753 results about "Underground tunnel" patented technology

The invention discloses an underground space high-precision positioning method based on laser scanning and sequence encoded graphics. Aiming at the rapid high-precision positioning, orientation, altitude determination and navigation of moving targets in a GPS signal-free underground well of a mine, the method can make the breakthrough in key directions from the design, decoding and optimized layout of the encoded graphics, the economical and rapid acquisition of a fine and accurate road network-a three-dimensional well network space model consisting of underground tunnels of mine, a high-precision positioning algorithm of the moving targets in well restraint spaces (precise resolving of position, direction, altitude parameters), a three-dimensional well network space matching algorithm, athree-dimensional navigation technology to a final navigation platform and terminal control system, and the like, thus key technologies for underground rapid high-precision positioning and navigationas well as software and hardware systems are formed to eventually achieve the leaping-development of a underground unmanned mining technology for the mine in our country. Besides, the method disclosed in the invention can also meet the application demands of large urban underground space, deep and long traffic tunnel, large grotto, large building interior, large overpass and subway space on the rapid high-precision positioning and navigation of the moving targets, thereby pushing forward the development of the underground space positioning technology in our country.

The invention relates to a hollow-hole rhombic parallel cut blasting damping method. Blasting tunneling is performed on the tunnel face of an underground tunnel. The construction method comprises using a down-the-hole drill to drill a hollow hole with the diameter of 90mm to 180mm at the position of the middle of the tunnel face of the tunnel; using a hammerdrill to drill a plurality of blast holes, enabling the blast holes to comprise cut holes, auxiliary holes, periphery holes and base plate holes which are expanded around the hollow hole; filling explosives and detonators, using stemming to seal the blast holes, adopting rock emulsion explosives, and using ordinary millisecond nonel detonators or high-precison millisecond nonel detonators; and detonating the explosives according to blast hole arranging orders and detonator delay time. The hollow-hole rhombic parallel cut blasting damping method has the advantages that when an urban subway underneath passes buildings at a close range in a granite stratum and old resident houses, the blast vibration speed can be effectively controlled, influences of blast vibration on the buildings and life of residents are reduced, and compared with a traditional wedge cut blasting scheme, the hollow-hole rhombic parallel cut blasting damping method enables the maximum blasting vibration speed to be reduced by 50%.

The invention discloses a method for controlling distortion for deep large diameter shield tunnels to under-pass small diameter tunnels, which pertains to the technical field of tunnel engineering. According to the method, the control range of the stratum loss ratio of newly established tunnels and the optimum value of the support pressure of the shield cut surface are acquired by using the finite-element method; soil pressure in front of the shield cut surface is kept relatively balanced by setting the optimal value of the support pressure, and the support pressure fluctuation range of the cut surface is controlled to range from minus 10kPa to plus 10kPa; the stratum loss ratio of the newly established tunnels is controlled within the allowed range. According to the construction technique measures, a test propelling area is arranged before the shield reaches a cross position. In the area, construction is carried out according to the situation of the existing underground tunnels above; and construction parameters are controlled and regulated to adjust the support pressure, the propulsive velocity and the amount of the grout to be injected in time; the shield passes through the cross position in combination with the optimal values of the construction parameters of the test propelling area. The invention can not only ensure the construction of tunnels to be carried out safely and smoothly, but also minimize the influence of construction on ambient environment.

The invention discloses a method of underground scooptram autonomous travel, obstacle avoidance motion control and target path planning. Firstly a main target path is planned according to underground tunnel conditions. Then a local obstacle avoidance target path which is attached on the main target path is planned, main target path data, an initial point, a termination point and offset distance data relative to the main target path of the local obstacle avoidance target path are stored in a scooptram controller. A transverse position deviation, a course angle deviation and a course angle deviation change rate are calculated through measuring data of a measuring system or a track prediction model, the three deviations form comprehensive deviation feedback signals through a fusion rule, the comprehensive deviation feedback signals serve as the input quantity of proportion integration differentiation (PID) corrective control, a control command is input to an electric-hydraulic proportional steering control system of the scooptram, a vehicle is driven to steer and track the target path, underground scooptram autonomous navigation and the obstacle avoidance motion control are achieved, and the method is convenient to use, flexible and reliable.

The invention relates to an underground high-precision navigation map establishment system and an establishment method. On the basis of the system comprising an underground geographic information system, an intrinsically safe modeling device and each intrinsically safe ultra wide band (UWB) anchor node which is set in each underground tunnel, the establishment method is further designed and introduced. According to the whole design, an underground high-precision navigation map can be rapidly established, environment model functions can be dynamically updated, a modeling result is input into the underground geographic information system, and a multilayer map model capable of providing auxiliary positioning and route planning for automatic movement of vehicles underground is established.

The invention discloses a processing method of waste well impoundment, which is characterized by the following: elevating well water to the ground through pump; injecting into path below well through drug pond with oxidizer, neutralizer and flocculant; removing oil, iron and acid; circulating water partially; filtering; proceeding electric dialysis; sterilizing; fitting for agriculture, industry and living water grade by grade.

The invention relates to an integrated device for separating gas, water and slag. The device comprises a methane gas and dust collector, a methane gas drainage gas, water and slag separator, a methane gas drainage pipe, a high-pressure pipeline component, a first pipeline component, and a second pipeline component, wherein the methane gas and dust collector is used for collecting gas, water and slag mixture which is obtained through fully mixing methane gas and dust jetted from drill holes through using water; the first pipeline component is used for connecting the methane gas and dust collector and the methane gas drainage gas, water and slag separator and sending the gas, water and slag mixture fully mixed in the methane gas dust collector to the methane gas drainage gas, water and slag separator; and the methane gas drainage gas, water and slag separator is used for separating the gas, water and slag mixture into gas, liquid, and solid. The invention has the benefit that methane gas, drill slag and dust which are jetted from the drill holes are prevented from entering into underground tunnels to cause over methane gas or continued work environmental deterioration.

The invention discloses a settlement control construction method for a transverse grouting guide pipe of a shallow underground excavation tunnel. The method includes: laying an advanced small pipe and a horizontal cantilever grouting guide pipe; excavating a middle guide tunnel by a benching tunneling construction method; constructing a middle separation wall and a waterproof layer thereof; and respectively excavating a left guide tunnel, a left tunnel, a right guide tunnel and a right tunnel by the benching tunneling construction method. By the aid of the settlement control construction method, an unconsolidated stratum layer can be effectively consolidated, the soil texture of an unconsolidated stratum is improved, and ground settlement and stratum deformation caused by shallow underground tunnel excavation in the unconsolidated stratum are prevented.

The invention relates to a construction method for an underground tunnel, in particular to a construction method for a river-crossing shield tunnel crushed stratum communication channel, which is used for solving the problems of failure of stratum reinforcement, long working period, high cost, poor quality and the like existing in the construction process of the conventional river-crossing shieldtunnel crushed stratum communication channel. The method comprises the following steps of: determining the position of the communication channel; before opening, performing pre-grouting to integrallyconsolidate broken rock outside the excavation outline of the communication channel; forming a high-strength waterproof curtain; before excavation, performing stress conversion; drilling and partitioning to remove a left line pipe sheet, brushing the top, performing tunnel excavation with a combined damping burst technology, and timbering; and drilling and partitioning to remove a right line pipesheet, brushing the top, and performing second lining construction by adopting a combination template. Due to the adoption of the construction method, water seepage is avoided after excavation, the technology is advanced, the blank of a communication channel pre-grouting technology is fulfilled, the working period is short, the mechanical degree is high, the process is simple, construction is environmentally-friendly, collapse is avoided, and over-excavation is greatly lowered; and the method has a wide application range.

The invention discloses a coal mine underground coal seam long drill hole staged fracturing permeability increase and gas extraction method. The coal mine underground coal seam long drill hole stagedfracturing permeability increase and gas extraction method comprises the steps that a long drill hole with the length more than 100m are drilled into a coal seam using a underground tunnel drilling machine for a coal mine or a kilometer drilling machine; a rigid casing with an one-way valve is lowered into to protect the hole directly using the underground tunnel drilling machine or the kilometerdrilling machine, and casing centralizers are installed at regular intervals; after the casing is lowered, preset volumetric cement paste is injected into an annular space between the outer wall of the casing and a drill hole wall to carry out blocking and sealing; a rigid fracturing pipe with two or multiple packers is lowered into the casing to carry out coal seam staged fracturing step by stepor multistage staged fracturing; and the fracturing pipe and the packers are removed after staged fracturing permeability increase, the casing of coal seam long drill hole opening is accessed with a gas extraction pipeline after drainage finishes to carry out efficient extraction of gas. The engineering amount of a tunnel and hole-drilling can be greatly reduced, the coal seam gas extraction efficiency is improved, and the coal mine underground gas treatment cost is reduced.

A cable rack arm and support system suitable for underground power and communication service is made from reinforced non-metallic polymers that will not rust or corrode. A cable rack arm up to thirty inches long may be compression molded with long glass fibers in a polyester or vinylester matrix. Each cable rack arm is securely mounted to a non-metallic stanchion that may be made from a reinforced, pultruded composite material. Nonmetallic pins may be used to secure the cable rack arms to the stanchions. Each cable rack arm then supports one or more cables in cable saddles that are snap-fit atop the arm, thus keeping the cables accessibly organized in a manhole, tunnel or vault. Each saddle may include elastomeric dampening material to reduce shock and vibration in the mechanical and electrical environment in underground tunnels, vaults and manholes.

The invention relates to a three-dimensional stress test device for a single-hole multi-point hollow fiber grating inclusion in rock mass engineering. The three-dimensional stress test device is mainly composed of two or more unit fiber grating cylindrical hollow inclusion stress gauges, rigid connection rods, centering supports, a wavelength demodulator and a computer. The unit fiber grating cylindrical hollow inclusion stress gauges are composed of epoxy resin hollow inclusion bodies, rigid connection end rings, fibers and gratings. The fibers are fixed into axial grooves, radial grooves and spiral grooves in the outer surfaces of the stress gauges in a wound mode. The test device is installed to a drill hole in a rock mass and coupled with the part, located on a drill hole wall, of the rock mass through slip casting fluid, so that testing of three-dimensional disturbance stress distribution and testing of the time-space evolution law of three-dimensional disturbance stress distribution in the rock mass engineering are achieved. As the fiber grating technology and the hollow inclusion technology are coupled, the test device is resistant to corrosion, groundwater interference and electromagnetic interference and high in test accuracy, has high adaptability to complicated geological and hydrological conditions in the rock mass engineering and can be widely applied to three-dimensional disturbance stress tests for underground tunnels and slope rock masses in water conservancy and hydropower engineering, mine engineering, traffic engineering and the like.

A high-strength confined concrete support system for an underground tunnel. The support system includes multiple confined concrete arches, bolts and cables, and a prestressed steel strand backfilling system. The confined concrete arches all support the surrounding rock of the tunnel and are sequentially arranged along the tunnel. Every two adjacent confined concrete arches are connected by a longitudinal connection structure. The support system is provided with a plurality of layers of steel bar meshes on the surrounding rock side and the tunnel side, and shotcrete layers are sprayed on the support system and the steel bar meshes. The prestressed steel strand backfilling system comprises a prestressed steel strand system and a filling material. The filling material fills the space between each confined concrete arch and the surrounding rock to equalize a load on the confined concrete arch and generate prestress.

The invention relates to an underground construction advanced detection method and system based on resistivity of multiple same source electrode arrays. The underground construction advanced detection method and system is suitable for detection of unfavorable geology in a borehole-blasting method of underground construction including tunnels or underground tunnels or the construction process of a tunnel boring machine (TBM). The underground construction advanced detection method comprises the steps of (1) constructing an array type measurement electrode system on a working surface; (2) forming a power supply electrode system on a side wall, and arranging the other power supply electrode B and measurement electrodes N to the position far away behind the working surface; (3) providing positive and negative current through a power supply electrode A positioned on the working surface and the power supply electrode B positioned far away behind the working surface, utilizing each of measurement electrodes M in the array type measurement electrode system to measure electric potential respectively, and obtaining the electric potential difference of the measurement electrodes M and the measurement electrodes N in the working surface and fracture surfaces, wherein the step is repeated continuously until the power supply electrode system moves to the preset position, and the detection is completed; (4) performing inversion on the measured electric potential difference data by adopting least square linear inversion iteration process based on smooth constraint to obtain three-dimensional resistivity images of a geologic body in front of the working surface.

The invention relates to a universal screen door linkage control system suitable for various wireless transmission modes, belonging to the technical field of rail transit signal safety control. The invention aims to overcome the defect of single wireless technology in the existing screen door linkage control system and simultaneously satisfy the large scale development of the urban rail transit. The system comprises a vehicle-mounted control subsystem, a double-network redundant wireless communication subsystem, a ground control subsystem and a screen door control subsystem. The whole screen door linkage control system is organically integrated through various wireless transmission modes of the double-network redundant wireless communication subsystem, and opening/closing control of the screen door is completed according to the command of the vehicle-mounted control subsystem. Aiming at different environments such as underground tunnels, overheads and the like in the urban rail transit, the corresponding wireless transmission modes are adopted to complete efficient and reliable transmission of the relevant information of screen door control. The technical scheme has the following beneficial effects: the communication modes are flexible and varied; and the economic cost is saved.

The invention relates to a convenient and smooth flyover crossroad traffic building without a traffic light, consisting of ground lanes, underground tunnels and ground flyovers. The ground roads are characterized in that straight lanes and right-turn lanes with separated direct and retrograde lanes are arranged at longitudinal crossroads, and right-turn lanes with separated direct and retrograde lanes are arranged at transverse crossroads. The underground tunnels are straight lanes with separated direct and retrograde lanes at the transverse crossroads. The ground flyovers consists of four left-turn overhead channels which are communicated with the left-turn lanes of the longitudinal crossroads and the left-turn lanes of the transverse crossroads, and the back of the opening faces to the crossroads. In the invention, the condition that automobiles from each direction can run on the own lanes can be realized without arranging the traffic light, and the automobiles can smoothly run straightly, turn left, turn right and take a U-turn. The invention has advantages of reasonable shunt, high traffic flow rate, simple and reasonable structure, low cost and convenient use.

The invention relates to a hierarchical summation method for predicting hob abrasion through abrasion ratio consumption indexes and belongs to the field of underground tunnel engineering construction technology. In order to quantitatively predict the hob abrasion at different hob positions when a shield tunneling machine drives into a compound stratum, statistical analysis is performed on the hob abrasion ratio consumption indexes SWIs (hob abrasion increments corresponding to unit rock-breaking volumes) at different positions according to stratigraphic classification on the basis of hob-by-hob measurement of the hob abrasion and hierarchical statistical analysis of corresponding rock-breaking volumes, and an SWI prediction equation suitable for homogeneous formations is obtained. The relation between the abrasion, the hob installing positions and a tunneling distance is considered at the same time in the SWIs, physical significance is clear, and the SWI prediction equation is high in prediction precision. The hierarchical summation method for predicting the hob abrasion through the abrasion ratio consumption indexes is proposed according to the correlation between SWI prediction equation coefficients and lithological characters. The method is based on engineering investigation data and is reasonable, the steps are clear, and the method is beneficial for scientifically making budgets, reasonably arranging hob replacement opportunities and improving shield tunneling efficiency and has important theoretical significance and practical value.

It is well known that tunnels in many cases have been proven as an efficient means to overcome counter trespassing means and enable hostile entities to infiltrate a boarder or other restricted area. There is provided a method and system for efficiently detecting and locating underground tunnels.

According to certain aspects, of the invention there is provided a system and method for detecting a suspected area, comprising an underground pipe array disposed substantially in horizontal orientation under the ground and including at least two pipes, the at least two pipes being disposed at different depths, at a predefined distance one with respect to the other, each of the at least two pipes creating an underground pathway infrastructure for accommodating at least one mobile vehicle; each one of the mobile vehicles being equipped with at least sensing and navigation devices for patrolling along a respective pipe, in a coordinated manner, for detecting a suspected area; the predefined distance is designed to be within an effective operational distance of the sensing and navigation devices; command and control, configured to control at least the mobile vehicles, gathering and processing the vehicles' data and creating an updated situation awareness picture of the underground medium.

The invention relates to a tunnel deformation evaluation and support design method and system based on three-dimensional geological information. The method includes the following steps that 1, three-dimensional geological information data is collected and summarized; 2, a regional three-dimensional geological model is constructed according to collected three-dimensional geological information data; 3, adit and borehole data is catalogued and investigated, and spatial distribution of initial stress and rock mass mechanical parameters of the region where a grotto structure is located through the three-dimensional space cube network DSI interpolation technology is obtained; 4, a tunnel geometric structure model is constructed in the three-dimensional geological model, and deformation of a specified tunnel section is calculated; 5, a support scheme is given according to the deformation, and a statistical summary result of engineering quantity is given out. An auxiliary project decision maker adjusts the arrangement and support schemes of an underground tunnel in time to achieve the purposes of safety construction and cost saving.

The invention relates to an imitative-ecological one-button factory breeding and domesticating method for frogs. A breeding water source, a breeding facility and ecological breeding are involved. The water source is composed of an underground tunnel water pool, a filtering pool, a heat preservation soil layer and a direct-current ultraviolet sterilizer; a breeding pool comprises a cuboid water pool which comprises two shallow water areas, a deep water area and a dirt depositing area, a cave is formed in one side corner of the pool bottom, a food platform is arranged on the cave, and an upper ramp and a lower ramp are arranged on the wide edge of the food platform. Inverted eaves are arranged above the pool wall, and a water inlet tap with the angle adjustable is arranged on the inverted eaves. No hormone is added for breeding, breeding frogs are soaked in 3% edible salt water for 15 min for disinfection when placed in the pool, and 5% salt water or quick lime water is splashed all over the pool for disinfection every 10 days-15 days in the thetadpole period, the froglet period and the mature frog period; at ordinary times, a medicine bag is made of Chinese gall, cordate houttuynia, common andrographis herbs and other Chinese herbal medicine and placed in the pool to prevent lesions and disinfect, the medicine bag is changed every 20 days; calculated according to the breeding pool of 0.48 m<3>, the medicine bag comprises, 20 g-50 g of the Chinese gall, 20 g-38 g of the cordate houttuynia and 20 g-35 g of the common andrographis herbs.

A cable rack arm and support system suitable for underground power and communication service is made from reinforced non-metallic polymers that will not rust or corrode. A cable rack arm up to thirty inches long may be compression molded with long glass fibers in a polyester or vinylester matrix. Each cable rack arm is securely mounted to a non-metallic stanchion that may be made from a reinforced, pultruded composite material. Nonmetallic pins may be used to secure the cable rack arms to the stanchions. Each cable rack arm then supports one or more cables in cable saddles that are snap-fit atop the arm, thus keeping the cables accessibly organized in a manhole, tunnel or vault. Each saddle may include elastomeric dampening material to reduce shock and vibration in the mechanical and electrical environment in underground tunnels, vaults and manholes.

A method and apparatus to enhance the direction navigation capabilities of GPS-enabled devices, through the use of light indicators is proposed. The light indicators are positioned on the top, bottom, and sides of the GPS screen. The light indicators blink at different rates relatively to a distance to a destination. The light indicators show various effects to indicate various instructions, such as to go forward direction, to go onto an overhead bridge, to enter into an underground tunnel.

The invention discloses a construction method for the lower section of an underground tunnel. In the construction method, a hydraulic jack is arranged below the underground tunnel in the construction continuous stage and the underground tunnel structure is jacked according to the settlement of the underground tunnel structure so as to prevent the settlement deformation of the underground tunnel structure, ensure that the excavating construction of the lower section of the underground tunnel is completed under the condition of continuous running of underground transport and ensure the safety of the underground transport and the construction of the lower section.