89 results about "Underground tunnel" patented technology

A system for sealing prefabricated facilities or underground facilities may allow for the sealing and pressurizing of parts or all of an underground facility or enclosed facility via a plurality of sealable doors or prefabricated modules. The system may implement mechanical connections between walls or extensions of individual modules. The system may implement complementary mechanical connections or partially complementary mechanical connections between individual modules and may further include module interior or module exterior sealing layers for rigid layers. The system may implement mechanical connections between individual modules wherein each of the mechanical connections may utilize sealing complementary profiles constructed and arranged to provide for an airtight seal between modules. The system may be used to link surface facilities to underground facilities, tunnels or shafts, or to pressurize sections of tunnels or shafts. The system may be used to stabilize pressurized facilities from back-blast due to evacuation of said tunnels or shafts. The system may be used to construct pressurized surface habitats independent of, or linked to underground tunnels or facilities. The system may further be used to construct space platforms or space stations.

The application provides a method for grading the quality of altered rock mass of underground tunnels, and relates to the technical field of rock mass grading. The method comprises the following steps: obtaining the Q value of the rock mass through the Q system grading method; defining the first index corresponding to the alteration degree, the second index corresponding to the position relationship between the altered rock mass and the tunnel, and the third index corresponding to the groundwater outcrop condition; calculating the product of the first index, the second index, the third index and the Q value to obtain the corrected Q value; and grading the quality of the altered rock mass according to the corrected Q value. In this way, the alteration degree of the altered rock mass, the position relationship between the altered rock mass and the tunnel, and the influence of the groundwater on the altered rock mass are all taken into account, so that the grading of the altered rock mass according to the corrected Q value is more accurate, and the problem of deviation in the grading of the altered rock mass according to the existing Q system grading method is solved. The application is suitable for grading the quality of altered rock mass of underground tunnels.

This invention relates to the field of underground tunnel support technology, specifically to an underground tunnel support device. It includes two symmetrical bases, each with multiple fixed columns fixed to its upper surface. Each base has multiple casters at its lower end along its travel direction. A support plate is fixedly connected to the upper ends of the multiple fixed columns on its lower surface. A support plate is positioned above the support plate. The support plate has a drive assembly that, through two connecting components, drives the multiple casters to extend into or out of the corresponding base's first cavity. Simultaneously, the drive assembly, through two transmission components, drives the support plate to move in the same direction as the casters. When the casters or support plate complete their movement, a switching component stops the movement of the completed casters and continues the movement of the uncompleted casters until the movement is complete. This invention has advantages such as simplified operation steps, reduced risk of manual intervention, and improved safety and reliability of support operations.

This invention relates to a method for underground tunnel pipe jacking construction using a propulsion sleeve with fluid injection to reduce resistance. The method involves three steps: First, under the excavation of a jacking machine and the jacking action of a horizontal jacking mechanism, two pipe sections are advanced through the starting shaft until the rear section is inserted into the ground to a predetermined depth. Second, the propulsion sleeve of the front section is opened and filled with water. Third, the two pipe sections are then joined together. This third step is repeated until the pipe jacking machine reaches the receiving shaft. This invention aims to achieve the advantage of low resistance during propulsion, solving the problem of high resistance during propulsion in existing pipe jacking construction methods.

The invention relates to the technical field of TBM equipment, and discloses a pumped storage power station underground cavity TBM applicability evaluation method, which comprises the following steps: S1, firstly carding an existing framework of pumped storage power station underground cavity TBM applicability evaluation, and defining core technical elements and a protection range of the framework; an evaluation framework of non-AHP driving, dynamic multi-source data fusion and machine learning enabling is provided. According to the method, an evaluation framework of non-AHP driving, dynamic multi-source data fusion and machine learning enabling is provided, an index system is constructed, the index system is divided into static indexes (in a design stage, cavern burial depth, surrounding rock category and turning radius) and dynamic indexes (in a construction stage, TBM attitude error, cutter wear rate, surrounding rock deformation rate and ventilation efficiency), a real-time monitoring system is integrated, and the dynamic index is divided into a dynamic index and a dynamic index; and data such as TBM attitude, cutter wear and surrounding rock deformation are input into the model in real time, and the applicability score is dynamically updated, so that the method has the advantages of high pertinence, comprehensive index system and the like.

This invention belongs to the field of ventilation and purification technology in tunnel construction, and particularly relates to an integrated dust removal system during underground tunnel blasting construction. The system includes: a ventilation module, an air purification device, a gas sensor, a controller, and a power supply mechanism. The power supply mechanism includes a generator and an energy storage unit, as well as a municipal power grid, a solar power generation module, a compressed air energy storage module, and a geothermal power generation module connected to the generator and energy storage unit. The geothermal power generation module uses a supercritical CO₂ fluid and methanol heat exchange cycle to drive a turbine to generate electricity. The compressed air energy storage module stores energy during off-peak electricity consumption and releases energy to generate electricity during peak electricity consumption. The air purification device has a filter screen and a filter element sequentially installed at the air inlet, and a multi-stage liquid filtration assembly sequentially filled with washing liquid. Another filter element is installed at the exhaust end. The controller automatically adjusts the operating power of the ventilation module and the air purification device based on the gas sensor detection signal.

The present application belongs to the technical field of power quality treatment of coal mine underground tunneling machine equipment, discloses a power quality treatment device and operation method of coal mine underground tunneling machine equipment, which comprises a treatment module, a current transformer and a control module, the treatment module comprises a T-type three-level module and an LCL three-order filter module, the treatment module is connected in parallel with the tunneling machine power cable, and the power level is matched with the peak power during the tunneling machine operation; the current transformer is arranged at the three-phase power input end of the tunneling machine; and the control module is used for controlling the treatment module to switch between the pure reactive power compensation mode and the reactive power and harmonic simultaneous compensation mode. The present application reduces the displacement capacity, improves the adaptability of the tunneling machine equipment to the underground power grid, and saves energy and reduces consumption.

The utility model discloses an underground tunnel rail top air duct structure, including air duct bottom plate and two air duct side walls, two air duct side walls and tunnel roof board integrative pouring formation and opposite arrangement are personally experienced sth, the bottom of air duct side wall is equipped with a plurality of length direction interval arrangement's transverse perforation, air duct bottom plate is the prefabricated part, the both sides of air duct bottom plate all are equipped with a plurality of length direction interval arrangement's screw hole, the screw hole of air duct bottom plate both sides and two air duct side walls's transverse perforation one to one corresponding arrangement, and corresponding transverse perforation and screw hole are connected through fixed bolt. The whole construction installation of this underground tunnel rail top air duct structure is convenient, and construction efficiency is high.

The underground TBM operating line cooling device comprises a cooling shell, the cooling shell comprises a first cooling plate and a plurality of second cooling plates which are arranged below the first cooling plate in an up-down stacked mode, the two sides of the first cooling plate are vertically and fixedly connected with stand columns, the lower portions of the stand columns are fixed to corresponding bases, booster water pumps are further installed on the bases, and the booster water pumps are connected with the second cooling plates. A water inlet of the booster pump communicates with an external water source; the lower-layer cooling plate is slidably mounted on the bottom surface of the upper-layer cooling plate; each of the first cooling plate and the second cooling plate is an arc-shaped plate with one sealed end and a hollow interior, a heat dissipation net plate is arranged in an inner cavity of each arc-shaped plate, a water supply channel is arranged in each cavity, and water distribution holes are formed in the water supply channels; the water supply channel communicates with a water outlet of the booster pump; and an air inlet and a water outlet are formed in the arc-shaped plate. According to the device, the temperature of the working environment in the underground tunnel can be effectively reduced, the area of a cooling area can be effectively adjusted according to the working range of workers, and then the working environment of the workers is effectively improved.

The invention discloses a blasting method for locally weakening hard rock on an underground coal mine driving working face by using a water exploring hole, and belongs to the technical field of underground coal mine roadway driving engineering. The method comprises the following steps: identifying and confirming a constructed water exploring hole on a tunneling working face as a blasting empty hole; a plurality of blast hole sets are arranged in the circumferential direction of the empty hole with the empty hole as the center datum, and different distances are formed between the blast hole sets and the empty hole; the blast holes in the blast hole group are filled with explosives and provided with detonators, the detonating sections of the detonating sections are determined based on the distance between the detonating sections and the empty holes, and a sequential detonating mechanism from inside to outside is formed; all the detonators are connected into a detonating network in parallel for blasting, the free face is changed from small to large by means of the detonating interval time of the detonators in different sections, and hard rock weakening is finally achieved by combining the stress wave superposition effect. According to the method, the existing water exploring hole in the underground coal mine is creatively used as the blasting empty hole, and the hard rock weakening effect is remarkably improved in combination with the optimized blast hole arrangement and the segmented detonation technology.

1. Name of the product in this design: Underground tunnel construction vehicle. 2. Application of this design: for the installation and dismantling of pipelines in tunnels, material recycling, and short-distance material transportation. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application provides an underground tunnel crack repairing intelligent drilling device, a mechanical arm and a method, relates to the field of underground intelligent repairing equipment, and aims to solve the problems of low intelligence degree and easy damage of a detection assembly caused by drilling impact during drilling of a crack in an underground project. A matched detection assembly is arranged on a drilling assembly, crack state parameters can be collected during drilling, and auxiliary positioning can be performed. The detection assembly is installed on a support plate through a sliding pair with a resilient piece. When vibration occurs during construction, part of the vibration can be absorbed by the resilient piece. The direction of action of the resilient piece is consistent with the drilling direction, so that the impact effect generated during drilling is improved, and the detection equipment is protected.

The utility model discloses a mine engineering underground supporting device which comprises a supporting beam, the supporting beam comprises an arm guard outer frame and a supporting arm, the arm guard outer frame and the supporting arm are both in an arc shape, arc-shaped guide grooves are formed in the two sides of the arm guard outer frame, arc-shaped sliding blocks limited in the arc-shaped guide grooves in a sliding mode are fixed to the two sides of the supporting arm, and the arc-shaped sliding blocks are arranged in the arc-shaped guide grooves in a sliding mode. The protective arm outer frame and the supporting arm can slide in a staggered mode according to the top of an underground tunnel, and side supporting assemblies supported on the two side walls of the underground tunnel are arranged at the two ends of the protective arm outer frame and the two ends of the supporting arm correspondingly. The protection arm outer frame and the supporting arm are matched through the arc-shaped guide groove and the sliding block, the supporting beam is allowed to slide along an arc-shaped track when staggered and can be attached to the top of a tunnel, the problem that a traditional rigid supporting device is prone to fracture due to stress concentration is solved, adaptability and safety of the device are improved, and the supporting device is suitable for large-scale popularization and application. And a three-dimensional stable system is formed by the cone thorns, the clamping teeth and the bottom plate, surrounding rock deformation and impact loads are effectively resisted, and the roof fall risk is reduced.

This invention discloses a support structure for underground tunnel construction, including an outer lining layer. Grouting anchors are spaced apart on the outer lining layer, and each grouting anchor is fixed with a branch pipe at an incline. The branch pipes are internally connected to the grouting anchors. An inner lining layer is also provided inside the outer lining layer, with a gap between the outer and inner lining layers. This invention, through the arrangement of the branch pipes, allows drainage to be collected within the gaps, and the inlet pipe of the drainage pump can be inserted into the drainage hole at the bottom for centralized discharge, enhancing the convenience of drainage during construction. Furthermore, it reduces water accumulation within the tunnel, improving the construction environment. After drainage of weak surrounding rock, it facilitates subsequent grouting bonding, enhancing the stability of subsequent grouting. The inner lining layer also incorporates the branch pipes within the gaps, creating a triangular support mechanism between the inclined branch pipes and the grouting anchors, strengthening the structural strength between the outer lining layer, the grouting anchors, and the inner lining layer.

The invention relates to the technical field of underground tunnel engineering construction, in particular to a construction method and device for resisting shrinkage cracking of tunnel wall concrete. The construction method comprises the steps that S1, before wall concrete is poured, prestressed tendons are evenly distributed in a wall; s2, the prestressed tendons are subjected to graded tensioning for m times, m is larger than or equal to 2, the tensioning force of each time of tensioning is 0.15 sigmacon < = 0.5 sigmacon, and sigmacon is tensioning control stress; and S3, wall concrete pouring and curing are conducted, the concrete strength and the shrinkage strain value are monitored during curing, when the concrete strength reaches 30% or above of the design strength and the shrinkage strain value is larger than or equal to 50 mu epsilon, the prestressed tendons are released in a grading mode, and the releasing stress of each grade is smaller than or equal to 0.5 sigmacon. According to the method, cooperative control of graded tensioning and graded releasing is carried out in the wall concrete, so that the concrete keeps reasonable pre-compressive stress in each hardening stage, the tensile stress generated by shrinkage is counteracted, cracks of the wall are avoided, and the structural integrity of the tunnel wall is guaranteed.

The application belongs to the technical field of underground tunnel construction equipment, and specifically provides a main driving sealing system of a tunneling machine and a main driving of the tunneling machine, which comprises a first sealing structure, a second sealing structure and a control oil circuit; the first sealing structure comprises a first sealing body, a first sealing support ring and a first displacement assembly; the second sealing structure comprises a second sealing body, a second sealing support ring and a second displacement assembly; the control oil circuit comprises a first control circuit for being connected with the first sealing structure, a second control circuit for being connected with the second sealing structure and a multi-point pump connected with the first control circuit and the second control circuit simultaneously. The first displacement assembly is arranged in the first sealing structure to drive the first sealing body to displace, and the second displacement assembly is arranged in the second sealing structure to drive the second sealing body to displace, so as to skillfully avoid the worn groove of the seal; and the control oil circuit is arranged to realize self-adaptive adjustment of the first sealing body and the second sealing body.

An underground tunnel comprises a container receiving pit and a container stacking pit, a chute matched with the container receiving pit is formed in a foundation, a container comprises a box body, a tail door and a cover plate assembly, the tail door is arranged at one end of the box body, a feeding port is formed in the top of the box body, and a discharging port is formed in the bottom of the box body. The box body is provided with a socket with a jack, a guide rail matched with the feed port is fixed on the box body, the cover plate assembly comprises a cover plate and a lock matched with the jack on the socket, the cover plate is in clearance fit with the guide rail, and the lock is respectively connected with the socket and the cover plate; the tunnel further comprises a containing cavity matched with the container receiving pit, an unlocking driving assembly used for releasing connection between the lock and the socket and driving the cover plate to move horizontally along the guide rail is arranged in the containing cavity, and the unlocking driving assembly is fixed to the foundation. Construction waste is collected and stored in a centralized mode, the transfer efficiency can be improved, and the transportation cost can be reduced.

This invention relates to the field of underground tunnel support technology, and discloses a support structure for intersecting tunnels, including a fully enclosed steel arch frame (1) and anchor cable locks (5). The fully enclosed steel arch frame (1) includes a top arch (101), side pillars (102) connected to both ends of the top arch (101), a bottom arch connecting bracket (104) set on the middle and lower areas of the side pillars (102), and a bottom arch (103) connected to the bottom arch connecting bracket (104). The top arch (101), some of the side pillars (102), the bottom arch connecting bracket (104), and the bottom arch (103) can enclose and form a closed steel arch frame, and the side pillars (102) extending downward from the bottom arch connecting bracket (104) can be connected to the support leg foundation (2). This invention also discloses a construction method for the support structure of intersecting tunnels. The forming method of this invention is convenient to operate and has good performance.

This invention provides a box-type shovel and haulage system for underground tunnel repair. The box-type bucket includes a top plate, a bottom plate, a left side plate, and a right side plate. The connecting main frame also includes a top plate, a bottom plate, a left side plate, and a right side plate. The top plate of the box-type bucket and the top plate of the connecting main frame are rotatably connected via a rotating shaft, as are the bottom plate of the box-type bucket and the bottom plate of the connecting main frame. Left and right swing cylinders are symmetrically arranged on the left and right sides of the rotating shaft, with their ends rotatably connected to the box-type bucket and the connecting main frame, respectively. The unloading plate is located inside the box-type bucket, with its upper, lower, left, and right edges slidably connected to the top, bottom, left, and right sides of the box-type bucket, respectively. The two ends of the unloading cylinder are connected to the connecting main frame and the unloading plate, respectively. This box-type shovel and haulage system effectively solves the problems of limited space during corner construction and unloading difficulties in narrow underground coal mine tunnels.

The invention discloses an underground pumped storage system based on abandoned mine underground space reconstruction. The system comprises an underground reservoir formed by a newly-built underground space, an overground reservoir, a rock-soil backfilling structure, a water delivery system and a cable channel which are built between the overground and the underground by means of abandoned vertical shafts (or inclined shafts), and an underground powerhouse built by means of abandoned underground roadways. The underground reservoir is of a concentric circle structure or an array structure, the construction working face is increased, the volume of the underground reservoir under the same occupied area condition is increased, and the connectivity of the underground tunnel reservoir is improved. According to the method, the problems of high rock-soil outward transportation cost and poor goaf stability of a newly-built underground space are solved, efficient integration of abandoned mine repair, resource utilization and pumped storage is achieved, the construction cost is reduced, the construction efficiency is improved, and the geological safety is improved.

The embodiment of the application discloses a high-pressure underground tunnel grouting method. The method comprises the following steps: embedding a grouting pipe in a to-be-grouted hole; pouring quick-drying cement into an orifice section of the to-be-grouted hole through the grouting pipe; combining the quick-drying cement with the characteristics of quick lumping, the method can form a sealing layer at the orifice of the to-be-grouted hole under high pressure, thereby providing conditions for subsequent grouting; pouring mortar with expansibility and water absorption into a closed section of the to-be-grouted hole through the grouting pipe; the quick-drying cement has the advantage of quick lumping, but cracks will be generated in the drying shrinkage process; if direct chemical slurry filling is performed, the slurry will exude and other problems will occur; therefore, the closed section is additionally arranged below the orifice section, and the mortar with expansibility and water absorption is poured into the closed section; and the to-be-grouted slurry is poured into a grouting section of the to-be-grouted hole through the grouting pipe. The step should be performed after the hardness of the mortar in the closed section reaches a required threshold value, at which time the cement or mortar in the orifice section and the closed section ensures that the to-be-grouted slurry does not exude.

An apparatus, rock drilling rig and drilling method is provided. The apparatus provides position control data for controlling positioning a rock drilling unit of a rock drilling rig arranged for drilling transverse drill hole patterns in an underground tunnel. The apparatus includes a teaching feature for gathering data on manually controlled movements at the location of the drill hole pattern and to thereby detect a movement path, which is collision free. The data on the taught collision free movement path is implemented when controlling the rock drilling unit during an actual drilling phase.

1. The name of the design product: underground shovel. 2. The use of the design product: used for loading and carrying loose materials in underground tunnels. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1. 5. The bottom of the design product is not easily visible or not visible during use, and the top view is omitted.

The application discloses a 360-degree omnidirectional live mouse capturing device suitable for ground and underground tunnels, which comprises a base, a mouse cage, a cage lifting device, a driving device, a triggering device and a power storage device. The base is of an open structure around the periphery, forming a 360-degree omnidirectional entrance, and mice can enter from any direction; the mouse cage and the base of the application adopt an up-down lifting and buckling mode, the overall volume is small, and the device can be simultaneously suitable for ground mouse catching and underground narrow mouse tunnel catching. The driving device synchronously drives the cage lifting device and the power storage device to act, lifts the mouse cage and completes power storage; after the triggering device is stepped on, the power storage device releases power to make the mouse cage quickly fall and buckle, and live capturing is realized. The application solves the problems of single entrance, low capturing efficiency, ground use only and inadaptability to underground mouse tunnels of the prior art, and has the characteristics of strong universality, sensitive triggering, high mouse catching probability and wide application scenarios.

The application relates to the technical field of underground tunneling space construction, and discloses a kind of underground tunneling space stability monitoring method and monitoring system, the monitoring method comprises: obtaining the deformation allowable value S y , the accumulated convergence deformation amount S x of similar rock mass before instability, the ultimate tensile value F L of anchor rod / anchor cable in rock mass;Continuously detect the convergence deformation amount S m of rock mass, the longitudinal wave transmission speed V n of rock mass, the tension value F i of anchor rod / anchor cable, wherein m, n, i are all natural numbers greater than 0;Calculate the convergence deformation early warning value S J of rock mass, the tensile early warning value F J of anchor rod / anchor cable, the convergence deformation early warning coefficient K s of rock mass, the tension change rate K F of anchor rod / anchor cable, the wave speed early warning coefficient K v of rock mass;When S m >1.25S J Or K S >1.2, or K v <0.7 and V n <2.5km / s, or F i =0 or K F >=1.2, output the information of rock mass instability.The monitoring method can detect the stability of underground tunneling space, especially the stability near the position of blasting surface, and further guarantee the construction safety.

The utility model provides an underground roadway space measuring device based on Beidou positioning and orientation, which comprises a centering rod, the top of the centering rod is fixedly provided with a circular level bubble, and the bottom of the centering rod is supported on an underground roadway; the Beidou positioning and orientation module is arranged at the top of the centering rod and comprises a compass and a Beidou GNSS receiver; the data acquisition module is arranged at the bottom of the centering rod and above the water surface in the underground roadway and comprises an underground searchlight, a visible light camera, a range finder and a handheld SLAM scanner, and all the devices are coaxial with a compass; and the telescopic centering supporting rods are provided with three-stage telescopic structures, are arranged in the middle of the centering rod and are supported on the foundation, and the three telescopic centering supporting rods are arranged with the centering rod as the center. The underground roadway space measurement device based on Beidou positioning and orientation can obtain space measurement data and visible light camera videos, and realizes high-precision underground roadway three-dimensional space measurement.

The invention relates to the technical field of inspection robots, in particular to an underground cable tunnel inspection robot which comprises a track body, a guide wheel and a driving wheel are arranged at the top end of the robot body and abut against different side walls of the track body respectively, and the driving wheel is fixedly connected with the output end of a driving motor. According to the invention, the problem that the analysis of detection data is interfered because the inspection robot acts reversely and repeatedly detects a certain position for multiple times due to the fact that a slipping line is easy to generate when the inspection robot is on an uphill and downhill road section of an underground tunnel can be avoided; the high reliability and low failure rate of gear and rack meshing transmission ensure that the robot can realize 24-hour uninterrupted inspection, and by combining a data real-time return function, the automation level of tunnel operation and maintenance is greatly improved, manual intervention is reduced, and the robot is particularly suitable for long-distance and high-risk underground cable tunnel scenes.

The utility model relates to the technical field of tunnel engineering construction, in particular to a steel mould for secondary lining construction of a non-rectangular small-section underground excavation channel, which comprises a device body, a transverse support component is transversely mounted on the inner side of the device body, and a disc buckle frame component is longitudinally mounted on the inner side of the device body. According to the improved steel die, the first sealing gasket and the second sealing gasket are firmly pressed through the first limiting rod and the second limiting rod, sealing can be effectively conducted, and the sealing effect after installation is completed is guaranteed. Through the arrangement of the first limiting groove and the second limiting groove, the positioning and guiding effects can be achieved on the installation of the side mold and the top mold, so that the installation efficiency is improved, and the situation of position deviation in the installation process is effectively avoided; and the corresponding supporting effect can be effectively achieved through the supporting pieces, and the situation that the side mold topples over is avoided.

The invention discloses an active control and collaborative support construction method for an inclined shaft open channel-hidden tunnel junction section, and belongs to the technical field of mine and tunnel engineering construction. The method sequentially comprises the following steps that guniting protection is conducted on an open channel excavation upward slope, and a surface stress closed shell is formed; an advanced pipe shed is constructed on the arch portion of the hidden tunnel, grouting is conducted, and a deep pressure-bearing arch and a composite stress shell are formed; mechanical excavation is conducted under protection of the composite pre-supporting system, and a U-shaped steel retractable support is immediately erected to serve as a temporary support; a reinforced concrete permanent well wall is constructed on the inner side of the temporary support; and finally, wall back grouting backfilling reinforcement is carried out, and a full-ring closed three-dimensional waterproof and drainage system is formed. The core of the method lies in that a linked active control and collaborative supporting system is constructed, and the industrial problems that surrounding rock of the light and shade junction section is poor in stability and prone to collapse and water seepage are effectively solved through temporary and permanent supporting conversion combining composite pre-supporting, yielding and pressure resistance and three-dimensional water prevention; and the construction safety and the engineering quality are obviously improved.