CN109681269A - Soft rocks are lauched-and husky mixing is prominent gushes Prevention Technique method - Google Patents
Soft rocks are lauched-and husky mixing is prominent gushes Prevention Technique method Download PDFInfo
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- CN109681269A CN109681269A CN201910042319.3A CN201910042319A CN109681269A CN 109681269 A CN109681269 A CN 109681269A CN 201910042319 A CN201910042319 A CN 201910042319A CN 109681269 A CN109681269 A CN 109681269A
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 239000011435 rock Substances 0.000 title claims abstract description 31
- 230000002265 prevention Effects 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 125
- 238000005553 drilling Methods 0.000 claims abstract description 101
- 239000003245 coal Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 62
- 238000005065 mining Methods 0.000 claims description 13
- 239000002356 single layer Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 206010017076 Fracture Diseases 0.000 description 7
- 239000004576 sand Substances 0.000 description 6
- 108091006146 Channels Proteins 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
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- 230000002542 deteriorative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 241000372132 Hydrometridae Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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Abstract
The present invention provide a kind of soft rocks be lauched-husky mixing is prominent gushes Prevention Technique method, comprising: according to face width to be exploited and drainage elevation information, determine depth and the elevation angle of each drainage drilling, wherein the whole Kong Jun of drainage drilling is limited with drainage height top circle.It is equally spaced drilling machine chamber in the upper crossheading, lower crossheading of working face two sides, using the position of drilling machine chamber coal wall as starting point, according to the depth of each drainage drilling and the elevation angle, is drilled with the drainage drilling of default pattern.Orifice tube is set in the aperture interpolation of drainage drilling, for exporting Sandstone Water, drainage drilling mounting hole pipe is only used for connection water conduction hose, avoids water and soft-rock tunnel contacts baseplate, improve operating environment, improves production efficiency.Effective technology prevention can be carried out for the geological conditions of this area and intermittent gushing water by the above method, ensure production safety.
Description
Technical field
The present invention relates to field with "nine squares" production technique field, be lauched in particular to a kind of soft rocks-husky mixing is prominent gushes
Prevention Technique method.
Background technique
The coal base one of important as China, the total coal resources of Jurassic Coalfield Zhan in western coal resource
85% or so, but water-sand mixed type water inrush accident is multiple during development and utilization.Its common trait is: aquitard can
To cause high-intensitive gushing water in short-term.Quantity of sand and mud is carried in water and is up to 15% or so, forms water-sand mixed type gushing water, conventional row
Water measure cannot be applied.For silt from water bearing sand itself, this bursts husky husky source from top pine with east China mining area
It is different to dissipate alluvium.Northwestward Jurassic stratum is typical soft rock strata, it is characterized in that: sandstone is aqueous, mud stone is not aqueous；
It is silt that sandstone is easy disintegration under hydrodynamic force, and has typical drift sand attribute, and mud stone meets cement, softening, shows to show
The soft rock deteriorating effect of work, serious restrict efficiently are mined.
The raw mechanism of the routed sofa of gushing water is: after seam mining, since rock layer mechanics have differences in nature, leading to top plate
The uncoordinated sinking in rock stratum, generates closed absciss layer space on some interval, and sandstone fissure water continues to collect into absciss layer space
Form free water body.When water producing fractures are developed upwards and pierce through top absciss layer water body, instantaneous gushing water and water be very big, hydrodynamic(al)
Power is strong.Weak cementing sandstone forms water-sand mixture under hydrodynamism and bursts.It is just strong just because of the effect of absciss layer charge for remittance
Aquitard gushing water intensity in short-term is changed.According to above-mentioned mechanism, the routed husky accident of the gushing water of this area shows intermittent spy
Point, difficulty of prevention and cure are big.
Existing shaft draining technology has been difficult to the mechanism of the distinctive geological conditions in this area and intermittent gushing water
The prevention and treatment of effect.
Summary of the invention
It is an object of the present invention in view of the deficiency of the prior art, provide a kind of soft rocks be lauched-it is husky mixed
It closes to dash forward and gushes Prevention Technique method, to solve to be difficult to be effectively prevented for the peculiar geological conditions in this area and intermittent gushing water
The problem of.
To achieve the above object, technical solution used in the embodiment of the present invention is as follows:
The one side of the embodiment of the present invention, provide a kind of soft rocks be lauched-husky mixing is prominent gushes Prevention Technique method, wrap
It includes: according to face width to be exploited and drainage elevation information, determining depth and the elevation angle of each drainage drilling, wherein drainage
The whole Kong Jun of drilling is limited with drainage height top circle.Drilling machine cave is equally spaced in the upper crossheading, lower crossheading of working face two sides
Room.Using the position of drilling machine chamber coal wall as starting point, according to the depth of each drainage drilling and the elevation angle, it is drilled with default pattern
Drainage drilling.Orifice tube is set in the aperture interpolation of drainage drilling, orifice tube prevents water and tunnel for connecting water conduction hose
Floor rock contact.
Further, according to face width to be exploited and drainage elevation information, determine each drainage drilling depth and
Before the elevation angle, further includes: according to formulaCalculate height of water flowing fractured zone HD, wherein M indicates single
Layer mining height.Drainage height is calculated according to height of water flowing fractured zone, wherein drainage height is equal to height of water flowing fractured zone and adds 4 times
Single layer mining height.
Optionally, drilling machine chamber is equally spaced in the upper crossheading, lower crossheading of working face two sides, comprising: in working face
Upper crossheading, the lower crossheading of two sides are interior to arrange a drilling machine chamber every 100m.
Optionally, according to the depth of each drainage drilling and the elevation angle, it is drilled with the drainage drilling of default pattern, comprising:
According to the depth of each drainage drilling and the elevation angle, it is drilled with the drainage drilling of double-layer double-direction sector, double-layer double-direction sector is arranged upper
The aperture elevation angle of layer drainage drilling is 15 ° to 20 ° bigger than the aperture elevation angle that lower layer drainage drills.
Further, double-layer double-direction sector drainage drilling in group drainage drilling plane included angle range be 30 ° extremely
45°。
Further, the length of orifice tube is 1.5m to 3m.
Optionally, a kind of soft rocks be lauched-husky mixing is prominent gushes Prevention Technique method further include: according to facing upward for deflector hole
Angle and height of water flowing fractured zone information, determine the depth of deflector hole, wherein the elevation angle of deflector hole is that deflector hole and tunnel are horizontal
The angle of face vertical direction；Square position is recycled in crossheading under working face and is drilled with deflector hole to working face roof, is led
The extending direction of discharge orifice is contrary with the advance of the face, wherein the whole Kong Jun of deflector hole is limited with water flowing fractured zone top circle；
Diversion pipe corresponding with deflector hole is provided in deflector hole, diversion pipe is hollow tubular structures, for exporting absciss layer water.
Optionally, deflector hole is 35 ° to 45 ° in the orthographic projection of tunnel horizontal plane and the angle in tunnel.
Further, diversion pipe includes drainage floral tube and seamless steel pipe.
Further, drainage floral tube includes the part that the water conservancy diversion tube wall is provided with through-hole, and through-hole is for absciss layer water
Export in time.
The beneficial effects of the present invention are:
Be lauched the present invention provides a kind of soft rocks-husky mixing is prominent gushes Prevention Technique method, comprising: according to wait exploit
Face width and drainage elevation information determine depth and the elevation angle of each drainage drilling, wherein the whole Kong Jun of drainage drilling
It is limited with drainage height top circle.It is equally spaced drilling machine chamber in the upper crossheading, lower crossheading of working face two sides, with drilling machine cave
The position of room coal wall is starting point, according to the depth of each drainage drilling and the elevation angle, is drilled with the drainage drilling of default pattern.
Orifice tube is set in the aperture interpolation of drainage drilling, orifice tube exports the Sandstone Water above working face for connecting water conduction hose.
The roof water punching above working face is realized, plugs orifice tube in the position in aperture, orifice tube is used only as exporting wait exploit
Sandstone Water above working face, operating environment caused by preventing Sandstone Water to land deteriorate, and influence the efficiency of exploitation.By above-mentioned
Mode can carry out effective technology prevention for the mechanism of the distinctive geological conditions in this area and intermittent gushing water, no longer
Absciss layer water damage occurs, has ensured the safety of production process.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 be the soft rocks that provide of one embodiment of the application be lauched-husky mixing is prominent gushes the signal of Prevention Technique method flow
Figure；
Fig. 2 is the sectional view for the working face that one embodiment of the application provides；
Fig. 3 is the schematic diagram of drainage height and height of water flowing fractured zone in one embodiment of the application；
Fig. 4 is the top view for the working face that one embodiment of the application provides；
The soft rocks that another embodiment of Fig. 5 the application provides are lauched-and husky mixing is prominent gushes the signal of Prevention Technique method flow
Figure；
Fig. 6 is the working face top view that another embodiment of the application provides；
Fig. 7 is a kind of structural schematic diagram of the diversion pipe provided in another embodiment of the application.
Icon: 101- absciss layer space；The drilling of 102- drainage；103- orifice tube；104- water conduction hose；The upper crossheading of 106-；
Crossheading under 107-；The drilling of the upper layer 1021- drainage；The drilling of 1022- lower layer drainage；109- diversion pipe；1091- seamless steel pipe；
1092- drainage floral tube；110- drilling machine chamber；A- face width；B- drainage height；C- height of water flowing fractured zone；D-4 times single
Layer mining height；α-seam inclination angle；β-upper layer drainage drilling aperture elevation angle angle bigger than the aperture elevation angle that lower layer drainage drills
Degree；Plane included angle of the γ-with group drainage drilling；δ-deflector hole is in the orthographic projection of tunnel horizontal plane and the angle in tunnel.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below to protect
The scope of the present invention of shield, but it is merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without creative efforts, belongs to guarantor of the present invention
The range of shield.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain item exists
It is defined in one attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, either
The invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, without
It can be interpreted as indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be with
It is slightly tilted.It is not to indicate that the structure is had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
Fully horizontally, it but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition
The concrete meaning of above-mentioned term in the present invention.
Referring to Fig. 2, the element that water-sandbox mixing water bursting disaster occurs mainly may include the following aspects:
First, water condition has water that could permeate remittance into absciss layer space 101 in the rock stratum of face roof to be exploited
Water.
Second, time conditions, weak rich water sandstone layer itself does not have high-intensitive water gushing condition, need by one compared with
Prolonged charge for remittance process.
Third, steric requirements, this area rock stratum will appear absciss layer space 101, Sandstone Water is held after exploitation in overlying strata
Continue and collects to form water body into absciss layer space 101.But because fracture connectivity is strong in caving zone, good penetrability, Sandstone Water is instant
Stope is poured in, absciss layer water damage can not be formed.Also it can produce absciss layer space 101 in high-order basement rock, but lack channel condition, it cannot
Absciss layer water damage occurs.
4th, channel condition has converged absciss layer water body in absciss layer space 101, not necessarily will lead to absciss layer gushing water, must
Must have channel condition.Theoretically water flowing fractured zone is the maximum space range of water producing fractures development, therefore absciss layer water damage is prominent
Aquaporin is still vertical water producing fractures, in conjunction with charge for remittance time conditions it can be concluded that the absciss layer on only leaking crevice belt top
Space 101 is just provided simultaneously with charge for remittance time conditions and water inrush channel condition, and absciss layer water damage could occur.
5th, hydraulic condition, when the pressure of absciss layer water meets or exceeds loose cemented rock of the lower layer containing vertical water producing fractures
When the pressure that layer can bear, it may occur that first time gushing water, hydraulic pressure are released, and hydraulic pressure reduces later, water inrush channel originally
It is blocked by silt, gushing water stops, and charge for remittance is continued in absciss layer space 101.Again when absciss layer water hydraulic pressure reaches the limit of water producing fractures receiving
When pressure, gushing water occurs again.It loops back and forth like this, forms repeatedly intermittent gushing water.
Based on the above background, the application propose a kind of effective soft rocks be lauched-husky mixing is prominent gushes Prevention Technique side
Method.
Fig. 1 be a kind of soft rocks for providing of one embodiment of the application be lauched-husky mixing is prominent gushes Prevention Technique method flow
Schematic diagram.As shown in Figure 1, this method comprises:
S201, basis face width a to be exploited and drainage height b information determine the depth of each drainage drilling 102
The elevation angle and, wherein the whole Kong Jun of drainage drilling 102 is limited with the top drainage height b circle.
Specifically, this method is utilized in above working face to be exploited and is bored in the rock stratum of top plate first referring to Fig. 2
Hole needs first to obtain face width a information to be exploited before drilling, after obtaining width information, it is thus necessary to determine that drainage height b
Information.In addition, the top drainage height b circle is limited the whole Kong Jun of all drainage drilling 102 finally, it is wide in conjunction with working face to be exploited
A information and drainage height b information are spent, the specific elevation angle for each drainage drilling 102 being drilled with needed for being calculated and depth.
S202, drilling machine chamber is equally spaced in the upper crossheading 106, lower crossheading 107 of above-mentioned working face two sides to be exploited
110。
Specifically, being equally spaced brill in the upper crossheading 106, lower crossheading 107 of working face two sides to be exploited referring to Fig. 4
Machine chamber 110.
S203, using the position of 110 coal wall of drilling machine chamber as starting point, according to each drainage drilling 102 depth and the elevation angle,
It is drilled with the drainage drilling 102 of default pattern.
Referring to Fig. 2, according to the depth for each drainage drilling 102 being calculated in step S201 and the elevation angle, in step
In the drilling machine chamber 110 arranged in S202, using 110 coal wall of drilling machine chamber as the starting point of drainage drilling 102, it is drilled with default cloth
The drainage drilling 102 of hole mode.
S204, orifice tube 103 is set in the aperture interpolation of drainage drilling 102, orifice tube 103 is for connecting water conduction hose
104, prevent water and roadway floor rock contact.
Referring to Fig. 2, orifice tube 103 is inserted in the drainage drilling 102 being drilled in step S203, orifice tube 103
In the aperture of drainage drilling 102, orifice tube 103 connects water conduction hose 104 close to one end of working face.Drainage drilling at this time 102
It will be connected to each water-bearing stratum, Sandstone Water will be exported, enter water conduction hose 104 by orifice tube 103, arranged water by drainage system
Out, change the watery of water-bearing stratum with this.
Because of the special geologic condition of this area, i.e., the property of sandstone disintegration in water, orifice tube 103 connect water conduction hose
104 mode can prevent water and roadway floor rock contact while exporting water, cause the sandstone of work surface to meet water and collapse
The property of solution makes environmental degradation, influences the efficiency of exploitation.
Referring to Fig. 3, the watery condition that the method for being drilled with drainage drilling 102 is exactly based on change stratum, which reaches, prevents thing
Therefore the purpose occurred, spatially unrestrained range, will be with coal mining in related formation volumes based on height of water flowing fractured zone c
Water shift to an earlier date it is unrestrained fall.Unrestrained water from sandstone roof, making top plate during working face extraction, there is no water drenching, goaf are no longer outside
Water burst changes operating environment, and mud stone deteriorating effect is curbed in the presence of no water, can promote efficiently to produce, can
To carry out effective technology prevention for the mechanism of the distinctive geological conditions in this area and intermittent gushing water, solves soft rock item
The generation of absciss layer water damage under part, has ensured the safety of production process.
It should be noted that first, above-mentioned method can be used as the first waterproof stage of entire drainage work, use
After the above method is discharged water for the first time, it can be prevented local by the way of geophysical exploration about exhausted to being detected in rock stratum
Unrestrained water is not thorough, the low resistance abnormity area detected adopt carry out with the aforedescribed process it is secondary punching it is unrestrained with guarantee production
Safety, the present embodiment is to using the above method to carry out hydrophobic number with no restrictions, not to the specific means of geophysical exploration about exhausted
Be limited, such as can be Mine Transient Electromagnetic Method etc..Second, the drainage system mentioned in the above method, in the present embodiment
In can be designed arrangement according to not less than twice of maximum flooding quantity.Third, the upper crossheading 106 of working face and lower crossheading
107 determine method are as follows: horizontal absolute altitude the higher person is upper crossheading 106, level in two crossheadings of working face in two crossheadings of working face
Absolute altitude junior is lower crossheading 107.Referring to Fig. 2, upper crossheading 106 and lower crossheading 107, wherein seam inclination angle [alpha] be referring to according to
According to.
Further, according to face width a to be exploited and drainage height b information, each drainage drilling 102 is determined
Before depth and the elevation angle, further includes: according to formulaCalculate height of water flowing fractured zone c, wherein HD
Indicate that height of water flowing fractured zone c, M indicate single layer mining height.Drainage height b is calculated according to height of water flowing fractured zone c, wherein drainage
Height b is equal to height of water flowing fractured zone c and adds 4 times of single layer mining height d.
Specifically, before the depth and the elevation angle for determining each drainage drilling 102, needing first to determine drainage referring to Fig. 3
Height b, drainage height b are equal to height of water flowing fractured zone c and add 4 times of single layer mining height d, and height of water flowing fractured zone c is according to formulaIt is calculated, wherein HDIndicate that height of water flowing fractured zone c, M indicate single layer mining height.This implementation
In example unique restriction is not done to the method for determination of drainage height b, it can also be comprehensive by the methods of engineering sounding, numerical simulation
It determines.
Optionally, it is equally spaced drilling machine chamber 110 in the upper crossheading 106, lower crossheading 107 of working face two sides, wrapped
It includes: arranging a drilling machine chamber 110 every 100m in the upper crossheading 106, lower crossheading 107 of working face two sides to be exploited.
It is exemplary, as shown in figure 4, being respectively arranged in the upper crossheading 106, lower crossheading 107 of working face two sides every 100m
One drilling machine chamber 110.The coverage for improving subsequent drainage drilling 102, reduces the difficulty of subsequent drilling.
Optionally, according to the depth of each drainage drilling 102 and the elevation angle, it is drilled with the drainage drilling of default pattern
102, comprising: according to the depth of each drainage drilling 102 and the elevation angle, it is drilled with the drainage drilling 102 of double-layer double-direction sector, it is double-deck
15 ° bigger than the aperture elevation angle of lower layer drainage drilling 1022 of the aperture elevation angle of the upper layer drainage drilling 1021 of two-way fan-shaped arrangement is extremely
20°。
It is exemplary, as shown in figure 4, being drilled with double-layer double-direction sector behind the depth of determining each drainage drilling 102 and the elevation angle
Drainage drilling 102.Drilling arranges that one of drilling elevation angle is bigger than another drilling elevation angle in pairs on same azimuth
15 ° to 20 °, each Kong Zuzhong wide-angle drilling collectively forms upper layer hole, and each medium and small angular hole-boring of hole group collectively forms lower layer hole,
The referred to as double-deck pattern.The fan-shaped distribution of hole group on each azimuth, i.e. working face side have a sector, and working face is another
Also there are a sector, referred to as bidirectional arrangements pattern in side.It is fan-shaped then refer to be uniformly distributed in tunnel side it is fan-shaped；Lane
The road other side drills by the same manner arrangement, and composition one is completely round on two fan-shaped plans.Purpose is to expand working face
Unrestrained water range above top plate, it is ensured that safety.The aperture that its aperture elevation angle that drainage drills at the middle and upper levels drills than lower layer drainage is faced upward
The range of the big angle beta in angle is 15 ° to 20 °.The depth of the drainage drilling 102 of seam inclination direction side is bored than opposite direction drainage
The depth in hole 102 is small.
Further, the range in the drainage drilling 102 of double-layer double-direction sector with the plane included angle γ of group drainage drilling is
30 ° to 45 °.
It is exemplary, as shown in figure 4, with the plane included angle γ of group drainage drilling in the drainage drilling 102 of double-layer double-direction sector
It is 30 ° to 45 °.It can be when laying drainage drilling 102, it, can also be to avoid low-angle to needing drainage rock stratum to be covered comprehensively
Intensive drilling wasting manpower and material resources, increase the cost of exploitation, influence economic benefit.
Further, the length of orifice tube 103 is 1.5m to 3m.
It is exemplary, as shown in Fig. 2, the length when orifice tube 103 is 1.5m to 3m, absciss layer space 101 can not influenced
While interior water exports, guarantees that water enters water conduction hose 104 via orifice tube 103, the cost of exploitation can also be saved.
Based on the above method, deflector hole can also be disposed again preferably to drain, the application proposes a kind of effective
Soft rocks are lauched-husky mixing it is prominent to gush Prevention Technique method further include technical method as shown in Figure 5, this method comprises:
S301, the elevation angle according to deflector hole and height of water flowing fractured zone c information, determine the depth of deflector hole, wherein lead
The elevation angle of discharge orifice is that the elevation angle of deflector hole is the angle of deflector hole Yu tunnel horizontal plane vertical direction.
As shown in fig. 6, the elevation angle that the elevation angle of deflector hole is deflector hole is the folder of deflector hole Yu tunnel horizontal plane vertical direction
Angle can determine that generally 35 ° are according to the performance of the execution conditions at scene and drilling equipment with preset value for 30 ° to 40 °
Preferably.According to the elevation angle of deflector hole and by the drainage height b information that is calculated, the depth of deflector hole is determined jointly.
Square position is recycled under S302, working face in crossheading 107, is drilled with deflector hole to working face roof to be exploited,
The extending direction of deflector hole is contrary with the advance of the face, wherein the whole Kong Jun of deflector hole is with water flowing fractured zone top circle
Limit.
It is exemplary, as shown in fig. 6, recycling square position in crossheading 107 under working face, to working face roof, bore
If deflector hole, the extending direction of deflector hole is contrary with the advance of the face, wherein the whole Kong Jun of deflector hole is with water producing fractures
Band top circle is limited.Recycle square position: outward from the initial position (cutting eye) of working face mining, when working face strike length with
It is a square when face width a is equal, is secondary square when working face strike length is a2 times of face width, such as
This title circulation square of going down.
S303, diversion pipe 109 is provided in deflector hole, diversion pipe 109 is hollow tubular structures, for exporting absciss layer
Water.
Exemplary, as shown in fig. 6, being provided with diversion pipe 109 corresponding with deflector hole in deflector hole, diversion pipe 109 is
Hollow tubular structures for exporting issuable absciss layer water above working face, and also need providing holes in the tapping of deflector hole
Mouth pipe 103, orifice tube 103 are only used for connection water conduction hose 104, avoid water and soft-rock tunnel contacts baseplate, improve operation ring
Production efficiency is improved in border.
To the mode and setting drainage drilling 102 and orifice tube 103 that deflector hole and diversion pipe 109 is arranged in the application
Mode does not do the limitation of specific order, for example, can carry out simultaneously in two ways, is also possible to that drainage drilling 102 and hole is arranged
Deflector hole and diversion pipe 109 is arranged rear, two ways must mating application preceding in mouthful pipe 103.It is possible thereby to realize solution needle
Is difficult to the peculiar geological conditions in this area and intermittent gushing water, so that no longer sending out under soft rocks the problem of effectively preventing
Raw absciss layer water damage.
Optionally, deflector hole is 35 ° to 45 ° in the orthographic projection of tunnel horizontal plane and the angle δ in tunnel.
It is exemplary, as shown in fig. 6, deflector hole is 35 ° to 45 ° in the orthographic projection of tunnel horizontal plane and the angle δ in tunnel,
The water guiding action of subsequent diversion pipe 109 can be realized with more advantageous angle.
Further, diversion pipe 109 includes drainage floral tube 1092 and seamless steel pipe 1091.
Exemplary, as shown in fig. 7, a part of diversion pipe 109 is drainage floral tube 1092, another part is normal nothing
Stitch steel pipe 1091.The structure of drainage floral tube 1092 can be exported with the water by absciss layer space 101 of duration, make absciss layer space 101
It is interior to form separated strata seeper, to further remove a hidden danger.The material of drainage floral tube 1092 and normal seamless steel pipe 1091
It is identical.
Further, drainage floral tube 1092 includes the part that 109 tube wall of diversion pipe is provided with multiple through-holes, described
Through-hole is used for the timely export of absciss layer water.
It is exemplary, as shown in fig. 7, drainage floral tube 1092 includes the portion that 109 tube wall of diversion pipe is provided with multiple through-holes
Point, through-hole can destroy the closure in absciss layer space 101, and the exporting absciss layer water of duration is removed a hidden danger.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of soft rocks are lauched-husky mixing is prominent gushes Prevention Technique method characterized by comprising
According to face width to be exploited and drainage elevation information, depth and the elevation angle of each drainage drilling are determined, wherein described
The whole Kong Jun of drainage drilling is limited with drainage height top circle；
Drilling machine chamber is equally spaced in the upper crossheading, lower crossheading of the working face two sides to be exploited；
Using the position of the drilling machine chamber coal wall as starting point, according to the depth of each drainage drilling and the elevation angle, it is drilled with default
The drainage of pattern drills；
Orifice tube is set in the aperture interpolation of drainage drilling, the orifice tube prevents water and tunnel for connecting water conduction hose
Floor rock contact.
2. the method as described in claim 1, which is characterized in that basis face width to be exploited and drainage height letter
It ceases, before the depth and the elevation angle that determine each drainage drilling, further includes:
According to formulaCalculate height of water flowing fractured zone HD, wherein M indicates single layer mining height；
The drainage height is calculated according to the height of water flowing fractured zone, wherein it is high that the drainage height is equal to water flowing fractured zone
Degree plus 4 times of single layer mining height.
3. the method as described in claim 1, which is characterized in that the upper crossheading in the working face two sides to be exploited, under
Drilling machine chamber is equally spaced in crossheading, comprising: in the upper crossheading, lower crossheading of work working face the to be exploited two sides every
100m arranges a drilling machine chamber.
4. the method as described in claim 1, which is characterized in that the depth and the elevation angle according to each drainage drilling,
It is drilled with the drainage drilling of default pattern, comprising:
According to the depth of each drainage drilling and the elevation angle, it is drilled with the drainage drilling of double-layer double-direction sector, the double-layer double-direction
The aperture elevation angle of the upper layer drainage drilling of sector arrangement is 15 ° to 20 ° bigger than the aperture elevation angle that lower layer drainage drills.
5. method as claimed in claim 4, which is characterized in that bored in the drainage drilling of the double-layer double-direction sector with group drainage
The range of the plane included angle in hole is 30 ° to 45 °.
6. the method as described in claim 1, which is characterized in that the length of the orifice tube is 1.5m to 3m.
7. method according to claim 2, which is characterized in that the method also includes:
According to the elevation angle of deflector hole and the height of water flowing fractured zone information, the depth of the deflector hole is determined, wherein described to lead
The elevation angle of discharge orifice is the angle of the deflector hole and tunnel horizontal plane vertical direction；
Square position is recycled in crossheading under working face, Xiang Suoshu working face roof is drilled with deflector hole, the deflector hole
Extending direction is contrary with the advance of the face, wherein the whole Kong Jun of the deflector hole is with water flowing fractured zone top circle
It is limited；
Diversion pipe corresponding with the deflector hole is provided in the deflector hole, the diversion pipe is hollow tubular structures, is used
In export absciss layer water.
8. the method for claim 7, which is characterized in that further include the deflector hole tunnel horizontal plane orthographic projection with
The angle in tunnel is 35 ° to 45 °.
9. the method for claim 7, which is characterized in that the diversion pipe includes drainage floral tube and seamless steel pipe.
10. method as claimed in claim 9, which is characterized in that the drainage floral tube includes that the water conservancy diversion tube wall is provided with
The part of through-hole, the through-hole are used for the timely export of absciss layer water.
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