CN113251966A - Deep-buried tunnel safety monitoring arrangement method and device - Google Patents
Deep-buried tunnel safety monitoring arrangement method and device Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
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Abstract
The embodiment of the invention provides a method and a device for safety monitoring and arrangement of a deep-buried tunnel, and belongs to the technical field of geological monitoring. The safety monitoring and arranging method for the deep-buried tunnel comprises the following steps: determining potential damage surfaces of tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method; and generating a safety monitoring arrangement aiming at the potential damage surfaces of the tunnel surrounding rocks with different burial depths. The method and the device for monitoring and arranging the safety of the deeply buried tunnel can be used for monitoring the safety of the tunnel more pertinently and optimally.
Description
Technical Field
The invention relates to the technical field of geological monitoring, in particular to a method and a device for safety monitoring and arrangement of a deep-buried tunnel.
Background
Under the condition of high ground stress, if the rock quality is soft and has structures such as joints, faults, broken zones and the like, the excavation can cause disasters such as strong extrusion deformation, collapse and the like. The surrounding rock stress distribution and deformation condition of the high ground stress soft rock tunnel bring a great deal of problems to the tunnel construction design, and the high ground stress soft rock tunnel often can not accurately master the size and distribution of ground stress in the design stage, so that the deformation degree is monitored at any time when the tunnel is excavated, guidance and help are provided for the design and construction of subsequent tunnels, and the method has important practical significance. The current tunnel monitoring mode is not perfect.
Disclosure of Invention
The embodiment of the invention aims to provide a method and a device for monitoring and arranging the safety of a deep-buried tunnel, which can monitor the safety of the tunnel more pertinently and optimally.
In order to achieve the above object, an embodiment of the present invention provides a method for monitoring and arranging safety of a deep-buried tunnel, where the method includes: determining potential damage surfaces of tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method; and generating a safety monitoring arrangement aiming at the potential damage surfaces of the tunnel surrounding rocks with different burial depths.
Preferably, the determining the potential damage surfaces of the tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method comprises the following steps: establishing a finite element model of a typical tunnel; performing surrounding rock strength numerical simulation on the completely excavated tunnel based on the finite element model of the typical tunnel, and determining strength reserve; continuously reducing the strength of the rock mass material based on the reduction coefficient by taking the strength reserve as a safety coefficient, so that the finite element model is not converged until the tunnel is damaged; and aiming at different burial depths, comparing the plastic region distribution of the tunnel surrounding rock under different reduction coefficients, and finding out the potential damage surfaces of the tunnel surrounding rock with different burial depths.
Preferably, the potential damage surface is a surrounding rock surface of a tunnel surrounding rock with distribution of plastic zones and through paths at the periphery.
Preferably, when the surrounding rock is class iii surrounding rock, the performing safety monitoring arrangement for the potential damage surface of the tunnel surrounding rock with different burial depths comprises: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at intervals smaller than or equal to a first preset interval, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; distributing a plurality of reinforcing steel bar meters and selecting a plurality of anchor rods at each surrounding rock surface convergence monitoring point, and distributing 1 anchor rod stress meter for each anchor rod to monitor the stress of the anchor rod; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
Preferably, when the surrounding rock is a type V surrounding rock with a fracture zone, the performing safety monitoring arrangement for the potential damage surfaces of the tunnel surrounding rocks with different burial depths includes: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at second preset intervals, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to match; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; for multiple surrounding rock surface convergence monitoring points, distributing multiple strain gauges at every 1 position; 1 set of wide-range multi-point displacement meters are buried in a hole near a joint surface of a fracture zone and stable rock strata on two sides in a tunnel so as to monitor the fault deformation of the fracture zone; respectively embedding a plurality of sets of dislocation meters in the seams of the tunnel lining structure so as to monitor the dislocation deformation of the lining structure; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
The embodiment of the invention also provides a device for monitoring and arranging the safety of the deep-buried tunnel, which comprises: the device comprises a processing unit and a generating unit, wherein the processing unit is used for determining potential damage surfaces of tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method; the generating unit is used for generating safety monitoring arrangement aiming at potential damage surfaces of tunnel surrounding rocks with different burial depths.
Preferably, the determining the potential damage surfaces of the tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method comprises the following steps: establishing a finite element model of a typical tunnel; performing surrounding rock strength numerical simulation on the completely excavated tunnel based on the finite element model of the typical tunnel, and determining strength reserve; continuously reducing the strength of the rock mass material based on the reduction coefficient by taking the strength reserve as a safety coefficient, so that the finite element model is not converged until the tunnel is damaged; and aiming at different burial depths, comparing the plastic region distribution of the tunnel surrounding rock under different reduction coefficients, and finding out the potential damage surfaces of the tunnel surrounding rock with different burial depths.
Preferably, the potential damage surface is a surrounding rock surface of a tunnel surrounding rock with distribution of plastic zones and through paths at the periphery.
Preferably, when the surrounding rock is class iii surrounding rock, the performing safety monitoring arrangement for the potential damage surface of the tunnel surrounding rock with different burial depths comprises: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at intervals smaller than or equal to a first preset interval, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; distributing a plurality of reinforcing steel bar meters and selecting a plurality of anchor rods at each surrounding rock surface convergence monitoring point, and distributing 1 anchor rod stress meter for each anchor rod to monitor the stress of the anchor rod; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
Preferably, when the surrounding rock is a type V surrounding rock with a fracture zone, the performing safety monitoring arrangement for the potential damage surfaces of the tunnel surrounding rocks with different burial depths includes: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at second preset intervals, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to match; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; for multiple surrounding rock surface convergence monitoring points, distributing multiple strain gauges at every 1 position; 1 set of wide-range multi-point displacement meters are buried in a hole near a joint surface of a fracture zone and stable rock strata on two sides in a tunnel so as to monitor the fault deformation of the fracture zone; respectively embedding a plurality of sets of dislocation meters in the seams of the tunnel lining structure so as to monitor the dislocation deformation of the lining structure; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
By adopting the technical scheme, the method and the device for monitoring and arranging the safety of the deep-buried tunnel effectively combine the advantages of the FLAC3D in the aspect of finite element strength reduction mathematical model, carry out system analysis on the stress and displacement of a typical tunnel section to obtain a potential failure surface, and provide a basis for the optimal arrangement of an engineering safety monitoring system.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a flowchart of a method for monitoring and arranging safety of a deep tunnel according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for monitoring and arranging safety of a deep tunnel according to another embodiment of the present invention;
FIG. 3 is an illustration of an exemplary layout of a monitoring facility provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a class III wall rock detection arrangement according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a detection arrangement for a class V wall rock according to an embodiment of the present invention;
fig. 6 is a block diagram of a safety monitoring arrangement device for a deep tunnel according to an embodiment of the present invention.
Description of the reference numerals
1 processing unit 2 generating unit
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a flowchart of a method for monitoring and arranging safety of a deep tunnel according to an embodiment of the present invention. As shown in fig. 1, the method includes:
step S11, determining potential damage surfaces of tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method;
for example, as shown in fig. 2, the determining the potential failure surface of the tunnel surrounding rock with different burial depths by using the finite element strength reduction method includes:
step S21, establishing a finite element model of a typical tunnel;
for example, establishing a finite element model is well within the skill of the art and will not be described further herein.
Step S22, performing surrounding rock strength numerical simulation on the completely excavated tunnel based on the finite element model of the typical tunnel, and determining strength reserve;
for example, different tunnel shapes may produce different stress distributions. And substituting the shape parameters of the tunnel into the finite element model according to the shape of the tunnel after excavation is finished, and analyzing the stress and strain of the surrounding rock of the tunnel to obtain the strength reserve. The strength reserve refers to the minimum rock mass material strength when the tunnel is damaged in the theoretical calculation process.
Step S23, continuously reducing the strength of rock mass materials based on the reduction coefficient by taking the strength reserve as a safety coefficient, so that the finite element model is not converged until the tunnel is damaged;
for example, in the calculation, the occurrence of a plastic region represents that surrounding rocks in the range can be a potential damage surface. Due to the constraint of the periphery of the surrounding rock, the surrounding rock in the plastic zone is not necessarily unstable, and the surrounding rock is only destroyed when the plastic zone is communicated. In different reduction conditions, the distribution and the through path of the plastic zone at the periphery of the surrounding rock are potential damage surfaces. Therefore, the reduction factors can be respectively set to 0.5, 1.0, 1.25 and 1.41 so as to reduce the strength of the rock mass material until the tunnel is damaged.
And step S24, comparing the plastic zone distribution of the tunnel surrounding rock under different reduction coefficients aiming at different burial depths, and finding out the potential damage surfaces of the tunnel surrounding rock with different burial depths.
For example, for a typical circular tunnel, displacement and stress of sections with different depths are calculated by using finite element software according to the designed burial depth range of the tunnel, so that plastic region distribution and displacement with different burial depths are obtained. The potential damage surfaces at different burial depths can be obtained according to the determination manner of the potential damage surfaces.
And step S12, generating safety monitoring arrangement aiming at potential damage surfaces of tunnel surrounding rocks with different burial depths.
For example, for a potentially damaging surface, the following monitoring arrangement is performed:
first, fig. 3 is an illustration of an exemplary layout of a monitoring facility according to an embodiment of the present invention. As shown in fig. 3, the monitoring of deformation inside the surrounding rock, the monitoring of dislocation deformation of the lining structure, the monitoring of convergence of the surface of the surrounding rock, the monitoring of pressure of the surrounding rock, the monitoring of seepage, the monitoring of dislocation deformation of the fracture zone, the monitoring of opening degree of the joint surface of the lining surrounding rock and the monitoring of stress of the anchor rod are respectively shown.
Fig. 4 is a schematic view of a detection arrangement of class iii surrounding rock according to an embodiment of the present invention. As shown in fig. 4, when the surrounding rock is a class iii surrounding rock, the performing safety monitoring arrangement on the potential damage surface of the tunnel surrounding rock with different burial depths includes: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at intervals less than or equal to a first preset interval (for example, 200m), arranging a plurality of convergence measuring points (for example, 5) at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; distributing a plurality of reinforcing steel bar meters (for example, 4) and selecting a plurality of anchor rods (for example, 3) at each surrounding rock surface convergence monitoring point, and distributing 1 anchor rod stress meter for each anchor rod to monitor the anchor rod stress; distributing a plurality of sets of multi-point displacement meters (for example, 3 sets) at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and (3) distributing a plurality of joint meters (for example, 3) at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of a joint surface of the tunnel and the surrounding rock.
Fig. 5 is a schematic diagram of a detection arrangement of a class V surrounding rock according to an embodiment of the present invention. As shown in fig. 5, when the surrounding rock is a type V surrounding rock with a fracture zone, the performing safety monitoring arrangement for the potential damage surface of the tunnel surrounding rock with different burial depths includes: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at a second preset interval (for example, 10-30 m), arranging a plurality of convergence measuring points (for example, 5) at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; for multiple surrounding rock surface convergence monitoring points, distributing multiple strain gauges (for example, 8 strain gauges) at intervals of 1; 1 set of wide-range multi-point displacement meters are buried in a hole near a joint surface of a fracture zone and stable rock strata on two sides in a tunnel so as to monitor the fault deformation of the fracture zone; respectively burying a plurality of sets of dislocation meters (for example, 2 sets) in each tunnel lining structure seam so as to monitor the dislocation deformation of the lining structure; a plurality of sets of multi-point displacement meters (for example, 3 sets) are distributed at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and (3) distributing a plurality of joint meters (for example, 3) at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of a joint surface of the tunnel and the surrounding rock.
After the method is adopted, the advantages of the FLAC3D in the aspect of finite element strength reduction method mathematical models are effectively combined, the system analysis is carried out on the stress and the displacement of the typical hole section, and a basis is provided for the optimal arrangement of an engineering safety monitoring system.
Fig. 6 is a block diagram of a safety monitoring arrangement device for a deep tunnel according to an embodiment of the present invention. As shown in fig. 6, the apparatus includes: the tunnel wall rock damage detection method comprises a processing unit 1 and a generating unit 2, wherein the processing unit 1 is used for determining potential damage surfaces of tunnel wall rocks with different burial depths by adopting a finite element strength reduction method; the generating unit 2 is used for generating a safety monitoring arrangement aiming at potential damage surfaces of tunnel surrounding rocks with different burial depths.
Preferably, the determining the potential damage surfaces of the tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method comprises the following steps: establishing a finite element model of a typical tunnel; performing surrounding rock strength numerical simulation on the completely excavated tunnel based on the finite element model of the typical tunnel, and determining strength reserve; continuously reducing the strength of the rock mass material based on the reduction coefficient by taking the strength reserve as a safety coefficient, so that the finite element model is not converged until the tunnel is damaged; and aiming at different burial depths, comparing the plastic region distribution of the tunnel surrounding rock under different reduction coefficients, and finding out the potential damage surfaces of the tunnel surrounding rock with different burial depths.
Preferably, the potential damage surface is a surrounding rock surface of a tunnel surrounding rock with distribution of plastic zones and through paths at the periphery.
Preferably, when the surrounding rock is class iii surrounding rock, the performing safety monitoring arrangement for the potential damage surface of the tunnel surrounding rock with different burial depths comprises: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at intervals smaller than or equal to a first preset interval, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; distributing a plurality of reinforcing steel bar meters and selecting a plurality of anchor rods at each surrounding rock surface convergence monitoring point, and distributing 1 anchor rod stress meter for each anchor rod to monitor the stress of the anchor rod; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
Preferably, when the surrounding rock is a type V surrounding rock with a fracture zone, the performing safety monitoring arrangement for the potential damage surfaces of the tunnel surrounding rocks with different burial depths includes: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at second preset intervals, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to match; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; for multiple surrounding rock surface convergence monitoring points, distributing multiple strain gauges at every 1 position; 1 set of wide-range multi-point displacement meters are buried in a hole near a joint surface of a fracture zone and stable rock strata on two sides in a tunnel so as to monitor the fault deformation of the fracture zone; respectively embedding a plurality of sets of dislocation meters in the seams of the tunnel lining structure so as to monitor the dislocation deformation of the lining structure; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
The above-described device for monitoring and arranging safety of a deep-buried tunnel is similar to the above-described embodiment of the method for monitoring and arranging safety of a deep-buried tunnel, and is not described herein again.
The device for monitoring and arranging the safety of the deep-buried tunnel comprises a processor and a memory, wherein the processing unit, the generating unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel may be set one or more, and the tunnel safety monitoring arrangement is determined by adjusting the kernel parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
The embodiment of the invention provides a storage medium, wherein a program is stored on the storage medium, and the program realizes the tunnel safety monitoring arrangement method when being executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the tunnel safety monitoring arrangement method is executed when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps:
determining potential damage surfaces of tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method; and generating a safety monitoring arrangement aiming at the potential damage surfaces of the tunnel surrounding rocks with different burial depths.
Preferably, the determining the potential damage surfaces of the tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method comprises the following steps: establishing a finite element model of a typical tunnel; performing surrounding rock strength numerical simulation on the completely excavated tunnel based on the finite element model of the typical tunnel, and determining strength reserve; continuously reducing the strength of the rock mass material based on the reduction coefficient by taking the strength reserve as a safety coefficient, so that the finite element model is not converged until the tunnel is damaged; and aiming at different burial depths, comparing the plastic region distribution of the tunnel surrounding rock under different reduction coefficients, and finding out the potential damage surfaces of the tunnel surrounding rock with different burial depths.
Preferably, the potential damage surface is a surrounding rock surface of a tunnel surrounding rock with distribution of plastic zones and through paths at the periphery.
Preferably, when the surrounding rock is class iii surrounding rock, the performing safety monitoring arrangement for the potential damage surface of the tunnel surrounding rock with different burial depths comprises: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at intervals smaller than or equal to a first preset interval, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; distributing a plurality of reinforcing steel bar meters and selecting a plurality of anchor rods at each surrounding rock surface convergence monitoring point, and distributing 1 anchor rod stress meter for each anchor rod to monitor the stress of the anchor rod; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
Preferably, when the surrounding rock is a type V surrounding rock with a fracture zone, the performing safety monitoring arrangement for the potential damage surfaces of the tunnel surrounding rocks with different burial depths includes: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at second preset intervals, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to match; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; for multiple surrounding rock surface convergence monitoring points, distributing multiple strain gauges at every 1 position; 1 set of wide-range multi-point displacement meters are buried in a hole near a joint surface of a fracture zone and stable rock strata on two sides in a tunnel so as to monitor the fault deformation of the fracture zone; respectively embedding a plurality of sets of dislocation meters in the seams of the tunnel lining structure so as to monitor the dislocation deformation of the lining structure; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device:
determining potential damage surfaces of tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method; and generating a safety monitoring arrangement aiming at the potential damage surfaces of the tunnel surrounding rocks with different burial depths.
Preferably, the determining the potential damage surfaces of the tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method comprises the following steps: establishing a finite element model of a typical tunnel; performing surrounding rock strength numerical simulation on the completely excavated tunnel based on the finite element model of the typical tunnel, and determining strength reserve; continuously reducing the strength of the rock mass material based on the reduction coefficient by taking the strength reserve as a safety coefficient, so that the finite element model is not converged until the tunnel is damaged; and aiming at different burial depths, comparing the plastic region distribution of the tunnel surrounding rock under different reduction coefficients, and finding out the potential damage surfaces of the tunnel surrounding rock with different burial depths.
Preferably, the potential damage surface is a surrounding rock surface of a tunnel surrounding rock with distribution of plastic zones and through paths at the periphery.
Preferably, when the surrounding rock is class iii surrounding rock, the performing safety monitoring arrangement for the potential damage surface of the tunnel surrounding rock with different burial depths comprises: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at intervals smaller than or equal to a first preset interval, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; distributing a plurality of reinforcing steel bar meters and selecting a plurality of anchor rods at each surrounding rock surface convergence monitoring point, and distributing 1 anchor rod stress meter for each anchor rod to monitor the stress of the anchor rod; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
Preferably, when the surrounding rock is a type V surrounding rock with a fracture zone, the performing safety monitoring arrangement for the potential damage surfaces of the tunnel surrounding rocks with different burial depths includes: arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at second preset intervals, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to match; drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer; for multiple surrounding rock surface convergence monitoring points, distributing multiple strain gauges at every 1 position; 1 set of wide-range multi-point displacement meters are buried in a hole near a joint surface of a fracture zone and stable rock strata on two sides in a tunnel so as to monitor the fault deformation of the fracture zone; respectively embedding a plurality of sets of dislocation meters in the seams of the tunnel lining structure so as to monitor the dislocation deformation of the lining structure; distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock; and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A safety monitoring and arranging method for a deep-buried tunnel is characterized by comprising the following steps:
determining potential damage surfaces of tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method;
and generating a safety monitoring arrangement aiming at the potential damage surfaces of the tunnel surrounding rocks with different burial depths.
2. The method for safety monitoring and arrangement of the deep-buried tunnel according to claim 1, wherein the step of determining the potential damage surfaces of the surrounding rocks of the tunnel with different burial depths by adopting a finite element strength reduction method comprises the following steps:
establishing a finite element model of a typical tunnel;
performing surrounding rock strength numerical simulation on the completely excavated tunnel based on the finite element model of the typical tunnel, and determining strength reserve;
continuously reducing the strength of the rock mass material based on the reduction coefficient by taking the strength reserve as a safety coefficient, so that the finite element model is not converged until the tunnel is damaged;
and aiming at different burial depths, comparing the plastic region distribution of the tunnel surrounding rock under different reduction coefficients, and finding out the potential damage surfaces of the tunnel surrounding rock with different burial depths.
3. The method for safety monitoring and arrangement of the deep-buried tunnel according to claim 1, wherein the potential damage surface is a surrounding rock surface of a penetrating path and distribution of plastic zones around surrounding rocks of the tunnel.
4. The method for safety monitoring and arrangement of the deep-buried tunnel according to claim 1, wherein when the surrounding rock is a class III surrounding rock, the safety monitoring and arrangement of the potential damage surfaces of the surrounding rocks of the tunnel with different burial depths comprises the following steps:
arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at intervals smaller than or equal to a first preset interval, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate;
drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer;
distributing a plurality of reinforcing steel bar meters and selecting a plurality of anchor rods at each surrounding rock surface convergence monitoring point, and distributing 1 anchor rod stress meter for each anchor rod to monitor the stress of the anchor rod;
distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock;
and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
5. The method for safety monitoring and arrangement of the deep-buried tunnel according to claim 1, wherein when the surrounding rock is a type V surrounding rock with a fracture zone, the safety monitoring and arrangement of the potential damage surface of the surrounding rock of the tunnel with different burial depths comprises the following steps:
arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at second preset intervals, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to match;
drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer;
for multiple surrounding rock surface convergence monitoring points, distributing multiple strain gauges at every 1 position;
1 set of wide-range multi-point displacement meters are buried in a hole near a joint surface of a fracture zone and stable rock strata on two sides in a tunnel so as to monitor the fault deformation of the fracture zone;
respectively embedding a plurality of sets of dislocation meters in the seams of the tunnel lining structure so as to monitor the dislocation deformation of the lining structure;
distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock;
and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
6. The utility model provides a device is arranged in deep-buried tunnel safety monitoring which characterized in that, the device includes:
a processing unit and a generating unit, wherein,
the processing unit is used for determining potential damage surfaces of tunnel surrounding rocks with different burial depths by adopting a finite element strength reduction method;
the generating unit is used for generating safety monitoring arrangement aiming at potential damage surfaces of tunnel surrounding rocks with different burial depths.
7. The deep-buried tunnel safety monitoring arrangement device of claim 6, wherein the determining potential failure planes of tunnel surrounding rocks of different burial depths by adopting a finite element strength reduction method comprises:
establishing a finite element model of a typical tunnel;
performing surrounding rock strength numerical simulation on the completely excavated tunnel based on the finite element model of the typical tunnel, and determining strength reserve;
continuously reducing the strength of the rock mass material based on the reduction coefficient by taking the strength reserve as a safety coefficient, so that the finite element model is not converged until the tunnel is damaged;
and aiming at different burial depths, comparing the plastic region distribution of the tunnel surrounding rock under different reduction coefficients, and finding out the potential damage surfaces of the tunnel surrounding rock with different burial depths.
8. The deep-buried tunnel safety monitoring arrangement device of claim 6, wherein the potential damage surface is a surrounding rock surface of a penetrating path and distribution of plastic zones appearing at the periphery of surrounding rocks of the tunnel.
9. The device of claim 6, wherein when the surrounding rock is a class III surrounding rock, the safety monitoring arrangement for the potential damage surface of the tunnel surrounding rock at different burial depths comprises:
arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at intervals smaller than or equal to a first preset interval, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to cooperate;
drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer;
distributing a plurality of reinforcing steel bar meters and selecting a plurality of anchor rods at each surrounding rock surface convergence monitoring point, and distributing 1 anchor rod stress meter for each anchor rod to monitor the stress of the anchor rod;
distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock;
and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
10. The device of claim 6, wherein when the surrounding rock is a type V surrounding rock with a fracture zone, the safety monitoring arrangement for the potential damage surfaces of the surrounding rocks of tunnels with different burial depths comprises:
arranging a plurality of surrounding rock surface convergence monitoring point monitoring sections at second preset intervals, arranging a plurality of convergence measuring points at each surrounding rock surface convergence monitoring point, and observing by adopting a bonding reflector plate and a total station to match;
drilling holes at the top, left and right waist parts and the bottom of the surrounding rock of each surrounding rock surface convergence monitoring point to embed 1 osmometer so as to monitor the osmometer;
for multiple surrounding rock surface convergence monitoring points, distributing multiple strain gauges at every 1 position;
1 set of wide-range multi-point displacement meters are buried in a hole near a joint surface of a fracture zone and stable rock strata on two sides in a tunnel so as to monitor the fault deformation of the fracture zone;
respectively embedding a plurality of sets of dislocation meters in the seams of the tunnel lining structure so as to monitor the dislocation deformation of the lining structure;
distributing a plurality of sets of multi-point displacement meters at each surrounding rock surface convergence monitoring point to monitor the internal deformation of the surrounding rock;
and distributing a plurality of joint meters at each surrounding rock surface convergence monitoring point, and monitoring the opening degree of the joint surface of the tunnel and the surrounding rock.
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