37results about How to "Large diffusion radius" patented technology

The invention discloses a soft and weak wall rock tunnel advance reinforced support construction method. When a pipe roof advance support construction is carried out on one segment of the constructed tunnel, the construction method comprises the following steps: (1) support arch and guide pipe construction, wherein a plurality of guide tubes for carrying out guiding on a plurality of pipe roof pipes are arranged on a support arch; each pipe roof pipe comprises a pipe body and a drill bit; each pipe body is formed by splicing a plurality of pipe joints; each drill bit is coaxially arranged at the front end of the pipe body; the pipe joints are spiral steel pipes; the pipe roof pipes are first pipe roof pipes or second pipe roof pipes; and the first pipe roof pipes and the second pipe roof pipes are staggered; (2) drilling machine and slip casting machine installation and emplacement; (3) pipe roof advance support construction, which comprises the following processes: first pipe roof pipe drilling and synchronous grouting construction, final hole grouting construction of the first pipe roof pipes, second pipe roof pipe drilling and synchronous grouting construction and final hole grouting construction of the second pipe roof pipes. The method disclosed by the invention is simple in steps, reasonable in design, simple and convenient to construct and good in support effect; and the soft and weak wall rock tunnel advance reinforced support process can be simply, conveniently and quickly finished.

The invention relates to a construction method for covering layer closed porthole high-pressure curtain grouting. The method includes following steps: (1), non-grouting section construction; (2), grouting section hole-creating; (3), grouting section long division; (4), grouting pressure determination; and (5), grouting way determination. A casing pipe is used for following up to the non-grouting section, and mud fixes walls and creates holes, so drilling speed and hole-forming rate can be greatly improved, and the problem of difficulty in hole-forming of a ground layer of a deep covering layer is solved. On the deep covering layer, higher grouting pressure is adopted, grouting injection rate increases obviously, diffusion radius enlarges, and grouting effect is fine. On the covering layer, the closed porthole curtain grouting construction method is adopted, grouting quality is guaranteed, frequent 'pipe hugging'drilling accidents during grouting are basically avoided, and construction efficiency is improved.

The invention relates to a single-side water-proofing and dirt-resisting and single-side 3-dimensional moisture-absorbing and quick-drying process for terylene/chinlon fabric. The process is characterized in that a polyester-polyether hydrophilic finishing agent DM-3741 is firstly used for carrying out hydrophilic finishing to the terylene/chinlon fabric, so as to enable the terylene/chinlon fabric to have excellent hydrophilicity, then a one-way wet guiding agent DM-3420 is used for full bottom printing of the front side of the fabric, drying is performed, then a one-way wet guiding agent dot matrix is printed on the reverse side of the fabric, and drying, baking, water washing, dewatering and drying are performed. Thus, the single-side water-proofing and dirt-resisting and single-side moisture-absorbing and quick-drying effects can be achieved. The process provided by the invention has the advantages that the operability is strong, the fabric treated with the process is excellent in washing resistance and comfortableness during wearing; after 30 times of washing, the effects of water proofing, dirt resisting, moisture absorbing and quick drying are hardly lowered, so that customer requirements are satisfied, and the process has remarkable significance in improving product wearing properties, added values and the like.

The invention discloses an advance support construction method for a high-strength pipe shed of a tunnel. A process for carrying out advance support construction on a pipe shed of one segment of a constructed tunnel comprises the following steps: (1) constructing support arches and guide pipes; (2) installing a drilling machine and a grouting machine in place; (3) carrying out advance support construction on the pipe shed: (301) preparing before drilling; (302) drilling pipe joints at front ends and synchronously grouting; (303) connecting the pipe joints; (304) continuously drilling and synchronously grouting; (305) repeating the steps (303) and (304) many times until the drilling processes of pipes of the current constructed pipe shed are finished; (306) blocking drill holes; (307) carrying out grouting construction on final holes; (308) repeating the steps (301) to (307) many times until all advance support construction processes of the pipes of the pipe shed are finished; and (4) carrying out excavation construction on the tunnel. The method disclosed by the invention is simple in step, reasonable in design, simple and convenient in construction and good in support effect; and by adopting automatic drilling type high-strength pipes of the pipe shed, the advance support process of the tunnel can be simply, conveniently and quickly finished.

A support method for a coal seam roadway to cross a gob belongs to the technical field of roadway supporting for coal measure strata and utilizes combination of temporary support and permanent support. The support method is characterized in that the temporary support includes applying an alternating-current field after double-slurry is grouted into small ducts, increasing scattering radius of the slurry under electric effect of electro-osmosis and electrophoresis, filling the double-slurry into holes and slits inside regenerated surrounding rock of the gob sufficiently so as to reinforce of the regenerated surrounding rock of the gob again, and finally forming the integrated surrounding rock. The support method aims to increase integral strength, stability and self-bearing capacity of the regenerated surrounding rock of the gob. The integral strength of the regenerated surrounding rock of the gob is increased by at least 230% by using the support method as compared with the existing support method for the coal seam roadway to cross the gob.

The invention discloses side slope grouting slurry for silty-fine sand embankment widening, prepared from the following raw material in parts by weight: 3-15 parts of water glass, 2-10 parts of acetic acid, 1-5 parts of calcium chloride, 0.2-3 parts of disodium hydrogen phosphate, 0.1-5 parts of ferric trichloride, 0.1-5 parts of aluminum chloride, and 0.1-3 parts of phosphoric acid or sulfuric acid. The side slope grouting slurry for silty-fine sand embankment widening has the advantages as follows: (1) the slurry provided by the invention is good in permeability, large in dispersion radius after grouting, high in grouting reinforcement strength and good in homogeneity, and the gelation time of the slurry in the air and the sand layer is long; (2) the rest materials of the raw materials apart from the acetic acid which is an organic matter are all inorganic matters, and all of the raw materials do not belong to the range of hazardous article control, and may not cause pollution on the surrounding environment in the use process; the by-products of the slurry after solidification reaction also has no pollution on the environment, and is environment-friendly and harmless; and (3) the raw materials are low in price and wide in source.

The invention discloses a wing plate advanced small pipe used for advance support of a soft broken surrounding rock tunnel, which comprises small pipes with grouting holes, and both sides of each small pipe are provided with wing plates. The small pipes are pressed into the front broken surrounding rocks at certain inclination angle through a jack or a drill, and the small pipes are buckled together to form a curtain structure during pressing. Slurry is injected into the small pipes, the slurry flows into slots in the wing plates through holes on the pipe walls and is injected into the front surrounding rock cracks along the slots, so that the broken rock bodies are connected into a whole, and the stability of the surrounding rocks is maintained. The wing plate advanced small pipe has easiness in maintenance, high slurry utilization rate and high load bearing, the advance support of loose broken surrounding rocks is truly realized, and the collapse rate of surrounding rocks of a tunnel is greatly reduced. The wing plate advanced small pipe can be machined outside the site and then transported to the site, so that time and labor are saved. Meanwhile, the plate insertion method and the ordinary advanced small pipe are combined to form the wing plate advanced small pipe, so that sufficient supporting counter force can be implemented to the surrounding rocks.

The invention relates to a coal mining grouting technology, in particular to a fully mechanized mining face construction region deep hole staging pressurization grouting method. The fully mechanized mining face construction region deep hole staging pressurization grouting method comprises the steps of construction grouting drilling, pipe downward feeding, hole sealing and grouting. According to the fully mechanized mining face construction region deep hole staging pressurization grouting method, the staging pressurization grouting mode is adopted, and therefore the purpose that different grouting pressures and different grouting flow quantities are carried out in different stages can be achieved, fully diffusion of grout is ensured, the grouting effect of the abnormal region of a working face is guaranteed, the single grouted region is prevented from being repeatedly grouted, the grouting efficiency is improved, the grout diffusion radius is increased, and the grouting effect is ensured. Advanced grouting reinforcement is conducted in the abnormal region, and therefore the stability and the bearing capacity of a coal and rock mass in the abnormal region are improved, and the situation that the working face safely and efficiently passes through the abnormal region is ensured.

The invention relates to a thousand-meter deep well highland stress combination anchor rope grouting hole sealing device and hole sealing method used for grouting accessory of mines, tunnels and underground engineering shoring. The hole sealing device comprises a grouting pipeline which is used for pouring size into a grouting hole, a hole sealing device which seals the grouting hole, and the holesealing device is installed at the mouth of the grouting hole; an anchor rope is installed in the grouting hole through an anchor rope supporting frame, a guiding cap is installed at the head portionof the anchor rope, and a gas guiding pipe is installed in the grouting hole. The device has a simple structure, tight sealing and grouting pressure increasing can be achieved, the grouting diffusionradius can be increased to well fill cracking gaps of wall rock, and therefore the grouting shoring effect is improved; the device and the method can be widely applied to the mines, the tunnels and underground engineering shoring.

The invention discloses a coal and rock mass deep hole subsection grouting reinforcement device and a reinforcement method. The coal and rock mass deep hole subsection grouting reinforcement device comprise a grouting device and at least two groups of grouting pipeline assemblies, wherein the grouting device is provided with slurry outlets matched with the grouting pipe assemblies one by one, connected with the inlet ends of the grouting pipe assemblies and used for conveying different materials, the outlet end of each grouting pipe assembly is connected with a grouting head and can be detached from the grouting head by rotating on its axis. According to the coal and rock mass deep hole subsection grouting reinforcement device and the reinforcement method, the grouting pipeline assembliescan be separated from the grouting heads, so that grouting pipelines are convenient to disassemble, and the grouting heads are secondarily installed for the second time to realize grouting in the nextstage. The grouting range of the structure can be selected, the problems of small effective grouting range, serious slurry leakage phenomenon, complex grouting construction organization and the likeof an existing method for reinforcing a coal and rock mass through shallow hole grouting with high polymer reinforcing materials can be effectively solved, and meanwhile the problems of large diffusion radius fluctuation, difficulty in hole formation and difficulty in reusing drilling holes of deep hole grouting materials can be overcome.

The invention discloses a coal mine underground deep hole quick sealing and grouting device and belongs to the technical field of coal mine underground grouting and hole sealing. The grouting device is high in engineering timeliness and grouting speed and large in diffusion radius and can achieve the objective of single-hole sectional continuous grouting. A one-way valve joint is of an internal thread structure with a forward thread at one end and a reverse thread at the other end, the reverse thread of the one-way valve joint is connected with the front end of a grouting central pipe, a sealing cover is hermetically mounted at the rear end of the grouting central pipe in a sleeved manner, a top cap, a turnbuckle, a one-way valve and a rubber sleeve are sequentially and fixedly mounted onthe outer wall of the grouting central pipe in a sleeved manner, the front end of the one-way valve is abutted against the top cap and the turnbuckle, each of two ends of the rubber sleeve is clampedand shaped through an iron core and an iron loop, an upper iron core on the rubber sleeve is fixed on the grouting central pipe, a lower iron core movably sleeves the grouting central pipe, and an inlet of the one-way valve is communicated with the inside of the grouting central pipe while an outlet of the same is communicated with the rubber sleeve.

The invention belongs to the technical field of grouting, and discloses a nanometer silicon-based grouting material and application. The grouting material comprises a component A and a component B which are independently packaged, wherein the component A comprises 500-800 parts by weight of a main agent, 50-100 parts by weight of a modifier and 50-400 parts by weight of an accelerant, the main agent is sodium silicate and/or potassium silicate, and the component B comprises the following components in parts by weight: 100-200 parts of a cross-linking agent and 200-300 parts of an initiator. According to the invention, the nanometer silicon-based grouting material is good in construction effect, and after grout is injected into a stratum, gel can be rapidly generated to form a high-strength consolidation body with water, gravel and clay in the stratum; and the maximum strength of the gel can reach 1.2 MPa, and the gel has certain elasticity and toughness, can resist stress deformation of strata, and can play a role in long-term water stop and reinforcement.

The invention relates to an intelligent cyclic supercharging and pressure relief type dynamic grouting system and a method. Under the premise of not destroying the original strength of rock mass, thestatic pressure grouting is carried out first, and by measuring the change of the indication number of a flow meter and a pressure transmitter; when the indication number of the flow meter no longer changes and the indication number of the pressure transmitter increases, the system automatically adjusts a pressure regulating valve to increase the grouting pressure, a valve automatic controller controls a slurry outlet valve and a slurry discharging pipeline valve according to the design frequency to switch on, and the cyclic supercharging and pressure relief grouting is realized; the fracturefilling rate and the grouting effect are improved, and the grouting ending standard is more clear to prevent the incomplete or excessive grouting from destroying the rock mass and wasting the resource. A safety pipeline is added in the system to prevent the pipe explosion and extraordinary accident, and the arrangement of a pressure stabilizing barrel ensures the stability of the grouting pressurein grouting process; the intelligent switch of the grouting mode is realized, the grouting efficiency is improved, and the slurry diffusion radius is increased; the fracture filling rate and the grouting effect are improved, the labor capacity is reduced, and the application prospects are wide.