310 results about "Rock structure" patented technology

The invention relates to the technical field of mining safe engineering, and particularly to a stability monitoring method for a cold high-altitude steep slope. According to the stability monitoring method, through field engineering geology, hydrogeology survey, engineering geological rock quality evaluation and rock mechanical parameter determining, the lithologic condition, the rock structure, the hydrogeology condition, the slope shape, earthquake parameters, explosion parameters and the like of the slope are determined. Slope stability analysis and a treatment strategy measure are performed. Furthermore a comprehensive monitoring system and a slope instability criterion are established.

The invention discloses a manufacturing method of a simulation fracture for a fractured rock mass seepage test. The manufacturing method comprises the steps of drawing a fracture digitized profile curve, constructing a fracture three-dimensional model, making a fracture plate through 3D (three-dimensional) printing, making a fracture test piece casting model and performing casting and maintenance of a fracture test piece, specifically, through digitizing a rock structural surface joint roughness profile curve, drawing the fracture three-dimensional model on the basis of CAD (Computer Aided Design) software, making the fracture plate satisfying JRC value fluctuation by adopting a 3D printing technology, making the fracture test piece casting model by combining the fracture test piece, forming by using cement mortar to cast, and making the fracture test piece by performing maintenance in a cement test piece maintenance box for 28 days. The manufacturing method has the beneficial effects: the manufacturing method of rock rough fracture analogue simulation which is easy in observing, simple in manufacturing, convenient in testing, convenient for adjusting fracture opening, and capable of truly and accurately reflect rock mass fracture structural surface roughness is provided, the working procedures are simple and clear, the manufacturing duration is short, economy and efficiency are realized, the accuracy is high, and the adaptability is good.

The invention relates to a method for identifying the lithology of volcanic rock. The method comprises the following steps of: determining the types of rock needing lithological identification; calculating the content of each element in stratigraphic rock in percentage by weight by using the theory of oxygen closed mold on the basis of elemental capture spectroscopy logging information; classifying the lithology of volcanic rock by using a silicon-alkali classification method; extracting the rock structure information of different classes of lithology of volcanic rock on the basis of imaging logging information in combination with oilfield on-site coring analysis and geologic description; combining the rock components calculated according to elemental capture spectroscopy logging with therock structure information determined according to the imaging logging information together and converting a TAS two-dimensional plane into a three-dimensional plane by using the rock structure information as a third dimension scale; and realizing three-dimensional volcanic rock lithological identification by using an SVM (Support Vector Machine) method. By adopting the method, the coincidence rate of lithological identification can be improved to reach more than 90%, which is 10 times that of the traditional method.

An integrated style shear apparatus for rock structural plane comprises a frame system, a vertical loading system, a horizontal loading system, and a shearing system. Both the vertical loading system and the horizontal loading system are fixed on, and the shearing system is installed inside the frame system. The shearing system is used to prepare the sample of structural plane and actualize the shear test, the vertical loading system and the horizontal loading system are used to provide normal stress and shear stress for the shearing system respectively. The present invention also provides an experimental method by using the integrated style shear apparatus for rock structural plane, and steps of the method including: sample placement, sample adjustment, sample preparation, sample loading, instrument hookup, exerting normal stress, exerting horizontal stress, measurement and description of shear area, repeating experiment, and normal stress and shear stress calculation. The present invention can effectively reduce sample preparation error and experimental error, and can rapidly and accurately determine shear strength and deformation parameters of rock structural plane.

The bone coal displacement strip coal block exploration under an architecture, concentrically sets 3-5 bone coals filling lane at the center of each strip coal block, based on the buried depth, width, laminated rock structure and protective degree required by the architecture build on the surface of each strip coal block, advancing coal mining for the 3-5 bone coals filling lane and then filling bone coals from the interior to the exterior inside the lane that has dug out coals. Ensuring the safety of the architectures, filling the displacement coal with bone coals, it can realize exploration rate no less than 20%, the total recovery rate of the strip mining area no less than 65%; Filling the mine with bone coals dug out can not only eliminates the bone coals on the land, reduces the encroachment of farmland, mitigates air and environmental pollution, gets rid of bone coal landslide or explosion and other hidden accidents that may affects the human life but also using bone coals working as the underground support of the mine and realizing second partial recovery for strip coal blocks under the architectures.

The invention relates to a method for prefabricating rough fractures in a rocklike similar material specimen and belongs to experimental methods of rock mechanics. The method comprises the following concrete steps: processing a rock specimen, and carrying out a destruction test with a testing machine, so as to obtain a fractured rock specimen containing a single rough through fracture; then, wrapping the fractured rock specimen with a flexible high-temperature-resistant coil, filling the rough fracture with liquid compound materials at high temperature, and naturally cooling; removing the flexible high-temperature-resisting coil, so as to obtain a compound material fracture piece; digitizing the surface appearance characteristic of the compound material fracture piece with a three-dimensional laser scanner; fixing the compound material fracture piece into a specimen processing mould, and then pouring flowable rocklike similar materials; after a similar material specimen is hardened, demoulding and heating so as to enable the compound material fracture piece to be melted to flow out; cooling, so as to obtain the rocklike material specimen containing rough joints. The method has the characteristics of being simple in process, low in cost, good in repeatability and high in precision and has a wide application prospect in a physical and mechanical property test of rock structure planes.

A method for controlling the surrounding rock of the side coal seam roadway in the goaf of the fully-mechanized caving face. According to the geology of the fully-mechanized caving face measured on site and the mine pressure data of the adjacent mining face, the stability of the large structure of the overlying rock mass on the roadway is analyzed. Determine the width of the narrow coal pillar reserved on the side of the goaf, so that the roadway is located in the area of ​​relatively low vertical stress in the coal body, and the high-performance bolt support that controls the surrounding rock of the roadway forms a small load-bearing structure in the surrounding rock in the anchorage area . The small structure can make full use of the surrounding rock's own bearing capacity, and has strong adaptability to the deformation of the surrounding rock, ensuring smooth roadway support without repair, low bolt support cost, fast speed, and low labor intensity; it is compatible with large coal pillar roadway protection Compared with the narrow coal pillar protection roadway, the method reduces the loss of coal resources, improves the recovery rate of fully mechanized caving mining, and has good economic and social benefits.

The invention discloses a method for identifying a reservoir by combining electrical imaging and a reef geologic model, and belongs to the technical field of marine carbonatite well logging interpretation. The method comprises the following steps of: selecting a carbonatite reef reservoir sedimentary facies model according to a reef reservoir sedimentation model; establishing the correspondence between the reef reservoir sedimentation model and an electrical imaging well logging image characteristic based on an electrical imaging well logging image; establishing an electrical imaging image library of a standard reservoir of the carbonatite reef reservoir; performing rock structure characteristic-based image dynamic enhancement contrast according to images in the electrical imaging image library; and determining a part of a reef phase reservoir, through which a well runs, based on a typical image of an electrical imaging reef phase, and comparing with a typical image of a favorable reservoir to determine the quality of the reservoir. The method greatly improves the coincidence rate of well on-site interpretation and test oil, and is fully applied to various related oil fields in China.

An X-ray fluorescence debris recording method of oil drilling geology is characterized in that: it contains the following steps: 1. sample from shallow to deep continuously on the drilling depth to get the debris samples of each drilling depth rock formation. 2. Clear the debris samples of each drilling depth rock formation on the drilling depth and dry these debris samples. 3. Grind the debris samples to powder and put them into the pressing die. Press the powder to print by using the tablemachine under the vacuum. 4. Test the component data of the print sequentially by using the energy dispersing-type X-ray fluorescence analyzer on the drilling depth. 5. The computer system makes the rock component data to the atlas on the drilling depth. Based on the analysis of the data and the atlas, the decision of the drilling lithologic characters and horizon is achieved. The distinct effects of this invention are: the cheap price, the low testing cost, the shorter analysis cyclic, the rock structure can be achieved simultaneously as the drilling speed.

The invention discloses a method for fabricating a coupling shear specimen containing a natural structure surface, and belongs to the field of rock structure surface test research. The method comprises the following steps of scanning a natural surface of a rock body employing a three-dimensional white-light scanning instrument to obtain point cloud data of the natural structure surface; fabricating a virtual three-dimensional model containing the natural structure surface from the obtained point cloud data employing inverse engineering software; printing an entity die from the generated virtual three-dimensional model through a 3D printer, then putting the printed die into a standard cast iron test die and carrying out shearing specimen fabrication. The method can be used for repeatedly fabricating the coupling shear specimens which are completely consistent in form and contain natural structure surfaces, and is of great significance in research of the shear destruction mechanism of the natural structure surface of the rock body.

The invention discloses a rock structural surface shear test method and an implementation apparatus thereof. The method mainly comprises the steps that: an upper part and a lower part of a rock sample are respectively fixed in an upper opened shearing box and a lower opened shearing box with opposite opening surfaces through filling, wherein a certain distance is kept between the opening surfaces of the upper and lower shearing boxes, such that the rock sample block shear test structural surface is exposed between the opening surfaces of the upper and lower shearing boxes; a pair of shear loads with opposite directions are implemented on the upper and lower shearing boxes, and the loads act upon the rock sample block through the filling materials in the shearing boxes; the loads further act upon the rock sample block structural surface, such that the shear strength parameter of the rock sample block structural surface is obtained. According to the invention, the rock structural surface is subjected to a shear test, such that structural surface damage of the rock sample block during a moving process is effectively avoided, and test failure caused by damaged structural surface is prevented. The influence of cement upon sample block tests in prior arts is completely eliminated, and the true shear strength parameter of the rock structural surface can be obtained.

The invention discloses a carbonate rock structure ingredient well logging quantitative recognition method and a purpose thereof. The method mainly comprises three parts including porosity and water saturation well logging calculation, rock structure number parameter calculation and rock structure ingredient identification. When RFN obtained through calculation is smaller than 0.3, the structure is a micrite structure; when the RFN is between 0.3 and 1.1, the structure is a powder crystal structure; when the RFN is greater than 1.1, the structure is a fine crystal or particle structure. The sound wave time difference logging curve is adopted for calculating the porosity, the deep lateral resistivity well logging curve and the porosity are utilized for calculating the stratum water content saturability, a rock structure number formula is utilized for calculating the rock structure number parameter, and different rock structure ingredients are identified through cutoff values. The method provided by the invention is practically applied to the stratum of Majiagou formation of Ordovician system in Wuqinan region of Ordos Basin, and a better effect is obtained.

The invention provides a rock structure surface shape anisotropism evaluation method which comprises the steps that (1) rock structure surface three-dimensional shape data are obtained; (2) according to an experiment variation function formula, a point pair in the structure surface analyzing direction is computed, and a development tendency chart following changing is drawn; (3) a variation function model is determined, function model fitting is carried out, and then a model parameter range a and a base table C are determined; (4) a dimensional method is used, and H (represented by a and C) is used for representing structure surface anisotropism features; and (5) values in all directions of structure surfaces are computed according to the steps (2), (3) and (4), and accordingly the anisotropism features of the rock structure surfaces are analyzed. According to the method, the rock structure surface shape anisotropism can be effectively represented in a quantification mode, convenience and accuracy are achieved, and a basis is provided for further and comprehensive evaluation of rock structure surface shearing strength.

The invention relates to a rock structure surface shearing device and method. The rock structure surface shearing device comprises a test piece system, a pressure plate system, a loading system and a data acquisition system, wherein the test piece system comprises an upper rock and a lower rock with heating holes on a rock structure surface, the loading system can be used for performing normal pressure loading, left shearing force loading and right shearing force loading, and the pressure plate system comprises two 7-shaped loading plates; the rock structure surface shearing device also comprises a roll set system which includes four groups of press rolls for connecting the loading system and the pressure plate system to reduce friction of a test piece and the loading system; the rock structure surface shearing device further can comprise a heating system which adopts heating rods to control the temperature of high-quality heat-resisting silicone oil in the heating holes to heat the upper rock and the lower rock on the rock structure surface; the data acquisition system can be used for acquiring data of pressure, displacement and temperature. The rock structure surface shearing device can bidirectionally shear the test piece of the rock structure surface and realize research to the shearing characteristic of the rock structure surface at different temperatures.

The invention relates to a simple method for measuring roughness coefficient of rock structure surface, including the following steps of: measuring convex tooth amplitude Ryn of rock structure surface; calculating the relative convex tooth amplitude value RA of rock structure surface profile curve with sampling length Ln using the formula RA=RYn/Ln; obtaining the roughness coefficient of rock structure surface profile curve with sampling length Ln by substituting the RA into the formula JRCn=400RA. The method which is simple and convenient for operation and calculation quickly can be performed without the influence of human factor and have great value and social economical benefit with satisfied precision.

The invention discloses a method for determining the first weighting supporting resistance of shallow thin bedrock coal seam mining, and relates to the technical field of coal seam mining. The method comprises the steps that the sliding instability supporting force of a non-symmetric three-hinged arch structure with an upper roof not picked and the length of a rock are determined; the sliding instability supporting force of a monocline rock structure is determined after the upper roof is picked; the non-symmetric three-hinged arch structure with the upper roof not picked is analyzed, and a first weighting support-surrounding rock relation model of shallow thin bedrock coal seam mining is established; a load transfer coefficient is determined; the load of the rock on the upper roof during first weighting is determined; the pressure transferred through sliding instability of the upper roof structure is determined; the weight of an immediate roof rock column is determined, and the first weighting supporting resistance of shallow thin bedrock coal seam upper roof is determined. According to the method, a top plate structure for first weighting of a shallow thin bedrock coal seam is fully considered, a mechanical model is established for resolving, the reasonable supporting resistance of a support in the first weighting period is obtained, and the method has important theoretical significance and practical value in achieving safe and efficient production of a mine.