135 results about "Tunneling direction" patented technology

The invention discloses a shield tunneling intelligent auxiliary method based on stratum types. The method comprises the steps that parameters of a current shield tunneling machine in the tunneling process are collected; through Pearson's correlation coefficient calculation, correlation coefficients of all the parameters and the total thrust and the cutterhead torque are obtained respectively, and a feature combination is obtained; utilizing a K-means algorithm to calculate and obtain a stratum classification result which is clustered by taking a basic combination consisting of the total thrust and the cutterhead torque and a feature combination as a feature set; a cooperative training algorithm is adopted, and dug stratum classification based on the basic combination and the feature combination is obtained under semi-supervised learning; a machine learning algorithm is utilized to carry out learning training on types of excavated stratums, unknown stratum conditions in the tunneling direction are identified, and a reference range of total thrust and cutterhead torque is given. The method can be circularly executed in the shield tunneling process, the excavated stratum classification result is continuously updated, the method has the characteristics of practical feasibility, real-time performance and the like, and important auxiliary decision-making information can be provided for shield tunneling.

The invention discloses a control method for adjusting the tunneling attitude of a shield tunneling machine, particularly relates to the field of attitude control of the shield tunneling machine, and aims to solve the problem that attitude deviation caused by underground environment change cannot be timely and effectively corrected in the tunneling process of the shield tunneling machine. The method comprises the following steps of: calculating membership degrees of horizontal deviation, vertical deviation and change rates of the horizontal deviation and the vertical deviation, extracting high-frequency and low-frequency characteristics, generating independent phase signals, and calculating a judgment coefficient by using a multi-dimensional data fusion and high-dimensional exponential integration method so as to dynamically adjust the weight of a fuzzy control rule base and realize adaptive optimization of PID (Proportion Integration Differentiation) gain parameters; a master control output signal is generated based on the updated PID parameters, the thrust of the partition oil cylinders is accurately adjusted, it is ensured that the posture of the shield tunneling machine is rapidly, accurately and stably adjusted under the complex environment condition, the control precision of the tunneling direction and the construction safety are improved, and the working efficiency is improved. And meanwhile, the overall posture correction capability of the shield tunneling machine is further enhanced through dynamic adjustment of the rolling angle.

A tunnel boring device and a tunnel boring machine, which aim to solve the problem of a hinged oil cylinder being likely to be damaged due to a propulsion mode. The tunnel boring device (100) comprises a front shield (110), a middle shield (120), and a tail shield (130). A first propulsion assembly (140), a second propulsion assembly (150) and an auxiliary propulsion member (160) are provided inside the tunnel boring device; the auxiliary propulsion member (160) is located between the front shield (110) and the second propulsion assembly (150); and when the front shield (110) is stuck, the second propulsion assembly (150) moves in a tunneling direction, such that a second end of the second propulsion assembly (150) comes into contact with and abuts against the auxiliary propulsion member (160), thereby pushing the front shield (110) to free the front shield. In the present application, a dual-mechanical force transmission structure is provided, which helps to avoid the risk whereby a hinged oil cylinder is likely to be damaged when ultrahigh thrust is transmitted to the front shield by means of a single mechanical force transmission structure, and which transmits the ultrahigh thrust to the front shield, facilitating escape of the front shield, and then guaranteeing normal boring of a tunnel boring machine.

The invention discloses a multi-posture combined pipe jacking device, a pipe jacking construction method and a pipe roof structure, and relates to the technical field of tunnel construction.The multi-posture combined pipe jacking device comprises a tunneling system and a propelling system; the tunneling system comprises a jacking assembly and a plurality of tunneling assemblies, the jacking assembly comprises a jacking machine head and a jacking guide pipe detachably installed on the tail portion of the jacking machine head, each tunneling assembly comprises a tunneling machine head and a tunneling guide pipe detachably installed on the tail portion of the tunneling machine head, and the tunneling machine heads are installed on the two sides of the jacking machine head respectively. The multiple tunneling guide pipes are arranged on the two sides of the jacking guide pipe in an engaged mode to form engaged guide pipes. The propelling system can push the jacking guide pipe and the tunneling guide pipe to move in the tunneling direction and push the jacking machine head and the tunneling machine heads to move in the tunneling direction through the jacking guide pipe and the tunneling guide pipes correspondingly. The pipe jacking construction of the occlusion guide pipe can be achieved, the jacking efficiency is high, the construction period is short, and the construction cost is low.

The invention discloses a shield guiding system based on single-axis rotation inertial navigation and a total station. The shield guiding system is characterized in that a shield head of a shield tunneling machine faces the tunneling direction of a tunnel; the inertial navigation unit measures attitude information of the shield tunneling machine, and the control box is connected with the inertial navigation unit through a cable and used for transmitting the attitude information of the inertial navigation unit to the industrial computer through the control box; the rear-end prism is mounted on a tunnel pipe wall, the total station is mounted between the inertial navigation device and the rear-end prism, and coordinate information of the inertial navigation device under a coordinate system of the total station is measured through the aiming prism; data exchange is carried out between the radio station and the total station according to an internal protocol, and data of the total station is sent to the industrial computer; the industrial computer is connected with the radio station and the control box through cables, coordinate transformation is carried out based on collected measurement information of inertial navigation and the total station, and the deviation between a reference point of the shield tunneling machine and a designed standard route and the tunneling trend of the shield tunneling machine are calculated. The system is high in measurement real-time performance, high in environmental adaptability and easier to maintain.

The invention discloses an intelligent monitoring method and system for a shield to pass through a bridge pile foundation, and belongs to the field of intelligent monitoring, and the method comprises the following steps: processing three-dimensional attitude data through a dynamic weighted Kalman filtering method, and obtaining a filtered attitude parameter sequence; estimating a dynamic deviation value of the shield tunneling machine based on the attitude parameter sequence, and outputting a quantitative evaluation result; performing space-time alignment on the inclination angle information and the attitude parameter sequence to obtain an aligned angle comparison data set; based on the angle comparison data set, a matching error vector between the posture of the shield tunneling machine and the inclination angle of the pile foundation is calculated, the error vector is optimized, and an optimized matching error index is obtained; fusing the attitude deviation value into the matching error index to generate a fused relative position relation matrix; based on the relative position relation matrix, the included angle deviation between the tunneling direction of the shield tunneling machine and the pile foundation axis is calculated, and a deviation adjusting signal is generated; and generating an attitude correction instruction sequence based on the deviation adjustment signal and the real-time construction parameters.

The invention discloses a roadway-side filling body and roof grouting collaborative roadway protection method, which comprises the following steps: drilling a fracture surrounding rock on one side of a goaf along the roadway direction to obtain a roof drill hole, arranging a roadway-side filling wall structure below the roof drill hole, filling gangue in the roof drill hole, and grouting the roof drill hole and the inside of the roadway-side filling wall structure respectively, after the slurry in the roadside filling wall body structure is solidified, a roadside filling body is formed, and finally the roadside filling wall body structure is dismantled, so that the supporting advantages of roof grouting and roadside filling are jointly exerted, roof damage caused by surrounding rock and water-rich rock strata is effectively controlled, the overall stability of a roadway is remarkably improved, and the construction cost is reduced. And disasters such as water inrush and roof caving of the roadway roof are prevented, and the method is suitable for supporting high-risk roadways in weak surrounding rock and water-rich areas.

The utility model provides an onboard temporary supporting device which comprises a supporting frame and supporting columns, the number of the supporting columns is two, the supporting columns are arranged on the two sides of a cutting arm of a heading machine respectively and rotationally connected with the cutting arm, and the ends, away from the heading machine, of the two supporting columns are rotationally connected with the supporting frame through two connecting bases respectively. Buffering assemblies are arranged on the two sides of the top face of the supporting frame respectively, a displacement assembly capable of moving in the tunneling direction of the tunneling machine is arranged at the front end of the supporting frame, and overturning assemblies allowing the supporting columns and the supporting frame to be overturned are arranged on the two supporting columns. The device is easy to operate and good in supporting effect, the buffering effect can be effectively achieved when coal mine rockfall occurs, and the service life of the supporting device can be effectively prolonged.

The invention discloses a multi-element disaster cooperative treatment method during coal mine roadway tunneling, which specifically comprises the following steps: drilling holes at a roadway coal seam along the tunneling direction to form a first drill hole, performing retrogressive staged fracturing in the first drill hole, and respectively drilling holes in roadway sides on two sides of a roadway to form a second drill hole; respectively drilling the final hole position of each drill hole to the position corresponding to the final hole position of the first drill hole along the direction parallel to the roadway to form a second drill hole and a third drill hole, respectively carrying out transient electromagnetic detection on the second drill hole and the third drill hole, respectively carrying out retreat type staged fracturing after the transient electromagnetic detection is completed, installing a gas extraction system on one roadway side of the roadway, and installing a gas extraction system on the other roadway side of the roadway. The second drill hole and the third drill hole are connected into a gas extraction system for gas extraction; cooperative treatment of multi-element disasters in the roadway can be achieved, the effect that each hole has multiple purposes is achieved, the repeated construction and disaster treatment time is shortened, and the roadway tunneling speed is increased.

The invention provides a grouting reinforcement and rapid excavation construction method for a small-clear-distance tunnel in a high-water-level area. The grouting reinforcement and rapid excavation construction method comprises the following steps that (1) an interval tunnel is excavated through a CRD method, and earthwork is excavated in each pilot tunnel according to a benching method; (2) after the whole tunnel face is excavated to the grout stopping wall, the tunnel face is closed in time; (3) grouting is temporarily set as a 20m cycle in the tunneling direction of the tunnel, a 3m water stop disc is formed, full-section grouting and a retreating type grouting process are carried out in the sequence of outside-to-inside spaced jump hole grouting, and grouting of the next cycle is completed; the deformation influence of grouting on a tunnel gap stratum and an adjacent tunnel is reduced, it is ensured that soil bodies of a tunnel face and an arch part are stable when the tunnel is excavated, and therefore tunnel grouting and excavation construction can be efficiently, accurately and safely completed.

The utility model discloses a shield tunnel segment wall back grouting real-time detection device which is arranged at the shield tail of a shield tunneling machine, two construction platforms are symmetrically arranged in the shield tunneling machine, and the shield tunnel segment wall back grouting real-time detection device comprises an annular track which is movably installed between the two construction platforms in the tunneling direction of the shield tunneling machine. The circular track has an arc consistent with the radian of the outer wall of the duct piece; the sound wave detector is arranged on the outer side of the annular track in a reciprocating motion mode along the annular track, and the height of the sound wave detector can be adjusted in the radial direction of the duct piece; according to the grouting plumpness detection device, the grouting plumpness on a propagation path is reflected by utilizing the propagation speed of the sound waves in different media and the frequency change of the waves, the grouting plumpness can be detected in real time along with tunneling of a shield, and the grouting plumpness can be accurately detected. And a certain popularization value is achieved.

The invention relates to a long-distance ultra-wideband one-dimensional positioning method suitable for a long and narrow tunnel, and the method comprises the steps: S1, building a relative coordinate system in the tunnel, and laying at least one ultra-wideband base station along the direction of the tunnel; s2, configuring parameters of the ultra-wideband base station according to the trend of the tunnel; s3, base station fitting parameters are solved according to the configured parameters; s4, caching all data received under the same positioning frame, sorting according to the distance measurement values from large to small, reserving a group of data with the shortest distance, and storing parameters, directional antenna marks and distance measurement values of the corresponding ultra-wideband base station; and S5, obtaining a positioning result of the ultra-wideband positioning tag according to the parameters of the ultra-wideband base station, the base station fitting parameters, the directional antenna sign and the ranging value. According to the method, a one-dimensional positioning effect can be realized by adopting a single base station, the construction layout and equipment cost is effectively reduced, multi-base-station trajectory fitting is supported, and the method is widely applied to the field of long-distance positioning service of long and narrow tunnels.

The utility model provides a grease pump supporting device for shield split launching. The grease pump supporting device comprises a first guide rail, a second guide rail and a trolley. Wherein the first guide rail and the second guide rail are detachably arranged on one side of the tunnel in the tunneling direction of the tunnel, and the height of the first guide rail is larger than that of the second guide rail; the trolley comprises a frame, at least one first walking wheel and at least one second walking wheel, the frame is connected with the shield main machine, the frame is provided with a first bearing face arranged in the horizontal direction, the first bearing face is used for arranging at least one grease pump, and the first walking wheel and the second walking wheel are arranged on the two sides of the frame respectively. The first walking wheel is in rolling connection with the first guide rail, and the second walking wheel is in rolling connection with the second guide rail. According to the grease pump supporting device for shield split starting, the problem that the length of a pipeline between the shield main machine and the grease pump is too large during split starting is solved, and stable grease injection pressure of the grease pump is achieved.

The invention relates to the field of tunnel engineering, and provides a method for identifying and forecasting an unstable block of a tunnel face in order to improve the accuracy and efficiency of identifying the unstable block of the tunnel face and realize advanced forecasting of the unstable block of the tunnel face. The main structural surface of the tunnel face is effectively extracted, and the efficiency and accuracy of structural surface recognition are greatly improved; according to the method, the spatial relationship between the structural plane and the tunnel direction is analyzed, potential unstable blocks can be accurately identified, the unstable block distribution of the future tunnel face is predicted in advance, and the safety risk in the tunneling process is reduced.

The application discloses a tunnel deformation monitoring device, which comprises four adsorption walking devices, a spherical hinge is connected to the upper side of each adsorption walking device, a plurality of supporting springs are fixedly connected to the outer circumferential surface of the support rod in an annular array, the lower ends of the supporting springs are fixedly connected to the upper side of the adsorption walking device, a guide rail ring is connected to the upper side of the support rod, a sliding seat is slidably connected to the guide rail ring, a range finder is arranged on the sliding seat, the range finder is a laser range finder, and a touch device is arranged on the sliding seat. When one of the adsorption walking devices loses the adsorption effect, the remaining three adsorption walking devices determine a plane as a reference, and the measurement is sequentially monitored, so that the measurement deviation caused by the adsorption effect of the measurement position is reduced, the measurement position can be randomly selected along the tunnel direction, and the total station and a large number of monitoring markers need not be frequently erected and moved, so that the monitoring is convenient and fast.

The application provides a tunnel anchor machine and relates to the technical field of tunnel anchor machine equipment. The tunnel anchor machine comprises an upper body of the tunnel anchor machine and a lower body of the tunnel anchor machine, the lower end of the upper body of the tunnel anchor machine is provided with a self-lubricating part, the lower body of the tunnel anchor machine is provided with a connecting shaft, the length direction of the connecting shaft is used for being consistent with the tunneling direction of the tunnel anchor machine, one end of the connecting shaft is arranged on the lower body of the tunnel anchor machine, the other end penetrates through the self-lubricating part and is in sliding connection with the self-lubricating part, and the self-lubricating part slides on the connecting shaft through an oil cylinder. In this way, the sliding connection between the self-lubricating part and the connecting shaft realizes the movement of the upper body of the tunnel anchor machine relative to the lower body of the tunnel anchor machine, so that the tunnel anchor machine can realize the fixed-point cutting operation and has the functions of cutting compensation and section shaping, thereby avoiding the movement of the whole tunnel anchor machine and improving the tunneling efficiency.

The invention discloses a shield construction management and control method and system based on a digital twin platform, and the method comprises the steps: obtaining geological data and shield tunneling machine data, and constructing a twin finite element model corresponding to a target shield interval tunnel according to the geological data and the shield tunneling machine data; shield tunneling machine excavation simulation calculation is conducted on the twinborn finite element model, and the twinborn finite element model is divided into a plurality of sub-models according to the daily planned tunneling amount after calculation is completed; the width of the sub-model in the tunneling direction is the daily planned tunneling amount; according to a simulation calculation result of the twinborn finite element model, constructing a boundary condition of each sub-model to form a plurality of twinborn sub-models; and managing and controlling the process of tunneling the target shield interval tunnel by the shield tunneling machine through the plurality of twin sub-models. According to the method, the data of the previous round of construction are accurately fed back to the calculation of the next round in a segmented calculation mode, so that the accuracy of model simulation is effectively improved, and the prediction of the risk of the next round of shield construction is improved.

The embodiment of the invention provides a walking type heading machine and a control method, and relates to the technical field of heading equipment. The walking type heading machine comprises a main machine. The main beam is connected with the main machine; the first propelling supporting structure and the second propelling supporting structure each comprise a plurality of propelling supporting assemblies, and the propelling supporting assemblies of the first propelling supporting structure and the second propelling supporting structure are alternately arranged in the circumferential direction of the main beam. Each propelling and supporting assembly comprises a propelling part and a supporting shoe set, the supporting shoe sets move relative to the main beam so as to be tightly supported on the surrounding rock, and the propelling parts are used for providing tunneling thrust for the main beam when the supporting shoe sets are tightly supported on the surrounding rock; the propelling supporting assemblies of the first propelling supporting structure and the second propelling supporting structure are configured to be alternately supported on surrounding rock in the tunneling moving direction of the main beam and provide tunneling thrust for the main beam, step changing operation is carried out in the tunneling process, the tunneling action does not need to be stopped, it is ensured that the tunneling thrust is continuously output to the main beam, and continuous tunneling operation is achieved.

The invention discloses an underground space TBM tunneling direction transient electromagnetic advanced detection device and method, a motor is used as a magnetic core, so that electromagnetic signals can be enhanced, two transmitting coils and a receiving coil are arranged at the same time, and the two transmitting coils are respectively connected with equal and opposite currents to form transmitting sources with mutually offset magnetic fields, so that the electromagnetic signals can be enhanced. A pure secondary field response signal is generated at the position of the receiving coil; according to the mode, transient electromagnetic tunnel advanced geological forecast detection can be carried out in the tunneling direction of the TBM in the underground space, the detection precision is high, and no blind area exists in the detection range; in addition, in the detection process, no matter whether the tunneling direction is deflected or not, the front of the initial tunneling horizontal direction can be detected all the time, so that the advanced detection stability is guaranteed, whether the tunneling direction is deflected or not can be monitored in real time by processing electromagnetic data in the detection process, deflection angle information is judged, and the detection accuracy is improved. And then the TBM is guided to adjust the tunneling posture, and the tunneling efficiency is guaranteed.

The application provides a tunneling angle positioning system and device, comprising a tunneling equipment positioning system, a ground equipment positioning system and a mine roof equipment positioning system; the tunneling equipment positioning system is used for adjusting the tunneling direction of the tunneling equipment during tunneling; the ground equipment positioning system is used for positioning adjustment of the mine tunnel ground during tunneling and signal transmission of the tunneling equipment positioning system; and the mine roof equipment positioning system is used for signal transmission of the tunneling equipment positioning device and the ground positioning device when the mine roof is placed. The application has the beneficial effect that through cooperation among the tunneling equipment positioning system, the ground equipment positioning system and the mine roof equipment positioning system, and through positioning cooperation on the ground and the mine tunnel during tunneling, the tunneling process can be performed in multiple directions at any time through the positioning system, and deviation in the tunneling process can be avoided.

The utility model relates to the technical field of tunneling equipment with a drilling or cutting tool, in particular to a tunneling machine. The tunneling machine comprises a shield body and an excavation device mounted in the shield body, the excavation device comprises a cantilever mechanism and a rotary seat, a mounting base body for the rotary seat to be rotatably mounted along a rotary axis extending in the tunneling direction is arranged in the shield body, and a rotary driving mechanism for driving the rotary seat to rotate is arranged in the shield body; one end of the cantilever mechanism is hinged to the rotary seat and is provided with a swing arm driving mechanism used for driving the cantilever mechanism to swing relative to the rotary seat, and the other end of the cantilever mechanism is provided with a rock breaking head, and the rotary driving mechanism drives the rotary seat to rotate to be matched with the swing arm driving mechanism to drive the cantilever mechanism to swing relative to the rotary seat; the installation structure of the movement mechanism can be simplified while the excavation range of the excavation device is guaranteed, and cost reduction is facilitated.

This invention discloses a method and system for calculating the lateral displacement of an adjacent tunnel caused by bottom heave during foundation pit excavation. The method first calculates the lateral displacement of the soil at any depth at the retaining structure caused by the unloading of the bottom heave, and then, based on the deformation coordination between the soil and the retaining structure, converts it into an equivalent displacement S of the retaining structure. z (z); then, based on the displacement S of the enclosure structure z (z) and the maximum displacement value S reached in the active state a The ratio η is used to obtain the cohesion utilization value, and from this, the non-limit active earth pressure p is obtained based on the theory of non-limit active earth pressure. a Thus, the horizontal unloading stress p1 is obtained, and finally, the additional horizontal stress σ in the tunnel direction is obtained. y Ultimately, the additional horizontal stress σ in the tunnel is... y The load P(x) is obtained, and the governing equation for the tunnel's lateral displacement ω(x) is derived based on the coordination between soil and tunnel displacement. This equation is then expressed in matrix form to calculate the tunnel's lateral displacement ω(x). This calculation method allows for a more accurate assessment of the impact of foundation pit construction on the tunnel structure in practice, providing guidance for foundation pit design and construction.

A kind of shield guiding system based on single-axis rotation inertial navigation and total station, comprising: shield machine shield first face tunneling direction;Inertial navigation measurement shield machine's attitude information, control box is connected with inertial navigation by cable, for transmitting the attitude information of inertial navigation to industrial computer through control box;Rear end prism is installed on the tunnel wall, total station is installed between inertial navigation and rear end prism, and the coordinate information of inertial navigation under total station coordinate system is measured by aiming at prism;Data exchange is carried out between radio and total station according to internal protocol, and the data of total station is sent to industrial computer;Industrial computer is connected with radio and control box by cable, and based on the measurement information of collected inertial navigation, total station carries out coordinate transformation, calculates the deviation of reference point and design standard route of shield machine, and the trend of shield machine excavation.The present application has high real-time measurement, strong environmental adaptability and better maintainability.

The invention relates to the technical field of coal mine intelligent tunneling, and discloses an intelligent automatic coal digging tunneling guiding and deviation rectifying device which comprises a rack fixedly connected to a machine body of a tunneling machine through bolts; a bevel gear differential mechanism deviation rectifying mechanism comprises a differential mechanism shell, a driving bevel gear, a driven bevel gear, two half-shaft bevel gears and two planet bevel gears. The eccentric detection wheel set comprises two detection wheels, a connecting cross beam, an eccentric measuring rod, a brake control pull rod and a pendulum bob; the differential control mechanism comprises two brake drums, two brake belts and a bidirectional control cam; the output synthesis mechanism comprises two bevel gears and an intermediate shaft, the two bevel gears are connected to the outer ends of the two output shafts through bevel gear transmission mechanisms respectively, and the intermediate shaft is supported in a bearing seat of the rack through a bearing; according to the invention, automatic deviation correction control of the tunneling direction is realized, the problem of failure of the laser orientation instrument in a dust environment is solved, the problem of high energy consumption is solved, and automatic adjustment of the tunneling direction is realized.

The tunnel boring machine has a sealing device (212) having a first inner chamber (369) and a second inner chamber (372) to which lubricant can be applied via a fluid supply device. The pressure in the first inner chamber (369) can be regulated via the fluid supply device such that the pressure is between the pressure in the head chamber (306) located in front of the first inner chamber (369) along the tunneling direction and the pressure in the second inner chamber (372) located behind the first inner chamber (369) along the tunneling direction. Therefore, for environmental protection reasons, lossless lubrication can be achieved, and mixing of the lubricant in the first inner chamber (369) with other substances in the head chamber (306) is avoided.

The utility model relates to the technical field of engineering machinery, and provides a digging and anchoring all-in-one machine. The cutting mechanism is arranged at the front end of the rack; the anchor rod mechanism is arranged on the rack; the first visual mechanism is arranged at the front end of the rack and is used for acquiring the front visual field in the tunneling direction; the second visual angle mechanism is arranged on the side face and the rear end of the rack. According to the digging and anchoring all-in-one machine, basic function modules such as the cutting mechanism and the anchor rod mechanism are integrated, the first visual mechanism is arranged at the front end of the machine frame of the digging and anchoring all-in-one machine, the visual field in front of the digging direction can be visually obtained, and direct visual reference is provided for operators; meanwhile, the second visual mechanisms are additionally arranged on the side face and the rear end of the machine frame, the monitoring range is further expanded, blind areas on the side face and the rear portion of the tunneling device are covered, and safety accidents caused by sight blocking or negligence are effectively avoided.

The invention belongs to the technical field of tunnel construction, and particularly relates to a laser-controlled tunnel back break directional guiding device and a using method.The laser-controlled tunnel back break directional guiding device comprises an electric telescopic rod, the outer surface of the lower end of the electric telescopic rod is fixedly connected with a fixing ring, the upper end of the electric telescopic rod is rotationally connected with a base, and a positioning plate is arranged below the base; the outer side face of the positioning plate is rotationally connected with connecting rods in an array mode. According to the guiding device, through cooperative work of the high-precision angle encoder integrated by the total station and the horizontally-arranged laser range finder, annular scanning and data collection of the tunnel face can be rapidly completed, an actual form digital model is constructed through coordinate conversion operation of the controller, the efficiency of data collection and deviation judgment is greatly improved, and the working efficiency is improved. In addition, the design contour and the deviation area can be visually presented through laser projection, constructors are helped to accurately control the tunneling direction, overexcavation waste and undercut rework are effectively reduced, the construction cost is reduced, and the tunnel construction quality and progress are improved.

The invention discloses a tunnel intersection fixed-point tunneling device, and relates to the technical field of tunnel engineering, the tunnel intersection fixed-point tunneling device comprises a tunneling machine, a laser emitting device and a laser receiver, the laser emitting device is used for being fixedly installed at the center of a roadway intersection, and the laser receiver is installed on the tunneling machine; the laser receiver captures the light spot position deviation of the laser emitting device in real time, a deviation correction instruction is generated through a control platform of the heading machine, the heading machine is controlled to steer through a driving system of the heading machine, and it is ensured that the heading direction is accurately aligned with a target roadway.

The invention disclosed herein relates to a module (10) for a humidifier (50) of a fuel cell system (100), wherein a dry side (11) has a tunnel structure (14, 15) for guiding a dry gas in a tunnel direction (T1) through the module (10), wherein a moist side (12) has a plate-shaped guide structure (16), wherein the guide structure (16) has a series of adjacent inlet holes (19) for guiding the moist gas into the module (10) and a series of adjacent outlet holes (20) for guiding the moist gas out of the module (10), wherein the guide structure (16) has upper guide ribs (21) arranged adjacent to one another and lower guide ribs (22) arranged adjacent to one another for guiding the moist gas in a guide direction (L1) from the inlet holes (19) to the has outlet holes (20),wherein the upper guide ribs (21) are spaced apart from and positioned above the lower guide ribs (22), and wherein the tunnel structure (14, 15) extends in the tunnel direction (T1) transversely to the guide direction (L1) and is positioned between the superimposed upper guide ribs (21) and lower guide ribs (22). The invention further relates to a plate half (23, 24) and a method for manufacturing the module (10) as well as a humidifier (50) with several modules (10).

The invention discloses a tunnel monitoring emergency support system with an optical fiber auxiliary rechecking function, which comprises a plurality of support lagging jacks, a sensor group chain and distributed optical fiber sensors, the support lagging jacks are arranged in parallel along the tunneling direction of a tunnel, and a plurality of emergency support units are arranged on the support lagging jacks; emergency supporting can be performed on tunnel surrounding rock through the emergency supporting unit, the sensor group chain is arranged according to the shape of a tunnel section and used for monitoring the state of the tunnel surrounding rock and triggering an alarm according to the state of the surrounding rock, and the distributed optical fiber sensor is used for rechecking the triggering position of the sensor group chain. According to the monitoring and supporting system, a sensor and physical triggering dual-mode monitoring mode is adopted, the distributed optical fiber sensors are arranged for auxiliary verification and rechecking, meanwhile, the supporting arch frame is linked for emergency supporting, and the monitoring and supporting system which is quick in response, high in reliability and capable of achieving self-adaptive linkage is formed.