock layer 60 located above target tunnel along vertical direction from ground surface, the curtain grouting structure is in the form of frame, to prevent water from outside curtain grouting structure into the inside of curtain grouting structure;

[0029] The reinforcement structure includes primary grouting structure (figure is not marked) and secondary grouting structure (figure is not marked), the primary grouting structure and the secondary grouting structure both extend to complete rock layer 60 located above target tunnel along vertical direction from ground surface, the primary grouting structure and the secondary grouting structure are located in the inside of the curtain grouting structure, and the primary grouting structure and the secondary grouting structure are used to reinforce residual slope accumulation body stratum 50 located in the inside of the curtain grouting structure.

[0030] Specifically, the curtain grouting structure extends to complete rock layer 60 located above target tunnel along vertical direction from ground surface, forms a frame form water stop barrier. The main function of curtain grouting structure is to prevent water from outside curtain from seeping into the inside of curtain, reduce the risk of water damage during tunnel construction and operation. The primary grouting structure also extends to complete rock layer 60 along vertical direction from ground surface, is located in the inside of the curtain grouting structure, and preliminarily reinforces residual slope accumulation body stratum 50 in the inside of the curtain grouting structure, improves the stability and bearing capacity of stratum. On the basis of primary grouting structure, secondary grouting structure further reinforces stratum, and primary grouting structure and secondary grouting structure jointly act on residual slope accumulation body stratum 50 in the inside of the curtain grouting structure, improve the stability and bearing capacity of stratum through grouting reinforcement, provide solid foundation for the construction and operation of tunnel. The present application comprehensively applies curtain grouting and grouting reinforcement technology, effectively improves the safety during tunnel construction and operation, reduces disasters such as gushing, collapse and other disasters caused by stratum instability and water damage.

[0031] As a preferred embodiment, the target tunnel includes a left tunnel line 110 and a right tunnel line 120. The curtain grouting structure includes an intermediate curtain grouting structure 210 located between the left tunnel line 110 and the right tunnel line 120, a first longitudinal curtain grouting structure 220 located outside the left tunnel line 110, a second longitudinal curtain grouting structure 230 located outside the right tunnel line 120, and two transverse curtain grouting structures 240 arranged at intervals along the extension direction of the target tunnel. The intermediate curtain grouting structure 210, the first longitudinal curtain grouting structure 220, the second longitudinal curtain grouting structure 230, and the transverse curtain grouting structure 240 form a Chinese character "Ri" structure on the plane.

[0032] Specifically, the curtain grouting structure includes an intermediate curtain grouting structure 210 (located between the left tunnel line 110 and the right tunnel line 120), a first longitudinal curtain grouting structure 220 (located outside the left tunnel line 110 and extending along the tunnel extension direction), a second longitudinal curtain grouting structure 230 (located outside the right tunnel line 120 and extending along the tunnel extension direction), and two transverse curtain grouting structures 240 arranged at intervals along the tunnel extension direction. As Fig. 1 shown, these structures together form a Chinese character "Ri" structure on the plane, effectively forming a three-dimensional grouting reinforcement framework structure. The curtain grouting structure can effectively block the infiltration of water from the external area into the internal area of the Chinese character "Ri" structure.

[0033] Furthermore, within the rectangular area enclosed by the curtain grouting structure, a plurality of transversely arranged primary grouting structures are constructed respectively along the left tunnel line 110 and the right tunnel line 120, further strengthening the formation. Based on the primary grouting structure, a plurality of secondary grouting structures staggered with the primary grouting structure are set up to form a denser grouting network, further improving the stability and bearing capacity of the formation.

[0034] As Fig. 1 shown, in this embodiment, an implementation method of three grouting structures is adopted, namely, the first Chinese character "Ri"-shaped curtain grouting structure, the second double-eye-shaped primary grouting structure, and the third double-Chinese character "Ri"-shaped secondary grouting structure. The reinforcement effect is excellent, which can significantly improve the self-stabilization time and bearing capacity of the surrounding rock, reduce the possibility of water inrush during tunnel excavation and operation and maintenance, effectively solve the stability problem of water-rich residual slope deposits within a certain range on the ground surface, and ensure the stability of the poor geological layer during tunnel excavation.

[0035] As a preferred embodiment, the first longitudinal curtain grouting structure 220 includes three first longitudinal curtain grouting rows arranged at equal intervals transversely along the left tunnel line. Each first longitudinal curtain grouting row includes a plurality of first curtain grouting units arranged at equal intervals longitudinally along the left tunnel line. The first curtain grouting units between adjacent two first longitudinal curtain grouting rows are arranged in a plum blossom pattern.

[0036] As a preferred embodiment, the second longitudinal curtain grouting structure 230 comprises three second longitudinal curtain grouting rows arranged uniformly in the transverse direction of the right line tunnel, each of the second longitudinal curtain grouting rows comprises a plurality of second curtain grouting units arranged uniformly in the longitudinal direction of the right line tunnel, and the second curtain grouting units of adjacent two second longitudinal curtain grouting rows are arranged in a quincunx pattern.

[0037] Preferably, the primary grouting structure comprises a plurality of left line primary grouting unit rows 310 arranged uniformly in the transverse direction of the left line tunnel and a plurality of right line primary grouting unit rows 320 arranged uniformly in the transverse direction of the right line tunnel, each of the left line primary grouting unit rows 310 comprises a plurality of left line primary grouting units arranged uniformly in the longitudinal direction of the left line tunnel, the left line primary grouting units of adjacent two left line primary grouting unit rows 310 are arranged in a quincunx pattern, and each of the right line primary grouting unit rows 320 comprises a plurality of right line primary grouting units arranged uniformly in the longitudinal direction of the right line tunnel, the right line primary grouting units of adjacent two right line primary grouting unit rows 320 are arranged in a quincunx pattern.

[0038] Preferably, the secondary grouting structure comprises a plurality of left line secondary grouting unit rows 410 arranged uniformly in the transverse direction of the left line tunnel and a plurality of right line secondary grouting unit rows 420 arranged uniformly in the transverse direction of the right line tunnel, each of the left line secondary grouting unit rows 410 comprises a plurality of left line secondary grouting units arranged uniformly in the longitudinal direction of the left line tunnel, the left line secondary grouting units of adjacent two left line secondary grouting unit rows 410 are arranged in a quincunx pattern, and each of the right line secondary grouting unit rows 420 comprises a plurality of right line secondary grouting units arranged uniformly in the longitudinal direction of the right line tunnel, the right line secondary grouting units of adjacent two right line secondary grouting unit rows 420 are arranged in a quincunx pattern.

[0039] Further, the curtain grouting structure can be grouted through the first grouting hole 250, the primary grouting structure can be grouted through the second grouting hole 330, and the secondary grouting structure can be grouted through the third grouting hole 430. As a preferred example, the opening diameters of the first grouting hole 250, the second grouting hole 330 and the third grouting hole 430 are 91 mm, arranged in a quincunx pattern, and the spacing is 1.2x1.2 m; the drilling is performed by using a Φ76 mmx6 mm casing wall protection until entering the vertical direction reinforcement area. The grouting pipe is a Φ76 mmx6 mm grouting steel pipe 270, connected by a screw thread, and the grouting holes are uniformly numbered. The water-cement ratio of the cement neat paste is 1:2, and 2% water glass is added to the grout in the curtain hole.

[0040] The grouting method adopts sectional backward grouting, and after one-time hole forming, sectional grouting from bottom to top is performed in determined grouting sections, with 5m as a section, when the grouting of the lower section is initial setting, the grouting pipe is lifted to the upper grouting section, and then grouting is performed, and the process is repeated until the design depth.

[0041] Preferably, the reinforcement depth is less than 5.0m for the area above the tunnel vault of the complete rock stratum 60, and 5.0m above the roof of the complete rock stratum 60 is the grouting pre-reinforcement area 260, and the strike of the grouting pre-reinforcement area 260 should be consistent with the rock stratum distribution line. When there is a filling cave in the vault, the grouting depth should extend 1m below the cave floor.

[0042] Further, the left line secondary grouting unit rows 410 and the left line primary grouting unit rows 310 are staggered in the transverse direction of the left line tunnel, and the right line secondary grouting unit rows 420 and the right line primary grouting unit rows 320 are staggered in the transverse direction of the right line tunnel.

[0043] As a preferred example, the spacing between the first curtain grouting units of two adjacent first longitudinal curtain grouting rows arranged in a quincunx pattern is set to 1.2x1.2m, and the spacing between the second curtain grouting units of two adjacent second longitudinal curtain grouting rows arranged in a quincunx pattern is set to 1.2x1.2m.

[0044] As a preferred example, the spacing between the left line primary grouting units of two adjacent left line primary grouting unit rows 310 arranged in a quincunx pattern is set to 1.2x1.2m, and the spacing between the right line primary grouting units of two adjacent right line primary grouting unit rows 320 arranged in a quincunx pattern is set to 1.2x1.2m.

[0045] As a preferred example, the spacing between the left line secondary grouting units of two adjacent left line secondary grouting unit rows 410 arranged in a quincunx pattern is set to 1.2x1.2m, and the spacing between the right line secondary grouting units of two adjacent right line secondary grouting unit rows 420 arranged in a quincunx pattern is set to 1.2x1.2m.

[0046] The above is only a preferred embodiment of the present application, and does not limit the protection scope of the present application, and any equivalent structure or equivalent process conversion using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A water-stopping reinforcing structure for a section of a tunnel water-rich residual collapse deposit accumulation body, characterized by, The water stopping structure and the reinforcing structure are arranged in the residual deposit accumulation body stratum above the target tunnel, The water stopping structure is a curtain grouting structure, which extends vertically from the ground to the intact rock layer above the target tunnel, and is in a frame form to prevent water outside the curtain grouting structure from entering the inside of the curtain grouting structure. The reinforcing structure includes a primary grouting structure and a secondary grouting structure, both of which extend vertically from the ground to the intact rock layer above the target tunnel, and are arranged inside the curtain grouting structure, and are used to reinforce the residual deposit accumulation body stratum inside the curtain grouting structure.

2. The water-stopping reinforcing structure of a tunnel water-rich cataclastic deposit section according to claim 1, characterized in that, The target tunnel includes a left tunnel and a right tunnel, the curtain grouting structure includes an intermediate curtain grouting structure between the left tunnel and the right tunnel, a first longitudinal curtain grouting structure outside the left tunnel, a second longitudinal curtain grouting structure outside the right tunnel, and two transverse curtain grouting structures arranged at intervals along the extension direction of the target tunnel, and the intermediate curtain grouting structure, the first longitudinal curtain grouting structure, the second longitudinal curtain grouting structure and the transverse curtain grouting structures form a day-shaped structure in the plane.

3. The water-stopping reinforcing structure of a tunnel water-rich cataclastic deposit section according to claim 2, characterized in that, The first longitudinal curtain grouting structure includes three first longitudinal curtain grouting rows arranged uniformly at intervals in the transverse direction of the left tunnel, each of the first longitudinal curtain grouting rows includes a plurality of first curtain grouting units arranged uniformly in the longitudinal direction of the left tunnel, and the first curtain grouting units of adjacent two first longitudinal curtain grouting rows are arranged in a quincunx pattern.

4. The water-stopping reinforcing structure of a tunnel water-rich cataclastic deposit section according to claim 3, characterized in that, The second longitudinal curtain grouting structure includes three second longitudinal curtain grouting rows arranged uniformly at intervals in the transverse direction of the right tunnel, each of the second longitudinal curtain grouting rows includes a plurality of second curtain grouting units arranged uniformly in the longitudinal direction of the right tunnel, and the second curtain grouting units of adjacent two second longitudinal curtain grouting rows are arranged in a quincunx pattern.

5. The water-stopping reinforcing structure of a tunnel water-rich cataclastic deposit section according to claim 2, characterized in that, The primary grouting structure includes a plurality of left tunnel primary grouting unit rows arranged at intervals in the transverse direction of the left tunnel and a plurality of right tunnel primary grouting unit rows arranged at intervals in the transverse direction of the right tunnel, each of the left tunnel primary grouting unit rows includes a plurality of left tunnel primary grouting units arranged at intervals in the longitudinal direction of the left tunnel, and the left tunnel primary grouting units of adjacent two left tunnel primary grouting unit rows are arranged in a quincunx pattern, and each of the right tunnel primary grouting unit rows includes a plurality of right tunnel primary grouting units arranged at intervals in the longitudinal direction of the right tunnel, and the right tunnel primary grouting units of adjacent two right tunnel primary grouting unit rows are arranged in a quincunx pattern.

6. The water-stopping reinforcing structure of a tunnel water-rich cataclastic deposit section according to claim 5, characterized in that, The secondary grouting structure comprises a plurality of left-line secondary grouting unit rows arranged transversely along the left-line tunnel and a plurality of right-line secondary grouting unit rows arranged transversely along the right-line tunnel, wherein each left-line secondary grouting unit row comprises a plurality of left-line secondary grouting units arranged longitudinally along the left-line tunnel, and the left-line secondary grouting units of two adjacent left-line secondary grouting unit rows are arranged in a quincunx pattern; and each right-line secondary grouting unit row comprises a plurality of right-line secondary grouting units arranged longitudinally along the right-line tunnel, and the right-line secondary grouting units of two adjacent right-line secondary grouting unit rows are arranged in a quincunx pattern.

7. The waterstop reinforcement structure for a tunnel water-rich cataclastic deposit section according to claim 6, characterized in that, The left-line secondary grouting unit rows and the left-line primary grouting unit rows are staggered in the transverse direction of the left-line tunnel, and the right-line secondary grouting unit rows and the right-line primary grouting unit rows are staggered in the transverse direction of the right-line tunnel.

8. The water-stopping reinforcing structure of a tunnel water-rich cataclastic deposit section according to claim 4, characterized in that, The interval between the first curtain grouting units of two adjacent first longitudinal curtain grouting rows arranged in a quincunx pattern is 1.2*1.2 m, and the interval between the second curtain grouting units of two adjacent second longitudinal curtain grouting rows arranged in a quincunx pattern is 1.2*1.2 m.

9. The water-stopping reinforcing structure of a tunnel water-rich cataclastic deposit section according to claim 5, characterized in that, The interval between the left-line primary grouting units of two adjacent left-line primary grouting unit rows arranged in a quincunx pattern is 1.2*1.2 m, and the interval between the right-line primary grouting units of two adjacent right-line primary grouting unit rows arranged in a quincunx pattern is 1.2*1.2 m.

10. The waterstop reinforcement structure for a tunnel water-rich cataclastic deposit section according to claim 6, characterized in that, The interval between the left-line secondary grouting units of two adjacent left-line secondary grouting unit rows arranged in a quincunx pattern is 1.2*1.2 m, and the interval between the right-line secondary grouting units of two adjacent right-line secondary grouting unit rows arranged in a quincunx pattern is 1.2*1.2 m.

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