CN206737920U - Deep vertical stratum consolidation filling system under existing wellbore conditions - Google Patents
Deep vertical stratum consolidation filling system under existing wellbore conditions Download PDFInfo
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- CN206737920U CN206737920U CN201720592591.5U CN201720592591U CN206737920U CN 206737920 U CN206737920 U CN 206737920U CN 201720592591 U CN201720592591 U CN 201720592591U CN 206737920 U CN206737920 U CN 206737920U
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Abstract
The utility model provides deep vertical stratum consolidation filling system under a kind of existing wellbore conditions, and the filling system includes：Pit shaft, pressure relief vent and injected hole；Pit shaft is located at center position；Using pit shaft position as the center of circle, multiple pressure relief vents are set on the excircle A of pit shaft, and excircle A radius is R1；Using pit shaft position as the center of circle, multiple injected holes are set on the excircle B of pit shaft, excircle B radius is R2, and R2 ＞ R1；Injected hole is also connected with the grouting pump in the surface grout injection pumping plant of pit shaft periphery, for injecting slurries.Technical scheme provided by the utility model arranges multiple pressure relief vents by the excircle near wellbore, and using the grouting mode of batch (-type), so as to which the grouting pressure for avoiding excessive directly acts on pit shaft, and cause the destruction of pit shaft, drastically increase the stability of deep vertical stratum consolidation slip casting, and construction risk is greatly reduced, social and economic benefits are notable.
Description
Technical field
It the utility model is related to mine construction field, and in particular to deep vertical stratum consolidation note under a kind of existing wellbore conditions
Slurry system and its grouting method.
Background technology
Since the 1980s, in great Tun, Xuzhou, the Huaibei, Yanzhou, there occurs thickness for a large amount of mines in the mining area such as summer forever
Shaft rupture in topsoil, the generation that they have is in shaft construction, and after mine operation, the lighter stops for some generations
Production, the saturating watered-out well of severe one, the serious further development for constraining China's depth vertical construction.Research to shaft wall fracture mechanism,
Form vertical additional force hypothesis, mining influence hypothesis, neotectonic movement hypothesis etc..A large amount of theory analysises, numerical simulation and existing
The achievement of field measurement research supports vertical additional force hypothesis：Special formation water-bearing layer is because of exploitation, and after freezing pipe is pulled out
Thaw collapse and cause the overlying soil body sink.The soil body interacts in infall process with the borehole wall, and it is attached to put on borehole wall outer surface one
Reinforcing system.When the power rises to certain value, concrete walling goes to pot because that can not bear.Shaft wall fracture is thick alluvium and well
The result of wall construction interaction, therefore shaft wall fracture administering method mainly has the borehole wall to reinforce and the class of stratum consolidation two.To processing
The method of the borehole wall is largely studied, and is mainly included：Channel-section steel walling crib pneumatically placed concrete method for strengthening, jacketed borehole wall method, release of slotting
Method.The method handled stratum mainly has：Grouting behind shaft or drift lining and surface grout injection are reinforced.It is closure pit shaft to the purpose of stratum slip casting
The water conservancy passage of periphery aquifer water-bearing stratum, retardance aquifer water-bearing stratum is hydrophobic, can slow down, reduce the sedimentation of pit shaft surrounding formations, reduces
Vertical spectra suffered by shaft wall.
Although consolidation grouting largely research and the engineering practice on shaft wall in surface soil stratum at present, with coal
Charcoal resource exploitation intensity is continued to increase, and superficial part resource is increasingly reduced, and Some Domestic mine has subsequently entered deep coal mining
State, increasing shaft of vertical well need to pass through deep alluvium.Particularly, the alluvium passed through with pit shaft is thicker,
The degree of consolidation on stratum is bigger after its wall, can note performance worse and worse.Obviously, can not be according to the slip casting of conventional table soil layer
Method carries out the consolidation grouting on deep vertical stratum, if merely by increasing grouting pressure, extremely easy generation fracture grouting is excessive
Grouting pressure can directly act on pit shaft, and cause the destruction of pit shaft, how under existing wellbore conditions deep vertical stratum consolidation
Slip casting does not form the method and theory of system also,
Therefore, the research for carrying out deep vertical stratum consolidation filling system and its grouting method under existing wellbore conditions is compeled in eyebrow
Eyelash.
The content of the invention
The purpose of this utility model be to provide under a kind of existing wellbore conditions deep vertical stratum consolidation filling system and its
Grouting method, the grouting method that the technical solution of the utility model solves conventional table soil layer can not carry out deep vertical stratum
The problem of consolidation grouting, the sky that there is no the deep thick alluvium overconsolidated soil grouting method under existing wellbore conditions at present can be filled up
In vain, avoid excessive grouting pressure and directly act on pit shaft, and cause the destruction of pit shaft, drastically increase deep vertical stratum
The stability of consolidation grouting, and construction risk is substantially reduced, social and economic benefits are notable.
To achieve these goals, the utility model provides following technical scheme：
Deep vertical stratum consolidation filling system, the filling system include under a kind of existing wellbore conditions：Pit shaft, pressure relief vent
And injected hole；The pit shaft is located at center position；Using the pit shaft position as the center of circle, in the excircle A of the pit shaft
Upper to set multiple pressure relief vents, the radius of the excircle A is R1；Using the pit shaft position as the center of circle, in the well
Multiple injected holes are set on the excircle B of cylinder, the radius of the excircle B is R2, and R2 ＞ R1；The injected hole also with
Grouting pump in the surface grout injection pumping plant of the pit shaft periphery is connected, for injecting slurries.
The deep vertical stratum consolidation filling system under existing wellbore conditions as described above, be preferably, the pressure relief vent and
The bore position arrangement of the injected hole is linear structure, and the linear structure refers to the center of circle of the pit shaft, the note
Starch the center of circle in hole and the center of circle of the pressure relief vent is located on the same line；Preferably, the number of multiple injected holes is 8
Individual, the number of multiple pressure relief vents is 8.
The deep vertical stratum consolidation filling system under existing wellbore conditions as described above, be preferably, the pressure relief vent and
The bore position arrangement of the injected hole is dislocation type structure, and the dislocation type structure refers to that the center of circle of the injected hole is located at two
The center of circle of the individual adjacent pressure relief vent respectively with the bisector of the circle center line connecting angle of the pit shaft；Preferably, it is more
The number of the individual injected hole is 8, and the number of multiple pressure relief vents is 8.
The deep vertical stratum consolidation filling system under existing wellbore conditions as described above, be preferably, the pressure relief vent and
The bore position arrangement of the injected hole is hybrid architecture, and the hybrid architecture refers in the center of circle of the pit shaft and described
On the extended line of the circle center line connecting of pressure relief vent, the centers of circle of the adjacent two pressure relief vents circle center line connecting with the pit shaft respectively
The injected hole is provided with the bisector of angle；Preferably, the number of multiple injected holes is 16, Duo Gesuo
The number for stating pressure relief vent is 8.
The deep vertical stratum consolidation filling system under existing wellbore conditions as described above, it is preferably, it is two neighboring described
The distance between injected hole is L1, and the distance between the injected hole and the pressure relief vent nearest from the injected hole are L2, and
L1 ＞ L2；Preferably, the distance between two neighboring described injected hole L1 is more than 1.2 times of grout spreading range.
The deep vertical stratum consolidation filling system under existing wellbore conditions as described above, it is preferably, the injected hole
Aperture is 150mm~200mm, and the aperture of the pressure relief vent is 80mm~100mm.
The deep vertical stratum consolidation filling system under existing wellbore conditions as described above, it is preferably, the excircle A's
The span that radius is R1 is 8-12m, and the span that the radius of the excircle B is R2 is 18-22m.
The grouting method of deep vertical stratum consolidation filling system, the grouting method under a kind of described existing wellbore conditions
Comprise the following steps：
1) bore position of injected hole and pressure relief vent is arranged；
The bore position arrangement of the injected hole and pressure relief vent is linear structure, dislocation type structure and mixed type knot
One kind in structure；
2) on the basis of the completion of step 1) arrangement, injected hole and pressure relief vent are bored；
3) injected hole carries out stratum consolidation slip casting, and adjacent injected hole and pressure relief vent carry out release；
4) after the completion of the consolidation grouting in step 3), pressure relief vent and injected hole are subjected to closure processing.
In grouting method as described above, it is preferably, the bore position arrangement of the injected hole and pressure relief vent is straight
Linear structure, injected hole carry out stratum consolidation slip casting, comprising the following steps that when adjacent injected hole and pressure relief vent carry out release：It is first
First, in first injected hole slip casting, by two injected holes adjacent with first injected hole, apart from first slip casting
The nearest pressure relief vent in hole carries out release processing；Then, according to direction pivots clockwise or counter-clockwise, one injected hole in interval is the 3rd
During individual injected hole slip casting, by two injected holes adjacent with the 3rd injected hole, nearest apart from the 3rd injected hole
Pressure relief vent carries out release processing；Finally, the like, until the injected hole to slip casting does not have the adjacent slip casting for carrying out release
Hole, release is only carried out by the nearest pressure relief vent of the injected hole apart from the slip casting, and treat that all injected holes are fully completed slip casting
Afterwards, that is, slip casting work is completed.
In grouting method as described above, it is preferably that the bore position arrangement of the injected hole and pressure relief vent is mistake
Bit-type structure, injected hole carry out stratum consolidation slip casting, comprising the following steps that when adjacent injected hole and pressure relief vent carry out release：It is first
First, in first injected hole slip casting, by two injected holes adjacent with first injected hole, apart from first slip casting
Two nearest pressure relief vents of hole carry out release processing；Then, exist according to direction pivots clockwise or counter-clockwise, one injected hole in interval
During the 3rd injected hole slip casting, by two injected holes adjacent with the 3rd injected hole, apart from the 3rd injected hole most
Two near pressure relief vents carry out release processing；Finally, until the injected hole to slip casting does not have adjacent to carry out release
Injected hole, only carry out release by two nearest pressure relief vents of injected hole apart from the slip casting, and treat that all injected holes are complete
After portion completes slip casting, that is, complete slip casting work.
In grouting method as described above, it is preferably, the bore position arrangement of the injected hole and pressure relief vent is mixed
Mould assembly structure, injected hole carry out stratum consolidation slip casting, comprising the following steps that when adjacent injected hole and pressure relief vent carry out release：It is first
First, the injected hole being pointed on the extended line of the center of circle of pressure relief vent and the circle center line connecting of pit shaft carries out slip casting, is specially：First
During individual injected hole slip casting, it is respectively positioned on by two injected holes adjacent with first injected hole and two injected holes adjacent
The center of circle of two pressure relief vents respectively with the bisector of the circle center line connecting angle of pit shaft, it is nearest apart from first injected hole
Pressure relief vent carry out release；According to direction pivots clockwise or counter-clockwise, to second positioned at the center of circle of pressure relief vent and the circle of pit shaft
When injected hole on the extended line of heart line carries out slip casting, by two injected holes adjacent with second injected hole and this two
Individual injected hole be respectively positioned on the centers of circle of two adjacent pressure relief vents respectively with the bisector of the circle center line connecting angle of pit shaft, away from
The pressure relief vent nearest from second injected hole carries out release；The like, until arriving all positioned at the center of circle of pressure relief vent and well
Injected hole on the extended line of the circle center line connecting of cylinder completes slip casting；Furthermore it is pointed to the center of circle difference of two adjacent pressure relief vents
Slip casting is carried out with the injected hole on the bisector of the circle center line connecting angle of pit shaft, is specially：In first injected hole slip casting
When, carry out release by two pressure relief vents nearest apart from first injected hole；It is right according to direction pivots clockwise or counter-clockwise
Second positioned at two adjacent pressure relief vents the center of circle respectively with the slip casting on the bisector of the circle center line connecting angle of pit shaft
Hole carries out slip casting, and release is carried out by two pressure relief vents nearest apart from second injected hole；The like be located to all
Slip casting is completed in the center of circle of two adjacent pressure relief vents with the injected hole on the bisector of the circle center line connecting angle of pit shaft respectively,
And slip casting work is completed after all injected holes are fully completed slip casting；
Or to be pointed to the centers of circle of two adjacent pressure relief vents first flat with the circle center line connecting angle of pit shaft respectively
Injected hole on separated time carries out slip casting, then the injected hole being pointed on the extended line of the center of circle of pressure relief vent and the circle center line connecting of pit shaft
Slip casting is carried out, and after all injected holes are fully completed slip casting, that is, completes slip casting work.
In grouting method as described above, it is preferably, in step 4), the pressure relief vent and the injected hole are carried out at closure
Reason is to carry out closure processing by low-pressure grouting.
Compared with immediate prior art, technical scheme provided by the utility model has following excellent effect：
Deep vertical stratum consolidation filling system and its grouting method, pass through under existing wellbore conditions provided by the utility model
Multiple pressure relief vents are arranged in the excircle of near wellbore, unloading pressure protection is carried out to pit shaft during the high-pressure slip-casting of injected hole,
According to the pressure-relief effect of pressure relief vent, whole slip casting process uses batch (-type) slip casting.The utility model solves conventional table soil layer
Grouting method can not carry out the effective control problem of grouting pressure of deep stratum high pressure consolidation grouting, can fill up and there is no at present
The blank of overconsolidation stratum grouting method under existing wellbore conditions, avoids excessive grouting pressure and directly acts on pit shaft, and
The destruction of pit shaft is caused, drastically increases the stability of deep vertical stratum consolidation slip casting, and substantially reduces construction risk, society
Meeting, remarkable in economical benefits.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not form to improper restriction of the present utility model.
Wherein：
Fig. 1 is the injected hole of the utility model embodiment and the spacing top view layout of pressure relief vent；
Fig. 2 is the injected hole and pressure relief vent linear structure top view layout of the utility model embodiment；
Fig. 3 is the injected hole and pressure relief vent dislocation type structure top view layout of the utility model embodiment；
Fig. 4 is the injected hole and pressure relief vent hybrid architecture top view layout of the utility model embodiment；
Fig. 5 is the hole layout drawing of the injected hole with pressure relief vent linear structure of the utility model embodiment；
Fig. 6 is the hole layout drawing of the injected hole with pressure relief vent dislocation type structure of the utility model embodiment；
Fig. 7 is the hole layout drawing of the injected hole with pressure relief vent hybrid architecture of the utility model embodiment.
Embodiment
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
In description of the present utility model, term " longitudinal direction ", " transverse direction ", " on ", " under ", "front", "rear", "left", "right",
The orientation or position relationship of the instruction such as " vertical ", " level ", " top ", " bottom " be based on orientation shown in the drawings or position relationship,
It is for only for ease of description the utility model rather than requires that the utility model must be with specific azimuth configuration and operation, therefore
It is not intended that to limitation of the present utility model.The term " connected " that is used in the utility model, " connection " should be interpreted broadly,
For example, it may be it is fixedly connected or is detachably connected；Can be joined directly together, can also be indirect by intermediate member
It is connected, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figures 1 to 7, according to embodiment of the present utility model, there is provided deep vertical under a kind of existing wellbore conditions
Stratum consolidation filling system, filling system include：Pit shaft 3, pressure relief vent 2 and injected hole 1；Pit shaft 3 is located at center position；With well
3 positions of cylinder are the center of circle, multiple pressure relief vents 2 are set on the excircle A of pit shaft 3, excircle A radius is R1；With pit shaft 3
Position is the center of circle, sets multiple injected holes 1 on the excircle B of pit shaft 3, and excircle B radius is R2, and R2 ＞ R1.
In specific embodiment of the utility model, ensuring that the abundant grouting and reinforcing in stratum and pit shaft avoid being destroyed as far as possible
On the premise of, and R1 and R2 span determined according to the slip casting ability of grouting pump.The present embodiment is preferably that R1's takes
Value scope is 8-12m, and R2 span is 18-22m.Value much further preferably from R1 is 10m, and R2 value is 20m.
In specific embodiment of the utility model, the main purpose of pressure relief vent 2 is to protect pit shaft from injected hole 1
The destruction of grouting pressure, therefore the aperture of pressure relief vent 2 should be less than the aperture of injected hole 1.The present embodiment is preferably the hole of injected hole 1
Footpath is 150mm~200mm, and the aperture of pressure relief vent 2 is 80mm~100mm.In specific embodiment of the utility model, slip casting
Hole 1 is also connected with the grouting pump in the surface grout injection pumping plant of the periphery of pit shaft 3, for injecting slurries.
In specific embodiment of the utility model, by nearby arranging multiple pressure relief vents 2 on excircle in pit shaft 3, both
The slurries spread condition of slip casting process can be monitored, the release of the nearly slurries of pit shaft 3 can be carried out again, solve conventional table
The grouting method of soil layer can not carry out the problem of consolidation grouting on deep vertical stratum.
In specific embodiment of the utility model, the bore position arrangement of pressure relief vent 2 and injected hole 1 can be linear pattern
Structure, dislocation type structure or hybrid architecture.
In a specific embodiment of the present utility model, the bore position arrangement of pressure relief vent 2 and injected hole 1 is linear pattern knot
Structure, linear structure refer to that the center of circle in the center of circle of pit shaft 3, the center of circle of injected hole 1 and pressure relief vent 2 is located on the same line.It is excellent
Selection of land, the number of multiple injected holes is 8, and the number of multiple pressure relief vents is 8.As shown in figure 5, multiple injected holes include slip casting
Hole 101, injected hole 102, injected hole 103, injected hole 104, injected hole 105, injected hole 106, injected hole 107, injected hole 108.
Multiple pressure relief vents include pressure relief vent 201, pressure relief vent 202, pressure relief vent 203, pressure relief vent 204, pressure relief vent 205, pressure relief vent 206, unloaded
Press hole 207, pressure relief vent 208.Such as：The circle in the center of circle of pit shaft 3, the center of circle of injected hole 101 and pressure relief vent 201 in linear structure
The heart is located on the same line.
In another specific embodiment of the present utility model, the bore position arrangement of pressure relief vent 2 and injected hole 1 is dislocation type
Structure, dislocation type structure refer to the center of circle of injected hole 1 positioned at the center of circle of two adjacent pressure relief vents 2 center of circle with pit shaft 3 respectively
On the bisector of line angle；Preferably, the number of multiple injected holes 1 is 8, and the number of multiple pressure relief vents 2 is 8.
As shown in fig. 6, multiple injected holes include injected hole 109, injected hole 110, injected hole 111, injected hole 112, injected hole 113, note
Starch hole 114, injected hole 115, injected hole 116.Multiple pressure relief vents include pressure relief vent 201, pressure relief vent 202, pressure relief vent 203, release
Hole 204, pressure relief vent 205, pressure relief vent 206, pressure relief vent 207, pressure relief vent 208.Such as：Dislocation type structure refers to injected hole 109
The center of circle be located at the centers of circle of two adjacent pressure relief vents 208/201 respectively with the bisector of the circle center line connecting angle of pit shaft 3.
In another specific embodiment of the present utility model, the bore position arrangement of pressure relief vent 2 and injected hole 1 is mixed type
Structure, hybrid architecture refers on the extended line of the circle center line connecting in the center of circle of pit shaft 3 and pressure relief vent 2, adjacent two releases
The center of circle in hole 2 on the bisector of the circle center line connecting angle of pit shaft 3 respectively with being provided with injected hole 1；Preferably, multiple notes
The number for starching hole 1 is 16, and the number of multiple pressure relief vents 2 is 8.As shown in fig. 7, multiple injected holes include injected hole 101, note
Starch hole 102, injected hole 103, injected hole 104, injected hole 105, injected hole 106, injected hole 107, injected hole 108, injected hole
109th, injected hole 110, injected hole 111, injected hole 112, injected hole 113, injected hole 114, injected hole 115, injected hole 116；It is more
Individual pressure relief vent includes pressure relief vent 201, pressure relief vent 202, pressure relief vent 203, pressure relief vent 204, pressure relief vent 205, pressure relief vent 206, release
Hole 207, pressure relief vent 208.Such as：Hybrid architecture refers to the extended line of the circle center line connecting in the center of circle of pit shaft 3 and pressure relief vent 201
On be provided with the center of circle circle center line connecting angle with pit shaft 3 respectively of injected hole 101, adjacent two pressure relief vents 208/201
Bisector on be provided with injected hole 109.
In specific embodiment of the utility model, as shown in figure 1, the distance between two neighboring injected hole 1 is L1, note
Starch the distance between hole 1 and the pressure relief vent 2 nearest from the injected hole 1 L2.Preferably, injected hole 1 and unloaded in step 1)
The bore position relation arrangement in pressure hole 2 meets that the distance between two neighboring injected hole 1 L1 is more than injected hole 1 and from the injected hole
The distance between 1 nearest pressure relief vent 2 L2, i.e. L1 ＞ L2.
It is further preferred that the bore position relation of injected hole 1 and pressure relief vent 2 arrangement meets two neighboring note in step 1)
Starch the grout spreading range that the distance between hole 1 L1 is more than 1.2 times.More preferably, injected hole 1 with it is nearest from the injected hole 1
The distance between pressure relief vent 2 L2 is 1 times of grout spreading range.
In specific embodiment of the utility model, dilation angle refers to that the slurries using drill center as origin fill model
Enclose.Grout spreading range is an important parameter, and it has important influence to grouting works amount and cost.
Specific embodiment of the utility model additionally provides deep vertical stratum consolidation slip casting system under the conditions of a kind of existing pit shaft 3
The grouting method of system, grouting method comprise the following steps：
1) bore position of injected hole 1 and pressure relief vent 2 is arranged；
2) on the basis of the completion of step 1) arrangement, injected hole 1 and pressure relief vent 2 are bored；
3) injected hole 1 carries out stratum consolidation slip casting, and adjacent injected hole 1 and pressure relief vent 2 carry out release；
4) after the completion of the consolidation grouting in step 3), pressure relief vent 2 and injected hole 1 are subjected to closure processing.
In specific embodiment of the utility model, the bore position arrangement knot of injected hole 1 and pressure relief vent 2 in step 1)
Structure can be that (linear structure refers to that the center of circle in the center of circle of pit shaft 3, the center of circle of injected hole 1 and pressure relief vent 2 is located to linear structure
On same straight line, as shown in Figure 2)；Can also be that (dislocation type structure refers to that the center of circle of injected hole 1 is located at two to dislocation type structure
The center of circle of individual adjacent pressure relief vent 2 respectively with the bisector of the circle center line connecting angle of pit shaft 3, as shown in Figure 3)；May be used also
Think that (hybrid architecture refers on the extended line of the circle center line connecting in the center of circle of pit shaft 3 and pressure relief vent 2, be adjacent hybrid architecture
Two pressure relief vents 2 the center of circle respectively with being provided with injected hole 1 on the bisector of the circle center line connecting angle of pit shaft 3, such as Fig. 4
It is shown).
In a specific embodiment of the present utility model, the bore position arrangement of injected hole 1 and pressure relief vent 2 can be
During linear structure, injected hole 1 carries out stratum consolidation slip casting, and adjacent injected hole 1 and pressure relief vent 2 carry out specific steps during release
It is as follows：
Head in first 101 slip casting of injected hole, is passing through two injected holes adjacent with first injected hole 101
108/102nd, the pressure relief vent 201 nearest apart from first injected hole 101 carries out release processing.Then, according to clockwise or
Counterclockwise, such as in the direction of the clock be spaced an injected hole 102 in the 3rd 103 slip casting of injected hole, by with this
Two adjacent injected holes 102/104 of 3rd injected hole 103, enter apart from the 3rd nearest pressure relief vent 203 of injected hole 103
Row release processing is last, the like (injected hole 105, injected hole 107), until the injected hole to slip casting does not have adjacent carry out
The injected hole of release, release is only carried out by the nearest pressure relief vent of the injected hole apart from the slip casting (202,204,206,208),
I.e. and after all injected holes are fully completed slip casting, that is, complete slip casting work.
In another specific embodiment of the present utility model, the bore position arrangement of injected hole 1 and pressure relief vent 2 is mistake
During bit-type structure, injected hole 1 carries out stratum consolidation slip casting, and specific steps when adjacent injected hole 1 and pressure relief vent 2 carry out release are such as
Under：
Head in first 109 slip casting of injected hole, is passing through two injected holes adjacent with first injected hole 109
116/110th, two pressure relief vents 208/201 nearest apart from first injected hole 109 carry out release processing.Then, according to suitable
Hour hands or counter clockwise direction, such as an injected hole 110 is spaced in the direction of the clock in the 3rd 111 slip casting of injected hole,
By two injected holes 110/112 adjacent with the 3rd injected hole 111, apart from the 3rd injected hole 111 it is nearest two
Individual pressure relief vent 202/203 carries out release processing.Finally, the like (injected hole 113, injected hole 115), until to slip casting note
Slurry hole does not have the adjacent injected hole for carrying out release, is only carried out by two nearest pressure relief vents of the injected hole apart from the slip casting
Release, and after all injected holes are fully completed slip casting, that is, complete slip casting work.In the present embodiment, according to dislocation type structure
The characteristics of injected hole arrangement, each injected hole 1 have two pressure relief vents 2 with its apart from it is equal and at a distance of recently, therefore will
The two pressure relief vents 2 are used as the observation of stress-relief process, it is ensured that the accuracy and security of stress-relief process.
In another specific embodiment of the present utility model, the bore position arrangement of injected hole 1 and pressure relief vent 2 is mixed
During mould assembly structure, injected hole 1 carries out stratum consolidation slip casting, and specific steps when adjacent injected hole 1 and pressure relief vent 2 carry out release are such as
Under：
First, be pointed on the extended line of the center of circle of pressure relief vent 2 and the circle center line connecting of pit shaft 3 injected hole (101,102,
103rd, 104 slip casting 108), 105,106,107, is carried out, is specially：In first 101 slip casting of injected hole, by with this first
Two adjacent injected holes 109/110 of individual injected hole 101 and two injected holes 109/110 are respectively positioned on two adjacent pressure relief vents
The center of circle respectively with the bisector of the circle center line connecting angle of pit shaft 3, the release nearest apart from first injected hole 101
Hole 201 carries out release；It is located at pressure relief vent to second according to direction pivots clockwise or counter-clockwise, such as according to clockwise direction
When injected hole 102 on the extended line of 202 center of circle and the circle center line connecting of pit shaft 3 carries out slip casting, by with second slip casting
Two adjacent injected holes 110/111 of hole 102 and two injected holes
110/111 to be respectively positioned on the centers of circle of two adjacent pressure relief vents flat with the circle center line connecting angle of pit shaft 3 respectively
On separated time, the pressure relief vent 202 nearest apart from second injected hole 102 carry out release；The like, until to it is all be located at unload
The injected hole on the extended line of the center of circle in hole and the circle center line connecting of pit shaft 3 is pressed to complete slip casting.Furthermore it is pointed to adjacent two to unload
Press hole 2 the center of circle respectively with the bisector of the circle center line connecting angle of pit shaft 3 injected hole (109,110,111,112,
113rd, 114 slip casting 116), 115, is carried out, is specially：In first 109 slip casting of injected hole, by apart from first slip casting
Two nearest pressure relief vents 208/201 of hole 109 carry out release；According to direction pivots clockwise or counter-clockwise, such as according to clockwise
Direction is to second center of circle bisector with the circle center line connecting angle of pit shaft 3 respectively positioned at two adjacent pressure relief vents 2
On injected hole 110 carry out slip casting, unloaded by two pressure relief vents 201/202 nearest apart from second injected hole 110
Pressure；The like to it is all positioned at the center of circle of two adjacent pressure relief vents 2 respectively with the circle center line connecting angle of pit shaft 3 put down
Injected hole on separated time completes slip casting, and slip casting work is completed after all injected holes are fully completed slip casting.In the present embodiment
In, using slip casting in turn is separated, linear structure slip casting is first carried out, laggard line misregistration type structure slip casting, is in order in slip casting
The adjacent injected hole and close pressure relief vent for having abundance carry out release, it is ensured that the security of slip casting process.Furthermore due to entering line misregistration
When the injected hole of type structure carries out slip casting, the injected hole of the linear structure on its adjacent both sides has carried out slip casting, therefore adjacent
The linear structure injected hole on both sides can not play a part of release (having completed slip casting work, no longer acted on release),
Release now can only be carried out by two pressure relief vents nearest apart from the injected hole.
In another specific embodiment of the present utility model, the bore position arrangement of injected hole 1 and pressure relief vent 2 is mixed
(hybrid architecture refers on the extended line of the circle center line connecting in the center of circle of pit shaft 3 and pressure relief vent 2 mould assembly structure, adjacent two
The center of circle of pressure relief vent 2 on the bisector of the circle center line connecting angle of pit shaft 3 respectively with being provided with injected hole 1) when, injected hole
1 carries out stratum consolidation slip casting, comprising the following steps that when adjacent injected hole 1 and pressure relief vent 2 carry out release：
The centers of circle of two adjacent pressure relief vents 2 is pointed to first respectively with the circle center line connecting angle of pit shaft 3 to divide equally
Injected hole (109,110,111,112,113,114,115,116) on line carries out slip casting, is specially：In first injected hole
During 109 slip casting, pass through two injected holes 108/101 adjacent with first injected hole 109 and two injected holes 108/101
Be respectively positioned on the extended line of the center of circle of pressure relief vent 2 and the circle center line connecting of pit shaft 3, apart from first injected hole 109 it is nearest two
Individual pressure relief vent 208/201 carries out release；According to direction pivots clockwise or counter-clockwise, such as according to clockwise direction to second position
In the center of circle of two adjacent pressure relief vents 2, the injected hole 110 respectively on the bisector with the circle center line connecting angle of pit shaft 3 enters
Row slip casting, by two injected holes 101/102 adjacent with second injected hole 110 and two injected holes 101/102 it is equal
On the extended line of the center of circle of pressure relief vent 2 and the circle center line connecting of pit shaft 3, two apart from second injected hole 110 recently
Pressure relief vent 201/202 carries out release；The like to it is all positioned at the center of circle of two adjacent pressure relief vents 2 respectively with pit shaft 3
Injected hole (109,110,111,112,113,114,115,116) on the bisector of circle center line connecting angle completes slip casting.
Be pointed to again on the extended line of the center of circle of pressure relief vent 2 and the circle center line connecting of pit shaft 3 injected hole (101,102,103,104,105,
106th, 107 slip casting, 108) is carried out, is specially：In first 101 slip casting of injected hole, by apart from first injected hole 101
Nearest pressure relief vent 201 carries out release；According to direction pivots clockwise or counter-clockwise, such as according to clockwise direction to second position
, should by distance when the injected hole 102 on the extended line of the center of circle of pressure relief vent 202 and the circle center line connecting of pit shaft 3 carries out slip casting
The nearest pressure relief vent 202 of second injected hole 102 carries out release；The like, until to it is all positioned at the center of circle of pressure relief vent 2 and
Injected hole (101,102,103,104,105,106,107,108) on the extended line of the circle center line connecting of pit shaft 3 completes slip casting, and
Slip casting work is completed after all injected holes are fully completed slip casting.In the present embodiment, using slip casting in turn is separated, first carry out
Dislocation type structure slip casting, it is rear to carry out linear structure slip casting, it is to have the adjacent injected hole 1 of abundance in slip casting and close unload
Hole 2 is pressed to carry out release, it is ensured that the security of slip casting process.Furthermore because the injected hole 1 for carrying out linear structure carries out slip casting
When, the injected hole 1 of the dislocation type structure on its adjacent both sides has carried out slip casting, therefore the dislocation type structure injected hole on adjacent both sides
1 can not play a part of release (having completed slip casting work, no longer acted on release), now can only be by apart from the slip casting
The nearest pressure relief vent 2 in hole carries out release.
In specific embodiment of the utility model, the bore position arrangement of injected hole 1 and pressure relief vent 2 can be straight
Any one in linear structure, dislocation type structure, hybrid architecture.And the arrangement side of this three kinds of injected holes 1 and pressure relief vent 2
Formula, it is that selection, such as formation pore rate, infiltration coefficient, developmental joint fissure are carried out according to engineering geology, hydrogeologic data
The comprehensive selections such as situation, water yield, hydraulic pressure and formation particles grading.The injected hole 1 of linear structure is in slip casting, by same
Enclose the closest pressure relief vent 2 of two neighboring injected hole 1 and inner ring and carry out release, it is little in grouting pressure, to unloading pressure request not
This arrangement can be used when high, this pattern is fairly simple.Dislocation type structure injected hole 1 in slip casting,
It is bigger in grouting pressure by the two pressure relief vents 2 progress release closest with two neighboring injected hole 1 and inner ring is enclosed,
To unload pressure request it is higher when can use this arrangement, this pattern may insure the accuracy of stress-relief process
And reliability.Hybrid architecture injected hole 1, due to the characteristics of taking into account linear pattern and dislocation type, is needing to increase note in slip casting
When starching pressure, while need to increase by 1 number of injected hole, this arrangement can be used.In Practical Project, Ke Yigen
According to specific project situation, the appropriate circle for increasing each number for enclosing injected hole 1 and pressure relief vent 2, injected hole 1 can also being increased
Number, can also increase the arrangement number of injected hole 1 and pressure relief vent 2 in key position, and the utility model is not construed as limiting to this.
In specific embodiment of the utility model, no matter using the bore position of which kind of injected hole 1 and pressure relief vent 2 arrangement
Structure, injected hole 1 are not same time injection slurries, are to complete slip casting work using batch (-type) grouting mode, this
Be due to pressure relief vent 2 release without using pressure relief device, release is only carried out by the hole wall scope of freedom of itself, therefore slip casting early stage
When, it is necessary to using batch (-type) slip casting, can so ensure during each slip casting early stage, there is sufficient pressure relief vent 2 to carry out release,
Protect pit shaft 3.If the slip casting simultaneously of all injected holes 1, on the one hand higher to grouting equipment and personnel placement intensity, on the other hand
Carrying out the validity of pit shaft protection by pressure relief vent 2 to slip casting process can greatly reduce, and be unfavorable for safe and efficient Cementer
Make.
In specific embodiment of the utility model, the release of pressure relief vent 2 need not use any device, its release principle
It is to be used as pore water by pressure relief vent 2 hole wall of itself and discharge the scope of freedom to realize.With the continuous injection of slurries in landing surface, slurry
Pore water in liquid meeting Squeezing Ground, so as to form excess pore water pressure, now, grouting pressure to surrounding then by constantly spreading
Excess pore water pressure and to the surrounding soil body occur squeezing action, treat that the part excess pore water pressure is diffused near pressure relief vent 2
When, its excess pore water pressure is then by the water level in the direct lifting pressure relief vent 2 of hole wall of pressure relief vent 2, the water level in pressure relief vent 2
When rising to earth's surface, you can to stop slip casting.During water level rises in pressure relief vent 2, excess pore water pressure stops
Transmitted to the direction of pit shaft 3, and then serve release, protect the purpose of pit shaft 3.With the dissipation of excess pore water pressure, pressure relief vent 2
In water level be gradually reduced, when water level decreasing is to stable initial value, the injected hole continue slip casting, go round and begin again to be formed interval
The effect of slip casting-release-slip casting-release of formula, until the complete design grouting amount grouting behind shaft or drift lining of injected hole 1 terminates.
In specific embodiment of the utility model, the injected hole 1 of non-slip casting, when can be used as adjacent 1 slip casting of injected hole
Pressure relief vent use, its release mechanism is identical with the pressure release principle of above-mentioned pressure relief vent 2.
In specific embodiment of the utility model, injected hole 1 and pressure relief vent 2 are all carried out at closure in step 4)
Reason, in order to make the soil body after slip casting form a unified, complete reinforcing body.Preferably, pressure relief vent 2 enters in step 4)
Row closure processing is to carry out closure processing by low-pressure grouting.Because the distance between pressure relief vent 2 and pit shaft 3 are relative to injected hole
1 is closer with the distance between pit shaft 3, and pressure relief vent 2 avoids excessive grouting pressure using low pressure closure and directly acts on well
Cylinder 3, and cause the destruction of pit shaft 3.
As can be seen from the above description, the utility model the above embodiments realize following technique effect：
Deep vertical stratum consolidation filling system and its grouting method, pass through under existing wellbore conditions provided by the utility model
Multiple pressure relief vents are arranged in the excircle of near wellbore, unloading pressure protection is carried out to pit shaft during the high-pressure slip-casting of injected hole,
According to the pressure-relief effect of pressure relief vent, whole slip casting process uses batch (-type) slip casting.The utility model solves conventional table soil layer
Grouting method can not carry out the effective control problem of grouting pressure of deep stratum high pressure consolidation grouting, can fill up and there is no at present
The blank of overconsolidation stratum grouting method under existing wellbore conditions, avoids excessive grouting pressure and directly acts on pit shaft, and
The destruction of pit shaft is caused, drastically increases the stability of deep vertical stratum consolidation slip casting, and substantially reduces construction risk, society
Meeting, remarkable in economical benefits.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this area
Technical staff for, the utility model can have various modifications and variations.It is all within the spirit and principles of the utility model,
Any modification, equivalent substitution and improvements made etc., should be included within the scope of protection of the utility model.
Claims (10)
1. deep vertical stratum consolidation filling system under a kind of existing wellbore conditions, it is characterised in that the filling system includes：Well
Cylinder, pressure relief vent and injected hole；
The pit shaft is located at center position；Using the pit shaft position as the center of circle, set on the excircle A of the pit shaft
Multiple pressure relief vents, the radius of the excircle A is R1；Using the pit shaft position as the center of circle, in the outer of the pit shaft
Multiple injected holes are set on circumference B, and the radius of the excircle B is R2, and R2 ＞ R1；
The injected hole is also connected with the grouting pump in the pre grouting from the surface pumping plant of pit shaft periphery, for injecting slurries.
2. deep vertical stratum consolidation filling system under existing wellbore conditions as claimed in claim 1, it is characterised in that described to unload
The bore position arrangement for pressing hole and the injected hole is linear structure, the linear structure refer to the pit shaft the center of circle,
The center of circle of the injected hole and the center of circle of the pressure relief vent are located on the same line.
3. deep vertical stratum consolidation filling system under existing wellbore conditions as claimed in claim 1, it is characterised in that described to unload
It is dislocation type structure to press the bore position of hole and injected hole arrangement, and the dislocation type structure refers to the center of circle of the injected hole
The center of circle of the pressure relief vent adjacent positioned at two respectively with the bisector of the circle center line connecting angle of the pit shaft.
4. deep vertical stratum consolidation filling system under existing wellbore conditions as claimed in claim 2 or claim 3, it is characterised in that more
The number of the individual injected hole is 8, and the number of multiple pressure relief vents is 8.
5. deep vertical stratum consolidation filling system under existing wellbore conditions as claimed in claim 1, it is characterised in that described to unload
It is hybrid architecture to press the bore position of hole and injected hole arrangement, and the hybrid architecture refers in the center of circle of the pit shaft
With on the extended line of the circle center line connecting of the pressure relief vent, the centers of circle of the adjacent two pressure relief vents circle with the pit shaft respectively
The injected hole is provided with the bisector of heart line angle.
6. deep vertical stratum consolidation filling system under existing wellbore conditions as claimed in claim 5, it is characterised in that Duo Gesuo
The number for stating injected hole is 16, and the number of multiple pressure relief vents is 8.
7. deep vertical stratum consolidation filling system under the existing wellbore conditions as described in any one of claim 1-3,5-6, it is special
Sign is that the distance between two neighboring described injected hole L1 is more than the injected hole and the release nearest from the injected hole
The distance between hole L2.
8. deep vertical stratum consolidation filling system under existing wellbore conditions as claimed in claim 7, it is characterised in that adjacent two
The distance between individual injected hole L1 is more than 1.2 times of grout spreading range.
9. deep vertical stratum consolidation filling system under existing wellbore conditions as claimed in claim 1, it is characterised in that the note
The aperture for starching hole is 150mm~200mm, and the aperture of the pressure relief vent is 80mm~100mm.
10. deep vertical stratum consolidation filling system under existing wellbore conditions as claimed in claim 1, it is characterised in that described
The span that excircle A radius is R1 is 8-12m, and the span that the radius of the excircle B is R2 is 18-22m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720592591.5U CN206737920U (en) | 2017-05-25 | 2017-05-25 | Deep vertical stratum consolidation filling system under existing wellbore conditions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720592591.5U CN206737920U (en) | 2017-05-25 | 2017-05-25 | Deep vertical stratum consolidation filling system under existing wellbore conditions |
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| Publication Number | Publication Date |
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| CN206737920U true CN206737920U (en) | 2017-12-12 |
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ID=60568211
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| CN201720592591.5U Expired - Fee Related CN206737920U (en) | 2017-05-25 | 2017-05-25 | Deep vertical stratum consolidation filling system under existing wellbore conditions |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060767A (en) * | 2017-05-25 | 2017-08-18 | 安徽理工大学 | Deep vertical stratum consolidation filling system and its grouting method under existing wellbore conditions |
| CN109973097A (en) * | 2019-04-15 | 2019-07-05 | 安徽理工大学 | The deflection shaft of vertical well administering method of surface grout injection reinforcing deep alluvium |
| CN111365002A (en) * | 2020-03-30 | 2020-07-03 | 北京中煤矿山工程有限公司 | Ground pre-grouting method for small-section high wellbore in complex stratum |
| CN111894595A (en) * | 2020-08-11 | 2020-11-06 | 昆明理工大学 | Pressure relief prevention and control method for surrounding rock burst of side wall of vertical shaft |
-
2017
- 2017-05-25 CN CN201720592591.5U patent/CN206737920U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060767A (en) * | 2017-05-25 | 2017-08-18 | 安徽理工大学 | Deep vertical stratum consolidation filling system and its grouting method under existing wellbore conditions |
| CN109973097A (en) * | 2019-04-15 | 2019-07-05 | 安徽理工大学 | The deflection shaft of vertical well administering method of surface grout injection reinforcing deep alluvium |
| CN109973097B (en) * | 2019-04-15 | 2020-05-12 | 安徽理工大学 | Method for treating deviated vertical shaft of ground grouting reinforced deep punching and laminating layer |
| CN111365002A (en) * | 2020-03-30 | 2020-07-03 | 北京中煤矿山工程有限公司 | Ground pre-grouting method for small-section high wellbore in complex stratum |
| CN111365002B (en) * | 2020-03-30 | 2021-07-30 | 北京中煤矿山工程有限公司 | Ground pre-grouting method for small-section high wellbore in complex stratum |
| CN111894595A (en) * | 2020-08-11 | 2020-11-06 | 昆明理工大学 | Pressure relief prevention and control method for surrounding rock burst of side wall of vertical shaft |
| CN111894595B (en) * | 2020-08-11 | 2021-07-16 | 昆明理工大学 | Pressure relief prevention and control method for surrounding rock burst of side wall of vertical shaft |
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Granted publication date: 20171212 Termination date: 20180525 |