CN106121644A - Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement - Google Patents

Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement Download PDF

Info

Publication number
CN106121644A
CN106121644A CN201610440600.9A CN201610440600A CN106121644A CN 106121644 A CN106121644 A CN 106121644A CN 201610440600 A CN201610440600 A CN 201610440600A CN 106121644 A CN106121644 A CN 106121644A
Authority
CN
China
Prior art keywords
hole
sealing
coal
pipe
rock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610440600.9A
Other languages
Chinese (zh)
Other versions
CN106121644B (en
Inventor
杨敬轩
刘长友
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN201610440600.9A priority Critical patent/CN106121644B/en
Publication of CN106121644A publication Critical patent/CN106121644A/en
Application granted granted Critical
Publication of CN106121644B publication Critical patent/CN106121644B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/18Methods of underground mining; Layouts therefor for brown or hard coal
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices, or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/006Lining anchored in the rock
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42DBLASTING
    • F42D1/00Blasting methods or apparatus, e.g. loading or tamping
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42DBLASTING
    • F42D3/00Particular applications of blasting techniques
    • F42D3/04Particular applications of blasting techniques for rock blasting

Abstract

The invention discloses a kind of water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting reinforcement, by setting crosslinking boring in coal petrography, on the one hand the discharge space in coal and rock is effectively increased, on the other hand by the method for water-filling pressure-bearing unloading pressure by blasting in employing hole, take full advantage of the efficient uniform posting characteristic of water, in expanding coal body, cross-link the release range of disturbance of boring.Crosslinking boring discharge space is extensively cross-linked through, defines the unloading pressure by blasting circle of entirety, and release effect is notable." anchor/net/canopy strengthening supporting circle crosslinking hole pattern injection hole sealing reinforcement support circle crosslinking hole pattern unloading pressure by blasting circle stress of primary rock circle " structure formed based on the method, meet " strong and weak strong " support idea in coal petrography support theory, and effectively overcome the difficult problems such as the strong motion under the interior conventional charge blasting condition of boring, many spray orifices, difficult supporting.

Description

Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting Reinforcement
Technical field
The present invention relates to a kind of water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and supporting is mended Strong method, can be used for the heavily stressed transfer of deep coal petrography, the exploitation of heavily stressed coal seam pressure relief and improves stablizing of surrounding rock structure Field.
Background technology
The background produced with the intensive high intensity of current coal, the superficial part resource that can cut coal gradually tends to exhausted, deeply The exploitation of portion's coal petrography resource utilizes the main flow just becoming current coal production.Along with the increase of the coal mining degree of depth, coal seam height should Power occurrence condition seriously constrains the safe and efficient production in colliery.Such as, under the coal mining high stress environment of deep, roadway surrounding rock Deformation is big, and pucking is serious, and drift section strongly reduces, and side coal and rock rock burst in lane is frequent, and supporting construction badly broken etc. causes lane Road useful area reduces, difficult supporting, and repair rate is high, and maintenance cost dramatically increases;For stope support, force piece pressure Frame accident is frequent, pillar well damage, and coal wall caving degree and the frequency are high, and coal seam yields poorly, and work surface strong ore deposit voltage-frequency is numerous, Gao Ying The safety in production of mine in top board induction type impulsion pressure more serious threat under the conditions of power.Therefore, liberation Deep Mine coal petrography High stress environment, it is achieved heavily stressed effective release transfer in the coal and rock of deep, is current deep fractures safety and high efficiency Important leverage, and research and develop efficient coal petrography heavily stressed release transfer techniques and become the key solving this problem.
At present, the coal petrography of main flow heavily stressed release transfer techniques mainly include hole release, hydraulic fracture, standing with And corresponding deriving technology etc..Wherein, boring release is mainly by being drilled with wide-aperture drilling in coal and rock, it is provided that bigger release is empty Between, it is achieved the heavily stressed release of coal and rock is shifted, but relief range is little, and effect is sluggish, needs the longer release cycle to take effect, And set intensive large aperture destressing borehole, add boring and be drilled with cost;Hydraulic fracture is then main by sealing of hole problem system About, technical costs is of a relatively high, and is in three-dimensional high-stress state inside the deep hole under high stress environment, and coal petrography fracturing pressure is strong Degree requires height, and hydraulic fracture equipment and sealing of hole equipment are more proposed high requirement, the in addition filter of deep hole distance coal petrography fracturing section Lose impact, the most indirectly reduce high-pressure hydraulic fracturing effect;For the standing release under the conditions of conventional charge in boring, again Exist physics unloading pressure by blasting and chemistry charge explosion release point, but no matter which kind of unloading pressure by blasting mode, its ultimate principle is all Utilize the high-effect effective expansion boring discharge space of explosion, it is achieved the heavily stressed transfer in the range of coal and rock blast disturbance, release Effect is relatively notable, but this technology exists blasting energy height, drilling and sealing difficulty, and the easy punching of sealing material highlights, formed bigger Country rock explosive funnel, coal production and surrounding rock supporting etc. are impacted.
To sum up analyze, the present invention provide based on drilling in coal and rock plane crosslinking cellular structure water-filling pressure-bearing unloading pressure by blasting and Supporting reinforcement, breaks rock effect by the infiltration of artesian water in country rock hole, efficient uniform posting and static pressure and effectively improves Coal petrography unloading pressure by blasting and surrounding rock supporting effect, the " anchor/net/canopy strengthening supporting circle-crosslinking hole pattern injection hole sealing reinforcement supporting of formation Circle-crosslinking hole pattern unloading pressure by blasting circle-stress of primary rock circle " structure, meet " strong-weak-strong " support idea in coal petrography support theory, Effectively overcome the difficult problems such as the strong motion under the interior conventional charge blasting condition of boring, many spray orifices and difficulty supporting, there is skill widely Art promotion and application are worth.
Summary of the invention
The present invention is directed to the heavily stressed Environmental effect of Deep Mine, it is provided that based on drilling in coal and rock plane crosslinking cellular structure Water-filling pressure-bearing unloading pressure by blasting and supporting reinforcement, the crosslinking that the method is holed based on plane is through, has given full play to crosslinking hole The infiltration of artesian water medium in net, efficient uniform posting and static pressure break rock effect, define the characteristic under these technical conditions " strong-weak-strong " supporting structure system.
The technical solution used in the present invention is: a kind of water-filling pressure-bearing explosion based on drilling in coal and rock plane crosslinking cellular structure Release and supporting reinforcement, mainly include plane crosslinking boring lay, in hole powder charge and pipeline arrange, quick injection hole sealing with And water filling in hole, aerofluxus and powder charge ignite operation, specifically include following steps:
1) for specific coal petrography occurrence condition, specify discharge space scope, design plane drilling parameter, determine reasonable hole Deeply, the pitch of holes ,/parameter such as elevation angle degree and release aperture of inclining.
2), after destressing borehole parameter determination, high-power rig is used to carry out order drilling operation.During drilling, strictly control Rig processed is drilled precision so that the cellular structure after molding is cross-linked with each other, and in the range of being in same plane.
3) after plane cellular structure is formed, to same row to blast hole clean in advance, remaining coal petrography powder in cleaning hole, so After in blast hole quantification powder charge, and synchronize water injection pipe and exhaustor are installed.Primacord is used to ignite explosive in hole, by primacord Arrange outside fairlead along hole wall in conjunction with water injection pipe and exhaustor.
4) in the boring corresponding with position, boundary, Fei Bao district of blast area, install salient angle umbrella in advance to buckle, prevent blast area boring note In slurry sealing of hole operation process, sealing of hole section serosity is to Fei Bao district crosslinking hole pattern diffusion.The special quick injection hole sealing of soft plasticity is used to fill Put, porous synchronous row same to blast area coal petrography to sealing of hole section carry out quick injection hole sealing operation, the hole sealing device installing degree of depth Unanimously.
5), after sealing of hole section grout cures, porous synchronous water filling, aerofluxus operation are started.Persistently flow out when there being current in exhaustor Time, close exhaustor stop valve, water injection pipe continues water filling supercharging, binds primacord and detonator simultaneously and carries out big gun line line work Industry, after personnel remove safety place, explosive in detonating primer and hole.
6) in coal and rock, in hole after explosive initiation, define " crosslinking hole pattern injection hole sealing reinforcement support circle-crosslinking hole pattern Unloading pressure by blasting circle-stress of primary rock circle ".For avoiding the unstability of country rock near region coal and rock that production is impacted, also need manually to set up Or the country rock anchor/net/canopy supporting construction after optimization explosion, form the anchor/net/canopy strengthening supporting circle of little scope, improve country rock steady Qualitative.
As preferably, described step 1) borehole blasting destressing borehole parameter arranges: the boring selected should be advisable with large aperture, General 60~about 100mm, on the one hand provide sufficient discharge space for coal and rock, be the most then conducive to the dress in later stage Medicine and sealing of hole operation, through the most advantageously for realizing the crosslinking of same plane boring;Efficient posting performance based on water with And for meeting the stable of country rock near region coal and rock and reinforcement supporting requirement, crosslinking drilling and sealing length generally boring total length 40%~60% is advisable;For the spacing of wells and hole depth mostly depending on coal petrography intensity and stress of primary rock condition depending on, for hard coal Rock should follow that short-bore is deep, Small Distance principle as far as possible, it is ensured that has higher hole pattern in coal and rock unit section and cross-links through degree, carries High explosion high energy efficiency and the abundant release to hard coal petrography of the efficient posting of aqueous medium, then should suitably strengthen vice versa for soft coal petrography Hole depth and pitch of holes.
Higher for the boring craft precision requirement of drilling of coal petrography plane.During drilling, for shifting setting parameter, the brill of rig The azimuthal tune of bar sets and original position parameter setting etc. of holing is intended to meet certain required precision, so that it is guaranteed that after molding Boring is cross-linked with each other, and is in same plane scope.If molding boring place plane space layer phase difference is farther out, then debugging is needed to drill Parameter is punched again.
As preferably, described step 3) in borehole charge arrange operation with pipeline: for general drilling in coal and rock, set Face upward tendency boring be beneficial to drill during coal petrography powder rafting the clear hole operation with the later stage, the now note in blast hole The water pipe installing degree of depth only requires more than sealing of hole section 0.1~0.3m, and exhaustor then needs to be installed up to position at the bottom of hole;For nutation tendency Boring, then need to assist clear hole facility by corresponding, and coal petrography powder remaining in clearing hole now needs water injection pipe is installed up to hole The end, and exhaustor is exceeded drilling and sealing section 0.1~0.3m.Meanwhile, use primacord to ignite explosive in hole, primacord need to be joined Arrange outside fairlead along hole wall respectively with water injection pipe and exhaustor.
As preferably, described step 4) borehole blasting district injection hole sealing operation: special salient angle umbrella need to be installed in advance and buckle, by quick-fried Broken district and Fei Bao district drilling and sealing section are mutually isolated, row same for blast area to boring carry out injection hole sealing operation and need to use Special soft plasticity rapid hole sealing device, including umbrella button-type plugging device, Grouting Pipe and biconial pipe for drilling and sealing section Piecing devices;
Described umbrella button-type plugging device includes that salient angle umbrella is buckled and smooth umbrella is buckled, and the most curved on the rigidity that salient angle umbrella is buckled pawl sets Salient angle, base buckled by salient angle umbrella is cylindrical metal base, and its diameter is less than Grouting Pipe internal diameter, and base edge is polished into smooth in advance Chamfering;Smooth umbrella is buckled, and for falling the ring buckle of pawl with conventional rigid, ring buckle internal diameter is more than Grouting Pipe external diameter, and its external diameter is less than Bore diameter, salient angle umbrella is buckled and smooth umbrella is buckled down and connected into umbrella by soft plasticity lamellar ductile material between pawl;
Described Grouting Pipe is soft plasticity Grouting Pipe of cracking;
Described biconial pipe joint arrangement includes conical pipe male contact and conical pipe famale connector, wherein outside conical pipe famale connector If swivel nut, there is gasket seal swivel nut and conical pipe famale connector junction;Conical pipe male contact end is with check valve and external screw thread Device, the welding of conical pipe male contact afterbody connects famale connector soon, connects famale connector soon hose connection with slip casting by connecing male contact soon;
A kind of quick slip-casting hole-sealing method of soft plasticity using said apparatus, comprises the following steps:
1) first, according to drilling in coal and rock purposes, the hole base space beyond drilling and sealing section arranges pipeline or powder charge in advance, And pipeline is drawn along hole wall country rock;
2) according to boring bore, sealing of hole segment length requirement, the soft plasticity note of selection, cut respective type, length and bore Slurry pipe, selected Grouting Pipe bore is the 40%~60% of boring bore, and passes in and out uninterrupted according to Grouting Pipe, designs Grouting Pipe Crack bar number, cracking length and width, does not crack at the two ends of Grouting Pipe;
3) after Grouting Pipe of cracking machine-shaping, salient angle umbrella being buckled the front end being built in Grouting Pipe, umbrella is buckled salient angle and is arranged and to protect Grouting Pipe inwall is not touched at the tip of card rigidity pawl, prevents umbrella during later stage slip casting from buckleing and is difficult to automatically release;Depending on slip casting Pipe and boring bore matching relationship, the rigidity length of falling pawl buckled by design salient angle umbrella, it is ensured that after the pawl that falls is released voluntarily, strutted, with hole wall Between there is enough anti-sliding resistings;
4), after salient angle umbrella is buckled and installed, in Grouting Pipe is filled in hole until predetermined sealed borehole length position, then at its tail Portion packs into smooth umbrella respectively and buckles and with the conical pipe famale connector of swivel nut, and is buckled by smooth umbrella and push aperture 0.2~0.5m distance;
5) the conical pipe male contact with check valve and external thread structure is wedged soft plasticity Grouting Pipe afterbody, with conical pipe Famale connector connects, and screws swivel nut until meeting Grouting Pipe seal request;The welding of conical pipe male contact afterbody connects famale connector, soon with band Have and connect after slip casting is hose connection outside the hole of male contact soon, start injection hole sealing operation;
6) opening grouting pump and start injection hole sealing, after slip casting overpressure reaches certain value, Grouting Pipe front end is built-in Salient angle umbrella is buckled and is automatically released, and pawl struts, it is achieved the automatic plugging bottom sealing of hole section, continues thereafter with injection hole sealing, until predetermined Grouting pressure, completes the sealing of hole operation with pressure of boring;
7), after injection hole sealing, pull up with connecing slip casting flexible pipe outside the hole of male contact, slurry pressure automatic sealing package in hole soon Depositing, after grout cures in hole, dismantle biconial pipe joint arrangement, circulation re-uses.
As preferably, described step 5) in mesopore water filling, aerofluxus and powder charge ignite operation: for coal and rock unit section hole The condition that reticular density is relatively big or damaged degree is higher, in coal petrography hole, water body filter loss is relatively large, should select larger aperture as far as possible Water injection pipe carry out porous synchronous water injection work, in hole, also to install large aperture water injection pipe in advance non-explosion row if desired and enter Row synchronizes water filling, it is ensured that coal petrography water filling total amount is higher than the filter loss of water body in hole;Otherwise, should suitably reduce the aperture of waterflood-transmission line With water injection pipe bar number.In drilling in coal and rock the injecting process, when exhaustor has constant stream to go out, close exhaustor stop valve, water filling Pipe continues water filling supercharging, and in hole before explosive initiation, in hole, water-filling medium is always maintained at band pressure condition.
Discharge space on a large scale, explosion high energy efficiency, the efficient uniform posting of water and crosslinking of based on plane crosslinking boring The overall injection hole sealing of hole pattern sealing of hole section and reinforcement support action, in hole after explosive initiation, define " crosslinking hole in coal and rock Net injection hole sealing reinforcement support circle-crosslinking hole pattern unloading pressure by blasting circle-stress of primary rock circle ", meet in coal petrography support theory " strong- Weak-strong " Reasonable Support structural requirement.Meanwhile, for avoiding the unstability of country rock near region coal and rock that production is impacted, manually set up Or the country rock anchor/net/canopy supporting construction after optimization explosion, form the anchor/net/canopy strengthening supporting circle of little scope, improve further The stability of country rock.
Beneficial effects of the present invention:
1. drilling in coal and rock uses plane crosslinking cellular structure, effectively increases the boring crosslinking in country rock unit section through Degree, the abundant release for the heavily stressed coal petrography in deep provides bigger discharge space.
2. use water-filling pressure-bearing Relieving Shot in hole, carry out spaced loading unloading pressure by blasting by crosslinking cellular structure, Make full use of the infiltration of artesian water, efficient uniform posting performance, improve blasting energy sphere of action, it is achieved that set powder charge bar Country rock under the part purpose of space release on a large scale, in hole, powder charge blasting energy effective rate of utilization significantly improves.
3. use crosslinking cellular structure to carry out water-filling pressure-bearing unloading pressure by blasting in hole, reduce explosive charge high-energy to single hole Concentration action intensity, effectively reduce the punching probability of sealing material, and beneficially the stablizing of country rock near region coal and rock.
4. the crosslinking hole pattern of pair drilling and sealing section carries out injection hole sealing, defines sealing material crosslinking solidification after grout cures Body, its overall resistance to deformation and non-skid property significantly improve, thus effectively reduce the punching risk of sealing material.
5. the sealing of hole crosslinked in injection hole sealing section crosslinking cellular structure improves the integrated carrying of country rock near region coal and rock Performance, the existence of injection hole sealing section is equivalent to carry out this country rock region changing of reinforcement supporting, beneficially Surrounding Rock Control effect Kind.
The most manually setting up or optimize the country rock anchor/net/canopy supporting construction after explosion, the anchor/net/canopy defining little scope adds Strong supporting circle, " the crosslinking hole pattern injection hole sealing formed in conjunction with the unloading pressure by blasting under plane crosslinking borehole conditions and sealing of hole operation Reinforcement support circle-crosslinking hole pattern unloading pressure by blasting circle-stress of primary rock circle ", successfully construct characteristic under these technical conditions " strong-weak- Supporting structure system by force ".
Accompanying drawing explanation
Fig. 1 is that the crosslinking cellular structure in country rock is arranged and powder charge and sealing of hole plane graph in hole.
Fig. 2 is water-filling pressure-bearing unloading pressure by blasting effect and supporting construction profile thereof in country rock crosslinking hole pattern.
In figure: 1-Relieving way, 2-blasting boreholes, 3-drilling and sealing section, upper group of plane crosslinking boring of 4-, organize plane under 5- Crosslinking boring, the 6-spacing of wells, powder charge in 7-hole, 8-water injection pipe, 9-exhaustor, the non-blasting boreholes of 10-, 11-primacord, 12- Blast area, 13-Fei Bao district, 14-salient angle umbrella buckles, 15-rapid hole sealing device, 16-strengthening supporting circle, 17-reinforcement support circle, 18- Unloading pressure by blasting circle, 19-stress of primary rock circle, the stress distribution before 20-release, the stress distribution after 21-release, 22-coal petrography is exploited Layer.
Detailed description of the invention
As a example by plane crosslinking hole pattern water-filling pressure-bearing unloading pressure by blasting in roadway surrounding rock, in conjunction with accompanying drawing, the present invention is made into one Step describes:
As illustrated in fig. 1 and 2, it is assumed that Relieving way 1 country rock pre-blasting boreholes 2 degree of depth is 25m, and bore diameter is 100mm, if The meter a length of 15m of drilling and sealing section 3, and arrange upper group plane crosslinking boring 4 and lower group of plane crosslinking boring 5, and drillhole blasting Section plane layer spacing is maintained at 2~about 3m, and in same plane, identical row is also configured as 2~3m to the spacing of wells 6.
Use water-filling pressure-bearing unloading pressure by blasting method in hole, to tendency work surface row to boring carry out powder charge 7 in advance, and fill If water injection pipe 8 (length 25m, external diameter 10mm, internal diameter 6mm) and exhaustor 9 (length 30m, external diameter 10mm, internal diameter 6mm).For upper Face upward boring, in advance exhaustor 9 is inserted at blasting boreholes 2 end, and according to coal and rock leak-off feature, in determining non-blasting boreholes 10 be No carrying out synchronizes water filling, aerofluxus operation, it is assumed that the Coal-body Structure in this case is relatively complete, and the filter loss of water is relatively small, Water injection pipe 8 and exhaustor 9 then only need to be installed in blasting boreholes 2;If a length of 4m is installed in powder charge 7 in hole, designated length is 21m Primacord 11, and its one end is inserted in the waterproof hole of well in advance in powder charge 7, again carries out bagging waterproof measure, fill in In pre-blasting boreholes 2, use flexible tubing (length 20m, external diameter 60mm, internal diameter 40mm) that explosive is delivered to pre-determined bit in hole Put;After powder stick waterproof for the concluding volume in blast hole binding water injection pipe 8, send into blast hole according to identical loading method In.
In coal and rock blast area 12 with the boring of boundary, Fei Bao district 13, install salient angle umbrella buckle 14 closure isolation two country rock districts Territory, then uses special soft plasticity rapid hole sealing device 15 that blast area 12 boring is carried out porous synchronous injection hole sealing operation. For ease of intubating operation, in present case, selected Grouting Pipe bore is 50mm, a length of 18m.After grout cures in hole, it is right to start Blast hole 2 water filling, aerofluxus operation, when exhaustor 9 has constant stream to go out, close the stop valve of exhaustor 9, and water injection pipe 8 continues Water filling supercharging, simultaneously binding primacord 11 and detonator, after personnel remove safety place, ignite powder charge 7 in hole.
After unloading pressure by blasting operation completes, labor cleaning's country rock blasting environment, and set up or optimize the country rock anchor after explosion/ Net/canopy supporting construction, forms the anchor/net/canopy strengthening supporting circle 16 of little scope, unloads in conjunction with the explosion under plane crosslinking borehole conditions What pressure and sealing of hole operation were formed " cross-links hole pattern injection hole sealing reinforcement support circle 17-crosslinking hole pattern unloading pressure by blasting circle 18-protolith to answer Power circle 19 ", successfully build characteristic " strong-weak-strong " supporting structure system under the conditions of Novel explosion unloading technology.
It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, Can also make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.In the present embodiment not Clear and definite each ingredient all can use prior art to be realized.

Claims (5)

1. water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure and a supporting reinforcement, its feature It is: specifically include following steps:
1) for specific coal petrography occurrence condition, specify discharge space scope, design plane crosslinking drilling parameter, determine hole depth, Pitch of holes, incline/elevation angle degree and release aperture parameters;
2), after destressing borehole parameter determination, high-power rig is used to carry out order drilling operation;During drilling, strictly control to bore Machine is drilled precision so that the cellular structure after molding is cross-linked with each other, in the range of being in same plane;
3) after plane cellular structure is formed, to same row to blast hole clean in advance, in cleaning hole, remaining coal petrography powder, then exists Blast hole quantification powder charge, and synchronize water injection pipe and exhaustor are installed;Use primacord to ignite explosive in hole, by primacord in conjunction with Water injection pipe and exhaustor arrange outside fairlead along hole wall;
4) in the boring corresponding with position, boundary, Fei Bao district of blast area, install salient angle umbrella in advance to buckle, prevent blast area bored grouting envelope In the operation process of hole, sealing of hole section serosity is to Fei Bao district crosslinking hole pattern diffusion;Using the quick injection hole sealing device of soft plasticity, porous is same Walk row same to blast area coal petrography to sealing of hole section carry out quick injection hole sealing operation, the hole sealing device installing degree of depth is consistent;
5), after sealing of hole section grout cures, porous synchronous water filling, aerofluxus operation are started;When there being current persistently to flow out in exhaustor, Closing exhaustor stop valve, water injection pipe continues water filling supercharging, binds primacord and detonator simultaneously and carries out big gun line connection line operation, After personnel remove safety place, explosive in detonating primer and hole;
6) in coal and rock, in hole after explosive initiation, define " crosslinking hole pattern injection hole sealing reinforcement support circle-crosslinking hole pattern explosion Unload trim ring-stress of primary rock circle ";For avoiding the unstability of country rock near region coal and rock that production is impacted, also need manually to set up or excellent Change the country rock anchor/net/canopy supporting construction after explosion, form the anchor/net/canopy strengthening supporting circle of little scope, improve surrounding rock stability.
Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure the most according to claim 1 and supporting Reinforcement, it is characterised in that: described step 1) borehole blasting destressing borehole parameter arrange, the boring aperture selected be 60~ 100mm, the 40%~60% of crosslinking drilling and sealing a length of boring total length.
Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure the most according to claim 1 and supporting Reinforcement, it is characterised in that: described step 3) in borehole charge and pipeline arrange operation, the coal petrography for tendency of facing upward bores Hole, the water injection pipe installing degree of depth in blast hole exceedes sealing of hole section 0.1~0.3m, and exhaustor then needs to be installed up to position at the bottom of hole;Right In the boring of nutation tendency, water injection pipe need to be installed up at the bottom of hole, and exhaustor is exceeded drilling and sealing section 0.1~0.3m.
Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure the most according to claim 1 and supporting Reinforcement, it is characterised in that: described step 4) described in soft plasticity rapid hole sealing device, including the umbrella for drilling and sealing section Button-type plugging device, Grouting Pipe and biconial pipe joint arrangement;
Described umbrella button-type plugging device includes that salient angle umbrella is buckled and smooth umbrella is buckled, on the rigidity that salient angle umbrella is buckled pawl the most curved set convex Angle, base buckled by salient angle umbrella is cylindrical metal base, and its diameter is less than Grouting Pipe internal diameter, and base edge is polished into light in advance and slips Angle;Smooth umbrella is buckled, and for falling the ring buckle of pawl with conventional rigid, ring buckle internal diameter is more than Grouting Pipe external diameter, and its external diameter is less than boring Bore dia, salient angle umbrella is buckled and smooth umbrella is buckled down and connected into umbrella by soft plasticity lamellar ductile material between pawl;
Described Grouting Pipe is soft plasticity Grouting Pipe of cracking;
Described biconial pipe joint arrangement includes conical pipe male contact and conical pipe famale connector, wherein conical pipe famale connector peripheral hardware spiral shell Set, there is gasket seal swivel nut and conical pipe famale connector junction;Conical pipe male contact end with check valve and external screw thread device, The welding of conical pipe male contact afterbody connects famale connector soon, connects famale connector soon hose connection with slip casting by connecing male contact soon;
A kind of quick slip-casting hole-sealing method of soft plasticity using said apparatus, comprises the following steps:
1) first, according to drilling in coal and rock purposes, the hole base space beyond drilling and sealing section arranges pipeline or powder charge in advance, and will Pipeline is drawn along hole wall country rock;
2) according to boring bore, sealing of hole segment length requirement, the soft plasticity Grouting Pipe of selection, cut respective type, length and bore, Selected Grouting Pipe bore is the 40%~60% of boring bore, and passes in and out uninterrupted according to Grouting Pipe, and design Grouting Pipe is cracked Bar number, cracking length and width, do not crack at the two ends of Grouting Pipe;
3) after Grouting Pipe of cracking machine-shaping, salient angle umbrella being buckled the front end being built in Grouting Pipe, umbrella is buckled salient angle setting and to be ensured just Grouting Pipe inwall is not touched at the tip of property pawl, prevents umbrella during later stage slip casting from buckleing and is difficult to automatically release;Depending on Grouting Pipe with Boring bore matching relationship, the rigidity length of falling pawl buckled by design salient angle umbrella, it is ensured that after the pawl that falls is released voluntarily, strutted, and has between hole wall There are enough anti-sliding resistings;
4), after salient angle umbrella is buckled and installed, in Grouting Pipe is filled in hole until predetermined sealed borehole length position, then in its portion Do not pack into smooth umbrella to buckle and with the conical pipe famale connector of swivel nut, and smooth umbrella is buckled push aperture 0.2~0.5m distance;
5) the conical pipe male contact with check valve and external thread structure is wedged soft plasticity Grouting Pipe afterbody, connect with conical pipe the moon Head connects, and screws swivel nut until meeting Grouting Pipe seal request;The welding of conical pipe male contact afterbody connects famale connector, soon and with soon Connect after slip casting is hose connection outside the hole of male contact, start injection hole sealing operation;
6) open grouting pump and start injection hole sealing, after slip casting overpressure reaches certain value, the salient angle that Grouting Pipe front end is built-in Umbrella is buckled and is automatically released, and pawl struts, it is achieved the automatic plugging bottom sealing of hole section, continues thereafter with injection hole sealing, until predetermined slip casting Pressure, completes the sealing of hole operation with pressure of boring;
7) after injection hole sealing, pulling up with connecing slip casting flexible pipe outside the hole of male contact soon, in hole, slurry pressure automatic sealing package is deposited, and treats In hole after grout cures, dismantling biconial pipe joint arrangement, circulation re-uses.
Water-filling pressure-bearing unloading pressure by blasting based on drilling in coal and rock plane crosslinking cellular structure the most according to claim 1 and supporting Reinforcement, it is characterised in that: described step 5) water filling in mesopore, aerofluxus and powder charge ignite operation, cut for coal and rock unit The condition that face reticular density is relatively big or damaged degree is higher, in coal petrography hole, water body filter loss is relatively large, should select larger aperture Water injection pipe carry out porous synchronous water injection work, in hole, also to install large aperture water injection pipe in advance non-explosion row if desired and enter Row synchronizes water filling, it is ensured that coal petrography water filling total amount is higher than the filter loss of water body in hole;Otherwise, aperture and the note of waterflood-transmission line should be reduced Water pipe bar number.
CN201610440600.9A 2016-06-17 2016-06-17 The water-filling pressure-bearing unloading pressure by blasting of cellular structure and supporting reinforcement are crosslinked based on drilling in coal and rock plane Active CN106121644B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610440600.9A CN106121644B (en) 2016-06-17 2016-06-17 The water-filling pressure-bearing unloading pressure by blasting of cellular structure and supporting reinforcement are crosslinked based on drilling in coal and rock plane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610440600.9A CN106121644B (en) 2016-06-17 2016-06-17 The water-filling pressure-bearing unloading pressure by blasting of cellular structure and supporting reinforcement are crosslinked based on drilling in coal and rock plane

Publications (2)

Publication Number Publication Date
CN106121644A true CN106121644A (en) 2016-11-16
CN106121644B CN106121644B (en) 2018-05-29

Family

ID=57470577

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610440600.9A Active CN106121644B (en) 2016-06-17 2016-06-17 The water-filling pressure-bearing unloading pressure by blasting of cellular structure and supporting reinforcement are crosslinked based on drilling in coal and rock plane

Country Status (1)

Country Link
CN (1) CN106121644B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106884656A (en) * 2017-03-31 2017-06-23 中国矿业大学 A kind of explosion water filling coupling softens coal body preventing and treating impulsion pressure method
CN107044271A (en) * 2017-04-17 2017-08-15 中国矿业大学 A kind of blanket net pitching slip-casting hole-sealing method
CN108253849A (en) * 2018-03-16 2018-07-06 中国矿业大学 Coal petrography explosion pre-splitting method and device based on liquid explosives envelope note detonation in deep hole

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2210055C2 (en) * 2001-06-13 2003-08-10 Институт горного дела - научно-исследовательское учреждение СО РАН Method for formation of water-proof explosive charge in entry for ore-breaking
CN104329113A (en) * 2014-09-03 2015-02-04 安徽理工大学 Gas drainage method by pressure relief of coal bed bottom plate through ground drilling and loosening blasting
CN104453898A (en) * 2014-10-23 2015-03-25 山东科技大学 Deep hole blasting and static water injecting combining coal seam weakening method
CN104533418A (en) * 2014-11-19 2015-04-22 太原理工大学 Deep hole static rock breaking method for underground coal mine
CN105239983A (en) * 2015-10-15 2016-01-13 山东科技大学 Low-gas permeability coal seam weakening and permeability increasing method combining presplitting and high-pressure water injection
CN105507938A (en) * 2015-12-31 2016-04-20 河南理工大学 Construction method of hydraulic flushing and presplit blasting combined permeability-increasing extraction system in drill holes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2210055C2 (en) * 2001-06-13 2003-08-10 Институт горного дела - научно-исследовательское учреждение СО РАН Method for formation of water-proof explosive charge in entry for ore-breaking
CN104329113A (en) * 2014-09-03 2015-02-04 安徽理工大学 Gas drainage method by pressure relief of coal bed bottom plate through ground drilling and loosening blasting
CN104453898A (en) * 2014-10-23 2015-03-25 山东科技大学 Deep hole blasting and static water injecting combining coal seam weakening method
CN104533418A (en) * 2014-11-19 2015-04-22 太原理工大学 Deep hole static rock breaking method for underground coal mine
CN105239983A (en) * 2015-10-15 2016-01-13 山东科技大学 Low-gas permeability coal seam weakening and permeability increasing method combining presplitting and high-pressure water injection
CN105507938A (en) * 2015-12-31 2016-04-20 河南理工大学 Construction method of hydraulic flushing and presplit blasting combined permeability-increasing extraction system in drill holes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106884656A (en) * 2017-03-31 2017-06-23 中国矿业大学 A kind of explosion water filling coupling softens coal body preventing and treating impulsion pressure method
CN107044271A (en) * 2017-04-17 2017-08-15 中国矿业大学 A kind of blanket net pitching slip-casting hole-sealing method
CN108253849A (en) * 2018-03-16 2018-07-06 中国矿业大学 Coal petrography explosion pre-splitting method and device based on liquid explosives envelope note detonation in deep hole

Also Published As

Publication number Publication date
CN106121644B (en) 2018-05-29

Similar Documents

Publication Publication Date Title
CN105332684B (en) A kind of water under high pressure is quick-fried and CO2The coal bed gas displacement extraction technique that pressure break is combined
CN106121644B (en) The water-filling pressure-bearing unloading pressure by blasting of cellular structure and supporting reinforcement are crosslinked based on drilling in coal and rock plane
CN106761852B (en) The underwater coal petrography deep hole pressure-bearing microexplosion grouting water blocking method of wide area
RU2373398C1 (en) Method of degasification and softening of rocks
WO2019205558A1 (en) Method and device for controlling top coal caving performance by means of pulse hydraulic fracturing
CN103161493B (en) Gas-liquid-solid three-phase coupling blasting weakening rock burst and permeability increasing method
CN104533452B (en) A kind of underground coal mine crushes coal body stagewise grouting strengthening method
US9714555B2 (en) Method of plugging a well
CN103939077A (en) Perforation fracturing permeability-improvement method for high-stress low-porosity coal seam
CN106091853A (en) Tunnel piercing cumulative smooth Hydraulic Blasting device and blasting method
CN103498680B (en) Improve the method for fully mechanized coal face period of beginning mining top-coal recovery rate
CN104747075B (en) Anti-collapsing drilling method for grout spraying of soft coal seam
CN106014473B (en) A kind of cross borehole constrained expansion explosion network permeability-increasing gas drainage method
CN104763427B (en) A kind of supercritical CO2the thick hard difficulty in presplitting colliery collapses the method for top board
CN105627848A (en) Locatable bilinear cumulative blasting device in smooth blasting hole and blasting method
CN108301811A (en) A kind of efficient pumping method of hypotonicity coal-bed gas
CN103835723A (en) Comprehensive pretreatment method for shaft penetration in mined-out area stratum
CN109209472A (en) The coal seam pressure relief anti-burst method that a kind of punching, explosion, water filling intercouple
CN106593393A (en) Method for improving permeability of broken and soft oil and gas reservoir
CN107191218B (en) Suspended slag water seal blasting permeability increasing and gas extraction method
CN105804747B (en) A kind of ultra-thin coal seam waterpower bores the mining method that pops
CN102927863B (en) A kind of new method of total rock tunnel blasting construction
CN110410053A (en) Coal mine roof plate pressure relief method based on eyelet supporting
CN106285677A (en) Side back production subregion filling studding recovery method is expanded to route on Chao Qian
CN108678804A (en) A kind of unmanned mash gas extraction method of hydraulic perforating

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
GR01 Patent grant