CN105181421A - Production method of artificial experimental sample imitating natural crack rock sample - Google Patents
Production method of artificial experimental sample imitating natural crack rock sample Download PDFInfo
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Abstract
The invention discloses a production method of an artificial experimental sample imitating a natural crack rock sample and belongs to the technical field of rock and soil mechanics experiments. According to the production method, the natural crack rock sample is subjected to 3D scanning to obtain geometric data of a crack surface, and the geometric data is processed and computer three-dimensional modeling is carried out on the basis to obtain a computer three-dimensional model of a crack surface mold. Meanwhile, the computer three-dimensional model of a pouring box matched with the size of three-dimensional modeling software is established in the three-dimensional modeling software. A 3D printing technology is used for rapidly producing real objects of the crack surface mold and the pouring box in a large batch; and finally, the artificial experimental sample used for an indoor experimental research is obtained. The production method of the artificial experimental sample imitating the natural crack rock sample, disclosed by the invention, has the characteristics of high molding quality, short production period, low production cost and no pollution and no damages on the natural crack rock sample, and can be widely applied to the production of the artificial experimental sample of indoor experiments for researching the characters of crack rock bodies.
Description
Technical field
The present invention relates to rock-soil mechanics experimental technique, particularly relate to a kind of artificial laboratory sample method for making of imitated natural fracture rock sample.
Background technology
Natural rock mass usually can stand complicated geological movement and produce the different crack of many patterns therein.Rock mass destroys along fracture plane mostly, and the fluid fluid ability in fracture plane is also much larger than Rock Matrix, and therefore there is important impact in crack on the deformation properties of rock mass and hydraulic characteristic.All kinds of rock mass engineering projects carried out on ground and earth's surface, as in tunnel, side slope, cavern, crack affects stability and the security of all kinds of engineering.When developing the hydrocarbon resources of deep formation, the crack in rock mass affects again drilling efficiency and Reservoir Development effect.The simultaneously research of numerous scholar all shows, the concrete pattern in crack determines its impact on Rock Nature further, therefore studies the impact of crack pattern on Rock Nature significant.
At present for the research of crack pattern to Rock Nature, mainly the crack normal direction of natural fracture rock sample under different stress, temperature, fluid condition closes the tangential shearing experiment of experimental study and crack and studies two kinds.Because a same crack under requirement of engineering prediction different condition is on the impact of Rock Nature, usually need the experiment carried out repeatedly for same natural fracture rock sample under different experimental conditions.
Because occurring in nature can not have the identical fracture plane of performance pattern, the experiment under therefore usually directly using same crack rock sample to carry out repeatedly different experimental conditions in engineering.But most of cracks rock sample is after experienced by first time, second time experiment, and its fracture faces can be worn, and pattern changes, and the experimental data obtained truly can not reflect the impact of original fracture on Rock Nature.In addition, ground and earth's surface rock mass engineering project can take original position to test and laboratory experiment, and sampling more for convenience.Deep rock mass then only obtains by drilling extracting core with high costs the laboratory sample carrying out laboratory experiment.Therefore many scholars and slip-stick artist adopt mechanical property and the similar material such as concrete, sand-cement slurry of rock to water to build up the many cuboid artificial laboratory sample of the length of side between 50 millimeters to 300 millimeters with identical crack pattern and test.Can ensure that the material property pattern that is substantially identical, crack of the artificial laboratory sample in each experiment is basically identical like this, experimental result is also more true and reliable.This method of building artificial laboratory sample is widely adopted, and facilitates the development of the in-house laboratory investigation of crack Rock Nature, has drawn the conclusion of many preciousnesses, but also there is certain weak point.
Build the method preparing artificial laboratory sample at present and can be subdivided into following three kinds.
(1) direct casting method.At the scene obtain containing a pair fracture plane rock mass sample after, cutting processing is carried out to it, obtain two pieces only a face be fracture plane, other five faces are the rectangular parallelepiped rock sample of plane.By these two pieces of rock samples all according to the placement that faces up with one of fracture plane, and build box, to provide the space of building at the flat board of the surrounding specific dimensions composition that fences up.Configuring after sand-cement slurry etc. builds material, directly build in the fracture faces of natural fracture rock sample.If two of natural fracture rock sample fracture plane degrees of coupling are better, build obtain two pieces and water building body and can test as artificial laboratory sample.And if two of natural fracture rock sample fracture plane degrees of coupling are poor, then need to water building body as middleware using building obtained two pieces, with middleware for mould carries out once the similar artificial laboratory sample needed for just obtaining testing of building again.
(2) indirect casting method.Indirect casting method is the improvement to direct casting method.Be different from direct casting method to need first to make middleware, indirect casting method first uses the material such as silica gel or resin fracture face to carry out turning over mould.Without the need to cutting natural fracture rock sample before turning over mould, but obtain artificial laboratory sample by turning over to carry out building after the materials such as silica column that mould obtains cut into irregular figure.
(3) based on the method for making (application for a patent for invention number 20141083577.0) that fracture faces outline line is measured.First the method utilizes three-dimensional (3D) Laser Scanning to measure the surface profile line of the large scale fracture plane of 5 to 10 meters and tendency, inclination angle, trend.Such as denoising is being carried out to measurement data, after the process such as convergent-divergent, is obtaining undersized fracture plane model.Imported the bloom that spark cutting controller processes with respective profile wire shaped and tendency, inclination angle, trend and just can be built out artificial laboratory sample.The method is used to the impact of the Strength and Dformation characteristic studying frac-pack thing physical property fracture rock mass.
For direct casting method, its shortcoming needs in manufacturing process to cut natural fracture rock sample and stir, and likely can damage in fracture face.Need extra once to turn over mould, it is more that this makes to build material consumption, and cost of manufacture is higher simultaneously.And the time solidification forming time of turning over mould reverse mould is all at about 1 day at every turn, fabrication cycle is also longer.And indirectly casting method is also comparatively economized build material without the need to being cut natural fracture rock sample, but by the impact of self fluid ability of the material such as silica gel and resin, may can not intactly inscription rubbing crack pattern because the bubble in natural fracture rock sample fracture faces is difficult to get rid of when turning over mould.Simultaneously due to the softer cracky of silica gel material, the hard object such as steel wire can not be used to carry out vibrating getting rid of bubble when building.The crack pattern and natural fracture rock sample that cause artificial laboratory sample all there are differences by this.In addition it is important to note that due to very high to the drilling extracting core cost of deep formation, usually need to make full use of each block rock core to carry out various experiment, as the measurement of permeability, factor of porosity, the computerized tomography surface sweeping reconstruction etc. of rock core.And directly using sand-cement slurry to carry out the liquid phase of turning in the process of mould, may to infiltrate natural fracture rock sample inner and pollute, silica gel and resin turn over mould also may pollute natural fracture rock sample surface.This will cause natural fracture rock sample can not carry out other experiments again, further increase the cost of manufacture of artificial laboratory sample undoubtedly.The method for making measured based on fracture plane then well avoids these problems, in whole manufacturing process, carry out contactless in site measurement owing to have employed laser, can't produce pollute natural fracture rock sample.But it is for the large scale fracture plane of 5 to 10 meters, only measures the surface profile line of fracture plane and tendency, inclination angle, trend, and have ignored the concrete pattern of fracture plane.Thus thus obtained artificial laboratory sample also only contain fracture plane surface profile line and tendency, inclination angle, move towards information, have ignored the concrete pattern details of fracture plane.If the artificial laboratory sample that directly use is made by it carries out studying can not reflect that the concrete pattern of fracture faces is on the impact of Rock Nature well.The method for making simultaneously measured based on fracture plane adopts the mode of spark cutting processing bloom to make and builds mould, and its process time and processing cost are also higher.
And adopt 3D scanning technique comparatively ripe at present and 3D printing technique, contactlessly, fast, accurately and intactly can obtain the geometric data of whole fracture plane pattern.The mould that 3D printing technique just can be adopted after processing scan-data to produce fast, in batch build is to build artificial laboratory sample.So just, the object of high-quality, low cost, rapidly making artificial laboratory sample can be reached.
Summary of the invention
The preparation method that the object of the invention is to overcome artificial laboratory sample in the rock mass research of existing crack can damage the natural fracture rock sample as imitated object and pollute, and cost of manufacture is higher, the deficiency that fabrication cycle is longer, the artificial laboratory sample method for making of a kind of imitated natural fracture rock sample of proposition.The method adopts the complete crack pattern geometric parameter of 3D scanning technique to natural fracture rock sample accurately to measure, and scan-data adopts the manufacture of 3D printing technique rapid batch to build mould to shorten the fabrication cycle of artificial laboratory sample after software process.
For achieving the above object, the present invention is achieved by the following technical solutions:
An artificial laboratory sample method for making for imitated natural fracture rock sample, comprises the steps:
(1) measure the approximate size of the fracture plane of natural fracture rock sample, and experimentally the maximum printing size of requirement and 3D printer determines the length and the width that make the fracture plane of building mould and artificial laboratory sample jointly.
(2) length of the fracture plane determined according to previous step and width, the single sweep operation area size of selected 3D scanner is also calibrated 3D scanner.Then use the fracture plane pattern geometric parameter of 3D scanner to natural fracture rock sample accurately to measure, obtain the cloud data of complete crack pattern by splicing after single pass or Multiple-Scan.
(3) in the function software supporting with 3D scanner, carry out " cloud data global optimization " and " remove overlapping some cloud " operate and preserve.
(4) the some cloud through previous step process is derived preservation, then import in GeomaticStudio reverse engineering software.Usually use the artificial laboratory sample of rectangular parallelepiped that a face is fracture plane owing to testing, therefore in GeomaticStudio, crop unnecessary some cloud according to the fracture plane size needed for experiment, then a cloud is packaged into triangle surface and preserves with stl file form.Now just obtaining a border is rectangular fracture plane.
(5) the STL model file that previous step obtains is imported in Pro/Engineer modeling software, supplement plane in the surrounding of fracture plane, also supplement a plane in the bottom of fracture plane.This makes whole model encapsulates, becomes and has a face to be the rectangular parallelepiped of fracture plane, the electronic 3-D model of fracture plane mould namely for building.The electronic 3-D model of ready-made fracture plane mould is preserved with stl file form.
(6) electronic 3-D model of fracture plane mould is imported the supporting Slice Software of 3D printer, generate section file and import 3D printer and fracture plane mould is printed.Depending on the size of fracture plane mould, a 3D printer can print one or more fracture plane mould simultaneously, can also print fracture plane mould building to wait in solidifying process simultaneously, can shorten total artificial laboratory sample Production Time.
(7) also need flat board that 4 pieces of sizes are mated with fracture plane mold side appearance to surround to build box for carrying out building.For convenience of the demoulding, adopt split-type design to be divided into 2 symmetry models separated along its diagonal line and in 3 d modeling software, to carry out modeling by building box and save as stl file form, then adopt 3D printing technique to make equally.
(8) after having made and building box, fracture plane mould is put into and builds bottom box.Reinforcing building box subsequently, winding binding can be carried out reinforce building box external application iron wire, also can prop up with weight and build box, thus prevent to build and box has larger gap and build box distortion before building material shaping and building unsuccessfully of causing.Build mould to form together with fracture plane mould by building box.
(9) material is built in configuration.In fact at present the material of building of energy simulation rock performance has a variety of, as sand-cement slurry, grouting material, concrete, gypsum etc.Even same class material, different researchers also uses different proportionings.For sand-cement slurry, the ratio of river sand and cement is everlasting between 1 ~ 5 and is floated, and cement content is higher, and the intensity of watering the sand-cement slurry built up is also higher.A certain amount of additive can be added to change its performance in addition to building in material.Such as add early strength agent to make to build material and obtain higher intensity in a short time with the demoulding early, accelerate the transfer of mould.Also such as add defoamer and swelling agent and improve the shaping quality of building material.Generally speaking usually all need to carry out building the mechanical property that experiment determines to build material and whether reaching re-set target of different ratio.
The present invention proposes a kind of artificial laboratory sample method for making of imitated natural fracture rock sample, use and build material to carry out building shaping building in box and fracture plane mould of making of 3D printer be the core procedure of making artificial laboratory sample.But varied owing to building material prescription, choice is very large.The concrete formula of therefore building material, not as claim content of the present invention, does not also describe in detail in technical scheme, only introduces a kind of formula in a specific embodiment.
(10) after configuring and building material, brush one deck release agent is being built on box inwall and fracture plane die surface to help the demoulding below.Material will be built subsequently pour into rapidly and build in box, and use the hard object such as steel wire to vibrate until surface is not having bubble to occur.Then build the surface of sample by doctor blade, and clean out from build box gap ooze out come build material.In room under the condition of constant temperature and humidity maintenance after 24 hours the demoulding numbering for subsequent use.
(11) look the artificial laboratory sample quantity required for experiment and existing fracture plane number of molds, the mould after the demoulding can be used to proceed to build after cleaning is air-dry.If the artificial laboratory sample quantity required for testing builds number of molds much larger than existing, the making of 3D printing technique can be used to build mould building continuation while time is coagulated.Consider in the sample of having built there are some faulty materials simultaneously, suitably can make some samples for subsequent use more.After prepared by the artificial laboratory sample of requirement, check whether its surface has obvious defect, as large crackle and bubble and surface irregularity.After weeding out these defective samples, if remaining sample quantity is less than the artificial laboratory sample quantity required for experiment, repeat step (10), otherwise artificial laboratory sample manufacturing process terminates.After artificial laboratory sample manufacturing process terminates, to clean and to be put in Indoor Natural air-dry building mould, checking mould subsequently and observing its surface whether there is breakage.Retain and do not have damaged mould to use for next time, carry out filing preservation to building used fracture plane mould at every turn with the STL model file of building box simultaneously.
With existing build prepare artificial laboratory sample method compared with, the present invention has following beneficial effect:
(1) by carrying out 3D scanning to the fracture plane of natural fracture rock sample, contactlessly, fast and intactly can obtain the geometric data of whole fracture plane pattern, and adopting 3D printer to make fracture plane mould based on thus obtained scan-data, the fracture plane mould produced reflects the shape characteristic of fracture plane truly.What 3D printer made simultaneously builds mould use PLA (PLA) material, and the shrinkage factor after shaping is lower, even if the mould of building making large-size also shows well.In addition after shaping to build die surface bright and clean, hardness is higher, to build in shaping process and can to vibrate eliminating bubble by hard object such as steel wires.So just, improve the shaping quality of artificial laboratory sample.
(2) make build mould owing to have employed 3D scanning technique and 3D printing technique, in whole process, natural fracture rock sample can not be polluted and be destroyed, and 3D has scanned just can directly take away afterwards and done other experiment tests.Build material only for the making of artificial laboratory sample, without the need to additionally building middleware simultaneously.In addition the material price adopting 3D printing technique to use is cheap, and the consumption that mould is built in each making is also less, therefore also has Mold Making this feature with low cost.Lessen the cost of manufacture of artificial laboratory sample like this.
(3) adopt 3D printing technique to make quickly and in batch and build mould, build wait solidifying while can continue making and more build mould.Lessen the fabrication cycle of artificial laboratory sample like this.
(4) filing preservation to all be carried out owing to building used fracture plane mould and the STL model file of building box at every turn, even if the fracture plane mould that natural fracture rock sample itself and early stage make is in kind and to build box material object all destroyed, also the STL model file of filing preservation can be utilized at any time to process artificial laboratory sample, there is repeatability.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the present invention is further illustrated.
Fig. 1 is the process flow diagram of artificial laboratory sample method for making in the embodiment of the present invention.
Fig. 2 is the natural fracture rock sample for scanning chosen in embodiment.
Fig. 3 is the FDM35-2525 type 3D printer used in embodiment.
Fig. 4 is that the EaScan-D used in embodiment copies number mapping 3D scanner.
Fig. 5 is the fracture plane pattern point cloud obtained after the splicing of 3D scanner Multiple-Scan.
Fig. 6 is the electronic 3-D model of fracture plane mould.
Fig. 7 is the split-type structural schematic diagram of building box.
Fig. 8 is the fracture plane mould that made by 3D printer and builds box.
Fig. 9 is fracture plane mould and the combination schematic diagram of building box.
Figure 10 finally builds the artificial laboratory sample made.
Mark in figure: 7-1 builds box A, 7-2 and builds box B, 7-3 fracture plane mould.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail most:
The flow process of artificial laboratory sample manufacture method of the present invention as shown in Figure 1, comprises the estimation of natural fracture rock sample, 3D scanning, builds mould modeling, 3D prints, builds these 5 steps shaping.By embodiment, these 5 steps are described below.
(1) for the natural fracture rock sample shown in Fig. 2, estimating its length is 172 millimeters, and width is 105 millimeters.The FDM35-2525 type 3D as shown in Figure 3 that adopts in the present embodiment prints function and makes maximum length and width is all 250 millimeters, maximum height be 350 millimeters build mould, the size of natural fracture rock sample allows in the scope that makes at 3D printer.Artificial laboratory sample length and the width of the required making of experiment in the present embodiment are 50 millimeters, and requirement for height is in 50 millimeter.Therefore the partial fracture face data of natural fracture rock sample need only be obtained.Owing to adopting 3D scanning technique, therefore fracture faces topographic data can be obtained without the need to carrying out cutting processing to natural fracture rock sample.
(2) fracture plane size needed for selected according to previous step, the length that selected EaScan-D as shown in Figure 4 destroies the single sweep operation region of number mapping 3D scanner is 100 millimeters, and width is 75 millimeters.The correction plate provided according to 3D scanner producer and aligning step correct.Now the measuring error of 3D scanner is 0.015 millimeter, and the spacing of the some cloud that scanning obtains is 0.08 millimeter, accurately can obtain the geometric parameter of fracture plane pattern.Elect scan pattern as mark scanning, so just fully can obtain the topographic data of fracture plane from multiple angle, be finally spliced into the some cloud that comprises complete fracture plane topographic data.After probably scanning 6 ~ 10 times from different angles, observe the some cloud be spliced into and whether there is white space, the place namely scanned not yet.If there is broken hole, carry out repeatedly finer scanning with supplementary data for this region.Finally obtain fracture plane pattern point cloud as shown in Figure 5, in the function software that 3D scanner is supporting, carry out " cloud data global optimization " and " remove overlapping some cloud " operate and preserve.
(3) cloud data that previous step obtains is imported in GeomaticStudio reverse engineering software, use " rectangular selection instrument " on the millet cake cloud of crack, choose the square area that a length of side is 50 millimeters, then carry out " reversion is selected " operation choose except other overseas clouds of this square region and delete, namely obtain the fracture plane cloud data of experiment required size.Carry out " encapsulation " operation to it cloud is converted into triangle surface and preserves with stl file form.The file just preserved is imported in Pro/Engineer modeling software, in the surrounding polishing plane of fracture plane, also supplement a plane in the bottom of fracture plane, obtain electronic 3-D model as shown in Figure 6 and preserve with stl file form.Experimentally requirement, carries out three-dimensional modeling for building box in Pro/Engineer.The conveniently demoulding, build box and adopt split-type design to be made up of two parts, its profile as shown in Figure 7.Build box A7-1 to match with the inside dimension and fracture plane mould 7-3 of building box B7-2, and external dimensions is slightly large.The interior length of side of building box in the present embodiment is 50 millimeters, and the outer length of side is 70 millimeters, and thickness is 10 millimeters, is highly 50 millimeters.Such design to build box structure simple and be convenient in demoulding, also have enough hardness shaping to ensure simultaneously.After completing the modeling of building box, model is saved as stl file form.
Above 3 steps 42 minutes consuming time altogether in the present embodiment.
(4) cut into slices in Slice Software supporting with 3D printer with the STL model file importing of building BOX Model for fracture plane mold former, obtain the section file instructing the work of 3D printer.By section file stored in SD card, then SD card to be inserted in 3D printer and the material object allowing it load section file printout to go out fracture plane mold former and build box.Often organize fracture plane mould in the present embodiment and Production Time of building box is 3 hours 35 minutes, consume 3D printer material 60 grams.Manufacturing speed limits, if use novel KosselDelta type 3D printer manufacturing speed to improve 2 to 3 times by the 3D printer capability used in the present embodiment.The artificial laboratory sample quantity of building mould number of copies experimentally required determines.If the artificial laboratory sample quantity needed for experiment is more, Mold Making can be taked and build the strategy simultaneously carried out, higher artificial laboratory sample quantum of output can be obtained after a certain time.Final acquisition fracture plane mould as shown in Figure 8 and build box.
(5) fracture plane mould is placed on hard smooth ground, will box be built according to the array mode shown in left side and Fig. 9 and fracture plane die assembly in Fig. 8.Tightly wrap building on outer box wall face with iron wire, and be close to and build outer box wall face and stack weight to reinforce building box.According to water: cement: the quality proportioning configuration sand-cement slurry of river sand=1:2:4 is as building material.To build to pour into after material stirs builds in box, is undertaken vibrating and swiping to building internal face subsequently, thus make bubble draw eliminating by hard object such as steel wires.After sand-cement slurry surface does not have bubble to overflow, scrape off the sand-cement slurry of excess surface, to clean out on ground and from the sand-cement slurry of building box edge and oozing out.Under the condition of indoor preservation constant temperature and humidity maintenance after 24 hours the demoulding numbering for subsequent use.Check whether to there are incomplete product, as containing large crackle, bubble etc.After artificial laboratory sample manufacturing process terminates, mould will be built and take apart and carry out cleaning and to be put in Indoor Natural air-dry, and check fracture plane mould subsequently and build box and observe its surface whether there is breakage.Retain and there is no damaged fracture plane mould and build box to use for next time, used fracture plane mould is built to this simultaneously and carry out filing preservation with the STL model file of building box.
The artificial laboratory sample of final acquisition as shown in Figure 10.Observe Figure 10 and find that artificial laboratory sample surface exists some crackles.This is because the sand-cement slurry configured in the present embodiment does not add the additive such as swelling agent and defoamer, in its process of setting, volume can constantly reduce the generation causing crackle.This by the proportioning of improvement water, cement, river sand, and can add appropriate additive to be avoided, and is not the self-defect of method for making proposed by the invention.
Therefore the better feasible embodiment of above-mentioned only the present invention, non-ly limit to scope, does various distortion or apply mechanically all within this technical scheme protection domain according to above-described embodiment.
Claims (7)
1. an artificial laboratory sample method for making for imitated natural fracture rock sample, is characterized in that: adopt 3D scanner accurately to obtain the geometric parameter of natural fracture rock sample fracture plane pattern; Carrying out Computerized three-dimensional modeling based on the 3D scan-data after process, obtaining the electronic 3-D model of the fracture plane mould for building; The electronic 3-D model of building box that size and fracture plane mould match is set up in 3 d modeling software; Fracture plane mould and the electronic 3-D model of building box are imported after cutting into slices in the Slice Software supporting with 3D printer and obtain file of cutting into slices, allow 3D printer load this section file to make fracture plane mould and the material object of building box; Gained fracture plane mould and the material object of building box are pieced together and just obtains after reinforcing and build mould; Configure after building material and build building in mould, in constant indoor temperature constant humidity maintenance demoulding after 24 hours, artificial laboratory sample has just manufactured; While building, continue 3D printing build mould to improve the manufacturing speed of artificial laboratory sample; To clean and air-dry at Indoor Natural building mould, retention surface does not have damaged mould of building to use for next time; Fracture face mould tool and the STL model file of building box carry out filing and preserve.
2. the artificial laboratory sample method for making of imitated natural fracture rock sample according to claim 1, it is characterized in that: make build mould owing to have employed 3D scanning technique and 3D printing technique, in whole process, natural fracture rock sample can not be polluted and be destroyed, and just directly can take away and do other experiment tests after 3D has scanned.
3. the artificial laboratory sample method for making of imitated natural fracture rock sample according to claim 1, it is characterized in that: data processing is carried out to the crack millet cake cloud that 3D scanning natural fracture rock sample obtains, be packaged into triangle surface after cutting being carried out to the requirement of artificial laboratory sample size according to experiment, obtain a border and be rectangular fracture plane and preserve with stl file form; The rectangular parallelepiped that this fracture plane and 5 planes close composition is the electronic 3-D model of fracture plane mould.
4. according to the artificial laboratory sample method for making of claim 1 or imitated natural fracture rock sample according to claim 3, it is characterized in that: according to the electronic 3-D model size of fracture plane mould, in 3 d modeling software, set up the electronic 3-D model of building box; The electronic 3-D model of building box adopts split-type design, is divided into 2 symmetry models separated in 3 d modeling software modeling and saves as stl file form, then adopt 3D printing technique to build the material object manufacture of box out along its diagonal line.
5. the artificial laboratory sample method for making of imitated natural fracture rock sample according to claim 1, it is characterized in that: after artificial laboratory sample completes, mould will be built take apart and carry out cleaning and to be put in Indoor Natural air-dry, and check fracture plane mould subsequently and build box and observe its surface whether there is breakage; There is no damaged fracture plane mould and build box to reuse.
6. the artificial laboratory sample method for making of imitated natural fracture rock sample according to claim 1, it is characterized in that: build wait solidifying while continue to adopt 3D printing technique to make and build mould, build mould and the quantity of artificial laboratory sample that finally obtains is improved.
7. the artificial laboratory sample method for making of imitated natural fracture rock sample according to claim 1, it is characterized in that: after each artificial laboratory sample completes, all want fracture face mould tool and the STL model file of building box to carry out filing to preserve, even if therefore natural fracture rock sample and existing fracture plane mould is in kind and to build box material object all destroyed itself, also the STL model file of filing preservation can be utilized at any time to process artificial laboratory sample, there is repeatability.
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