Construction method of connecting channel, connecting channel and double-hole tunnel
By dividing the twin-hole tunnel into reinforced sections, setting up reinforcement structures, and injecting reinforcement slurry, the problem of ground instability during the construction of the connecting channel was solved, the ground bearing capacity and construction safety were improved, and collapse accidents were avoided.
Patent Information
- Application Number
- CN202510739033.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2025-09-23
AI Technical Summary
During the construction of the connecting channel of the twin-hole tunnel, the ground is prone to instability, resulting in lower safety and the risk of collapse accidents.
The tunnel stratum is divided into multiple reinforcement sections, and different reinforcement structures are set in each reinforcement section. They are connected through communication rings to form a communication channel, and reinforcement slurry is injected into the stratum to enhance the bearing capacity and water-stopping effect of the stratum.
It improves the bearing capacity and self-stability of the stratum, avoids the occurrence of stratum instability and collapse accidents, improves construction safety, and improves the mechanical properties of weak strata.
Smart Images
Figure CN120684216A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of tunnel construction, and in particular to a construction method of a communication channel, a communication channel and a double-hole tunnel. Background Art
[0002] A twin-tunnel typically consists of two parallel, independent tunnels, each serving its own purpose. To ensure the safety of personnel within these tunnels and enhance the tunnel's overall emergency response capabilities, a connecting passage between the two tunnels is often required during engineering design. If one tunnel experiences an emergency, such as a fire, traffic accident, or other emergency, personnel can quickly evacuate to the safer alternative tunnel via the connecting passage.
[0003] During the construction of the connecting passage of a twin-tunnel, the connection between the connecting passage and the two main tunnels often exhibits a relatively weak state due to the complex geological structure and the impact of construction disturbances. These weak areas are like hidden dangers, which can easily cause ground instability during excavation and support operations. Once ground instability occurs, it will directly lead to a sharp drop in the bearing capacity of the formation, which may trigger serious collapse accidents and reduce safety. Summary of the Invention
[0004] The main purpose of the present invention is to propose a construction method for a connecting channel, a connecting channel and a double-hole tunnel, aiming to solve the technical problems of easy stratum instability and low safety during the construction of the connecting channel of the double-hole tunnel.
[0005] To achieve the above-mentioned object, the present invention proposes a construction method for a communication channel, wherein the communication channel is used to connect two tunnels spaced apart. The construction method comprises:
[0006] Dividing the stratum where the two tunnels are located into a plurality of reinforcement sections arranged sequentially from top to bottom;
[0007] Applying a plurality of different reinforcement structures in a one-to-one correspondence to the plurality of reinforcement sections;
[0008] A plurality of communication rings are buried in the stratum between the two tunnels, and the plurality of communication rings are sequentially connected from one tunnel to the other tunnel to form the communication channel;
[0009] Injecting reinforcement slurry into the stratum where the connecting channel is located. In one embodiment, the step of applying multiple different reinforcement structures in a one-to-one correspondence between the multiple reinforcement sections includes:
[0010] The plurality of reinforcement sections arranged sequentially from top to bottom are sequentially constructed in a one-to-one correspondence with a plurality of reinforcement structures with gradually increasing structural strength.
[0011] In one embodiment, the step of sequentially and one-to-one constructing a plurality of reinforcement structures with gradually increasing structural strength on the plurality of reinforcement sections from top to bottom includes:
[0012] Excavating triaxial mixing pile holes from top to bottom in the stratum where the two tunnels are located; wherein the triaxial mixing pile holes penetrate the plurality of reinforcement sections from top to bottom;
[0013] Concrete with gradually increasing cement content is poured into the triaxial mixing pile hole at positions corresponding to the multiple reinforcement sections arranged sequentially from top to bottom, so as to form multiple reinforcement structures with gradually increasing structural strength from top to bottom.
[0014] In one embodiment, the step of dividing the stratum where the two tunnels are located into a plurality of reinforcement sections arranged sequentially from top to bottom:
[0015] The stratum where the two tunnels are located is divided into two reinforcement sections arranged in sequence from top to bottom, wherein the two reinforcement sections are respectively a weak reinforcement section and a strong reinforcement section from top to bottom;
[0016] pouring concrete with a cement content of 20% into the position corresponding to the strong reinforcement section in the triaxial mixing pile hole to form a strong reinforcement structure;
[0017] Concrete with a cement content of 8% is poured into the position of the triaxial mixing pile hole corresponding to the weak reinforcement section to form a weak reinforcement structure.
[0018] In one embodiment, after the step of injecting the reinforcement slurry into the stratum where the communication channel is located, the method further comprises:
[0019] Observe the leakage of the communication channel;
[0020] If leakage occurs in the communication channel, the reinforcing slurry is continuously injected into the stratum where the communication channel is located.
[0021] In one embodiment, the step of injecting reinforcement slurry into the stratum where the communication channel is located includes:
[0022] Reinforcement slurry is injected into the stratum where the connecting channel is located, close to the two tunnels.
[0023] In one embodiment, the reinforcement slurry is a concrete slurry.
[0024] In one embodiment, after the step of applying a plurality of different reinforcement structures to the plurality of reinforcement segments in a one-to-one correspondence, the method further includes:
[0025] Drilling core samples from each of the reinforcement structures;
[0026] Monitor samples obtained from core sampling.
[0027] The present invention also provides a communication channel, which is constructed using the above-mentioned construction method for the communication channel.
[0028] The present invention also proposes a double-hole tunnel, which includes the above-mentioned connecting channel and two tunnels arranged at intervals, and the connecting channel is used to connect the two tunnels.
[0029] The technical solution of the present invention is to set multiple reinforcement sections from top to bottom in the stratum where the two tunnels are located, and set a different reinforcement structure corresponding to each reinforcement section. The two tunnels can be reinforced from top to bottom through multiple reinforcement structures, and different reinforcement structures are set at different depths, which can adapt to different stratum environments, thereby better reinforcing the stratum where the two tunnels are located, effectively improving the bearing capacity of the stratum, thereby avoiding the occurrence of collapse accidents, and having high safety. And a communication channel can be assembled through multiple communication rings, which is simple and convenient. Then, injecting reinforcement slurry into the stratum where the communication channel is located can fill the gaps in the stratum to reinforce the stratum where the communication channel is located, and can play a water-stopping role on the stratum, thereby further improving the bearing capacity of the stratum, thereby further avoiding the occurrence of collapse accidents, and having higher safety. After the twin-hole tunnel and the connecting tunnel are reinforced, the mechanical properties of the weak strata (for example, silt soil layers) are improved, and the bearing capacity of the foundation at the bottom of the twin-hole tunnel can be increased, so as to provide a reliable reverse thrust for the subsequent mechanical construction of the connecting tunnel of the twin-hole tunnel; at the same time, the reinforcement of the starting and receiving openings of the mechanical connecting channel improves the self-stability of the stratum, further avoiding the occurrence of stratum instability during the starting and receiving processes of the mechanical construction of the connecting channel, which may lead to water inrush, mud gushing, and collapse accidents; thus, the safety of the construction of the twin-hole tunnel and the connecting channel is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0031] Figure 1 A schematic flow chart of an embodiment of a construction method for a communication channel provided by the present invention;
[0032] Figure 2 This is a schematic structural diagram of the tunnel and the communication channel in one embodiment of the construction method of the communication channel provided by the present invention.
[0033] Description of Figure Numbers:
[0034] 10. Tunnel; 20. Communication channel; 30. Reinforcement section; 31. Weakly reinforced section; 32. Strongly reinforced section.
[0035] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION
[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.
[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0039] The present invention provides a construction method of a communication channel, a communication channel and a double-hole tunnel.
[0040] See also Figures 1 to 2 In one embodiment of the present invention, the construction method of the communication channel includes:
[0041] Step S100, dividing the stratum where the two tunnels are located into a plurality of reinforcement sections arranged sequentially from top to bottom;
[0042] Step S200, applying a plurality of different reinforcement structures to the plurality of reinforcement sections in a one-to-one correspondence;
[0043] Step S300: burying a plurality of communication rings in the stratum between the two tunnels, wherein the plurality of communication rings are sequentially connected from one tunnel to the other tunnel to form the communication channel;
[0044] Step S400: injecting reinforcement slurry into the stratum where the communication channel is located.
[0045] The technical solution of the present invention is to set multiple reinforcement sections from top to bottom in the stratum where the two tunnels 10 are located, and set a different reinforcement structure corresponding to each reinforcement section. The two tunnels 10 can be reinforced from top to bottom through multiple reinforcement structures, and different reinforcement structures are set at different depths, which can adapt to different stratum environments, thereby better reinforcing the stratum where the two tunnels 10 are located, effectively improving the bearing capacity of the stratum, thereby avoiding the occurrence of collapse accidents, and having high safety. And a plurality of connecting rings can be assembled to form a connecting channel 20, which is simple and convenient, and has higher assembly efficiency. Then, injecting reinforcement slurry into the stratum where the connecting channel 20 is located can fill the gaps in the stratum to reinforce the stratum where the connecting channel 20 is located, and can play a water-stopping role on the stratum, thereby further improving the bearing capacity of the stratum, thereby further avoiding the occurrence of stratum instability and collapse accidents during the construction of the connecting channel 20, and having higher safety. After the double-hole tunnel and the connecting tunnel are reinforced, the mechanical properties of the weak strata (for example, silt soil layers) are improved, and the bearing capacity of the foundation at the bottom of the double-hole tunnel can be increased, so as to provide a reliable reverse thrust for the subsequent mechanical construction of the connecting tunnel of the double-hole tunnel; at the same time, the reinforcement of the starting and receiving openings of the mechanical connecting channel 20 improves the self-stability of the strata, further avoiding the occurrence of stratum instability and water inrush, mud gushing, and collapse accidents during the starting and receiving processes of the mechanical construction of the connecting channel 20; and improving the safety of the construction of the double-hole tunnel and the connecting channel 20.
[0046] In one embodiment of the present invention, step S200 includes:
[0047] Step S210 , sequentially constructing a plurality of reinforcement structures with gradually increasing structural strength on the plurality of reinforcement sections sequentially arranged from top to bottom in a one-to-one correspondence.
[0048] Specifically, the structural strength of the multiple reinforcement structures corresponding to the multiple reinforcement sections 30 gradually increases from top to bottom, which can better adapt to the stress in the stratum that gradually increases with the increasing depth of the stratum, thereby better reinforcing the stratum where the connecting channel 20 is located.
[0049] In one embodiment of the present invention, step S210 includes:
[0050] Step S211, excavating a triaxial mixing pile hole from top to bottom in the stratum where the two tunnels are located; wherein the triaxial mixing pile hole passes through the plurality of reinforcement sections from top to bottom;
[0051] Step S212, concrete with gradually increasing cement content is poured into the position of the multiple reinforcement sections arranged sequentially from top to bottom in the three-axis mixing pile hole, so as to form multiple reinforcement structures with gradually increasing structural strength from top to bottom.
[0052] Specifically, by excavating a three-axis mixing pile hole downward in the stratum and pouring concrete into the three-axis mixing pile hole, a three-axis mixing pile can be formed. Using the three-axis mixing pile to reinforce the stratum causes less disturbance to the stratum, and the stratum can be reinforced on the basis of reducing the disturbance to the stratum, thereby further reducing the risk of stratum instability. In addition, by pouring concrete with different cement content into the reinforcement sections corresponding to different depths of the stratum, a reinforced structure with different structural strengths can be formed, wherein the higher the cement content, the higher the structural strength of the reinforced structure. By pouring concrete with a higher cement content into the deeper position of the three-axis mixing pile hole, a reinforced structure with higher structural strength can be formed in the reinforcement section corresponding to the deeper position to accommodate the greater stress in the deeper stratum, thereby achieving a better reinforcement effect on the stratum. By pouring concrete with a lower cement content into the shallower position of the three-axis mixing pile hole, a reinforced structure with lower structural strength can be formed in the reinforcement section corresponding to the shallower position to accommodate the smaller stress in the shallower stratum, thereby achieving economic savings.
[0053] In one embodiment of the present invention, step S100 includes:
[0054] Step S110, dividing the stratum where the two tunnels are located into two reinforcement sections arranged in sequence from top to bottom, wherein the two reinforcement sections are respectively a weak reinforcement section and a strong reinforcement section from top to bottom;
[0055] Step S212 includes:
[0056] Step S2121: pouring concrete with a cement content of 20% into the position corresponding to the strong reinforcement section in the hole of the triaxial mixing pile to form a strong reinforcement structure;
[0057] Step S2122: pouring concrete with a cement content of 8% into the position corresponding to the weak reinforcement section in the triaxial mixing pile hole to form a weak reinforcement structure.
[0058] Specifically, a weak reinforcement section 31 and a strong reinforcement section 32 are respectively arranged from top to bottom. First, concrete with a cement content of 20% is poured into the three-axis mixing pile hole to the junction of the strong reinforcement section 32 and the weak reinforcement section 31, so that a strong reinforcement structure with higher structural strength can be formed in the strong reinforcement section 32. Then, concrete with a cement content of 8% is continued to be poured into the three-axis mixing pile, so that a weak reinforcement structure with lower structural strength can be formed in the weak reinforcement section 31.
[0059] In one embodiment of the present invention, after step S400, the method further includes:
[0060] Step S500, observing the leakage of the communication channel;
[0061] Step S600: If leakage occurs in the communication channel, the reinforcement slurry is continuously injected into the stratum where the communication channel is located.
[0062] Specifically, the reinforcement slurry's effectiveness in reinforcing and stopping the water in the ground can be determined by observing leakage in the connecting channel. If leakage occurs, the desired effect on the ground in which the connecting channel is located has not been achieved, and further reinforcement slurry must be poured into the ground in which the connecting channel is located to further reinforce the ground.
[0063] In one embodiment of the present invention, step S400 includes:
[0064] Step S410: injecting reinforcement slurry into the stratum where the connecting channel is located, close to the two tunnels.
[0065] Specifically, by injecting reinforcement slurry into the connecting channel 20 near the two tunnels 10, the weak positions can be reinforced, thereby more effectively preventing stratum instability and being more economical.
[0066] In one embodiment of the present invention, the reinforcement slurry is concrete slurry.
[0067] In one embodiment of the present invention, after step S200, the method further includes:
[0068] Step A300, taking core samples from each of the reinforcement structures;
[0069] Step A400: monitoring the samples obtained by core sampling.
[0070] Specifically, after the reinforcement structure is completed, core sampling is performed on the reinforcement structure, and the samples obtained are tested to determine whether the structural strength of the reinforcement structure meets the standards, thereby further avoiding instability of the formation.
[0071] The present invention also proposes a communication channel, which is constructed using the above-mentioned communication channel construction method. The specific method of the construction method of the communication channel refers to the above-mentioned embodiment. Since this communication channel adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.
[0072] The present invention also proposes a double-hole tunnel, which includes the above-mentioned connecting channel and two tunnels arranged at intervals. The specific structure of the connecting channel refers to the above-mentioned embodiment. Since this double-hole tunnel adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.
[0073] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.
Claims
1. A construction method for a communication channel, characterized in that: The communication channel is used to connect two tunnels spaced apart, and the construction method includes: Dividing the stratum where the two tunnels are located into a plurality of reinforcement sections arranged sequentially from top to bottom; Applying a plurality of different reinforcement structures in a one-to-one correspondence to the plurality of reinforcement sections; A plurality of communication rings are buried in the stratum between the two tunnels, and the plurality of communication rings are sequentially connected from one tunnel to the other tunnel to form the communication channel; Inject reinforcement slurry into the stratum where the communication channel is located.
2. The construction method of the communication channel according to claim 1, characterized in that: The step of applying a plurality of different reinforcement structures in a one-to-one correspondence on the plurality of reinforcement sections comprises: The plurality of reinforcement sections arranged sequentially from top to bottom are sequentially constructed in a one-to-one correspondence with a plurality of reinforcement structures with gradually increasing structural strength.
3. The construction method of the communication channel according to claim 2, characterized in that: The step of constructing a plurality of reinforcement structures with gradually increasing structural strength in the plurality of reinforcement sections one by one from top to bottom includes: Excavating triaxial mixing pile holes from top to bottom in the stratum where the two tunnels are located; wherein the triaxial mixing pile holes penetrate the plurality of reinforcement sections from top to bottom; Concrete with gradually increasing cement content is poured into the triaxial mixing pile hole at positions corresponding to the multiple reinforcement sections arranged sequentially from top to bottom, so as to form multiple reinforcement structures with gradually increasing structural strength from top to bottom.
4. The construction method of the communication channel according to claim 3, characterized in that: The step of dividing the stratum where the two tunnels are located into a plurality of reinforcement sections arranged in sequence from top to bottom comprises: The stratum where the two tunnels are located is divided into two reinforcement sections arranged in sequence from top to bottom, wherein the two reinforcement sections are respectively a weak reinforcement section and a strong reinforcement section from top to bottom; The steps of successively pouring concrete with gradually increasing cement content into the positions of the plurality of reinforcement sections sequentially arranged from top to bottom in the hole of the triaxial mixing pile to form the plurality of reinforcement structures with gradually increasing structural strength from top to bottom include: pouring concrete with a cement content of 20% into the position corresponding to the strong reinforcement section in the triaxial mixing pile hole to form a strong reinforcement structure; Concrete with a cement content of 8% is poured into the position of the triaxial mixing pile hole corresponding to the weak reinforcement section to form a weak reinforcement structure.
5. The construction method of the communication channel according to claim 1, characterized in that: After the step of injecting the reinforcement slurry into the stratum where the communication channel is located, the method further comprises: Observe the leakage of the communication channel; If leakage occurs in the communication channel, the reinforcing slurry is continuously injected into the stratum where the communication channel is located.
6. The construction method of a communication channel according to any one of claims 1 to 5, characterized in that: The step of injecting reinforcement slurry into the stratum where the communication channel is located comprises: Reinforcement slurry is injected into the stratum where the connecting channel is located, close to the two tunnels.
7. The construction method of a communication channel according to any one of claims 1 to 5, characterized in that: The reinforcement slurry is concrete slurry.
8. The construction method of a communication channel according to any one of claims 1 to 5, characterized in that: After the step of applying a plurality of different reinforcement structures to the plurality of reinforcement segments in a one-to-one correspondence, the method further includes: Drilling core samples from each of the reinforcement structures; Monitor samples obtained from core sampling.
9. A communication channel, characterized in that: The communication channel is constructed using the construction method for a communication channel according to any one of claims 1 to 8.
10. A double-hole tunnel, characterized in that: The double-hole tunnel includes the connecting channel as claimed in claim 9 and two tunnels arranged at intervals, and the connecting channel is used to connect the two tunnels.