226results about How to "Quick and accurate determination" patented technology

The invention discloses a high ground stress weak surrounding rock tunnel excavation and support construction method. Excavation and support construction are conducted on a weak surrounding rock tunnel to be constructed in multiple sections from rear to front in the longitudinal extension direction of the tunnel. The method comprises the steps that 1, rock body strength and the maximum ground stress inside surrounding rock are tested; 2, the extrusion-type large-deformation level of the surrounding rock is determined; 3, a primary support scheme is determined, wherein the primary support scheme is determined according to the determined extrusion-type large-deformation level, and the primary support scheme is a profile steel frame support scheme or a grid steel frame and cover arch combined support scheme; 4, tunnel excavation and support construction are conducted; 5, excavation and support construction of the next section are conducted; 6, the fifth step is repeated for many times till the whole excavation and support construction process of the weak surrounding rock tunnel to be constructed is completed. According to the high ground stress weak surrounding rock tunnel excavation and support construction method, the steps are simple, the design is reasonable, construction is convenient, the use effect is good, the tunnel excavation and support construction process of the high ground stress weak rock tunnel can be completed easily, conveniently and rapidly, and the construction process is safe and reliable.

The invention discloses a water-rich weak surrounding rock long-and-big tunnel construction method. The method includes that a tunnel inclined shaft is arranged on one side of a main tunnel of a tunnel to be constructed, the main tunnel is divided into a tunnel entry section, a tunnel exit section and a middle connecting section connected between the tunnel entry section and the tunnel exit section, the middle connecting section is divided into an inclined shaft assisting construction entry section and an inclined shaft assisting construction exit section, and each of the tunnel entry section, the tunnel exit section, the inclined shaft assisting construction entry section and the inclined shaft assisting construction exit section is divided into multiple sections for construction. A construction method of each section includes: step 1, performing geological forecasting in advance, and when a debris flow formation exists ahead, entering a step 2, or else, entering a step 3; step 2, performing stability control construction; step 3, determining a primary supporting scheme; step 4, excavating the tunnel, and performing primary supporting construction; step 5, performing secondary lining construction on the tunnel. The water-rich weak surrounding rock long-big tunnel construction method is simple in step, reasonable in design, simple and convenient to construct, good in using effect, capable of meeting construction requirements of water-rich weak surrounding rock long-and-big tunnels, short in construction period and safe in construction process.

The invention discloses a soft rock tunnel deformation control method based on anchor rod force analysis. A soft rock tunnel is excavated and subjected to deformation control construction from back to front according to multiple segments, and when any segment is excavated and subjected to deformation control construction, the method includes the steps that 1, surrounding rock basic mechanical parameters are determined; 2, the tunnel reserved excavated volume is determined; 3, the tunnel is excavated; 4, a tunnel preliminary bracing structure is determined; 5, tunnel deformation control construction is carried out, wherein in the tunnel preliminary bracing construction process, a flexible mold bracing structure is constructed from back to front; 6, a next segment is excavated and subjected to deformation control construction; 7, the step 6 is repeated multiple times till the full excavation and deformation control construction process of the soft rock tunnel is completed. The soft rock tunnel deformation control method is reasonable in design, convenient to achieve and good in use effect, the reserved excavated volume is determined according to the surrounding rock deformation condition of the soft rock tunnel, the flexible mold bracing structure is adopted for carrying out full-section bracing on the tunnel, the flexible mold bracing structure and the tunnel preliminary bracing structure are in coordination deformation, and deformation of the soft rock tunnel can be effectively controlled.

The invention discloses an excavation and preliminary bracing method for a soft rock tunnel. The excavation and preliminary bracing construction for the soft rock tunnel are performed in sections from back to front. When any section is subjected to excavation and preliminary bracing construction, the method comprises the following steps: 1) confirming basic mechanical parameters of the surrounding rock; 2) confirming the reserved excavated volume of the tunnel: confirming the reserved excavated volume of the currently constructed section according to a theoretical value of inward displacement of the surrounding rock of the soft rock tunnel after being braced; 3) excavating the tunnel; 4) confirming a preliminary bracing structure of the tunnel; 5) constructing the preliminary bracing of the tunnel; 6) performing the excavation and preliminary bracing construction of the next section; and 7) repeating the step 6) till all the processes of the excavation and preliminary bracing construction of the soft rock tunnel are completed. The method disclosed by the invention has the advantages of simple steps, reasonable design, convenience in realization and good use effect; the reserved excavated volume is confirmed according to the surrounding rock deformation condition of the soft rock tunnel; and the steel bracket and the anchoring net sprayed preliminary bracing structure are coordinated for performing all-section preliminary bracing on the tunnel.

The invention discloses a method and system for positioning faults in a power distribution network section containing a distributed power supply. The method includes the following steps: establishing a power distribution network fault positioning model containing the distributed power supply; based on the power distribution network fault positioning model and each preset initialization parameters, using the preset binary system intelligent algorithm to calculate and generate an initial population; based on the global extreme and individual extreme of the initial population, updating flying speeds of particles; based on the updated flying speeds of the particles, updating the positions of the updated particles; using the binary system coding formula to conduct discretization on the updated particles to form a new generation of population; when the conditions of iteration termination are met, outputting positioning results; based on the influence of DG on fault current, dividing different regions, and looking for the fault critical points of the different regions. The report threshold value of fault current is set and the direction element of the fault current is installed so as to prevent fault report information from the influence by the DG. The method can rapidly and accurately determine the positions of faults, accelerates the recovery of power supply of the system, and increases system stability.

The invention discloses a soft rock tunnel excavation method based on anchor bolt stress and the soft rock tunnel is excavated by a plurality of sections in a longitudinally direction of the tunnel from rear to front. The method for excavating any section of the soft rock tunnel comprises the following steps: first, determing the basic mechanical parameters of surrounding rock; second, determing the reserved excavation capacity of tunnels: determing the capacity of reserved excavation of the current construction section according to a theoretical value S of the soft rock tunnel inward displacement after the completion of supporting, the S is the sum of plastic displacement of surrounding rock in soft rock tunnel and displacement after shaping deformation of surrounding rock in soft rock tunnel; third, the tunnel is excavated; fourth, the next section is excavated; fifth, repeating step fourth until the full excavation of the soft rock tunnel is completed. The soft rock tunnel excavation method has the advantages of simple steps, reasonable design and convenient implementation, and has good effect. The excavation capacity is determined according to the deformation of the surrounding rock of the soft rock tunnel, which can solve the problem of the reserve deformation of the soft rock tunnel, avoid the problem of soft rock tunnel repair work and cost less.

The invention discloses a method for determining a duct piece splicing point position of a universal ring for subway shield construction. The method comprises the following steps: performing shield tunneling construction on a constructed tunnel from back to front along the central axis of the tunnel by adopting a shield tunneling machine; after a ring of the shield tunneling construction is completed, performing shield duct piece splicing construction; before any ring of shield duct piece splicing construction, determining the duct piece splicing point position of shield duct pieces of the current ring first, wherein the method for determining the duct piece splicing point position comprises the following processes: firstly, determining selectable splicing point positions; secondly, determining selection influence indexes and weight coefficients thereof: respectively determining the three selection influence indexes which influence the selection of the duct piece splicing position point and the weight coefficients thereof; thirdly, performing selectivity evaluation on the selectable splicing position points: respectively evaluating the selectivity of each selectable splicing position point according to a weight coefficient method, and determining the duct piece splicing point position of the current shield duct piece. The method disclosed by the invention is simple in step, reasonable in design, convenient to implement and good in using effect, and can determine the splicing point position of the duct pieces of the universal ring easily, conveniently and accurately.

The invention discloses a soft rock tunnel construction method on the basis of flexible formwork support. A soft rock tunnel is divided into a plurality of segments from back to front to be subjected to construction. Construction of any one segment comprises the following steps that (1), basic mechanical parameters of surrounding rocks are defined; (2), the tunnel reserved excavating quantity is defined; (3), the tunnel begins to be excavated; (4), A tunnel support structure is defined: the tunnel support structure comprises a tunnel incipient support structure, a flexible formwork support structure and tunnel two-time linings; (5), tunnel incipient support is constructed; (6), the flexible formwork support is constructed; (7), the tunnel two-time linings are constructed; (8), a next segment is constructed; and (9), step (8) is repeated for many times until all the construction processes of the soft rock tunnel are completed. According to the soft rock tunnel construction method on the basis of the flexible formwork support, the method and the steps are easy, design is reasonable, achieving is convenient, and the using effect is good; and the reserved excavating quantity is defined according to deformation conditions of the surrounding rocks of the soft rock tunnel, the flexible formwork support structure is adopted to support full cross sections of the tunnel and subjected to coordination deformation with the tunnel incipient support structure, and thus structure stability of the tunnel two-time linings is guaranteed.

The invention discloses a cartoon role contour tracing method based on key frame, comprising the following steps of: firstly, artificially selecting key frames from a section of motion sequence of cartoon roles and drawing up the contours of the cartoon roles on each key frame by using curves; then, constructing an optimization model by utilizing contour information labeled on the key frames; and finally, transforming the optimization model into a non-linear least square question for solving and tracing the positions of the contours of the cartoon roles on other frames of the motion sequence. The method can precisely trace the contours of the cartoon roles from a section of motion sequence by effectively utilizing constraint information on time sequences and space, and can be used for analyzing the deformations the roles on each position of the motion sequence by utilizing the contour of the cartoon roles on each position of the motion sequence, wherein the contour of the cartoon roles on each position is captured and obtained by the contour tracing method.

The invention provides a method and device for achieving message layer-2 isolation based on a VLAN and an interchanger. The method includes the steps that a message is received and analyzed; when it is determined that the VLAN ID carried in the analyzed message is a preset VLAN ID and the analyzed message is in a layer-2 forwarding mode, layer-2 isolation is conducted on the analyzed message. According to the method and device, layer-2 isolation can be conducted on the message from the specific VLAN ID flexibly, and the problems existing in a port isolation method in the prior art are solved.

The invention discloses a method for determining the deformation allowance of a high-ground-stress soft surrounding rock tunnel in excavation, which comprises the following steps: 1, excavation of a test section, wherein the test section of the constructed soft surrounding rock tunnel is excavated from back to front along the longitudinal extension direction of the tunnel; and in the process of excavating, a tunnel hole formed by excavating is subjected to preliminary bracing from back to front, and then a preliminary bracing structure of the tunnel hole is obtained; 2, deformation monitoring, wherein crown settlement values and horizontal clearance convergence values on N tunnel monitoring cross-sections in the test section are respectively monitored, and then N sets of deformation monitoring data respectively corresponding to the N tunnel monitoring cross-sections are obtained; 3, determination on a deformation allowance range based on an assurance rate, wherein the determined deformation allowance range includes a deformation allowance range of an arch of the tunnel and a deformation allowance range of a side wall of the tunnel; and 4, determination of deformation allowance. The method disclosed by the invention is simple in steps, convenient to implement, low in invested cost and good in using effect, and can effectively solve the problem of determining the deformation allowance of the high-ground-stress soft surrounding rock tunnel.

The invention discloses a mask and a method for detecting the light leakage degree of a photo-etching machine, and relates to the field of semiconductor manufacturing. The method comprises the following steps: providing a wafer coated with photoresist and a mask comprising a strip width test pattern and a full shading pattern; performing first exposure by using the mask; translating the mask to enable part of the strip width test pattern on the surface of the wafer to be completely covered by the full shading pattern on the mask; carrying out secondary exposure and development, the developed wafer surface comprising a repeated exposure strip width test pattern and an initial exposure strip width test pattern; and acquiring the strip width of the repeated exposure strip width test pattern and the strip width of the initial exposure strip width test pattern, and determining the light leakage degree of a photo-etching machine. The problem that the light leakage degree of a photo-etching machine cannot be rapidly and accurately obtained by an existing detection method is solved. The light leakage degree of a photo-etching machine can be quickly and accurately measured.

The invention relates to an image restoration method and device, a computer readable storage medium and electronic equipment. The method comprises the steps of determining a first feature map of a damaged image; Determining a missing part feature map of a target area of the damaged image according to the first feature map, and obtaining a target feature map according to the first feature map and the missing part feature map; And generating a repair image corresponding to the damaged image according to the target feature map. Therefore, according to the technical scheme, the image is repaired by determining the missing part feature map of the damaged image, on one hand, the missing part in the damaged image can be rapidly and accurately determined during image repairing, and therefore the accuracy and precision of an image repairing result are effectively improved. And on the other hand, the missing part in the damaged image can be more concerned during image restoration, so that the robustness and the mobility of the image restoration method can be effectively improved, and the user experience is improved.

The invention provides an urban rail vehicle air conditioner system fault diagnosis method and device. After a fault signal acquired by an acquisition module through monitoring of the acquisition module on an air conditioner system is obtained, the fault signal is processed with a wavelet packet transform algorithm, reconstructed signals of different frequency bands of the fault signal are obtained, then, feature information of the fault signal can be obtained according to the reconstructed signals, at the moment, the feature information is calculated by adopting a possibility clustering algorithm, a fault type corresponding to the fault information can be rapidly and accurately determined so that processing can be accurately and rapidly performed according to the fault type, the urban rail vehicle air conditioner system can rapidly recover normal work, and a comfortable riding environment for passengers is guaranteed.

The invention, which belongs to the technical field of mineral identification, proposes a mineral identification method based on reflection spectrum. The method comprises the following steps: S1, carrying out data measurement; to be specific, measuring a plurality of sampling points in a sample by using a spectrograph to obtain a measurement value; S2, carrying out data processing; to be specific,acquiring a spectral waveform of each sampling point based on the measurement value of each sampling point in the S1, carrying out splicing correction, and then carrying out equalization to obtain aspectral waveform of the sample; S3, carrying out mineral identification; to be specific, carrying out calculation on the spectral waveform data of the sample in the S2 to obtain the position of a characteristic valley, carrying out standard matching on typical minerals in a spectrum database based on the wavelength of the characteristic valley to obtain a matched mineral, and then comparing the spectral waveform of the matched mineral with the spectral waveform of the sample to obtain minerals that may exist in the sample; and S4, carrying out data calculation; to be specific, carrying out fitting calculation on the minerals that may exist in the sample to obtain mineral compositions in the sample and relative content of all compositions. Therefore, problems of low recognition precision and long recognition time in the prior art are solved.

The invention relates to a method and a device for checking the direction of antenna feeders of base stations. The method includes: acquiring call release bill data in each sector of the base stations in a set time period, wherein when calls are released, a user terminal is kept connected with at least three base stations; determining the location of the user terminal when any call in any sector of the base stations is released according to the acquired bill data; fitting a bill direction angle of any sector on the basis of the determined location of the user terminal when all the calls in any one of the sectors are released; determining whether the antenna feeder in each sector of the base stations has connection errors or not and whether a work parameter direction angle of each sector is correct or not according to the relation between the bill direction angle of each sector of the base stations and the work parameter direction angle. By the method and device, the connection problem of the antenna feeders of the base stations can be checked efficiently.

The invention provides an LLC synchronous rectifying device. The LLC synchronous rectifying device comprises an input end, a switching circuit, a resonant network circuit, a transformer, a rectifyingand filtering circuit, an output end and a driving device, the driving device comprises a driving module, a resonant frequency detecting module, an excitation current detecting module, and a rectification shutdown module, the driving module is connected to the switching circuit, the driving module outputs the driving signals to drive the switching circuit to be turned on, the resonant frequency detecting module and the excitation current detecting module are respectively connected with the resonant network circuit, and the resonant frequency detecting module acquires the resonant current of the resonant network circuit, and resonant frequency detecting module sends the resonant current to the rectification shutdown module, the excitation current detecting module obtains the excitation current of the resonant network circuit, and sends the excitation current to the rectification shutdown module, and the rectification shutdown module receives the resonant current and the excitation current, and monitors the corresponding time of driving signal when the resonant current and excitation are equal. The LLC synchronous rectifying device can effectively, quickly and accurately determine the turn-off time of the secondary MOSFET and the control is simple and the cost is low.