CN1381651A - Anchor-spraying concrete for treating water and support - Google Patents
Anchor-spraying concrete for treating water and support Download PDFInfo
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- CN1381651A CN1381651A CN 02121221 CN02121221A CN1381651A CN 1381651 A CN1381651 A CN 1381651A CN 02121221 CN02121221 CN 02121221 CN 02121221 A CN02121221 A CN 02121221A CN 1381651 A CN1381651 A CN 1381651A
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Abstract
An anchoring-sprayed prop for controlling water in constructing underground engineering features direct use of anchorage and spraying concrete. Its construction technology includes such steps as drilling weep holes, setting up weep pipes, primary spraying, drilling anchor holes, installing anchor rods, hanging net, spraying again, blocking drainage pipes, and curing. If the bed rock encounters fault, it is necessary to spray concrete for the third time.
Description
Technical field
The invention belongs to and build underground construction and administer the water damage technology, relate generally to multiple geology and ooze anchor-spraying concrete for treating water and support under the trickle condition.
Background technology
The Prevention Technique of water damage is the important step that guarantees construction safety and efficient in the known underground construction, have several different methods selected or exploring among, bringing into play separately effect in corresponding occasion; But oozing the serious (1m of trickle
3/ hm
2) situation under, construction person is felt simply helpless.
Summary of the invention
The technical problem to be solved in the present invention is the process program that proposes anchor-spraying concrete for treating water and support.
The particular content of technical solution of the present invention is that anchor-spraying concrete for treating water and support technology comprises: bore weep hole-fixed drain pipe-bolt-spary supports-shutoff drain pipe-maintenance.
That is: boring is to ooze trickle at top board to concentrate a section bore bleeder water, the large tracts of land of the work plane leaching infiltration water that looses, changes mainly flow to the drainage area concentrated into and dredges sluicing, has promptly changed the flow direction of water, reduces the pouring amount of oozing of work plane overwhelming majority surface areas;
Admittedly managing hydrophobic is that closely knit installation drain pipe is hydrophobic in the hole and between the tube wall under boring spilled water hole water burst condition;
Bolt-spary supports is to drench the matrix top layer oozing, set up to have anchoring and the concrete spraying support structure of the function of harnessing the river, with reach harness the river with member from waterproof effect;
Plugging is the drainage gallery of shutoff tapping pipe.
Like this, through the hydrophobic hydraulic pressure load that has shifted the scope of operation, the content of harnessing the river is divided into concentrate on the improvement under the drain pipe place that adorns and all the other large-area different seepage dischargies, created the operating environment of standard comparatively of final shutoff earial drainage stage, simplify the influence factor of problem; Anchoring is the drift section of developing, through anti-reinforcing, the increase basement rock stability of drawing of anchor pole; The concrete spraying support layer is to set up and to harness the river and the member self waterproof structure oozing the trickle matrix; Comparatively proper construction technology arrangement promptly is provided.The technical problem that the present invention is proposed is resolved.
The working procedure of bolt-spary supports of the present invention is: just spray for the third time in spray-brill anchor hole-skyhook-linked network-multiple spray-reinforcing basement rock tomography, cranny development location.
That is: spray just is to drench the matrix top layer and spray the first floor concrete supporting having to ooze;
The anchoring linked network is a skyhook on this matrix, then linked network on spray-up;
Multiple spray is to spray second layer concrete, maintenance on linked network again;
If meet basement rock tomography, cranny development location, then need on second spray-up, to carry out pneumatically placed concrete, maintenance for the third time.
Like this, linked network places between twice sprayed mortar, has both improved the spray-up structure, links with anchoring, strengthens again and the combining of matrix; The anchor spray-up at the serious seepage matrix of easy generation place has then been strengthened in spray for the third time.
The bolt-spary supports that has multiple spray-up of the present invention adopts the thin layer construction method, and promptly first floor thickness is 3cm, and the two or three layer respectively is more than the 5cm; In the batching of sprayed mortar, first spray-up should contain BR-K type enhancing waterproof agent (suitable cement weight) 15-18%, second, third layer shotcrete layer should contain the BR-2 type and strengthen waterproof agent (suitable cement weight) 12-15%.To adapt to the needs that solidify rapidly when thin layer sprays.
The adhesion strength of anchor spray-up of the present invention and scope of operation matrix is respectively: no trickle basement rock 〉=0.5Mpa; At leaching infiltration water≤1m
3/ hm
2Basement rock 〉=1Mpa; Layer of sand water burst, topsoil seep water and general the oozing under the condition of the general pouring of clayey breccia are 〉=2Mpa.This is because basement rock is sprayed the surface certain intensity is arranged; The shape layer of sand that looses is relatively poor relatively; The topsoil infiltration is the granular texture of full Heshui, though moisture abundant, the soil body is stable than layer of sand; The general matrix that oozes of the general pouring of clayey breccia itself has the microdilatancy factor, and water shutoff thereon is sprayed into member and is difficult to other matrix.Different bond strength standards has then adapted to the execution conditions of different matrix.
Spray anchor layer setting time of the present invention need guarantee, under the anhydrous condition 3-5 minute, and on the water base body of basement rock leaching infiltration≤1 minute, layer of sand water burst, topsoil infiltration, the general pouring of clayey breccia be general to be oozed under the condition≤and 40 seconds.Like this, short setting time to be adapting to the different matrix that the water operating condition is arranged, and is subjected to the water logging erosion and caves in to guarantee that the anchor spray-up is unlikely.
Solid pipe of the present invention, plugging and anchoring materials comprise components by weight: cement 100, and slag end 100, the BR-K type strengthens waterproof agent 18; During making that the said components dry mixing is even, packing into is rolled into the cylinder of φ 3 * 25cm with rice paper, two tie material package; During plugging material package met beat in the direct insertion tube of catharsis current real, every hole material package consumption 3-5.
It is 1m that the present invention is oozed trickle at basement rock
3/ hm
2The time, the relevant construction parameter in the anchor-spraying concrete for treating water and support is as follows:
Sprayed mortar water shutoff setting time first floor was less than 1 minute, and the second layer was less than 3 minutes
Its sprayed mortar composition weight proportioning:
P.0325 ordinary portland cement, slag cements, trass cement all can use, and 100%
Lime rock ballast end, below the particle diameter 1.5cm, 200%
Spray just: the BR-K type strengthens waterproof agent 12-14%, water consumption 0.15
Multiple spray: the BR-2 type strengthens waterproof agent 15-18%, water consumption 0.35
The gross thickness of twice sprayed mortar is 15cm.
Experiment detects: rebound degree≤18%, and compressive strength improves more than 20%, and impervious greater than S20, adhesion strength is greater than 4Mpa.
The present invention is when the quicksand water burst of sand aquifer, and the relevant construction parameter in the anchor-spraying concrete for treating water and support is as follows:
The solid sand setting time of described sprayed mortar water shutoff, first floor was less than 40 seconds, and the second layer was less than 2 minutes
Its sprayed mortar composition weight proportioning:
P.0325 ordinary portland cement, 100%
Lime rock ballast art, below the particle diameter 1.5cm, 180%
Spray just: the BR-K type strengthens waterproof agent 15-17% water consumption 0.15
Multiple spray: the BR-2 type strengthens waterproof agent 14-17% water consumption 0.30
The gross thickness of twice sprayed mortar is 15cm.
Experiment detects: compressive strength improves more than 15%; Impervious greater than S18; Adhesion strength is greater than 4Mpa.
The present invention is under the condition of full Heshui at the layer infiltration of table soil, topsoil, and described sprayed mortar protects nation's water shutoff, setting time, and first floor was less than 1 minute, and the second layer was less than 3 minutes
Its sprayed mortar composition weight proportioning:
P.0325 ordinary portland cement, 100%
Medium sand: fineness modulus 2.6, consumption 110%
The limestone stone, below the particle diameter 1.5cm, 180%
Spray just: the BR-2 type strengthens waterproof agent 16-18%, water consumption 0.15
Multiple spray: the BR-2 type strengthens waterproof agent 12-14%, water consumption 0.30
The gross thickness of twice sprayed mortar is 15cm.
Experiment detects: compressive strength improves more than 15%; Impervious greater than S18; The big 3Mpa of adhesion strength.
The present invention is oozed under the condition in that the general pouring of clayey breccia is general, and water percolating capacity is greater than 1m
3/ hm
2The time,
Described sprayed mortar, setting time first floor be less than 30 seconds, and each was less than 1.5 minutes for the second layer and the 3rd layer
Its sprayed mortar composition weight proportioning:
P.0325 ordinary portland cement, 100%
Lime rock ballast end, below the particle diameter 1.5cm, 150%
Spray just: the BR-K type strengthens waterproof agent 16-18% water consumption 0.15, thickness 3cm
Multiple spray: the BR-2 type strengthens waterproof agent 12-15%, water consumption 0.30, thickness 5cm
The proportioning of sprayed mortar is with multiple spray for the third time, and the spray-up gross thickness is 13cm.
Experiment detects: compressive strength improves more than 10%; Impervious greater than S15; The big 4Mpa of adhesion strength.
The present invention administers in the water damage construction in underground construction, through directly introducing anchoring and the sprayed mortar technology of harnessing the river, different characteristics at construction environment, having proposed spray-brill anchor hole-skyhook-linked network of brill weep hole-fixed drain pipe-just-answer spray-reinforcing basement rock tomography, cranny development location sprays for the third time-the concrete construction technology of shutoff drain pipe-maintenance, provide about jetting thickness, bond strength, setting time and some technological parameter in typical case, efficiently solve corresponding constructing technology problem.The present invention program can be gushed sand in basement rock leaching infiltration water, sand aquifer and be emitted water, topsoil percolating water, and the general pouring of clayey breccia is general oozes under the condition, realizes administering water damage.
Characteristics of the present invention are as follows:
1. with the method for concentrating the catharsis water guide, change large tracts of land leaching infiltration current direction, concentrate and dredge pressure release, with the seepage pressure that reduces most of work plane with ooze the trickle amount, created execution conditions.
2. strengthen the solid pipe of waterproof agent preparation, plugging, anchoring material package with the BR-K type, in the environment of excess water, setting time was less than 30 seconds.
3. anchor pole linked network has increased perpendicular, the lateral pull of sprayed mortar, keeps spray-up stability and durability.
4. strengthen the sprayed mortar of waterproof agent preparation with BR-K type, BR-2 type, can regulate the setting time scope at 30 seconds-8 minutes according to requirement of engineering.
5.BR-K type, BR-2 type strengthen the sprayed mortar of waterproof agent preparation, in moment during aquation, generate a large amount of inorganic silica gels, have improved the particle bond stress, it is crystalline to have improved the spray-up internal junction, and this colloid has been filled particle gap and capillary porosity.The change of spray-up internal soundness has improved impervious, resistance to compression, fracture resistance.Can ooze that trickle, topsoil infiltration, layer of sand water burst, the general pouring of clayey breccia are general to be oozed etc. under the leaching infiltration water condition at various basement rock, realize administering a water damage and a sheath from waterproof.
6.BR type strengthens waterproof agent and hydrated cementitious generates material-inorganic silica gel, can suppress sodium ion and generate and separate out, and has solved the chemical attack problem, has improved the spray-up endurance quality.This under the leaching infiltration water condition, the adhesion stress of spray-up can be effectively attached to the basement rock of infiltration and the work plane of other geology greater than 4MPa.
7. roadway top board trickle is at 1m
3/ hm
2Condition under, use conventional quick coagulator for injecting concrete,, cause the spray-up bonding incessantly under the excess water condition because of cement can't solidify, formation is caved in, when engineering runs into this type of geological conditions, adopt grouting method more, envelope is harnessed the river after the evil, carry out the anchor spray again, this method is to invest greater than sprayed mortar several times cost, and long in time limit, and the water sealing effect difficulty can passive completely measure.
8. the engineering that has is holed on basement rock, and the catharsis water pipe is installed, the situation of the long-term earial drainage in the intact back of engineering.Some countries in the west adopt the drainage sluicing method to carry out ejection supporting more, do not carry out the way of shutoff leaching infiltration water.At topsoil, as the heavy construction deep foundation ditch, in case infiltration occurs, multiform becomes to cave in, and works the mischief.Under the common condition of oozing of the general pouring of clayey breccia, adopt grouting method, slurry is annotated not enter, and has only the method that adopts anchor-spraying concrete for treating water and support, top water operation, the general water damage of oozing of general pouring that could seal this distinctive clayey breccia.
Description of drawings
Accompanying drawing has provided embodiment of the invention structural representation.
Fig. 1 is an anchor-spraying concrete for treating water and support engineering structures schematic diagram.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Draw the connotation of numbering representative in the accompanying drawing: 1 anchor pole, 2 drain pipes 3 are spray-up 4 lead wire nets 5 multiple spray-up 6 matrixes 7 material packages just
First embodiment occurs in colliery-374m master tunnel, belongs to limestone geology, top board trickle 1m
3/ hm
2The scene.Referring to Fig. 1.
Construction sequence: concentrate the place at the top board trickle, 2m bores the dark 60cm of φ 50mm hole at interval, and closely knit installation φ 50mm steel pipe is hydrophobic.Spray just then, the thick 5cm of spray-up treats to bore in 2 hours φ 50mm hole on spray-up, degree of depth 1.6m, interval 2.5m, skyhook, linked network, in the anchor spray, two-layer gross thickness is 15cm then.Plugging is carried out in maintenance 72 hours.Concrete technology and parameter are as follows:
1. sprayed mortar weight proportion: ordinary portland cement P.0325, slag cements all can use 100%
The following lime rock ballast of particle diameter 1.5cm end, 200%
The BR-K type strengthens waterproof agent 12-14%
The BR-2 type strengthens waterproof agent 12-15%
Water consumption 0.35
The gross thickness of twice sprayed mortar is 15cm.
Anchoring rod, drain pipe, shutoff drain pipe materials weight proportion are installed:
Cement 100%, slag foam 50%, the BR-K type strengthens waterproof agent 18%, and dry mixing is even, and the rice paper of packing into is rolled into the cylindric of φ 3 * 25cm, and two ties, and directly inserts tapping pipe then and beats reality, every pipe 3-5, can seal sluicing.After testing, anchoring, anchor spray quality are:
1. anchoring rod reached 8 tons of anchored force in 5 minutes.
2. spray-up setting time: first floor was less than 1 minute, and the second layer was less than 3 minutes; Springback capacity is less than 18%.
3. compressive strength improves more than 20%.
4. impervious greater than S20.
5. the big 4Mpa of adhesion strength.
6. the bright and clean densification of spray-up, the refractive power effect is arranged, spray-up is cinerous, and no sodium ion is separated out.
Adopt this technology envelope rate of harnessing the river to reach 100%.After 2300 linear meter(lin.m.) tunnels are built up in this engineering, reach the sample project of no leaching infiltration water spot and free from dampness.
Second embodiment occurs in certain underground job site, when be excavated to-22～-the 24m place, run into powder fine sand water burst section, reach 10m at area
2In, water yield is greater than 70m
3/ h.
Dig the method for limit supporting under adopting while drawing water, top water sprayed mortar in oozing the water burst environment.Scheme during back cover adopts behind the first limit, concentrated pressure is filled out, dry self-waterproof concrete back cover.
Construction sequence:
1. draw water: under the centre, bottom, dig dark 1.5m water nest, put into the water pump draining, Pump output 80m
3The time.
2. sprayed mortar thickness 3cm, setting time 40 seconds treats to carry out multiple spray after 1 hour thickness 12cm, setting time 1-2 minute.Springback capacity is less than 14%.
3. the scheme during back cover adopts behind the first limit, the preparation setting time is 40 seconds a concrete, it is thick that concentrated pressure is filled out 20cm, treat 1 hour after, build dry self-waterproof concrete C20 rank again, thickness 20cm.
4. press and fill out the water nest, calculate water nest materials, prepare standby, the rapid extraction water pump, disposable pressure is filled out, envelope is beaten firmly then, setting time 40 seconds, water shutoff end.
5. first pneumatically placed concrete weight proportion: cement 100%, lime rock ballast foam (particle diameter 2cm50%, particle diameter 1cm50%), incorporation 100%
The BR-K type strengthens waterproof agent waterproof agent 15%, mixing water 0.20.
6. multiple pneumatically placed concrete weight proportion: cement 100%, lime rock ballast foam (particle diameter is less than 2cm), incorporation 200%
The BR-2 type strengthens waterproof agent waterproof agent 13-15%, mixing water 0.30.
7. press and fill out water nest weight concrete proportioning: cement 100%, sand 110%, limestone stone 224%, the BR-K type strengthens waterproof agent waterproof agent 18%, and setting-out nest, setting time 40 seconds are evenly directly sealed in dry mixing.
Adopt this routine technology, at the water burst condition lower seal harmful supporting ippon of harnessing the river, administered the knotty problem that water burst emits sand.Be subjected to the bonus of headquarter.
The 3rd embodiment is that to occur in geological conditions be clayey breccia vertical strata 173m, all is the general colliery of oozing shape of general pouring.Therefore water damage can't have been exploited the very abundant coalfield of reserves since founding the state.
This improvement is oozed trickle at top board and ippon and is concentrated the place, and 2m bores φ 50mm at interval, dark 60cm hole, and peace φ 50mm steel pipe is hydrophobic.
Spray just then, the thick 3cm of spray-up treats to bore in 2 hours φ 50mm hole on spray-up, degree of depth 1.6m, interval 2.5m, skyhook, linked network, in the anchor spray, jetting thickness is 5cm then.Carry out sprayed mortar for the third time in work layer then, plugging is carried out in maintenance 72 hours.
The sprayed mortar weight proportion:
1. spray just: ordinary portland cement P.0325,100%
Lime rock ballast end, below the particle diameter 1.5cm, 100%
The BR-K type strengthens waterproof agent 18%
Water consumption 0.25
Just the setting time of pneumatically placed concrete is 40 seconds, and thickness is 3cm.
Anchoring rod, drain pipe, shutoff drain pipe materials proportioning are installed:
Cement 100%, slag foam 50%, the BR-K type strengthens waterproof agent 18%, and dry mixing is even, and the rice paper of packing into is rolled into the cylindric of φ 3 * 25cm, the dry mixing material of packing into, two ties, and can use then.
After testing, anchoring quality is: anchoring rod reached 8 tons of anchored force in 5 minutes.
3. multiple spray: ordinary portland cement P.0325,100%
Lime rock ballast end, below the particle diameter 1.5cm, 250%
The BR-2 type strengthens waterproof agent weight ratio 18%
Water consumption 0.3
Multiple spray, the thickness of sprayed mortar respectively is 5cm for the third time.
4. plugging materials weight proportion: cement 100%, slag foam 50%, the BR-K type strengthens waterproof agent 18%, dry mixing is even, and the rice paper of packing into is rolled into the cylindric of φ 3 * 25cm, and two ties, then material package is directly inserted in the tapping pipe, every effective 3～6 material packages are beaten reality, can seal sluicing.
After testing:
1. anchoring rod reached 8 tons of anchored force in 5 minutes.
2. spray-up setting time: first floor was less than 40 seconds, and the second layer was less than 2 minutes; Springback capacity is less than 18%.
3. compressive strength improves more than 10%.
4. impervious greater than S20.
5. the big 4Mpa of adhesion strength.
6. the bright and clean densification of spray-up, the refractive power effect is arranged, spray-up is cinerous, and no sodium ion is separated out.
Adopt this routine technology envelope rate of harnessing the river to reach 100%.After 50 linear meter(lin.m.) tunnels are built up in this engineering, reach the sample project of no leaching infiltration water.
Adopt this routine technology, captured this place in the colliery like the non-mud of mud, like the forbidden zone of leaching infiltration water in the special geology structure of the non-rock of rock.
The 4th embodiment belongs to the situation that topsoil envelope is controlled infiltration, is when occurring in certain mansion and building, and excavation pit-10m presents three a large amount of water bursts of ippon at-6m topsoil place, causes the ippon landslide, and danger is coerced the safety of a building 7 floor height inhabitation buildings.
The enforcement water shutoff program of speedily carrying out rescue work is:
1. linked network uses φ 12mm reinforcing bar 12m long with No. 18 galvanized wire establishment 10 * 10cm square hole nets, and oblique cutting is gone in the topsoil, tangles lead wire net.
2. long with φ 12mm reinforcing bar 1.2m, oblique cutting is gone in the topsoil, and spacing distance is 2 a meters/root.The 2 meters drilling depth 1.5m in interval install 50mm plastics stack, 30 ° at inclination angle in addition.
3. first thickness of shotcrete 6cm.Wide by down each 6 meters of the operations in foundation ditch top.
4. weight proportion: cement 100%, medium sand 100%, less than the stone 210% of 2cm diameter, the BR-2 type strengthens waterproof agent 15%, mixing water 0.30.
5. multiple thickness of shotcrete 7cm.Down each operation 6m is wide by foundation ditch top, and the tooled joint that intersects when spraying is again constructed.
6. weight proportion: cement 100%, medium sand 100%, less than the stone 210% of 2cm diameter, the BR-2 type strengthens waterproof agent 12%, mixing water 0.30.
7. detection quality:
Setting time: spray just was less than 3 minutes, and multiple spray was less than 5 minutes, and springback capacity is less than 10%
Compressive strength improves 10%
Impervious greater than S15
Adhesion stress is greater than 3Mpa
Adopt the water shutoff of speedily carrying out rescue work of this routine technology to protect nation, through the operation of speedily carrying out rescue work in 48 hours, this building foundation ditch 1200m
2Ippon all seal, reached two results of supporting of harnessing the river, finish the work for speedily carrying out rescue work.
Claims (10)
1. anchor-spraying concrete for treating water and support technology comprises: bore weep hole-fixed drain pipe (2)-bolt-spary supports (1,3,4,5)-shutoff drain pipe (7)-maintenance
That is: boring is to ooze trickle at top board to concentrate the section bore bleeder water;
Admittedly managing hydrophobic is that closely knit installation drain pipe (2) is hydrophobic between matrix and tube wall under boring spilled water hole water burst condition;
Bolt-spary supports is to ooze trickle matrix top layer at basement rock, sets up the injection plugged zone (3,4) that has anchoring (1) supporting and protection structure;
Plugging is the drainage gallery (2,7) of shutoff tapping pipe.
2. anchor-spraying concrete for treating water and support technology according to claim 1 is characterized in that: the working procedure of described bolt-spary supports is, spray (3) just-bore anchor hole-skyhook (1)-linked network (5)-multiple spray (4)-for the third time spray
That is: spray just is to have the water shutoff of the trickle of oozing matrix top layer injection first floor concrete to prop up sheath;
The anchoring linked network is a skyhook on this matrix, then linked network on spray-up;
Multiple spray is at linked network place spray second layer concrete, carries out maintenance;
If meet basement rock tomography, cranny development location, then need on second spray-up, to carry out pneumatically placed concrete, maintenance for the third time.
3. as anchor-spraying concrete for treating water and support technology as described in the claim 2, it is characterized in that: the described bolt-spary supports that has multiple spray-up adopts the thin layer construction method, and promptly first floor thickness is 3cm, and the two or three layer respectively is more than the 5cm; In the batching of sprayed mortar, first spray-up should contain BR-K type enhancing waterproof agent (suitable cement weight) 15-18%, second, third layer shotcrete layer should contain the BR-2 type and strengthen waterproof agent (suitable cement weight) 12-15%.
4. anchor-spraying concrete for treating water and support technology as claimed in claim 1 or 2, it is characterized in that: the adhesion strength of described anchor spray-up and scope of operation matrix is no trickle basement rock 〉=0.5Mpa respectively; At leaching infiltration water≤1m
3/ hm
2Basement rock 〉=1Mpa; Layer of sand water burst, topsoil seep water and general the oozing under the condition of the general pouring of clayey breccia are 〉=2Mpa.
5. anchor-spraying concrete for treating water and support technology as claimed in claim 1 or 2, it is characterized in that: described spray anchor layer setting time need guarantee, under the anhydrous condition 3-5 minute, on the water base body of basement rock leaching infiltration≤1 minute, layer of sand water burst, topsoil infiltration, the general pouring of clayey breccia be general to be oozed under the condition≤and 40 seconds.
6. anchor-spraying concrete for treating water and support technology as claimed in claim 1 or 2, it is characterized in that: described plugging contains components by weight with the anchoring material package: cement 100, slag end 100, the BR-K type strengthens waterproof agent 18; During making that the said components dry mixing is even, packing into is rolled into the cylinder of φ 3 * 25cm with rice paper, two tie material package (7); During plugging material package met beat in the direct insertion tube of catharsis current real, every hole material package consumption 3-5.
7. anchor-spraying concrete for treating water and support technology as claimed in claim 1 or 2, it is characterized in that: oozing trickle at basement rock is 1m
3/ hm
2The time, the relevant construction parameter in the anchor-spraying concrete for treating water and support is as follows:
Sprayed mortar water shutoff setting time first floor was less than 1 minute, and the second layer was less than 3 minutes
Its sprayed mortar composition weight proportioning:
P.0325 ordinary portland cement, slag cements, trass cement all can use, and 100%
Lime rock ballast end, below the particle diameter 1.5cm, 200%
Spray just: the BR-K type strengthens waterproof agent 12-14%, water consumption 0.15
Multiple spray: the BR-2 type strengthens waterproof agent 15-18%, water consumption 0.35
The gross thickness of twice sprayed mortar is 15cm.
8. anchor-spraying concrete for treating water and support technology as claimed in claim 1 or 2, it is characterized in that: when the quicksand water burst of sand aquifer, the relevant construction parameter in the anchor-spraying concrete for treating water and support is as follows:
The solid sand setting time of described sprayed mortar water shutoff, first floor was less than 40 seconds, and the second layer was less than 2 minutes
Its sprayed mortar composition weight proportioning:
P.0325 ordinary portland cement, 100%
Lime rock ballast end, below the particle diameter 1.5cm, 180%
Spray just: the BR-K type strengthens waterproof agent 15-17% water consumption 0.15
Multiple spray: the BR-2 type strengthens waterproof agent 14-17% water consumption 0.30
The gross thickness of twice sprayed mortar is 15cm.
9. anchor-spraying concrete for treating water and support technology as claimed in claim 1 or 2, it is characterized in that: be under the condition of full Heshui at the layer infiltration of table soil, topsoil, the relevant construction parameter in the anchor-spraying concrete for treating water and support is as follows:
Described sprayed mortar protects nation's water shutoff, setting time, first floor≤1 minute, the second layer≤3 minute
Its sprayed mortar composition weight proportioning:
P.0325 ordinary portland cement, 100%
Medium sand: fineness modulus 2.6, consumption 110%
The limestone stone, below the particle diameter 1.5cm, 180%
Spray just: the BR-2 type strengthens waterproof agent 16-18%, water consumption 0.15
Multiple spray: the BR-2 type strengthens waterproof agent 12-14%, water consumption 0.30
The gross thickness of twice sprayed mortar is 15cm.
10. anchor-spraying concrete for treating water and support technology as claimed in claim 1 or 2 is characterized in that: ooze under the condition in that the general pouring of clayey breccia is general, water percolating capacity is greater than 1m
3/ hm
2The time, the relevant construction parameter in the anchor-spraying concrete for treating water and support is as follows:
Described sprayed mortar, setting time first floor be less than 30 seconds, and each was less than 1.5 minutes for the second layer and the 3rd layer
Its sprayed mortar component (quite cement weight) proportioning:
P.0325 ordinary portland cement, 100%
Lime rock ballast end, below the particle diameter 1.5cm, 150%
Spray just: the BR-K type strengthens waterproof agent 16-18% water consumption 0.15, thickness 3cm
Multiple spray: the BR-2 type strengthens waterproof agent 12-15%, water consumption 0.30, thickness 5cm
The proportioning of sprayed mortar is with multiple spray for the third time; The spray-up gross thickness is 13cm.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434175A (en) * | 2012-01-12 | 2012-05-02 | 中国市政工程西北设计研究院有限公司 | Tunnel lining self waterproof drainage system |
| CN102587939A (en) * | 2012-03-22 | 2012-07-18 | 山东华联矿业股份有限公司 | Waterproof board isolation re-spraying management method for water leakage of underground mine |
| CN102808636A (en) * | 2012-08-09 | 2012-12-05 | 大同煤矿集团有限责任公司 | Supporting method of large-section tunnel in water-rich complicated geological mass |
| CN103174437A (en) * | 2013-03-25 | 2013-06-26 | 南京梅山冶金发展有限公司 | Underground mine roadway wet-type shotcrete and rock bolt supporting method |
| CN104480964A (en) * | 2014-11-24 | 2015-04-01 | 广西壮族自治区冶金建设公司 | Construction method for local water eruption source of underground damp proofing course |
| CN104481560A (en) * | 2014-12-09 | 2015-04-01 | 中煤第一建设有限公司 | Roadway roof aquifer treatment method |
| CN104533469A (en) * | 2014-12-30 | 2015-04-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and device for solving water seepage and leakage of lining surface of underground cavern |
| CN106246208A (en) * | 2016-08-11 | 2016-12-21 | 中国水利水电第十四工程局有限公司 | A kind of construction method of underground chamber naked rock grouting to waterproof |
| CN109611117A (en) * | 2018-11-16 | 2019-04-12 | 西北矿冶研究院 | Supporting method for mine in acid water environment |
| CN112664248A (en) * | 2020-12-25 | 2021-04-16 | 国家能源集团宁夏煤业有限责任公司 | Soft rock water spraying roadway supporting method |
| CN114837696A (en) * | 2022-05-31 | 2022-08-02 | 陕西正通煤业有限责任公司 | Roadway supporting method under water-rich and impact vibration conditions |
-
2002
- 2002-06-10 CN CN 02121221 patent/CN1115447C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434175A (en) * | 2012-01-12 | 2012-05-02 | 中国市政工程西北设计研究院有限公司 | Tunnel lining self waterproof drainage system |
| CN102587939A (en) * | 2012-03-22 | 2012-07-18 | 山东华联矿业股份有限公司 | Waterproof board isolation re-spraying management method for water leakage of underground mine |
| CN102587939B (en) * | 2012-03-22 | 2014-10-15 | 山东华联矿业股份有限公司 | Waterproof board isolation re-spraying management method for water leakage of underground mine |
| CN102808636A (en) * | 2012-08-09 | 2012-12-05 | 大同煤矿集团有限责任公司 | Supporting method of large-section tunnel in water-rich complicated geological mass |
| CN103174437B (en) * | 2013-03-25 | 2015-08-19 | 南京梅山冶金发展有限公司 | A kind of underground mine roadway wet-type combined bolting and shotcrete method |
| CN103174437A (en) * | 2013-03-25 | 2013-06-26 | 南京梅山冶金发展有限公司 | Underground mine roadway wet-type shotcrete and rock bolt supporting method |
| CN104480964A (en) * | 2014-11-24 | 2015-04-01 | 广西壮族自治区冶金建设公司 | Construction method for local water eruption source of underground damp proofing course |
| CN104481560A (en) * | 2014-12-09 | 2015-04-01 | 中煤第一建设有限公司 | Roadway roof aquifer treatment method |
| CN104481560B (en) * | 2014-12-09 | 2017-08-22 | 中煤第一建设有限公司 | Back water-bearing layer administering method |
| CN104533469A (en) * | 2014-12-30 | 2015-04-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and device for solving water seepage and leakage of lining surface of underground cavern |
| CN106246208A (en) * | 2016-08-11 | 2016-12-21 | 中国水利水电第十四工程局有限公司 | A kind of construction method of underground chamber naked rock grouting to waterproof |
| CN106246208B (en) * | 2016-08-11 | 2018-05-04 | 中国水利水电第十四工程局有限公司 | A kind of construction method of the naked rock grouting to waterproof of underground chamber |
| CN109611117A (en) * | 2018-11-16 | 2019-04-12 | 西北矿冶研究院 | Supporting method for mine in acid water environment |
| CN112664248A (en) * | 2020-12-25 | 2021-04-16 | 国家能源集团宁夏煤业有限责任公司 | Soft rock water spraying roadway supporting method |
| CN114837696A (en) * | 2022-05-31 | 2022-08-02 | 陕西正通煤业有限责任公司 | Roadway supporting method under water-rich and impact vibration conditions |
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