53results about How to "Reduce the possibility of collapse" patented technology

The invention relates to a water sealing joint device of a large-depth underground continuous wall. The water sealing joint device consists of a water sealing connector plate and a rubber water stop; the water sealing connector plate comprises connector side plates connected in sequence, two arc shape plates, an H-shaped groove plate, an upper end plate and a lower end plate; the two arc shape plates are oppositely arranged in the middle at intervals along the width of a connector side plate, and the H-shaped groove plate is arranged in the middle between the two arc shape plates; the H-shaped groove plate has two opening ends, one end is fixed and connected with the two arc shape plates, and the other end is fixed and connected with the connector side plate; and the upper end plate and the lower end plate are arranged at the end parts of the two arc shape plates and the H-shaped groove plate. An opening slot is arranged at the middle part of the upper end plate and the lower end plate, and the rubber water stop is embedded in a gap between the opening slot and the opening end of the H-shaped groove plate. The connector side plate adopts a long strip shape thick steel plate, the upper end plate and the lower end plate adopt semi-circular steel plates, and the composite cross section of the two arc shape plates is matched with the shape of the upper end plate and the lower end plate. The depth of the opening slot of the upper end plate and the lower end plate is approximately identical to half of the width of the rubber water stop. The invention can improve the prior construction process, reduce the construction cost, and effectively improve the water sealing performance of the structure of the underground continuous wall.

The invention discloses an underground diaphragm wall steel lagging box construction method. It includes the following steps: forming groove segment to groove; cleaning hole; pouring concrete; cutting into steel lagging box; doing as the same for the adjacent; drawing out; cutting it into the second finished groove segment; filling back the first cavity by earthwork. The method adopts í‹one male and one femaleíŒ groove segment jumping type to use steel lagging box to construct. It can reduce the possibility of sinking and collapsing of approach wall, and the influence on groove wall earth from outer loading. It has the advantages of fast construction speed, good foundation ditch lump protection effect, and obvious economic benefit.

The invention relates to a sodium ion battery positive electrode material with a multi-core type core-shell structure and a preparation method thereof, the sodium ion battery positive electrode material with the multi-core type core-shell structure comprises a plurality of particles, and each particle comprises a core and a shell wrapping the outer side of the core. The core is composed of a plurality of inner cores, and a gap exists between any two adjacent inner cores in the plurality of inner cores. The plurality of inner cores are made of two or more than two nanoscale particle materials with the same or different structures. The nanoscale particle material is one or more of a layered structure material, a tunnel structure material, a polyanion compound and a large-frame compound material. According to the sodium ion battery positive electrode material, advantages of the structure and the performance can be complemented on the nanoscale level, defects can be made up, and the due advantages of the sodium ion battery positive electrode material can be better exerted compared with simple mixed use and smearing of the sodium ion battery positive electrode material on a pole piece. The invention also provides a preparation method of the sodium ion battery positive electrode material.

The invention discloses a hydrocracking catalyst carrier and a preparation method thereof. The carrier consists of a small crystal particle Y-shaped molecular sieve and alumina, wherein the small crystal particle Y-shaped molecular sieve has high crystallinity, high ratio of silicate to aluminium, continuous and stable framework structure and smooth pores. A hydrocracking catalyst prepared from the carrier has the characteristics of high catalytic activity, high heavy naphtha selectivity, high potential aromatic hydrocarbon content, low bureau of mines correlation index (BMCI) value of hydrocracking tail oil and the like.

The invention discloses a super high-rise building deep foundation pit and a construction method thereof, relates to a foundation pit and aims to solve the technical problem in the prior art that water is prone to permeating into the foundation pit. The super high-rise building deep foundation pit and the construction method thereof are characterized in that the super high-rise building deep foundation pit comprises a pit body arranged in a soil body and a plurality of continuous walls arranged at the outer edge of the pit body in a surrounding manner, a plurality of supporting protecting piles arranged on the sides, close to the pit body, of the continuous walls and supporting components for supporting the supporting protecting piles, wherein the pit body is internally provided with vertical column components for fixing the supporting components, and the multiple supporting protecting piles are arranged in the circumferential directions of the continuous walls; when construction is performed, the continuous walls are cast and the supporting protecting piles are hit in, then the pit body is excavated, then the vertical column components and the supporting components are fabricated,so that the supporting protecting piles are supported, and the possibility of foundation pit collapse can be reduced; and by means of two-layer protection of the continuous walls and the supporting protecting piles, groundwater permeating into the foundation pit from positions between the continuous walls and the positions between the supporting protecting piles can be reduced, and reduction of construction influence of the permeating water on the foundation pit is facilitated.

The invention relates to the technical field of soft foundation road reinforcement, in particular to a municipal soft foundation road reinforcing method. The method comprises the steps that a field isleveled, and pile positions are determined; each pile position is downwardly drilled by one unit depth by taking the ground as a reference surface, and a soil body is removed to form a pile hole; thelower part of the hole wall of each pile hole is extruded and expanded in the circumferential direction to form a branch cavity; pile casings are lowered into the pile holes, the bottom ends of the pile casings abut against the bottom faces of the pile holes, grouting is conducted in gaps between the pile casings and the hole walls of the pile holes till gaps between the branch cavities and the pile holes and the gaps between the pile casings and the hole walls of the pile holes are filled with grout, and branch piles are formed after the grout is solidified; drilling is further performed bytaking the bottom surfaces of the pile holes as a reference surface, and the aforesaid steps are repeated until the pile holes are machined to a required depth; and grout is poured into all sections of the pile casings and the grout is solidified, where in the vertical direction, the outer diameter of a pile casing on a lower layer is smaller than or equal to the inner diameter of a pile casing onan upper layer, and the heights of all sections of the pile casings are equal. The reinforcing method has the effect that the branch pile forming quality is high.

The invention relates to a foundation pit roadbed backfill structure, and is applied to the technical field of building construction. The structure comprises a foundation pit, concrete retaining wallsare arranged on all inner side walls of the foundation pit, the foundation pit is filled with foamed concrete, a cement concrete subbase is poured on the foamed concrete, the two ends of the cement concrete subbase extend to the ground outside the foundation pit, and cement stabilized macadam is laid on the cement concrete subbase. The foundation pit roadbed backfill structure has the effect ofreducing the possibility of foundation pit collapse.

The invention discloses a foundation pit supporting structure and a construction method thereof. The foundation pit supporting structure comprises a plurality of baffles arranged on the inner side wall of a foundation pit, wherein all the baffles are sequentially arranged in the circumferential direction of the foundation pit, and a plurality of connecting rods are connected between each baffle and the inner side wall of the foundation pit; a connecting hole penetrates the position, located on each connecting rod, of each baffle in the thickness direction of the baffle, a mounting hole is formed in the position, located on each connecting hole, of the foundation pit, and one end of each connecting rod is inserted into the corresponding mounting hole through the corresponding connecting hole; an abutting rod used for abutting against the inner side wall of each mounting hole is rotationally arranged at the end, located in the mounting hole, of the corresponding connecting rod, and a driving assembly used for driving each abutting rod to rotate is arranged between the abutting rod and the corresponding connecting rod; and an abutting block abutting against the side, away from the corresponding mounting hole, of each baffle is arranged at the end, away from the corresponding abutting rod, of each connecting rod. After construction in the foundation pit is completed, constructors disassemble the connecting rods, and then the baffles can be disassembled, so that the baffles can be repeatedly used, and the construction cost can be reduced.

The invention discloses a method for earlier excavation and later supporting of a groove in foundation construction and relates to the technical field of building construction. The technical solutionis characterized by comprising the steps of (a) excavation of the groove, (b) installation of supporting devices and (c) installation of a drainage device, wherein at the step (a), the groove is excavated on a soil layer according to a drawing; at the step (b), the multiple supporting devices are installed in the groove, and two side walls of the groove are supported by the multiple groups of supporting devices; and at the step (c), the drainage device is installed in the soil layer beside the groove, and water in the soil layer is discharged by the drainage device. The method disclosed by theinvention can reduce possibility in groove collapse through setting of the supporting devices.

The invention discloses a coal mine underground complex stratum directional drilling pressure control drilling system. The system involves a drill rod, a sealing pipe, a water release bin, a liquid outlet pressure control assembly and a liquid inlet pressure control assembly, wherein the drill rod stretches into a drill hole, an annulus is formed between the drill rod and the drill hole, the sealing pipe is fixedly embedded into an inlet of the drill hole so that mixed liquid in the annulus can flow to outside through the sealing pipe, the sealing pipe is connected with the water release bin through a flange, the bottom of the water release bin is connected with the liquid outlet pressure control assembly, and the liquid outlet pressure control assembly can adjust the plugging area of a liquid outlet so that the liquid outlet pressure of the mixed liquid in the annulus can be controlled. According to the system, the end, away from the drill hole, of the drill rod sequentially penetrates through the sealing pipe and the water release bin so as to enable a center hole in the drill rod to be connected with a faucet, the other end of the faucet is connected with the liquid inlet pressure control assembly, and the liquid inlet pressure control assembly can conduct pressurization pressure control in a pulse mode while continuously feeding liquid to the center hole in the drill rod, so that the bidirectional pressure control is realized.

The invention relates to the technical field of municipal construction and discloses a non-motor vehicle road surface mechanism. The non-motor vehicle road surface mechanism comprises a basic soil layer, a traveling section, a green section, a power ditch, a connecting block and cover boards. Multiple curbs used for corresponding to the multiple cover boards are arranged on the two sides of the traveling section. Installation blocks are arranged on the side walls of the sides, close to each other, of the curbs on the two sides. The two ends of each cover board abut against the upper surfaces of the corresponding installation blocks on the two sides. A connecting piece used for connecting two adjacent curbs is arranged between the two adjacent curbs located on the same side. Only one coverboard is arranged in the direction perpendicular to the extending direction of the traveling section, so that the phenomenon that the settlement degrees of the cover boards in the direction perpendicular to the extending direction of the traveling section are different is avoided; and each connecting piece is used for limiting the two adjacent curbs, at the moment, the two adjacent cover boards simultaneously settle at the same degree, and finally the possibility that a road surface is uneven can be reduced.

The invention discloses a supporting device with a protection function for coal mine safety construction. The supporting device with the protection function comprises a base, a first supporting columnis connected to the base, a second supporting column is arranged on the first supporting column, the first supporting column and the second supporting column are sleeved with sleeves, a top plate isconnected to the end, away from the first supporting column, of the second supporting column, and an upper baffle is arranged in the top plate; and the end, located outside the top plate, of the upperbaffle is connected with a handle, the end, away from the handle, of the top plate is connected with a side baffle, an extension plate is arranged in the side baffle, and cavities are formed in the sleeves and located between the first supporting column and the second supporting column. According to the supporting device, through arrangement of corresponding mechanisms on the coal mine supportingdevice, the supporting device can effectively block soil or stones in a mine during use, the situation that the soil or the stones in the mine fall off to injure workers is effectively reduced, the safety coefficient in the mine is effectively improved, and the possibility of mine collapse caused by falling of a large amount of soil or stones is effectively reduced.

The invention discloses a method for reinforcing water-rich silt strata by obliquely arranging multiple rows of freezing pipes. The method comprises the following steps of 1, conducting surveying andsetting out; 2, conducting drilling with casing; 3, obliquely arranging the multiple rows of freezing pipes; and 4, reinforcing the water-rich silt strata. According to the method, before excavation,silt soil layers on the two sides of a groove wall to be subjected to excavation are obliquely frozen and reinforced to form oblique reinforced pile walls, the distance between the upper portions of the reinforced pile walls is wide, and the distance between the lower portions of the reinforced pile walls is narrow; the side wall of the groove wall to be subjected to excavation can be reinforced,the bottom can be effectively frozen and reinforced, so that the enough strength is achieved, engineering accidents such as water gushing are prevented, and the groove wall collapse possibility in theexcavation process of an underground diaphragm wall can be effectively reduced; and the method is suitable for excavation of silt sand inclusion layers and high underground water levels, it is guaranteed that follow-up excavation construction is safely, reliably and smoothly carried out, the practicability is high, and the effect of reducing pollution can also be achieved.

The present invention relates to a method for determining a stage difference of horizontal directional reaming. According to the method, a plastic zone scope generated by a preceding stage of counterboring is used as a to-be-cut scope of a next stage of counterboring, i.e. a plastic zone thickness of a preceding stage is used as a cutting amount of a next stage of counterboring, i.e. a stage difference of counterboring. The method specifically comprises the following steps: (1) determining a final hole diameter; (2) determining stress distribution of an elastic zone after an (i)th stage of counterboring; (3) based on Mohr-Coulomb criteria, determining stress distribution of a plastic zone after the (i)th stage of counterboring; (4) determining a radius of the plastic zone after the (i)th stage of counterboring; (5) determining a plastic zone thickness after the (i)th stage of counterboring; (6) determining a stage difference of an (i+1)th stage of counterboring; (7) determining a radius of an (i+1)th stage of hole; and (8) comparing a diameter of the (i+1)th stage of hole with the final hole diameter, and if the diameters are close, terminating the calculation process, and determining the number of stages of counterboring. According to the method provided by the present invention, when carrying out a next stage of counterboring, a plastic zone generated by a preceding stage of counterboring is cut off, so as to prevent hole collapse caused by secondary loading of a plastic zone, and reduce possibility of hole collapse.

The embodiment of the invention provides an unformed battery, a preparation method of the battery and formation equipment, the unformed battery comprises an air bag and a battery main body connected with the air bag, and the air bag is provided with reinforcing ribs. Due to the fact that the air bag is provided with the reinforcing ribs, the stress strength of the air bag is enhanced, in the formation process of the battery, the anti-pressure ability to the pressure of generated gas is enhanced, namely, the deformation degree of the air bag is reduced, the deformation direction of the air bag can be more regular, and then the possibility of generation of wrinkles or collapse is reduced.

The invention belongs to the technical field of foundation pit construction, and particularly relates to a water seepage source diagnosis and flow guide device for a foundation pit without a waterproof curtain. The device comprises a flow guide mechanism and a detection mechanism, wherein the flow guide mechanism comprises a flow guide pipe; a pipe body of the flow guide pipe is divided into a negative pressure section and a seepage section from top to bottom; a plurality of seepage holes are formed in the pipe wall of the seepage section; the pipe body of the seepage section of the flow guide pipe is filled with a filter material; the detection mechanism comprises a plurality of sensors buried in the filter material; the sensors are arranged in the filter material from top to bottom; the output ends of the sensors are in signal connection with the input end of an external signal acquisition instrument through wires; and the output end of the signal acquisition instrument is in wireless signal connection with the input end of a cloud platform server. The water seepage source diagnosis and flow guide device can effectively detect the position of a water seepage source of the foundation pit without the waterproof curtain, and improves the safety performance of the foundation pit.

The invention relates to a self-service wall protecting device and method for a cast-in-situ bored pile, the self-service wall protecting device comprises a vertically-arranged hollow drill rod, the bottom end of the drill rod is connected with a drill bit, the drill bit is internally provided with a plurality of mud spraying pipes, the mud spraying pipes are circumferentially arranged around the axis of the drill bit, one end of each mud spraying pipe communicates with the outer side wall of the circumference of the drill bit, and the other end of each mud spraying pipe communicates with the outer side wall of the circumference of the drill bit. The other end extends into the drill rod. A mud pump is arranged on the ground, the outlet end of the mud pump is communicated with a mud conveying hose, the end, away from the mud pump, of the mud conveying hose extends into the drill rod from the top of the drill rod, and the mud conveying hose and the mud spraying pipe are communicated and rotationally connected. The method has the advantage that the collapse possibility of the hole during drilling is reduced.