116results about How to "Ensure engineering safety" patented technology

The invention relates to the technical field of mine support, and concretely relates to a test bench used for testing the impact load of an anchor rod, and a test method thereof. The test bench comprises an anchor rod used for mine support, and also comprises a work test bench, a driving device, an impact device and an angle encoder, the anchor rod is anchored in the boring model of the work test bench, the driving device is used for driving the impact device to make the impact device obtain initial energy, the impact device is used for instantly bumping an impact beam for arranging an anchor rod pallet in order to apply impact load having an axial direction to the anchor rod, and the angle encoder is used for testing the swing angle of the impact device. The test bench and the test method can realize the stimulation of the anchor rod support work state in a laboratory, can accurately and effectively test the impact load of the anchor rod when surrounding rocks are instantaneously destroyed and release energy, and can realize the sectioning observation of the deformation position of the anchor rod.

The invention provides a grouting treatment method for a broken water-rich section of a diversion tunnel in a karst area. The method includes the following steps: S1) conducting geological explorationon the broken water-rich section of surrounding rock with water inrush to determine a major runoff path of fissure water and/or groundwater; S2) drilling a drainage hole from a tunnel wall of the broken water-rich section of the surrounding rock to the runoff direction of the fissure water and/or the groundwater in the surrounding rock for drainage of the fissure water and/or the groundwater; S3)drilling grouting holes at preset distance along the radial and circumferential directions of the tunnel wall of the broken water-rick section of the surrounding rock and inserting a grouting pipe into each grouting hole; S4) injecting grouting liquid into the surrounding rock through the drainage hole and the grouting pipes to form a water stop curtain circumferentially in the surrounding rock of the tunnel wall. According to the method, a better grouting treatment effect is achieved, the engineering safety is ensured, and the groundwater resource pollution is reduced.

The invention discloses a karst rich water tunnel water-proof and drainage construction method. By adopting the principle of "combination of prevention, drainage, interception and blockage, adaptationto local conditions and comprehensive treatment" and a water-proof method of combining water-proof with drainage is introduced to ensure the realization of project safety and quality objectives. Thekarst rich water tunnel water-proof and drainage construction method solves the problems that the difficulty of construction of a karst rich water tunnel such as an iron helmet mountain is high, the existing construction method cannot be applied well, and many potential safety hazards exist. The invention belongs to the technical field of tunnel construction.

The invention discloses a high polymer grouting reinforcement material which comprises a component A and a component B. The component A comprises 100-120 parts of isocyanate, 3-5 parts of plasticizers, 0.5-1.5 parts of glycerol and 0.4-1.0 part of foam stabilizers. The component B comprises 60-70 parts of polymer polyol, 25-45 parts of inert diluents, 20-30 parts of flame retardants and 0.5-1.0 part of catalysts. The high polymer grouting reinforcement material is high in curing reaction speed, adjustable in curing time and low in curing reaction heat release, the possibility of smoldering and explosion of cured coal and rock masses can be greatly reduced when the high polymer grouting reinforcement material is applied to coal mine grouting reinforcement, foaming rate is low, foam is uniformly distributed, solids can reach 45-60MPa, engineering construction requirements are completely met, and engineering safety is guaranteed. Preparation steps are simple, operation is facilitated, and practicability is high.

The invention relates to the technical field of mine supporting, in particular to a test bed for installing and pre-tightening of an anchor rod and a test method. The test bed comprises the anchor rod for mine supporting and further comprises a pre-tightening device, a stretching device, a work test bed body, a dynamic torque sensor, a static torque sensor and a load sensor. One end of the anchor rod is anchored into a drill hole model of the work test bed body. The pre-tightening device is used for exerting pre-tightening force to the anchor rod. The stretching device comprises an impact beam and a stretching top beam, and the other end of the anchor rod is fixed to the impact beam. The stretching top beam corresponds to the impact beam and is used for preventing the impact beam from moving in the axial direction of the anchor rod. The installing and pre-tightening process of the anchor rod is simulated in a laboratory through the test bed, transformation of the tightening torque of an anchor rod nut and the axial pre-tightening force of the anchor rod is accurately tested, the torque borne by a rod body is tested after the anchor rod is installed and pre-tightened, and the test bed for installing and pre-tightening of the anchor rod is of great importance in deepening the mechanism study of anchor rod supporting and ensuring engineering safety.

The invention discloses a construction method for single-piece hoisting of an aluminum alloy vault of a large vertical storage tank. The aluminum alloy vault is fitted to the top of the large vertical storage tank in a covering manner; the aluminum alloy vault comprises a support frame and an outer mask covering the support frame; the support frame comprises a central connector and a plurality of ring beams distributed outside the central connector from inside to outside; the outer mask comprises a middle mask and a plurality of circumferential masks; the outermost one of the circumferential masks is an outer circular mask. The construction method includes: 1, assembling the aluminum alloy vault and a tank bottom; 2, mounting a tank top lift, namely, mounting the lift used for hoisting the required vault, outside the upper portion of the tank which is cylindrical; 3, hoisting the aluminum alloy vault; 4, fixing the aluminum alloy vault; 5, mounting the outer circular mask. The construction method has the advantages that steps are simple, the design is reasonable, construction is easier, construction is efficient, construction effect is good and the aluminum alloy vault can be hoisted to the large vertical storage tank simply and quickly.

The invention relates to the technical field of mine support, and particularly relates to a test bed for testing the shear load of an anchor rod and a test method of the test bed. The test bed comprises an anchor rod for mine support, a working test board, a shearing device, a fixed drilling model, a follow-up drilling model and a hydraulic sensor, wherein the anchor rod is anchored in drilling holes of the fixed drilling model and the follow-up drilling model; the fixed drilling model is mounted on the working test board; the shearing device drives the follow-up drilling model to slide along the radial direction of the anchor rod; a shearing surface against the anchor rod is formed between the fixed drilling model and the follow-up drilling model; the hydraulic sensor is mounted on a loading oil way system of a shearing oil cylinder and used for testing the pressure of the oil cylinder system of the shearing device. Through the test bed, the test of the shearing resistance of the anchor rod in a laboratory is realized, a basis is provided for the theoretical study on the anchor rod support and the anchor rod support design in complicated stress conditions, and thus the test bed has great significance on deepening of the mechanism study on the anchor rod support and guaranteeing of the engineering safety.

The invention discloses a big-discharge efficient energy dissipater structure of a narrow river valley arch dam. Aiming to solve the problems that under the conditions of a narrow river valley and a deluge, the conventional arch dam project easily causes serious downstream washing damage and stability of slopes on the side banks is affected, the big-discharge efficient energy dissipater structure of the narrow river valley arch dam is structurally characterized by including flood discharge surfaces holes and flood discharge deep holes in the arch dam body at the river bed, and a downstream plunge pool of the arch dam, wherein the surface holes and the deep holes are flaring piers, and the bottoms of the openings of the surface holes and the deep holes are connected with flip buckets. The big-discharge efficient energy dissipater structure provided by the invention is capable of discharging deluge and endowed with the function of excellent energy dissipation, meets the requirement for safe flood discharge, meanwhile better solves the difficult problem of downstream energy dissipation, and ensures the project safety.

The invention relates to an anchor rod ultimate anti-pull force design parameter optimization design method under different expansion agent contents in rock and soil masses. According to acquisitionsof field experiments, the anchor rod ultimate anti-pull force of a rock mass reaches 147 percent of the anti-pull force of ordinary cement or above; the anchor rod ultimate anti-pull force of a soil mass reaches 179 percent of the anti-pull force of ordinary cement or above; and known that compared with the traditional anchoring technology, for a expansion cement slurry anchoring technology, the anchor rod anti-pull force is greatly improved. The expansion cement mortar anchoring technological design parameter optimization design method performs calculation and analysis from three aspects of soil layer and anchoring force, steel bar strength and M30 mortar and correspondingly reduces the drilling diameter, the steel bar cross section and the drilling depth under the condition of ensuring invariable anchorage body ultimate anti-pull force. In the premise of ensuring the engineering safety, anchor rod design parameters are optimized, and the method can remarkably lower the engineering cost and has wide engineering application prospect and popularization value.

The invention discloses a loess high-fill furrow foundation drainage structure and a laying method thereof. The drainage structure comprises a main blind ditch laid on an original loess foundation inthe extending direction of a main ditch in an original valley terrain, and a secondary blind ditch laid on the original loess foundation in the extending direction of a branch ditch in the original valley terrain and communicating with the main blind ditch. The elevation of a base surface at a communication position of the secondary blind ditch and the main blind ditch is equal to that of the basesurface of the main blind ditch at the position; and the cross section of the secondary blind ditch and the cross section of the main blind ditch are full-gravel cross sections. The laying method comprises the following steps: 1, cleaning surface soil of the original loess foundation and carrying out topographic survey; 2, constructing the main blind ditch; 3, constructing the secondary blind ditch; 4, communicating the secondary blind ditch with the main blind ditch; 5, investigating whether a steep rock slope exists in the construction area or not; and 6, constructing a vertical drainage blind ditch. The loess high-fill furrow foundation drainage structure is stable in structure, large in porosity, smooth in drainage, high in anti-clogging performance and capable of effectively solvingthe drainage problem of an existing loess high-fill project original valley foundation.

The invention discloses a configuration design method for an anti-explosion container made of a hybrid fiber composite material, and a configuration evaluation criteria. A created energy absorptivity criteria provides a judgment method for optimizing of the anti-explosion container made of the hybrid fiber composite material, and provides an optimal configuration of the anti-explosion container. The configuration design method is characterized by comprising the following steps: constructing an initial anti-explosion container configuration meeting preset conditions; parameterizing an anti-explosion container geometrical configuration; optimizing the initial anti-explosion container configuration according to a multi-island genetic algorithm to obtain a locally optimal solution area of the initial anti-explosion container configuration; carrying out globally optimal solution of the initial anti-explosion container configuration according to a gradient algorithm; evaluating an optimal anti-explosion container configuration according to energy absorptivity. The configuration design method has the advantages that the initial configuration of the anti-explosion container is optimized, so as to provide the optimal configuration; the defects that the conventional metal anti-explosion container is heavy and poor in energy absorptivity are overcome, and the configuration of the anti-explosion container is improved by changing the thickness of a paved layer, so that the energy absorptivity of the anti-explosion container is greatly improved, and engineering safety is guaranteed.

The invention discloses a construction method for a steel guide wall foundation of a sew area deep-water anchor foundation, and the construction method is applied to suspension bridge anchor foundation construction of sea area deep-water. The construction method comprises a foundation treatment step, an auxiliary steel platform set-up step, a steel guide wall construction step, an even wall slot section division step, an II-stage slot sand backfilling step, an I-stage slot construction step, and an II-stage slot construction step. According to the construction method disclosed by the invention, foundation treatment is performed at an early stage to improve geological conditions, the auxiliary steel platform is set up to create land-area working conditions, steel tube piles are positioned,inserted and punched to inner and outer sides of the axis of an even wall, and construction on the even wall is performed, so that the effects of supporting, retaining water and retaining waves are realized for later-stage foundation pit excavation. The construction method solves the technical problems such as construction hole collapse, a relatively long construction period and disassembly afterconstruction as sea suspension bridge deep-water anchor construction in the prior art needs cofferdams for building an island, reduces construction risk, shortens the construction period, and providesa novel technical method for constructing and applying a cross-sea channel kilometric suspension bridge.

The invention discloses a traffic load damping structure and a construction method, in accordance with that present invention, A macadam partition wall is arrange between that outer side of the edge of the roadbed and the pavement and a plurality of pile foundation, The gravel partition wall extends along the longitudinal direction of several piles, thus effectively reducing the disturbance of traffic load vibration wave to the newly-poured concrete of pile foundation. The vibration-absorbing structure also has the following characteristics: first, it has strong pertinence and is especially suitable for the newly-poured concrete construction of bridges in highway reconstruction and expansion; Second, the design of damping structure is quantitative, the scale of gravel partition is reasonable, and the efficiency is improved. Third, adding anti-disturbance admixture to pile foundation concrete to further improve the quality assurance rate of pile foundation concrete. Therefore, by designing this kind of traffic load damping structure and combining with the corresponding construction method, it has the advantages of simple structure, convenient use, reasonable structure, energy savingand emission reduction, enhancing the durability of the engineering structure, etc., and can ensure the quality and safety of the engineering, and the economic and social benefits are remarkable.

The invention relates to emulsified oil and application thereof. The problems that in the prior art, solid wire drawing powder can produce dust floating in air in the use process and bad affects are caused to human respiratory systems are mainly solved. The emulsified oil is prepared from, by weight, 1-5 parts of anti-wear reagents at extreme pressure, 5-15 parts of surface active agent, 5-15 parts of antirust agent, 5-15 parts of oiliness agent, 0.01-0.1 part of antifoaming agent, 0.1-1.0 part of bactericide, 5-10 parts of water and 60-80 parts of refined mineral oil. By means of the technical scheme, the problems are well solved, and the emulsified oil can be used for industrial production of ordinary low-carbon steel wire drawing emulsified oil.

The invention discloses a transition piece for surface casing feeding based on non-drilling machine time well cementation and a feeding method. The transition piece comprises a drill rod connecting part and a casing connecting part which are distributed up and down, wherein the casing connecting part is sequentially provided with an external thread section I, a convex ring and an external thread section II from top to bottom, and the external thread section II is matched with a connected casing female buckle; the transition piece further comprises a sleeve arranged outside the casing connecting part in a sleeving mode, the inner wall of the sleeve is provided with an internal thread section matched with the external thread section I, and the bottom of the sleeve is provided with a plurality of annularly distributed bearing assemblies; and when the top surface of a connected casing coupling makes contact with the bottom surface of the convex ring, the external thread section II is in threaded connection with the connected casing female buckle, and the bearing assemblies support the bottom surface of the connected casing coupling. The transition piece is used for solving the problemsthat in the prior art, the requirement for driller experience is high, and the transition piece is difficult to release after a casing is fed in place, and the purposes of facilitating connection andrelease between the transition piece and the casing, reducing the operation difficulty and improving the operation efficiency are achieved.

The invention relates to a building component, in particular to a clamping seat enclasping tile type lightning protection net for building construction. The clamping seat enclasping tile type lightning protection net comprises galvanized round steels, galvanized flat steels, galvanized screws, sealing rubber rings, galvanized gaskets, a lightning wire, buckling tiles and roof tiles; the middle positions on the galvanized flat steels are connected with the galvanized round steels; the upper ends of the galvanized round steels are connected with the lightning wire; saw kerfs are formed at the positions where the roof tiles are joined with the buckling tiles; screw holes are formed at both ends of the galvanized flat steels; holes are reserved at both tail ends of the buckling tiles; the sealing rubber rings are arranged between the galvanized flat steels and the buckling tiles; the galvanized gaskets are arranged between the galvanized screws and the galvanized flat steels; the galvanized flat steels are connected with the buckling tiles by the galvanized screws; the tail ends of the galvanized screws are embedded into the saw kerfs of the roof tiles; the galvanized screws are tightly connected with each contact point. The connecting mode of the clamping seat enclasping tile type lightning protection net adopts the advanced technology; the clamping seat enclasping tile type lightning protection net is simple and convenient to operate and is convenient to install, move and repair; the clamping seat enclasping tile type lightning protection net avoids the problem that when holes are formed in the tops of the buckling tiles for installation, not only is labor wasted, but also quality defects of roof rain leakage and the like are easy to cause.