1882 results about "Cave" patented technology

A collaborative visualization system integrates motion capture and virtual reality, along with kinematics and computer-aided design (CAD), for the purpose, for example, of evaluating an engineering design. A virtual reality simulator creates a full-scale, three-dimensional virtual reality simulation responsive to computer-aided design (CAD) data. Motion capture data is obtained from users simultaneously interacting with the virtual reality simulation. The virtual reality simulator animates in real time avatars responsive to motion capture data from the users. The virtual reality simulation, including the interactions of the one or more avatars and also objects, is displayed as a three-dimensional image in a common immersive environment using one or more head mounted displays so that the users can evaluate the CAD design to thereby verify that tasks associated with a product built according to the CAD design can be performed by a predetermined range of user sizes.

A system and method for recognizing features for location correction in Simultaneous Localization And Mapping operations, thus facilitating longer duration navigation, is provided. The system may detect features from magnetic, inertial, GPS, light sensors, and / or other sensors that can be associated with a location and recognized when revisited. Feature detection may be implemented on a generally portable tracking system, which may facilitate the use of higher sample rate data for more precise localization of features, improved tracking when network communications are unavailable, and improved ability of the tracking system to act as a smart standalone positioning system to provide rich input to higher level navigation algorithms / systems. The system may detect a transition from structured (such as indoors, in caves, etc.) to unstructured (such as outdoor) environments and from pedestrian motion to travel in a vehicle. The system may include an integrated self-tracking unit that can localize and self-correct such localizations.

The invention discloses a tunnel construction method in a fault fracture zone, which comprises the following steps: a. adopting the method of combining geophysical prospecting and drilling and combining long-distance and short-distance to ascertain the geological situation in front, and carry out advanced geological prediction; b. adopting advanced Anchor construction, pre-grouting construction of the surrounding walls of small conduits in advance, and advance support construction of grouting pipe shed and steel frame, and advance pre-support; c. Tunnel excavation and support. It provides a theoretical basis for detecting the specific location, range and water inflow of the fault fracture zone; ensures the safety of tunnel construction; on the basis of analyzing the specific location and scope of the fault fracture zone and adopting a reasonable advanced pre-support method, comprehensive and specific According to the geological conditions, choose a reasonable tunnel excavation method. It has strong applicability for the construction of expressway tunnels crossing fault fracture zones; at the same time, it has reference and reference significance for the construction of railway, municipal and water conservancy tunnels (holes) with similar geological conditions.

The invention provides a method for analyzing remaining oil distribution of a fractured-vuggy reservoir, belonging to the fields of numerical reservoir simulation and oil-gas field development. In the method, a complex medium consisting of a cave medium, a crack medium and a pore medium is partitioned into a plurality of space unit blocks in a space field; each block consists of V, F and M units which represent a cave, a crack and a substrate in the block respectively and constitute a V-F-M model; the flow of a multi-phase fluid in the complex medium is described by the motion of a fluid among the units in each block and the motion of a fluid among the units of different blocks; and the flow of the fluid among the units can be considered as infiltration flow, pipe flow or laminar flow between parallel walls, Darcy flow or non-Darcy flow. According to the method, scientific description and accurate numerical simulation of the fractured-vuggy reservoir are realized, and technical foundations are laid for the alignment of the remaining oil distribution position of the fractured-vuggy reservoir with a numerical simulation technology, quantitative determination of the reserves abundance of the reservoir, scientific and reasonable development of oil fields provided with the reservoir and final increase in the recovery ratio.

The invention provides a fissure-cave type carbonate-reservoir reservoir body modeling method, and belongs to the field of carbonate reservoir exploitation geology. The method comprises the steps of (1) distinguishing karst cave reservoir body development segment in a single well; (2) building karst zone models along the vertical direction, building ancient landform unit distribution models in a plane; (3) respectively imitating three-dimensional distribution of the karst cave reservoir body in different karst zones and different ancient landform units, obtaining a three-dimensional distribution model of the karst cave reservoir body of a modeling target stratum; (4) counting development occurrence of a fissure reservoir body and single-well fissure development density; and (5) under control of a fault, building a three-dimensional discrete distribution model of the fissure reservoir body. According to the fissure-cave type carbonate-reservoir reservoir body modeling method, accuracy of the class of reservoir modeling is improved, a true condition of the reservoir is approached in a more objective mode, and important practical significance is provided for exploitation of the reservoir.

The invention provides a physical simulation experimental device for oil and gas charging of a fracture-cave carbonate reservoir. The physical simulation experiment device comprises a fracture-cave model, an experiment table with a window, surrounding rock and a camera shooting and monitoring system, wherein the fracture-cave model comprises simulation caves in different sizes and simulation fractures in different sizes, and the simulation caves are communicated through the simulation fractures; the fracture-cave model is arranged in the experiment table with the window, and the simulation caves in at least one side of the fracture-cave model are visible through the window of the experiment table; the surrounding rock surrounds the fracture-cave model to form the fracture-cave carbonate reservoir in a simulating manner; and the camera shooting and monitoring system is used for detecting and adjusting changes of both the flow rate and pressure in the charging process and recording images, displayed in the window, of the fractures and the caves in the charging process. The invention further provides a physical simulation method for oil and gas charging of the fracture-cave carbonate reservoir, and the physical simulation method employs the experimental device. According to the physical simulation method and the physical simulation experimental device for oil and gas charging of the fracture-cave carbonate reservoir, an oil-gas-water distribution rule can be obtained according to such parameters as karst, fractures, crude oil density and oil-gas-water distribution.

The invention relates to a material and a method for manufacturing a carbonate cave oil reservoir physical model. The material is characterized by comprising a manufacturing main body material for cracks and caves in the physical model and a physical model skeleton material, wherein the manufacturing main body material for cracks and caves in the physical model is selected from wood's alloy and / or paraffin. The method comprises the following steps of: 1) manufacturing models of caves and cracks of different sizes and shapes by using the wood's alloy and / or the paraffin; and 2) after the models are formed, displacing the wood's alloy and / or the paraffin at the temperature of higher than 85 DEG C to obtain a crack cave with spatial structure. The manufactured physical model accords with the characteristics of carbonate cave oil reservoir and supplies reliable guarantee for developing various physical simulation experiments.

The present invention provides a physical simulation experiment device of fracture-cavity carbonate reservoir hydrocarbon charge. The experiment device comprises a fracture-cavity model, an experiment stand with windows, a wall rock and a camera monitoring system; the fracture-cavity model comprises simulation caves in different sizes and simulation fractures in different sizes; the simulation caves are connected to one another via the simulation fractures; the fracture-cavity model is arranged inside the experiment stand with windows, and the simulation caves of at least one side of the fracture-cavity model are visual through the windows of the experiment stand; a surrounding of the wall rock is arranged around the fracture-cavity model to simulate a formation of fracture-cavity carbonate reservoir; the camera monitoring system is used for measuring and adjusting changes in flow rate and pressure in a charge process, and recording an image of fracture and cave in the charge process displayed in the windows. The present invention further provides a physical simulation method of fracture-cavity carbonate reservoir hydrocarbon charge, which uses the above-mentioned experiment device. The present invention can obtain regularities of distribution of oil, gas and water through parameters such as karsts, fractures, density of cruel oil, and oil, gas and water distribution and the like.

The invention provides a method for identifying and interpreting carbonate rock ancient karst reservoir layer three-dimensional structure. Steps of identifying a single well cave preferably comprise that: according to a cave growing segment with definite rock core and electric imaging well logging information, conventional well logging response characteristics of the cave growing segment are summarized; cave sensitive well logging parameters are preferably selected via a well logging parameter intersection method, and an identification graph plate is established; a multi-parameter normalization weighting method is utilized to establish a cave identification function; steps of identifying an inter-well cave preferably comprise that: a synthetic seismic recording method is utilized toward each single well to calibrate a cave interpreting result of a depth domain to an acoustic inversion data volume of a time domain; then threshold values of a cave segment and a non-cave segment are confirmed so that the inter-well cave is effectively identified; continuous tracking is performed along the middle of caves which are large in scale and great in continuity so that a three-dimensional tracking layer is obtained, an average value of 2ms acoustic save impedance around the tracking layer is computed, and thus a three-dimensional space growing position of an ancient karst reservoir layer is obtained.

The present invention relates to an urban underground engineering simulation test system, underground water simulation system and data acquisition system, in which the simulation box contains horizontal loading plate, horizontal loading device, vertical loading device and several layers of horizontal water inlet pipes. Said invention can implement three-dimensional simulation test of various urban underground railway engineering, tunnel and anderground cave engineering, ground base an foundation work, special underground construction method, side slope engineering and retaining wall engineering, etc.

The invention relates to a dynamic reserve calculation method and system for a fracture and cave type carbonatite oil reservoir fracture and cave unit. The method comprises a fracture and cave unit type division step, a material balance equation simplification step and a dynamic reserve calculation step. According to the method, firstly, the driving types of the fracture and cave unit are divided according to the communication relationship between the fracture and cave unit and a water body; then, a simplified material balance equation is obtained according to different driving types; then, the dynamic reserve calculation parameters in the material balance equation are optimized by combining production dynamic data through the combined relationship of the ground crude oil density, the natural gas relative density and the gas-oil ratio and the relationship between the elasticity modulus and the porosity; and the dynamic reserve in the dynamic reserve calculation parameters is calculated. The method and the system have the advantages that the precision and the accuracy of the dynamic reserve calculation result are improved; and the basis is provided for the oil reservoir development and exploration and the engineering layout.

The invention relates to a large composite acid fracturing method of a fracture cave type carbonate rock reservoir. The method is characterized by comprising the following steps of while communicating a plurality of fracture caves on the periphery of a shaft of the reservoir: (1) filling quick water into the stratum through the oil pipe of the mixed filling with the oil sleeve; (2) adding powdered ceramic to the stratum through the oil pipe; (3) filling acid liquid into the stratum through the oil pipe for the first time; (4) filling acid liquid into the stratum through the oil pipe for the second time; and (5) filling excess displacing liquid through the oil pipe or the mixed filling with the oil sleeve, wherein the large composite acid fracturing method indicates that the total construction liquid quantity is more than 2,000m<3>. The invention improves the length of an artificial acid fracturing fracture to reach longer than 140m and solves the problem that a conventional acid fracturing technology of a fracture cave type carbonate rock reservoir within the range of 200m of the shaft cannot communicate a far-shaft reservoir, and a new fracture cave reservoir is needed to be searched through side tracking.

The invention discloses a construction treatment method of a filling karst tunnel. The construction treatment method comprises the following steps that (a), a karst development control factor and a development principle are sought; (b), karst detecting is conducted for advance geology forecast; (c), analysis of influence of filling karst on stability of tunnel surrounding rocks is conducted; and (d), filling karst treatment is conducted. According to the construction treatment method of the filling karst tunnel, filling karst advance geology forecast, pre-reinforcement measures and the normal construction technical process of the tunnel are organically combined, and the safety risks of filling karst section tunnel construction are reduced or avoided by sufficiently using the means and methods such as advance geology forecast and pre-reinforcement. The construction treatment method is applied to tunnel filling karst construction of highways and railways, and meanwhile, the construction treatment method has imitative and referential significances on construction of the railways, the highways, municipal administrations and hydraulic tunnels (caves) with similar geological conditions.

The invention discloses a fracture-cave type carbonate reservoir waterflooding oil replacement recovery method, comprising the steps: 1, pilot flooding; in case of inadequate fracture-cave type reservoir elastic energy, pilot flooding is implemented within a cycle prior to normal waterflooding to determine well positions suitable for waterflooding oil replacement, and then waterflooding speed is determined according to the type of a reservoir body; 2, a proper amount of high specific gravity liquid having larger specific gravity than crude oil and insoluble with the crude oil is injected into the reservoir in order to fill in formation voidages and restore formation pressure; 3, well closing, replacement of the oil and the high specific gravity liquid is implemented by means of gravitational differentiation of the oil and the high specific gravity liquid, and the high specific gravity liquid sinks to the lower part of the reservoir body to form secondary bottom water, thereby driving oil upwards and lifting oil-water interface; and 4, well is opened for oil recovery when wellhead pressure is recovered to basically stable level. According to the invention, the replacement of crude oil and oilfield sewage is implemented by injecting the high specific gravity liquid insoluble with crude oil, such as the oilfield sewage, into oil well, and the crude oil and the oilfield sewage are converged at the upper part of fracture cavity or at the bottom of higher well in order to achieve oil recovery once again.

The invention provides a method for establishing a large-sized karst cave reservoir body distribution model of a fractured-vuggy carbonate rock reservoir, and belongs to the field of three-dimensional geologic modeling of carbonate rock reservoirs. The method comprises the following steps of: (1) identifying a large-sized karst cave reservoir body development section on a single well, wherein the large-sized karst cave reservoir body development section is an interval with large-sized karst cave reservoir bodies; (2) establishing a karst zone model in a perpendicular direction, and establishing a palaeogeomorphological unit distribution model on a plane; and (3) simulating the three-dimensional distribution of the large-sized karst cave reservoir bodies in different karst zones and palaeogeomorphological units respectively to obtain a three-dimensional large-sized karst cave reservoir body distribution model of a modeling target stratum. The control effect of a karst development mode on the distribution of the large-sized karst cave reservoir bodies is taken into a full account, the constraints of geological laws are enhanced in a modeling process, and the modeling accuracy of the large-sized karst cave reservoir bodies of carbonate rocks is improved.

The invention relates to a construction technology for allowing a tunnel to pass through a karst cave, and in particular relates to a construction technology for allowing a tunnel to pass through an ultra-large karst cave. The technology at least comprises the following steps of: 1) performing simple bridge treatment on the underground part of the karst cave; 2) performing primary support, namelyarranging a support wall at one side of the karst cave; 3) forming parallel guide holes; 4) performing bottom treatment; 5) treating the tunnel hole body at the inlet section of the karst cave; 6) filling C25 early strength sprayed concrete within 1 meter at the top of the support wall, and arranging phi 50 small grouting conduits with the lengths of 3 meters in the concrete, wherein the distancebetween the small conduits is 1.5 meters; 7) supporting the arch part and the side wall surrounding rock of the karst cave by adopting phi 22 cartridge anchor rods arranged in a plum blossom shape and at a distance of 150cm*150cm, hanging phi6 reinforcing meshes at a distance of 15cm*15cm, and spraying C25 early strength concrete with the thickness of 15 centimeters; 8) treating the accumulation of the karst cave; and 9) monitoring and measuring when the tunnel passes through the ultra-large karst cave. The construction technology for allowing the tunnel to pass through the ultra-large karst cave is simple in process, convenient for construction, low in cost, scientific, effective, energy-saving and environmentally-friendly.

The invention discloses a karst grouting reinforcement water-stop constructing method, which is to construct according to sizes of karst caves by adopting a principle of from big to small regarding a certain area, construct by adopting a principle of from outside to inside for the karst caves with the same size, and construct by adopting a principle of from the bottom to the top in a vertical direction. On the basis of the construction principles, the method comprises the following steps of: (1) forming grouting holes by adopting a core drill; (2) forming construction exhaust and drainage pressure relief holes; (3) inserting grouting pipes into the grouting holes, wherein the grouting pipes comprise steel pipes, grouting shock pipes and sleeve valve pipes; (4) cleaning the holes, wherein when the step (3) is completed, the grouting pipes are cleaned with clean water; (5) grouting; and (6) drawing out the grouting pipes after the grouting is completed, and blocking the grouting holes with cement mortar or concrete. By adopting the constructing method, the pertinence to karst caves is strong, the grouting quantity is small, the engineering work amount is small, the cost is low, and the effect of filling and reinforcing is good.

The invention discloses a method for interactively playing a panoramic video stream on a CAVE projection system, which belongs to the technical field of digital media. A conventional 360-degree panoramic video browser does not support the interactive play of the panoramic video stream on the CAVE projection system. The method comprises the following steps of: mapping panoramic picture images onto a 3D sphere as textures, splitting a 360-degree all-round spherical view field into six sub-areas, and shooting a front sub-area, a rear sub-area, a left sub-area, a right sub-area and a zenith sub-area respectively by using five different virtual cameras to obtain the pictures on each projection screen of the CAVE projection system respectively. The method has the advantage of the capacity of solving the problem that the panoramic video stream cannot be interactively played on the CAVE projection system, simplicity, practicability, no need of expensive special equipment, real-time interaction capacity, relatively lower implementation cost and convenient popularization and application.

The invention discloses a drilling pile drilling construction method of a bead-type karst area, wherein a drilling pile penetrates through an underground river karst cave from top to bottom. The method includes the steps of (1) measuring and sampling, (2) lowering and fixing a steel casing, and (3) drilling, wherein a percussion drill is used, drilling is carried out from top to bottom through the lowered steel casing until the percussion drill reaches a designed depth, and in the drilling process, the wall is protected through slurry; in the drilling process, when the percussion drill drills the underground river karst cave from top to bottom, the underground river karst cave is firstly processed, and then the percussion drill is used for drilling downwards; when the underground river karst cave is processed, the process is as follows: drilling of an inner protection casing installation hole, lowering of an inner protection casing, continuous drilling and plugging of a water source. The method is simple in step, reasonable in design, low in investment cost, convenient to achieve and good in construction effect, the drilling construction process of a drilling pile penetrating through the underground river karst cave can be easily, conveniently and quickly completed, cost is low and quality is high.

The invention relates to an experimental evaluation method of gas-injection displaceable oil of fracture-cave type carbonate reservoir. The method comprises the following steps in sequence: (1) making a fracture-cave type carbonate core model; (2) preparing an in-place oil sample and injected gas, and setting a pressure point p1 for gas injection and a pressure point p2 for gas injection termination; (3) recovering the original state of the core; (4) carrying out an exhaustion experiment from the top end of the core; (5) carrying out the gas-injection displaceable oil experiment for a plurality of times from the top end of the core at the formation temperature; and (6) calculating development indexes (of the gas injection displaceable oil experiment) such as the recovery efficiency of the raw oil, the gas-oil ratio, the gas-water ratio, and the like. By making a physical single fracture plane overall-diameter fracture-cave core model which keeps the completeness of the core, an experimental testing method for physical gas injection displaceable oil simulation is established, and a tool and a means for evaluating the recovery effect of the fracture-cave type carbonate is provided.

The invention discloses a construction method for penetrating through a large-scale vertical karst cave group tunnel. A technical measure of backfilling concrete to reserve a water passing channel is adopted for a large-scale vertical karst cave group, by strengthening support of a steel arch frame and a pipe shed for a karst cave section, a reinforced concrete beam plate structure is adopted to span on a karst cave section tunnel bottom, the bearing capacity of foundation is greatly improved, municipal bellows are pre-embedded into circumferential cracks of the vertical karst cave group and an arch karst cave before backfilling the concrete and are led to the water passing channel, the hidden danger of high-pressure karst water due to long-term water accumulation is eliminated, and the construction period and the security of future operation period are ensured. The construction method for penetrating through the large-scale vertical karst cave group tunnel is convenient to construct, the construction period is greatly shortened, the treatment filling effect of the karst cave is improved, the safety of subsequent construction is improved, material filling and the construction method are simple and convenient and without special requirements, and good use effect of field construction is obtained.

Shallow drilling hazards (44), such as karsts, caves, voids and unconsolidated discontinuities, that can pose significant risks to exploration and development well drilling operations are detected employing seismic refraction data on which a series of attribute analyses are performed, the resulting data being further processed to provide a three-dimensional visualization. Refracted wave raypaths (40, 46, 48) are highly distorted by encountering a karst feature with the occurrence of backscattering absorption. The resultant energy recorded at the surface receivers (52) is significantly reduced as compared to refracted waves recorded by other receivers (50) where no karsting is present. Multiple refractors are subjected to a relatively simple and rapid processing using commercially available software to track these differences and to map them in the near surface to improve the siting of wells and to alert drilling engineers and crews to the possibility of encountering the hazard.

The invention belongs to the technical field of tunnel traversing extra-large karst cave construction, aims at solving the problem that an existing foundation construction method cannot be suitable for extra-large karst caves and provides an extra-large karst cave bottom treatment construction method. A pipe-following drilling process is adopted to synchronously follow a sleeve in the drilling process, the sleeve penetrates through an easily-collapsed stratum to partition the easily-collapsed stratum, the pipe-following drilling is stopped at the karst cave position, then fine aggregate concrete is adopted for backfill, and continuous drilling is completed after backfill is completed. Working efficiency is greatly improved, cost is reduced, and time is saved. The pipe-following drilling process is effective compared with construction of the easily-collapsed stratum and can be universally applied to slope protection under similar geological conditions and foundation base reinforcement treatment projects. A full-automatic casting recording instrument is adopted for recoding, treatment is timely performed in an intermittent or slurry mixture ratio adjusting mode if one-single casting amount is too large or no pressure exists for long time, meanwhile the requirements for casting pressure and casting amount are ensured, and casting reinforcement effect is ensured.

The invention discloses a karst geology rotary-drilling bored concrete pile hole forming process which includes the steps of 1, leveling a field; 2, paying off at a pile foundation; 3, setting a rotary drilling machine in place; 4, embedding a pile casing; 5, preparing mud stabilizing liquid and filling the mud stabilizing liquid into the pile casing; 6, forming holes by means of rotary drilling (with requirements of reducing drilling speed when drilling in karst caves or half rocks, otherwise, drilling to reach designed elevation ); 7, performing primary cleaning of holes and hole depth checking; 8, mounting a reinforced cage and a conduit; 9, performing secondary cleaning through air-lift reverse circulation; 10, pouring underwater concrete (while preparing extra 30-40 cubic meters of concrete with consideration of karst caves so as to prevent pile scrap caused by breakdown of the karst caves and sharp sinking of concrete); and 11, forming a pile and removing the pile casing.

The invention relates to a surface of bionic wear-resistant structure, in particular to a surface of ribbing bionic wear-resistant geometry structure; the surface of bionic wear-resistant structure is based on the squama surface of the soil and cave animal pangolin and has geometry structural characteristics of soil resistant grinding medium. The surface of bionic wear-resistant structure aims at solving the abrasion problem of the prior particulate material contact parts. The surface of bionic wear-resistant structure is characterized in that: the structure of original equipment or element and the surface of the contact material is changed; and the surface is newly provided with a series of ribbing structure which has a certain geometric parameters and space. The shape of the bionic wear-resistant structure is y=asin(bx+c), wherein a is amplitude, b is frequency and c is initial phase, and 0 F16S 5 / 00 F16S 1 / 00 A01B 15 / 00 A01B 33 / 10 A01C 5 / 00 A01D 13 / 00 B65G 15 / 30 B67C 11 / 00 B65D 90 / 02 E02F 9 / 00 F16L 57 / 06 4 3 1 2008 / 1 / 30 101225919 2008 / 7 / 23 000000000 Jilin University 130012 Tong Jin Rong Baojun Ma Yunhai Chen Donghui Sun Jiyu Zhou Jiang Yan Jiulin Chang Zhiyong Zhang Jinbo zhushi lin 22201 The Patent Agency of Jilin University No.83 Liberation Main Street, the City of Changchun, Jilin Province 130023

The invention discloses a method for exploiting coal-bed methane by utilizing a water force of a horizontal pinnate well of a double well-shaft to scour, drill and relieve pressure. The method comprises the following steps: drilling a straight drainage well (3), digging a hole in a section of a target coal-bed (2) and forming a pocket (4) after passing through the coal-bed; drilling a straight well section (9) and a building section (10) of a horizontal pinnate well (8) and placing a casing pipe for fixing the well; placing a water-spraying hose (12) connected with a high-pressure water pump (11) into the horizontal pinnate well (8); passing through a cave (5), scouring the coal-bed with a high-pressure jetted water and drilling along a horizontal direction, thereby forming a horizontal sectional main well hole (14); changing a jetting direction, and jetting a plurality of branched well holes (16) around the horizontal sectional main well hole (14); causing coal water to flow back to the pocket (4) during a jetting process, and discharging the coal water through a lifting device (6); separating through a methane, coal and water separating device (7); collecting and storing the coal and methane; and reusing the water to jet flow and scour under the well. The invention provides a new solution for ground gas production on a mellow and low-seepage coal bed.

The invention discloses a method for acquiring three-dimensional permeability fields of netted fracture-cave oil reservoirs. The method includes: establishing a three-dimensional porosity field of a netted oil reservoir, and determining quantitative relation between porosity and permeability of the oil reservoir; acquiring equivalent permeability of flat and tubular fractures and caves, determining the minimal critical permeability value, subjecting the permeability of the minimal critical permeability value to truncation processing by taking the critical permeability value as the maximal value so as to obtain an equivalent permeability value; correcting the permeability field subjected to the truncation processing with a tracer agent and an interference testing result; correcting the permeability field by the aid of the numerical simulation method. The permeability acquired plays a decisive role in knowing oil reservoir developing rules, predicting oil reservoir yield, optimizing and adjusting production layers, optimizing and adjusting well patterns and well spacing, researching residual oil exploiting rules, profile controlling and water blocking, formulating gas injection and water injection schemes, exploiting cost of the oil reservoirs is reduced, exploiting efficiency of the oil reservoirs is improved, and the purpose of increasing economic benefit of oil reservoir exploiting is achieved.

The invention relates to a method for treating a tunnel passing through underground river karst hall. The method comprises the following steps of: a, searching for the position of the underground river karst hall and analyzing geological features; b, excavating a service gallery to reveal the underground river karst hall; c, mechanically clearing rock mass with potential safety hazard, clearing accumulation bodies in the underground river hall to an appropriate position higher than the top of a tunnel, forming a diversion channel, arranging a retaining dam at an appropriate upstream position of an underground river and transferring open water current of the underground river to the diversion channel for draining; d, arranging a reinforced concrete bottom plate in the underground river hall, drilling holes downwards on the bottom plate and grouting to reinforce a karst cave accumulation body; and e, undermining the tunnel. The underground river karst hall is revealed in a way of arranging the service gallery and drainage, grouting and reinforcement are directly performed on the underground river, so that a passive mode is replaced by an active mode, an existing water path of the underground river is kept and the safety and reliability of tunnel construction and operation are ensured.