CN103233699A - Multiple-working-face parallel working process for shaft ground pre-grouting - Google Patents
Multiple-working-face parallel working process for shaft ground pre-grouting Download PDFInfo
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- CN103233699A CN103233699A CN2013101557821A CN201310155782A CN103233699A CN 103233699 A CN103233699 A CN 103233699A CN 2013101557821 A CN2013101557821 A CN 2013101557821A CN 201310155782 A CN201310155782 A CN 201310155782A CN 103233699 A CN103233699 A CN 103233699A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 24
- 238000007569 slipcasting Methods 0.000 claims description 107
- 238000005553 drilling Methods 0.000 claims description 15
- 241000209094 Oryza Species 0.000 claims description 9
- 235000007164 Oryza sativa Nutrition 0.000 claims description 9
- 235000009566 rice Nutrition 0.000 claims description 9
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000000523 sample Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 20
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001061264 Astragalus Species 0.000 description 1
- 241000269793 Cryothenia peninsulae Species 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The invention provides a multiple-working-face parallel working process for shaft ground pre-grouting. The process is accurate in positioning and high in working efficiency. The technical scheme includes that the process comprises the steps of implementing an innovative process route which is different from traditional grouting for ground pre-grouting, dividing a shaft into a plurality of working faces, conducting multi-section grouting, during 800-1000m ultra-deep shaft operation, according to field conditions, enabling the 200-300m section to serve as a main grouting section, and dividing the main grouting section into three layers, wherein the first layer is the straight-hole grouting section, the second layer is the S-hole grouting section, and the third layer is the S-hole grouting section. According to the process, the technology of a straight hole and multiple-working-face S holes is adopted, the parallel working process that the vertical shaft ground pre-grouting is divided into a plurality of portions for simultaneous construction is initiated, specific positions in traditional processes are not required to be adopted, parallel operation of construction such as freezing and shaft sinking is possible, while the quality is guaranteed, the construction speed is accelerated, and the shaft building cycle is shortened for construction units.
Description
Technical field
The present invention relates to pre-slurry injection technique field, many work planes of the pre-slip casting of especially a kind of wellbore surface parallel operations technology.
Background technology
The pre-slip casting of present domestic wellbore surface mainly contains full straight hole, the two types of schemes in S hole.The straight hole slip casting of traditional scheme adopts the water source rig to bore injected hole, take pithead position, just can freeze after can only waiting slip casting to finish or postorder construction such as sinking shaft, can not annotate, freeze, parallel operations such as cutter, well construction period is long, general 800 to 1000 meters pit shaft, the slip casting cycle is all about a year and a half.S hole directional technology is relatively backward, S hole construction technology difficult point is the inaccuracy of directed track, this directional technology with the domestic independent research of ore deposit industry employing at present has very big relation, and ore deposit, China ground industry directional technology is backward relatively, and means are more single.Often because directed TRAJECTORY CONTROL is not up to standard, cause the slip casting range of scatter can't hand over circle, slip casting effect is undesirable, has sizable risk, and the failure of some case histories at present allows many Construction units when selecting constructure scheme, has produced resentment.
Summary of the invention
The object of the present invention is to provide a kind of location accurate, many work planes of the pre-slip casting of a kind of wellbore surface parallel operations technology that operating efficiency is high.Its technical scheme is: enforcement is different from the innovative technology route of traditional slip casting to pre grouting from the surface, divides a plurality of work planes with pit shaft, the slip casting of multisection type, when the operation of 800-1000 rice ultradeep well tube, according to field condition, with 200 to 300 meters as a total slip casting section, be divided into three layers.First floor is straight hole slip casting section, and the second layer is S hole slip casting section, and the 3rd layer is S hole slip casting section.The straight injected hole of first floor once creeps into, begin the slip casting operation during to the initial slip casting degree of depth, descended sleeve pipe, well cementation, the straight hole section begins the slip casting operation, second layer S injected hole enters design slip casting circle footpath when being directed to 480 meters, 177.8mm sleeve pipe under 0-480 rice, well cementation, beginning slip casting operation, continue to creep into the 152mm drill bit, circulation slip casting, the slip casting operation that begins to circulate, the 3rd layer of S injected hole is directed to 780 meters and enters slip casting circle footpath, 177.8mm sleeve pipe under the 0-780m, well cementation continues to creep into circulation slip casting with the 152mm drill bit, the slip casting operation that begins to circulate, slip casting to 1000m slip casting finishes.Each layer slip casting section all adopts the mode of setting of casing well cementation to the epimere junction from ground.Adopt wireless drilling measurer in time to measure in drilling process, do not stopping under the brill situation, mud pulse generator sends to ground with the data that the down-hole probe records, and after the machine system acquisition is handled as calculated, obtains real-time well bore parameter and formation parameter.The orientation with drilling system obtains drilling parameter by groups of acceleration sensors, fluxgate sensor group and temperature pick up, through being processed into the specific format coding, produce pulse signal by impulse generator, be passed to the aperture on the face of land by mud or cable, by the pressure sensor that is arranged on the aperture fluctuation signal in the drilling mud is delivered to ground DIB case, the conversion of signal income, filtering are delivered to the ground handling station after handling.
The present invention adopts straight hole+many work planes S hole technology, and has initiated the parallel operations technology that the vertical pre grouting from the surface divides several parts to construct simultaneously.Simultaneously, owing to adopt directional technology to carry out creeping into of S injected hole, so the position of injected hole can be adjusted according to the job site, and needn't adopt ad-hoc location in the traditional handicraft, for freeze, construction such as sinking shaft carry out parallel operations provide may, the quoting of a large amount of new technologies is when ensuring the quality of products, accelerated speed of application, for well construction period has shortened in Construction unit.
Description of drawings
Fig. 1 is slip casting plan view of the present invention;
Fig. 2 is slip casting sectional drawing of the present invention;
Fig. 3 is slip casting hole count of the present invention and workload;
Fig. 4 is that slip casting section of the present invention is divided and grouting pressure is determined;
The specific embodiment
As shown in Figure 1, first floor straight hole slip casting section is represented with AZ01, AZ02, AZ03, AZ04, AZ05; Second layer S hole slip casting section is represented with BS01, BS02, BS03, BS04, BS05; The 3rd layer of S hole slip casting section represented with CS01, CS02, CS03, CS04, CS05.Label among Fig. 1: 1 is S hole perforate circle footpath; 2 is straight hole slip casting circle footpath; 3 is pit shaft circle footpath; 4 are grouting theory friendship astragal.
As shown in Figure 2, label among Fig. 2: 5 is second layer S hole track; 6 is the 3rd layer of S hole track; 7 is first floor work plane slip casting initial depth; 8 is second layer work plane slip casting initial depth; 9 is the 3rd layer of work plane slip casting initial depth.
As shown in Figure 3, slip casting hole count of the present invention and workload have been listed in detail.
As shown in Figure 4, having listed slip casting section division of the present invention and grouting pressure in detail determines.
Now further set forth in conjunction with the present invention of Fig. 1, Fig. 2:
During construction, straight injected hole once creeps into, and begins the slip casting operation during to the initial slip casting degree of depth.(the 3rd layer 800 meters) have descended sleeve pipe, well cementation, and the straight hole section can begin the slip casting operation.
Second layer S injected hole enters design slip casting circle footpath, 177.8mm sleeve pipe under 0-480 rice, well cementation when being directed to 480 meters, beginning slip casting operation continues to creep into circulation slip casting with the 152mm drill bit, the slip casting operation that begins to circulate during to 780 meters, needs the 3rd work plane to stop to creep into or the cleaning bottom of hole operation.
The 3rd layer of S injected hole is directed to 780 meters and enters slip casting circle footpath, 177.8mm sleeve pipe under the 0-780m, and well cementation continues to creep into the 152mm drill bit, circulation slip casting, the slip casting operation that begins to circulate, slip casting to 1000m slip casting finishes.
After adopting the present invention, because three (a plurality of) work planes parallel operations, be equivalent to that a pit shaft is divided into three sections (multistages) and begin slip casting simultaneously, shortening well construction period greatly, is example with 1000 meters medium size coal mines, can shift to an earlier date three to six months and finish the construction period, with 1,000,000 yuan of/day calculating of on average producing coal, accelerated the investment payback time greatly, saved artificial, the cost of equipment of construction period simultaneously, very huge economic benefit has been arranged.
Embodiment:
1, sets up the slip casting station
2, rig begins to creep into operation
(1), shaft location arranges straight hole, first floor slip casting work plane initial depth is 200m, is 520 meters (with 40 meters of second layer slip casting section handing-over) eventually deeply.
(2), second layer S injected hole is arranged in away from well head 40-60 rice, reaches 480 meters orientations at drilling depth and enters straight hole projection coordinate or evenly distribute in footpath projection place of straight hole slip casting circle, 480 meters of the initial slip casting degree of depth of second layer work plane are 820 meters eventually deeply;
(3), the 3rd layer of S injected hole be arranged in away from well head 40-60 rice, reaches 780 meters orientations at drilling depth and enter straight hole projection coordinate or evenly distribute in footpath projection place of straight hole slip casting circle, 780 meters of the 3rd layer of initial slip casting degree of depth of work plane are 1000 meters eventually deeply.
3, utilize drilling trace and the target spot of MWD orientation with drilling technology control S injected hole.
This technology can be controlled the second layer (the 3rd layer) S hole in real time by the prior track of design, locates to enter straight hole projection coordinate or B layer S hole evenly distributes in footpath projection place of straight hole slip casting circle at 480m (780m).
4, determine grouting parameter
(1), slip casting circle footpath determines
Dig waste footpath according to pit shaft, for guaranteeing explosion the influence of grouting curtain is reduced to minimum (explosion influences tape thickness and is generally about 2.5m), water seal curtain is not less than the requirement of 6m, can determine the distance of pit shaft injection slurry diffusion.Therefore each injected hole diffusion radius reaches about 8m and can reach the slip casting requirement, crosses conference and causes waste, and too small meeting can not form effective curtain, influences slip casting effect.
According to the waste footpath of cutting (Φ 10.0m) of certain pitshaft rock section, so straight hole slip casting circle directly is defined as 15m.
Circle footpath, S hole is determined according to the job site, is principle to make things convenient for drilling equipment to put, and generally gets final product in 40-60 rice scope.
(2), determining of slip casting hole count
According to the slip casting empirical formula:
Slip casting hole count N=3.14* (10.0+2.5*2)/1.2* (15.0-7.5)=5.23 (5)
According to the schematic design principle, determine that each layer injected hole number is:
5 of straight holes
5 in first floor S hole
5 in second layer S hole
Amount to 15 of injected holes, see Fig. 3.
(3), the division that slip casting section is high and pressure are determined
According to the geologic information that certain colliery provides, we have carried out the high division of slip casting section at the stratum, see Fig. 4.
Setting of casing when straight injected hole once creeps into to the initial slip casting degree of depth, well cementation, beginning slip casting operation, when annotating to the 480m interface, second and third layer work plane needs suspension of works.
Second layer S injected hole enters design slip casting circle footpath when being directed to 480 meters, 177.8mm sleeve pipe under 0-480 rice, and well cementation, beginning slip casting operation continues to creep into the 152mm drill bit, the slip casting operation that begins to circulate, when annotating to 780 meters, the 3rd layer of work plane needs suspension of works.
The 3rd layer of S injected hole is directed to 780 meters and enters slip casting circle footpath, 177.8mm sleeve pipe under the 0-780m, and well cementation continues to creep into the 152mm drill bit, circulation slip casting, the slip casting operation that begins to circulate, slip casting to 1000m slip casting finishes.
In the Grouting engineering bid process of certain 1200 meters ultradeep well in colliery, construction period of the same trade 488 days, adopt the scheme of this technological design, estimated by seven national slip casting aspect authoritative experts, elect outstanding scheme acceptance of the bid as, this technology shortens to 360 days with construction period, shaft building unit namely enters the scene and goes into operation (the common law construction needs Grouting engineering all to finish to begin the shaft building construction) after the straight hole mortar depositing construction is finished (four months), save well construction period greatly, only saved personnel, cost of equipment above 1,000 ten thousand yuan.
Claims (6)
1. many work planes of the pre-slip casting of wellbore surface parallel operations technology, it is characterized in that: the innovative technology route of pre grouting from the surface being implemented to be different from traditional slip casting, divide a plurality of work planes with pit shaft, the slip casting of multisection type, when the operation of 800-1000 rice ultradeep well tube, according to field condition, with 200 to 300 meters as a total slip casting section, be divided into three layers.
2. many work planes of the pre-slip casting of a kind of wellbore surface according to claim 1 parallel operations technology, it is characterized in that: first floor is straight hole slip casting section, and the second layer is S hole slip casting section, and the 3rd layer is S hole slip casting section.
3. many work planes of the pre-slip casting of a kind of wellbore surface according to claim 1 parallel operations technology, it is characterized in that: the straight injected hole of first floor once creeps into, begin the slip casting operation during to the initial slip casting degree of depth, descended sleeve pipe, well cementation, the straight hole section begins the slip casting operation, and second layer S injected hole enters design slip casting circle footpath, 177.8mm sleeve pipe under 0-480 rice when being directed to 480 meters, well cementation, beginning slip casting operation continues to creep into circulation slip casting with the 152mm drill bit, the slip casting operation begins to circulate, the 3rd layer of S injected hole is directed to 780 meters and enters slip casting circle footpath, 177.8mm sleeve pipe under the 0-780m, well cementation, continue to creep into the 152mm drill bit, circulation slip casting, the slip casting operation that begins to circulate, slip casting to 1000m slip casting finishes.
4. many work planes of the pre-slip casting of a kind of wellbore surface according to claim 1 and 2 parallel operations technology is characterized in that: the mode that each layer slip casting section all adopts setting of casing to cement the well from ground to the epimere junction.
5. many work planes of the pre-slip casting of a kind of wellbore surface according to claim 1 and 2 parallel operations technology, it is characterized in that: adopt wireless drilling measurer in drilling process, in time to measure, do not stopping under the brill situation, mud pulse generator sends to ground with the data that the down-hole probe records, after the machine system acquisition is handled as calculated, obtain real-time well bore parameter and formation parameter.
6. many work planes of the pre-slip casting of a kind of wellbore surface according to claim 1 and 2 parallel operations technology, it is characterized in that: the orientation with drilling system obtains drilling parameter by groups of acceleration sensors, fluxgate sensor group and temperature pick up, through being processed into the specific format coding, produce pulse signal by impulse generator, be passed to the aperture on the face of land by mud or cable, by the pressure sensor that is arranged on the aperture fluctuation signal in the drilling mud is delivered to ground DIB case, the conversion of signal income, filtering are delivered to the ground handling station after handling.
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| CN2013101557821A CN103233699A (en) | 2013-04-24 | 2013-04-24 | Multiple-working-face parallel working process for shaft ground pre-grouting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835729A (en) * | 2013-11-11 | 2014-06-04 | 北京中煤矿山工程有限公司 | Ground pre-grouting strengthening technology for deep long-distance roadway surrounding rock |
| CN109026011A (en) * | 2018-09-12 | 2018-12-18 | 北京中煤矿山工程有限公司 | Huge thickness rich water Denying Formation dolomite shaft of vertical well water-stop curtain controls grouting process |
| CN109577988A (en) * | 2018-11-16 | 2019-04-05 | 北京中煤矿山工程有限公司 | A kind of blind oblique vertical shaft parallel construction method of metal mine |
| CN109854286A (en) * | 2019-01-09 | 2019-06-07 | 三峡大学 | A kind of the visual testing equipment and experimental method of the slip casting of ultrasonic wave aux. pressure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835729A (en) * | 2013-11-11 | 2014-06-04 | 北京中煤矿山工程有限公司 | Ground pre-grouting strengthening technology for deep long-distance roadway surrounding rock |
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| CN109026011A (en) * | 2018-09-12 | 2018-12-18 | 北京中煤矿山工程有限公司 | Huge thickness rich water Denying Formation dolomite shaft of vertical well water-stop curtain controls grouting process |
| CN109577988A (en) * | 2018-11-16 | 2019-04-05 | 北京中煤矿山工程有限公司 | A kind of blind oblique vertical shaft parallel construction method of metal mine |
| CN109577988B (en) * | 2018-11-16 | 2021-07-02 | 北京中煤矿山工程有限公司 | Parallel construction method for blind inclined shaft of metal mine |
| CN109854286A (en) * | 2019-01-09 | 2019-06-07 | 三峡大学 | A kind of the visual testing equipment and experimental method of the slip casting of ultrasonic wave aux. pressure |
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Application publication date: 20130807 |