47 results about "Seismic stability" patented technology

The invention discloses a polymer grout injected earth-rock dam and a construction method thereof. The polymer grout injected earth-rock dam comprises rockfill, polymer grout injected rockfill and a face slab. A dam body is built with the rockfill, with the rockfill and a clay core wall or with the face slab and the rockfill by filling. Overall dam grouting or grouting on the upstream surface and the downstream surface of the dam body are performed during filling. The problems that conventional earth-rock dam allows no passage of water, accelerations at the top of the dam are high, the rockfill mass is easy to loosen and the like are solved, and the polymer grout injected earth-rock dam is simple in structure and convenient in construction, has evidently improved seismic stability, has wide application prospect and is an economical and practical dam.

The invention discloses a special-purpose casting material of a coal-injection duct. The special-purpose casting material comprises the following components in percentage by weight: 5%-15% of silicon carbide, 15%-30% of andalusite, 10%-25% of corundum, 5%-15% of spinel powder, 15%-20% of silicon boride powder, 5%-10% of zirconite powder, 5%-10% of mullite powder, 5%-15% of aluminum oxide micro powder, 3%-8% of silicon micro powder, 2%-5% of pure calcium aluminate cement, as well as anti-explosion fiber and sodium hexametaphosphate which respectively account for 0.3% of the total weight of the components. The special casting material of the coal-injection duct disclosed by the invention has seismic stability, high temperature resistance, volume stability and abrasive resistance, has high strength, and can be used for improving the defects that the coal-injection duct is not wear-resisting and not thermal-spalling-resistant, so that the service life of a cement kiln coal-injection duct is prolonged to about 12-15 months from about 6-8 months at present.

The invention relates to a double limb energy-consuming anti-slide pile and a construction method thereof. The anti-slide pile comprises a main limb pile body, an auxiliary limb pile body, a sliding pair and a energy consumption linkage system, a main limb pile body anchorage section of a large cross section of the lower portion of the main limb pile body forms the anchorage section of the anti-slide pile, and a small section of the upper portion of the main limb body forms a main limb pile body bearing section; the auxiliary limb pile body is located near the side of a mountain, and the bottom of the auxiliary limb pile body is connected with an variable section of the middle of the main limb pile body through the sliding pair so that the auxiliary limb pile body can be horizontally displaced relative to the main limb pile body; the auxiliary limb pile body, the energy-consuming linkage system and the main limb pile body bearing section constitute the bearing section of the anti-slidepile. When an earthquake occurs, a certain relative displacement is allowed between the auxiliary limb pile body and the main limb pile body, the energy-consuming linkage system can effectively dissipate the seismic input energy and ensure the function of the main limb pile body within the allowable displacement range, and the purpose of seismic energy consumption and protection of the anti-slidepile is achieved to improve the seismic stability of a slope and ensure the normal working performance of the anti-slide pile after the earthquake.

The invention discloses a slope seismic stability time frequency analysis method comprising the following steps: carrying out experience modal decomposition for measured seismic wave time histories, thus forming a plurality of intrinsic modal functions; carrying out Hilbert transformation for each formed intrinsic modal function, thus obtaining a time frequency spectrum of each intrinsic modal function, and extracting time, frequency and amplitude of the seismic wave time history from the time frequency spectrum; calculating a stress state on a slope bedding plane according to separated amplitude and instantaneous frequency of each intrinsic modal function; accumulating calculation results of all intrinsic modal functions, thus obtaining the stress state of the slope bedding plane under the seismic wave time history effect; calculating a sliding force and an anti-sliding force of the slope bedding plane under the seismic wave time history effect; calculating a safety factor of the slope stratified slope. The method can fully consider the seismic wave time-frequency-amplitude factors when making time frequency analysis on the slope seismic stability, thus obviously improving the slope seismic stability evaluation accuracy and reliability.

The invention discloses a composite high-temperature-resistant refractory material, and belongs to the technical field of refractory materials. The composite high-temperature-resistant refractory material comprises the following raw materials in parts by weight: 10-15 parts of quartz sand, 32-34 parts of clay, 5-7 parts of superlight clay, 22-26 parts of magnesium carbonate, 12-16 parts of dolomite, 40-45 parts of corundum, 5-8 parts of graphite, 4-12 parts of calcium fluoride, 7-9 parts of diboron trioxide, 15-17 parts of iron trioxide, 3-5 parts of zirconium dioxide, 3-5 parts of chromic oxide and 1-6 parts of a bonding agent. The invention further discloses a preparation method of the composite high-temperature-resistant refractory material. The composite high-temperature-resistant refractory material has relatively high mechanical strength, wear resistance and seismic stability, and the service life of the high-temperature-resistant refractory material is prolonged.

The invention discloses a fired clay hollow brick with low thermal conductivity and a preparation method thereof. The brick is prepared from the following raw materials (by weight): 23-35 parts of yellow phosphorus slag, 18-27 parts of arsenic sandstone area, 20-25 parts of vermiculite, 9-14 parts of yellow dextrin, 10-15 parts of nanoporous silica aerogel, 22-28 parts of oyster shell, 5-10 parts of hydroxyethyl cellulose, 14-22 parts of sepiolite, 8-12 parts of sawdust, 7-13 parts of zirconia and a proper amount of water. The fired clay hollow brick prepared from raw materials including coal cinder, sawdust, nanoporous silica aerogel, cement dust and the like has characteristics of low heat conductivity coefficient, high strength, corrosion resistance, ageing resistance and good seismic stability.

The invention relates to a novel air conduit. The novel air conduit comprises a base material pipe; a wrapping layer is reserved on the outer wall of the base material pipe; a fusible material is installed in the wrapping layer; the inner surface of the base material pipe is a composite heat reflecting layer, and the inner surface of the heat reflecting layer is additionally provided with an activated carbon layer; and the base material pipe is provided with a noise reducing hole. After the structure is used, the novel air conduit is green and environment friendly, and capable of purifying the impurities in the air, and eliminating the noise, and has the strong seismic stability; and in the high temperature, the fusible material in the wrapping layer is fused by absorbing the heat, so the air conduit is expanded by heating, and a cavity is formed in the wrapping layer, the heat-resisting effect is enhanced.

The invention relates to a refractory material, specifically high temperature resistant inorganic clay, which is composed of the following raw materials (by weight): 20-35 parts of 1.5-2.5 mm quartz, 20-35 parts of kaolin, 5-10 parts of graphite, 2-4 parts of yttrium oxide, 10-15 parts of aluminium dihydrogen phosphate, 5-10 parts of copper oxide and 2-4 parts of talcum powder. The high temperature resistant inorganic clay provided by the invention has good anti-stripping performance and seismic stability, and prolongs service life of a furnace kiln.

The invention discloses an earth slope seismic stability analysis method combining an equal parameter unit method and a sliding surface method. The earth slope seismic stability analysis method comprises the following steps that firstly, the static load is applied in a grading mode, according to the change conditions of the stress strain in the soil after applying static load of each stage, and the mechanical parameters are corrected, a constitutive model is constructed as a mathematical model of the stress-strain relation according to actual stress strain characteristics, after all the staticloads are applied, and the calculated accumulated stress is the static stress in the preseismic earth slope; then, according to the anti-seismic design requirements of the earth slope, an earthquakeacceleration time-range relation is determined, and then inputting is carried out by adopting a two-stage time period method; and finally, the static force and the power reaction are calculated, and the effective force of certain points in the soil slope is obtained. According to the earth slope seismic stability analysis method, the problem that in the prior art, an earthquake, an soil slope structure and a power characteristic of the material cannot be considered at the same time in the soil slope stability analysis is solved.

The invention discloses an earthquake inertia force calculation method for a rock slope of a Xigeda group stratum, and belongs to the technical field of rock slope stability analysis. According to theinvention, an equivalent calculation method of rock mass parameters is adopted to simulate the nonuniformity of the rock mass distribution of the Xigeda group stratum; the spatial dispersion of the rock slope is realized by adopting the triangular units; meanwhile, seismic waves are assumed to be simple harmonic sine waves; a calculation mathematical model of the seismic inertia force of the rockslope of the Xigeda group stratum, which can consider the non-uniformity of rock mass distribution, the spatial effect of seismic wave propagation and the time effect at the same time, is established, so that the result of the seismic inertia force of the rock slope of the Xigeda group stratum acquired by the method is more accurate and convenient than that acquired by adopting a traditional method; the method can be applied to analysis of the seismic stability of the rock slope of the Xigeda group stratum, reliable and accurate seismic inertia force can be provided for slope design, and themethod is development and improvement of a rock slope seismic inertia force calculation method.

The invention discloses a time-frequency analysis method for seismic stability of a high and steep slope, which comprises the following steps: acquiring topographic data and rock-soil mass mechanical parameters of a target area, establishing a corresponding geological analysis model, and carrying out gridding processing on a sliding mass structural surface in the geological analysis model; obtaining a design response spectrum curve of the target area, and determining a seismic oscillation acceleration time history curve of the target area; randomly selecting one point on the gridding slip mass structural surface, and calculating a seismic oscillation displacement time travel curve of the reflected wave and the transmitted wave at the point according to the seismic acceleration time travel curve; and calculating an intrinsic mode function and a frequency time-history curve corresponding to the seismic oscillation displacement time-history curve by using a Hilbert-Huang transform algorithm. The method can solve the problem that it is difficult to consider the duration, frequency and distribution difference of seismic waves at the same time in the prior art, and is comprehensive in covering influence factors, reliable in calculation and wide in application range.

The invention discloses a high-temperature refractory material and relates to the technical field of refractory materials. The high-temperature refractory material of the present invention is prepared from the following raw materials in parts by weight: 0.1-1.5 parts of nickel-cobalt alloy, 25-60 parts of magnesium oxide, 0.3-1 part of titanium dioxide, 0.1-1 part of alumina, 2 parts of borax 1 to 3 parts, 0.5 to 1.8 parts of binder. The high-temperature refractory material of the invention has better mechanical strength, abrasion resistance and shock resistance stability, and longer service life.

The invention discloses a high and steep slope earthquake instability early warning method under the interaction of a pier stud-pile-soil foundation and application of the high and steep slope earthquake instability early warning method. The high and steep slope earthquake instability early warning method comprises the steps that monitoring rods are arranged between a pier pile foundation and an anti-slide pile of a high and steep slope, from the position above the anti-slide pile to a slope top, from the position below the anti-slide pile to a slope toe and the like; earthquake horizontal acceleration and soil pressure of a soil body and a bending moment value of the monitoring rods are measured through horizontal accelerometers, soil pressure boxes and strain gauges on the monitoring rods; and then data are transmitted to a remote server through a data transmission unit, the stability condition of the high and steep slope is monitored in real time, and early warning is provided for management personnel through an earthquake occurrence alarm unit and a post-earthquake alarm unit. According to the invention, real-time post-earthquake monitoring is carried out on the complex geological condition under the interaction of the pier stud-pile-soil foundation of the high and steep slope, the cost is low, the service life is long, the operation is convenient, and the earthquake stability of the complex underground space of the high and steep slope can be effectively evaluated.

The invention discloses a compact shelving body interlocking device with a shockproof function, which comprises a hook lock assembly arranged on a main lock frame body, the hook lock assembly at least comprises a hook lock bracket and a hook lock, the hook lock is provided with a hook part, and the hook part is arranged on the hook lock bracket; the hook lock is movably arranged on the hook lock support so that the hook lock can move to a first position and a second position relative to the hook lock support. The hook lock opening hole is used for being formed in a locked frame body, the hook lock opening hole and the hook lock assembly are correspondingly arranged, and when the hook lock is in the first position state, the hook part extends into the hook lock opening hole so that the main lock frame body and the locked frame body can be relatively locked. The anti-seismic stability of the compact shelf can be improved.

The invention discloses an anti-seismic device for buildings. The anti-seismic device comprises a base and a connecting top plate between which a seismic reduction structure and a floating slab are arranged, wherein the seismic reduction structure comprises a cylinder body, an oil cylinder, a propping top plate, a spring, a wane and a rotating shaft; the bottom end of the cylinder body is fixed in the middle of the base; the bottom end of the oil cylinder is welded and fixed on the bottom wall of the cylinder body, and the height of the oil cylinder is smaller than that of the cylinder body; a piston shaft of the oil cylinder is fixed in the center of the bottom surface of the propping top plate; the spring is positioned between the propping top plate and the top wall of the cylinder body; an insert cavity is formed in the middle of the floating slab; and the middle of the wane is connected to the top wall of the cylinder body through the rotating shaft, the outer side end of the wane extends into the insert cavity, and the inner side end of the wane is positioned in the cylinder body and positioned under the propping top plate. The anti-seismic device for the buildings is reasonable in structural arrangement, and can effectively play an anti-seismic role, the use stability and the use reliability are improved, the technical problem of poor anti-seismic stability in a traditional technology is solved, the applicability is strong, and the practicability is high.