CN102877884B - The difficult to understand grey top transformation of a kind of mine based on km directional drilling technology and construction method - Google Patents

The difficult to understand grey top transformation of a kind of mine based on km directional drilling technology and construction method Download PDF

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Publication number
CN102877884B
CN102877884B CN201210348377.7A CN201210348377A CN102877884B CN 102877884 B CN102877884 B CN 102877884B CN 201210348377 A CN201210348377 A CN 201210348377A CN 102877884 B CN102877884 B CN 102877884B
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China
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boring
slip casting
understand
directional drilling
difficult
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CN201210348377.7A
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Chinese (zh)
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CN102877884A (en
Inventor
卜昌森
翟明华
李术才
孙春江
李伟
郭信山
刘人太
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山东能源集团有限公司
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Abstract

The present invention relates to a kind of mine based on km directional drilling technology grey top difficult to understand remodeling method.It comprises the probing work using km directional drilling machine to implement mine grey top difficult to understand grout transformation, and boring is that concordant is nonlinear, and boring arranges that form can be " a hole perforate, porous bifurcated ", adopts protrusive slip casting.Austria of the present invention grey top remodeling method, solves when mining more than artesian aquifer, the safe working problem in impermeable layer thickness, insufficient strength situation.The structure of shutoff Ordovician limestone karst growth on a large scale and Hidden Fault Structures under coal mining or driving face condition can not taken, change aquiclude by the certain limit of grey for Austria top into by pervious layer, reach mineral resources that liberation threatens by artesian water and driving and back production can be implemented continuously in such circumstances, do not stay or stay less anti-(every) water coal column, improve the object of resource recovery.

Description

The difficult to understand grey top transformation of a kind of mine based on km directional drilling technology and construction method

Technical field

The present invention relates to the difficult to understand grey top transformation of a kind of mine based on km directional drilling technology and construction method, belong to the underground construction water damage prevention and control field such as mine down-hole.

Background technology

At present in Deep Confined seam mining waterborne, the thin layer aquifer on to ash difficult to understand is had to carry out the case of grout transformation, but along with mining depth increases, hydraulic pressure constantly increases, when impermeable layer thickness when between mined bed and the Ordovician period huge thick limestone aquifer is less than safe thickness, grow because of Ordovician limestone karst and be difficult to carry out Draining hook, there is no effective safe working method at present; Have the case adopting filling method to reduce ore deposit pressure collapse dept raising effective water-resisting layer thickness, but the method still needs reserved Impermeable basement, causes ample resources to waste; Traditional tunnel or the transformation of exploiting field base plate, the number of openings is large, and hole utilization rate is low, and technical matters is complicated, and is difficult to use in the Regional of concordant on a large scale to high pressure aquifer in Ordovician limestone.

Summary of the invention

The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of mine based on km directional drilling technology grey top difficult to understand remodeling method is provided, realize transforming the pre-grouting at the grey top of Austria under can realizing not taking driving and exploitation work plane condition, shutoff grey top difficult to understand karsts developing area structure and Hidden Fault Structures, increase base plate mechanical strength, the ash of the Austria in certain limit rock stratum is made to become aquiclude from pervious layer, increase water proof base plate thickness, reach the requirement that mine geological hazards specifies about water bursting coefficient, thus improve lower group coal mining rate.Meanwhile, boring the number of openings is significantly reduced, the reduction of erection time.

For achieving the above object, the present invention adopts following technical proposals:

A kind of mine based on km directional drilling technology grey top remodeling method (as Fig. 1 and Fig. 2) difficult to understand, comprising: (1) uses km directional drilling machine to implement floor grouting transformation probing, holes in the soleplate.(2) boring is that concordant is nonlinear as shown in Figure 1, can according to Practical Project Demand Design.(3) hole A, boring A-1, boring A-2, boring A-3 and A-4 as shown in Figure 1, and boring arranges that form is " a hole perforate, porous bifurcated ", and perforate order is by inside the lateral in transformation district; (4) slip casting process adopts protrusive slip casting.

Described boring is that concordant is nonlinear, can carry out radian and experiment material according to actual condition to boring, as boring A-1 ~ A-4.

Described boring arranges that form can be many bifurcateds, and every bar bifurcated drillable length can be determined according to actual condition.Spacing as the boring of Fig. 2 bifurcated is determined by grouting serous fluid dilation angle and actual condition.

Described protrusive slip casting is, in boring, water burst occurs and retreats brill, carry out slip casting.

Described boring method for arranging is a point sequence (Fig. 2), and a sequence boring of first constructing, two sequences of then constructing supplement boring, and two sequences supplement the effect that slip casting inspection and after-teeming are played in boring.Two sequence drilling constructions order (Fig. 2,1-1 → 1-6,2-1 → 2-5) are to be implemented inside the lateral in transformation region Ordovician limestone.

Described boring method for arranging, should make boring can penetrate the permeable structures such as tomography by intersect with large-angle.

The present invention also discloses a kind of mine based on km directional drilling technology grey top difficult to understand rebuilding construction method, the steps include:

(1) probing chamber position and boring position of opening is determined;

(2) water proof base plate safe thickness is calculated according to mine geological hazards relevant regulations;

(3) main borehole and bifurcated boring is designed according to grout transformation technical scheme and water proof safe thickness;

(4) design non-linear concordant data of holes drilled, data of holes drilled comprises drillable length, bifurcated and radian etc.;

(5) orifice tube is installed, and carries out pressure testing according to corresponding specification; ;

(5) drilling operation is carried out according to by the order inside lateral;

(6) in aquifer, grey top difficult to understand, all slip casting operations adopt protrusive slip casting, carry out next drilling construction after all completing to one borehole probing slip casting;

(7) use km directional drilling machine to check slip casting effect, and carry out supplementary slip casting as required.

Protrusive slip casting in the present invention is prior art, and relevant art index obtains by document, does not repeat them here.

The invention has the beneficial effects as follows: can realize not taking driving or exploiting work plane to the grout transformation at the grey top of Austria, shutoff grey top difficult to understand karsts developing area structure and Hidden Fault Structures, increase base plate mechanical strength, thus make aquifer in Ordovician limestone change water barrier into reach safe thickness, organize coal deep mining problem under solving North China type coalfield.

Accompanying drawing explanation

Fig. 1 is the base plate transformation generalized section of technical system of the present invention.

Fig. 2 is the base plate transformation floor map of technical system of the present invention.

Detailed description of the invention

Certain colliery is deep-well flood mine, and buried depth is more than 700m, and hydrostatic hydraulic pressure reaches 6Mpa, and its exploiting field floor strata (Fig. 1) is respectively: lower group coal 1, fluid-tight shale layer 2, Ordovician limestone 3.The not enough problem of the base plate safe thickness that blocks water is faced with to carry out lower group of coal mining.Grow in stope region simultaneously and have two groups of water conductive fault (water conductive fault 9,10).For carrying out grout transformation to Ordovician limestone aquifer and permeable structure, under the prerequisite ensureing Safety of Coal Mine Production, adopting technical scheme of the present invention to transform in advance exploiting field base plate, having liberated mineral resources.Implementation process is as follows:

(1) as Fig. 2, require in district dip tunnel, lay probing chamber according to engineering, to drill slip casting to stope region base plate aquifer in Ordovician limestone.

(2) slip casting adopts cement grout, design dilation angle 10 ~ 15m.A bifurcated sequence whole hole (1-1 ~ 1-6) line space design of holing of holing is between 20m ~ 30m.As shown in Figure 2, boring and water conductive fault 9 and 10 should meet intersect with large-angle and penetrate tomography in design and construction boring.

(3) after a sequence drilling construction completes, carry out two sequences and supplement drilling construction, as slip casting inspection eye and the after-teeming hole of a sequence boring.

The sequence of construction of (4) two sequence borings is carries out inside the lateral in transformation district, and a sequence the 1st is holed to the 6th boring 1-1 → 1-6; Two sequences the 1st are supplemented boring and are supplemented boring to the 5th.

(5) after each boreholes drilling slip casting all completes, next drilling construction is carried out.

(6) after probing slip casting all completes, after slurries setting and harden 7d, km directional drilling machine is adopted to carry out slip casting effect inspection according to related specifications.

(7), in borehole inspection process, single hole water yield meets mine geological hazards associated specifications, and grout transformation reaches re-set target.

Claims (3)

1., based on a mine grey top difficult to understand rebuilding construction method for km directional drilling technology, the steps include:
(1) probing chamber position and boring position of opening is determined;
(2) water proof base plate safe thickness is calculated;
(3) main borehole and bifurcated boring is designed according to grout transformation technical scheme and water proof safe thickness;
(4) design non-linear concordant data of holes drilled, parameter comprises drillable length, bifurcated and radian;
(5) orifice tube is installed, and carries out pressure testing;
(5) drilling operation is carried out according to by the order inside lateral;
(6) in aquifer, grey top difficult to understand, all slip casting operations adopt protrusive slip casting, carry out next drilling construction after all completing to one borehole probing slip casting;
(7) use km directional drilling machine to check slip casting effect, and carry out supplementary slip casting as required.
2. construction method as claimed in claim 1, is characterized in that, boring arranges that form is " a hole perforate, porous bifurcated ".
3. construction method as claimed in claim 1, it is characterized in that, boring can penetrate water conductive fault by intersect with large-angle.
CN201210348377.7A 2012-09-13 2012-09-13 The difficult to understand grey top transformation of a kind of mine based on km directional drilling technology and construction method CN102877884B (en)

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CN103867229B (en) * 2014-03-12 2016-05-11 河北煤炭科学研究院 A kind of coal mine large-mining is dark prevents and treats comprehensive treatment method for water with lower group of coal mining
CN104929617A (en) * 2014-12-18 2015-09-23 安徽恒源煤电股份有限公司 Water filling pressure test method for grouting pipelines
CN104847379B (en) * 2015-03-20 2016-01-13 山东科技大学 The method of a kind of Austria grey top grouting and reinforcing floor undulation
CN104989403B (en) * 2015-06-02 2017-05-10 国投新集能源股份有限公司 Method for reconstructing floor limestone aquifer into natural-artificial composite integrated aquiclude
CN106593300A (en) * 2016-12-02 2017-04-26 淮北矿业股份有限公司 Thin-layer limestone ground directional drilling horizontal multi-stage branch grouting drill hole
CN106703692A (en) * 2016-12-02 2017-05-24 淮北矿业股份有限公司 Method using surface orientation bedding drilling grouting to reinforce laminar limestone
CN106948843B (en) * 2017-03-21 2018-11-23 山东省邱集煤矿 A kind of bilayer multiple-limb concordant bored grouting transformation dual limestone aquifer method of roof and floor
CN108952776A (en) * 2018-08-27 2018-12-07 山东省邱集煤矿有限公司 A kind of method of the equidistant horizontal orientation concordant bored grouting transformation dual limestone of roof and floor
CN110017155A (en) * 2019-05-23 2019-07-16 合肥工业大学 A kind of coal working face top plate rich water gravel layer grouting and reinforcing erection water-proof method

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