30 results about "Phyllite" patented technology

The invention discloses a quick sealing method for excavating a phyllite stratum tunnel. The method comprises four steps, wherein a tunnel face is subjected to advanced small conduit grouting supporting before being excavated in the step (1); grouting anchor rods with lengths L of more than or equal to 8m are adopted as foot locking anchor rods of steel frames of each step in the step (2); surrounding rocks behind primary supports are subjected to grouting reinforcement after the primary supporting of each step; in each excavation cycle in the step (4), the excavation length of the upper step is 1 frame, the middle step is 2 to 3 frames, the lower step is 2 to 3 frames, and the tunnel bottom is 4 to 6m. According to the excavation method, the excavation lengths of the middle and lower steps and the tunnel bottom in each cycle are increased under the condition of no changes in the footage of the upper step in each cycle, the primary supporting closing time is shortened, the deformation of the tunnel is effectively controlled, the engineering cost is greatly lowered, the construction safety is ensured, the construction progress is accelerated, and the method is easy to operate, and has higher popularization and application value.

The invention discloses a one-time dig construction method for a major-diameter and full-depth pioneer well of a pressure regulation well, relates to the dig construction method for the pioneer well of the pressure regulation well. The invention adopts a from-up-to-bottom construction, and a from-bottom-to-up layering blasting method,is used in the rock breaking and fracture development areas of phyllite and clamp slate, and overcomes the shortcomings including the difficulty in the installation of a ventilation device, the difficulty in the setting-up of a construction platform, the problems of rock breaking and grave chip off-falling and the difficulty in safe protection in previous method. The one-time dig construction method has the advantages of reducing the construction cost, ensuring the construction safety, and being not used in other engineers at present.

The invention relates to a method for building high roller compaction water-permeable tailing dam by rock dumping, which is characterized by comprising the following steps: acquiring layer depth and compaction criterion control parameters of the high roller compaction water-permeable tailing dam by means of onsite test, wherein the layer depth is from 0.3 to 0.6 meters; roller-compacting rocks 13 to 17 times by a vibrating compactor, wherein natural average density of migmatitic granite can reach 2.45g / cm3 and average dry density thereof is 2.41g / cm3, and natural average density of phyllite can reach 2.45g / cm3 and average dry density thereof is 2.39g / cm3; acquiring accurate computation parameters by onsite direct shear and permeation test, wherein dry bulk density is 2.0 to 2.3g / cm3, angle of internal friction is 36 to 40 DEG, and cohesive strength is 0 to 5 MPa; and verifying the onsite direct shear computation parameters by large triaxial test to result in the fact that the cohesive strength and the angle of internal friction are within the scope of the large triaxial test. The method can increase the capacity of tailing reservoir and prolong the service life of tailing preservoir.

The invention relates to a soft phyllite tunnel excavation deformation control method which comprises the following steps: (1) after preliminary bracing of a top step is finished, lagging the upper step, excavating a middle step on the left side and finishing preliminary bracing; (2) lagging the middle step on the left side, excavating a middle step on the right side, finishing preliminary bracing, and transversely erecting transverse supports on the middle step after the left and right sides of the middle step are completely subjected to preliminary bracing; (3) lagging the middle step, excavating a lower step on the rear part of the right side in a left and right staggered manner, and carrying out preliminary bracing; (4) excavating central reserved core soil and the tunnel bottom, carrying out preliminary bracing on the tunnel bottom and dismantling the transverse supports one by one; (5) after the preliminary bracing of the tunnel bottom, manufacturing an inverted arch in time, and enclosing the inverted arch into a ring as soon as possible. The soft phyllite tunnel excavation deformation control method can be used for effectively controlling the surrounding rock deformation of a tunnel and is high in safety in construction; compared with traditional CD, CRD and double side-wall pilot tunnel methods and other methods, the soft phyllite tunnel excavation deformation control method is simple to operate, and the engineering cost can be greatly reduced.

The invention discloses a method for deformation classification of a soft rock tunnel under the action of high ground stress in squeezed surrounding rock, and provides squeezed carbonaceous phyllite large-deformation classification standards, squeezed carbonaceous phyllite surrounding rock supporting and protecting characteristics and squeezed carbonaceous phyllite prediction and judgment basis. According to the present invention, the method has advantages of strong pertinence, simple and reliable classification method and the like, is suitable for the prediction and analysis of the deformation of soft rock tunnels under the action of high ground stress in squeezed surrounding rock, and can provide guarantee for the safe construction of projects.

The invention discloses a mixing improvement method and blending method for phyllite weathered soil and red clay. The method includes the following step that the red clay is blended into the phylliteweathered soil to form mixed filler of C filler with the liquid limit less than 40%. The method overcomes the restriction that in the traditional method, phyllite weathered soil and red clay can onlybe separated and placed in layers, and the application scope of the soil with special engineering properties is enlarged; the filler meeting the roadbed specifications can be obtained, the engineering properties of mixed filler are improved, the fracture properties of red clay are reduced, and the compaction strength and stability of the phyllite weathered soil are increased; the consumption of the phyllite weathered soil is largely increased, and the harm of abandoned phyllite weathered soil is reduced; the cost of the reinforcing agent improvement method is reduced, the method can be used for filling of railway special lines and freight yard road foundations, and the engineering cost is saved.

The invention provides a construction structure and technology of small clear distance tunnels. The construction structure of small clear distance tunnels comprises a first hole and a posterior hole which are arranged in juxtaposition; the first hole comprises a first hole tunnel face and a first hole second lining end; the first hole tunnel face is arranged at one end of the first hole; the first hole second lining end is arranged at the relative inner side of the first hole; the posterior hole comprises a posterior hole tunnel face and a posterior hole second lining end; the posterior hole tunnel face is arranged at one end of the posterior hole; the posterior hole second lining end is arranged at the relative inner side of the posterior hole; the posterior hole tunnel face is arranged at a corresponding position between the first tunnel face and the first hole second lining end. The construction structure and technology of small clear distance tunnels is specially suitable for the geological situations of phyllite, soft, occurrence steep dip, the trend and route being intersected with small angle, rock stratum having thin layer sheet shape structure, joint developed and rock fragmentation.

The invention provides a low-grade phyllite type lead zinc ore beneficiation method. Through the steps including raw ore levigation, levigation, lead roughing, lead scavenging, lead fine selection, zinc roughing, zinc scavenging, zinc fine selection and the like, lead concentrate and zinc concentrate are finally obtained. Phyllite type lead zinc ore obtained through beneficiation with the method is good in beneficiation index, high in separating effect and suitable for application and popularization, and the beneficiation method is stable, efficient, high in adaptive capacity, good in beneficiation effect, high in comprehensive recovery index and low in production cost.

The invention discloses a structure for limiting horizontal displacement of a pile foundation in a deformable body rock stratum and a construction method, and relates to the technical field of pile foundation construction. The technical problem that in the prior art, construction measures cannot deal with the pile foundation horizontal displacement caused by a phyllite stratum is solved. The structure comprises an anti-deformation structure and a buffer structure, the anti-deformation structure is an annular structure which is arranged on the periphery of the pile foundation and anchored intoa non-deformable body rock stratum, and the buffer structure is arranged between the pile foundation and the anti-deformation structure. According to the structure, the annular anti-deformation structure anchored into the non-deformable body rock stratum is arranged in the range of the deformable body rock stratum; the buffer structure is arranged between the pile foundation and the annular anti-deformation structure; on one hand, the horizontal displacement directly caused by the displacement of the deformable body rock stratum to the pile foundation is prevented through the anti-deformationstructure; and on the other hand, the displacement of the anti-deformation structure is buffered through the buffer structure, so that the deformable body rock stratum is allowed to deform within a certain range, and the horizontal displacement of the pile foundation in the deformable body rock stratum is effectively limited.

The invention belongs to the technical field of metal mine mining, discloses a roadway supporting method for passing through a weak phyllite thrust fault, and solves the problems that a weak phyllitethrust fault area of a metal mine has the characteristics of soft lithology, easiness in weathering, prominent softening and slimming phenomena when meeting water, and has obvious swelling and shrinking property, rheological property, disturbance and the like, and the problems in supporting in the prior art. According to the roadway supporting method for passing through the weak phyllite thrust fault, a steel arch and concrete combined supporting mode is adopted, respective advantages of forepoling, bolt-mesh-spurting supporting, steel arch supporting and concrete supporting are integrated, ayielding principle is combined, and weak surrounding rock is remained for deforming to reach the second equilibrium time of ground stress; the roadway supporting method has a good in-situ supporting effect; the roadway construction quality is ensured, and meanwhile, the secondary supporting probability is greatly reduced; the service life of a roadway is greatly prolonged; the cost is reduced; andtechnical guarantee is provided for safety production of the mine.

The invention discloses a nanowhisker leveling thickener for paint and a preparation method thereof. The nanowhisker leveling thickener is prepared from, by weight, 24-36 parts of attapulgite, 13-25 parts of sericite, 16-28 parts of dolomite, 20-30 parts of kyanite, 15-25 parts of phyllite, 8-16 parts of waste ardealite, 5-10 parts of carbide slag, 3-6 parts of sodium sulfate, 2-5 parts of barium fluoride, 1-3 parts of molybdenum trioxide, 6-12 parts of a modifier A and 4-8 parts of a modifier B. The nanowhisker leveling thickener is excellent in thickening and leveling performance, evident in sagging prevention effect and capable of effectively adjusting paint viscosity and preventing sagging of coatings, thick-layer paint can be achieved, and performance indexes of the prepared paint all reach national standard requirements on first-grade products.

The invention discloses a Phyllite artificial cut slope landslip early warning method featured by comprising the following steps: a, investigating field to plot a landslip body gradient [alpha], a landslip body area A, a landslip body upper side area Au and a landslip body upper side gradient [beta] of a phyllite region artificial cut slope; b, calculating a landform integral discrimination factorT of the phyllite region artificial cut slope according to T=S+1.8U; c, calculating an equivalent rainfall R* and a rainfall factor R; d, calculating a landslip determine value P; e, discriminating the conditions of the landslip determine value P and a landslip critical value Cr. The invention aims at the phyllite region artificial cut slope, studies internal mechanisms of landform factors and rainfall factors on the landslip forming degrees, fully considers phyllite region particularity and soil penetration characteristics, builds an artificial cut slope landslip early warning calculation model, determines the landslip early warning grades in a quantitative mode, and greatly improving the early warning accuracy.

The invention discloses a grading method suitable for a soft rock tunnel deformation grade under an ultrahigh ground stress effect. A judgment basis is provided from five aspects including a surrounding rock grade, ground stress size, underground water development conditions, a strength stress ratio, absolute deformation and relative deformation; weight factors of all evaluation factors are considered on the basis and a surrounding rock deformation degree evaluation index ELD is provided; and the surrounding rock deformation degree can be divided into four conditions including no large deformation, slight large deformation I, middle large deformation II and serious large deformation III based on the surrounding rock deformation degree evaluation index ELD. The grading method can provide a judgment standard for dividing the deformation grade of an extruded phyllite and carbon slate tunnel; and meanwhile, a theoretical basis and method are provided for constructors to comprehensively know the grading of extruded phyllite and carbon slate. The grading method has the advantages of wide applicable range, high testing precision, strong pertinence, simple and reliable grading method and the like, and guarantees are provided for safe construction of tunnel engineering.

The invention relates to a method for improving fully-weathered phyllite by compounding red clay and cement. The method specifically comprises the following steps: adding dry red clay with the mass of m1 and cement with the mass of m2 into fully-weathered phyllite with the mass of m0 for compounding and improving; and forming a C-group filler mixed filler with liquid limit less than 40%, safety factor of real-time ultimate bearing capacity of subgrade surface after rolling compaction beingnot less than 2, settlement less than 15mm and foundation coefficient K30 not less than 130MPa / m, wherein the blending ratio of red clay in the mixed filler ranges from 25.7% to 60%, and the blending ratio of cement in the mixed filler ranges from 3% to 5%. According to the present invention, the optimal blending ratio scheme is provided according to the requirements of common railways and high-speed railways, and the two special soils such as the red clay and the completely-weathered phyllite can be completely utilized, so that the liquid limit and the settlement amount of the completely-weathered phyllite can be reduced, and the safety coefficient of the ultimate bearing capacity and the foundation coefficient K30 can be improved; and the D-group filler is changed into the C-group filler, and the requirements of various indexes of the roadbed can be met.

The invention discloses a method for testing the stone content in a cement stable crushed-stone material. The method comprises the steps of primary separation, chemical analysis, waste liquid treatment and result calculation. Compared with the prior art, the method has the advantages that an acid solution mode is used for removing a cement sample in the cement stable crushed-stone material; a weight difference subtraction method is used for calculating the percentage content of the stone in the cement stable crushed-stone material. The method is applicable to the testing on hard rocks (granite, granitic gneiss, diorite, basalt, quartzite, quartz sandstone, marble, slate, phyllite, schist and sandstone) and the like in the mixing materials; the detection is precision; the operation of the experiment method is easy; the quality control of building construction is improved; the popularization and application values are realized.

The invention provides a construction method for efficiently treating a phyllite base rock surface, which comprises the following steps: S1, determining a construction position for excavation, and cleaning an excavated foundation surface; s2, geological sketching and excavation acceptance inspection are conducted on the cleaned foundation surface; s3, cushion layer concrete construction is carried out on the foundation surface after excavation and cleaning; s4, anchor rod construction is conducted, specifically, drilling is conducted on the solidified cushion layer concrete and phyllite through a drilling machine, and anchor rods are installed and fixed; s5, steel bars are manufactured and installed, a formwork is assembled, a water pump, a slag hopper and an air gun are used for cleaning rock debris generated during anchor rod construction, and then the formwork is assembled; s6, the bin surface is flushed, specifically, the bin surface is flushed through a water pump, and broken stones and the like generated in the construction process are flushed away; and S7, concrete is poured, and bedrock surface treatment is completed. According to the method, the mechanical indexes of the phyllite are prevented from being reduced, so that the foundation surface meets the design requirements, the manual cleaning workload is reduced, the working intensity is reduced, the construction efficiency is improved, the construction period is shortened, the labor cost is reduced, and the construction benefits are increased.

The invention discloses a fine-fraction roasting iron ore full-sealing dry waste-discarding process. The process comprises the following steps that A, refractory iron ore powder with the particle size being -1mm is pelletized, subjected to magnetizing roasting through a rotary kiln, cooled to the temperature below 50 DEG C in a non-air contact manner, and then conveyed by a spiral conveyor to a dispersing device to be dispersed; B, the dispersed powder is fed into a spiral dry magnetic separator through the spiral conveyor, and then full-sealing dry waste pre-concentration and waste-discarding operation is conducted; and C, after full-sealing dry pre-concentration and waste-discarding is conducted, pre-concentration tailings are fed into a tailing bin through the spiral conveyor, and pre-concentration concentrate is fed into a grinding-concentration system for treatment through the spiral conveyor. According to the fine-fraction roasting iron ore full-sealing dry waste-discarding process, -1mm-sized roasting ore is subjected to dry waste-discarding treatment, barren rocks and wall rock are prevented from entering the grinding-concentration system, the phenomenon that the ore is discarded out along with the waste rocks is prevented, the probability of the grinding-concentration cost is decreased, and the problems that iron phyllite and jasper affect separating indexes is solved; and the pre-concentration efficiency is high, the waste-discarding effect is good, it can be controlled that the discarded barren rocks do not contain the iron ore, and wasting of resources is avoided.

The invention provides a construction structure and method for core soil reserved for micro-steps of shallow-buried bias-pressure tunnels under phyllite geology, and uses backfilling, compaction and back-excavation to carry out the construction of turning the open hole into a dark hole; excavate the upper step, and carry out the steel frame arch foot Support; excavate the core soil area and install a temporary inverted arch; excavate the first middle step; excavate the second middle step; set a concrete support layer on the middle step and form a closed ring; excavate the first The lower step is supported by steel arches; the second lower step is excavated and supported by steel arches; the inverted arch is excavated and supported by steel arches; concrete is poured for the inverted arch ; Carry out waterproof layer construction on the main body of the tunnel; carry out lining reinforcement binding and concrete pouring. Avoid long-term disturbance of the hole, causing problems such as ground cracking. To prevent the primary support from intruding into the secondary lining boundary and traction landslides, pre-splitting blasting and milling machines are used to cooperate with construction during excavation to avoid disturbing the strength of the surrounding rock.

The invention discloses a premixed flow state filling material of easily-weathered rock aggregate, which is formed by jointly mixing easily-weathered rock such as limestone, shale, sandstone, schist and phyllite, aggregate composed of bentonite and collapsible loess, a curing agent, an additive and water, and the aggregate is composed of fine aggregate and coarse aggregate. According to the mixed filling material, common engineering soil in the northwest region is used as a raw material, and the mixed filling material which is weak in shrinkage performance, low in consolidation settlement, free of collapsibility, low in permeability, capable of meeting the bearing capacity requirement and low in price and takes the easily-weathered rock as the main body in the backfilling process is provided.

The invention belongs to the technical field of carbon-containing gold ore treatment, and particularly relates to a pretreatment method of carbon-containing gold ores, which comprises the following steps: selecting carbonaceous shale and carbonaceous phyllite type refractory gold ore, putting the ore into a carbon detection instrument, detecting the carbon content in the ore, putting the ore into a reaction kettle if the carbon content is greater than 200g / kg, and reacting for 2-3 hours; adding a sodium carbonate solution into the reaction kettle, inflating the reaction kettle after adding the sodium carbonate solution, reacting for 1-5 hours in the reaction kettle, taking out the ore, detecting the carbon content of the taken-out ore again, putting the detected ore into a jaw crusher, and crushing until the particle size of each block is smaller than 100mm; putting the crushed ore into a sodium hypochlorite generator, and then adding a sodium hypochlorite solution into a sodium hypochlorite generator. According to the pretreatment method for the carbon-containing gold ore, the influence of carbonaceous substances on gold leaching in a cyanide method leaching process of gold can be avoided, and the gold leaching rate is greatly increased.

The invention discloses a supporting structure and a supporting method for limiting horizontal displacement of a steep dip phyllite tunnel. The supporting structure comprises a tunnel body and primarysupporting and secondary lining positioned inside the tunnel body. The tunnel body comprises a vault and a side wall; the tunnel body reserves deformation; and the width of the deformation at the side wall is larger than that at the vault. The supporting structure also comprises anchor rods arranged at the vault and anchor pipes arranged at the side wall, and the anchor rods and the anchor pipesare both anchored into surrounding rocks. The invention aims to provide a supporting structure and a supporting method for limiting the horizontal displacement of the steep dip phyllite tunnel, so asto solve the difficulty of tunnel construction caused by steep phyllite deformation in the prior art, and achieve the purposes of limiting the horizontal displacement of the large deformation of the phyllite tunnel and preventing the large deformation from continuously developing.