CN105525910A - Multi-section blocking and double-end observation method - Google Patents

Multi-section blocking and double-end observation method Download PDF

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Publication number
CN105525910A
CN105525910A CN201510903125.XA CN201510903125A CN105525910A CN 105525910 A CN105525910 A CN 105525910A CN 201510903125 A CN201510903125 A CN 201510903125A CN 105525910 A CN105525910 A CN 105525910A
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China
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probe unit
draw
water
pressure
observation
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CN201510903125.XA
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Chinese (zh)
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CN105525910B (en
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刘伟韬
宋文成
穆殿瑞
王晓
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山东科技大学
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells

Abstract

The invention discloses a multi-section blocking and double-end observation method. An observation system adopted in the method comprises a detection system, a blocking system and a supply propulsion system. The detection system comprises a first detection unit, a second detection unit, a third detection unit and a fourth detection unit. A clamping groove connector is arranged between every two adjacent detection units. Each detection unit comprises a communicating pipe and a water leaking pipe which are arranged in parallel. The communicating pipes and the water leaking pipes of the adjacent detection units are connected through the clamping groove connectors. The communicating pipes of every two adjacent detection units communicate with each other. The water leaking pipe located in the first detection unit and the water leaking pipe located in the second detection unit communicate with each other, and the water leaking pipe located in the third detection unit and the water leaking pipe located in the fourth detection unit communicate with each other. The water leaking pipe located between the second detection unit and the third detection unit is divided into two independent parts by the corresponding clamping groove connector, and the two parts include a first detection section and a second detection section. By means of the observation method, water can be injected into the two detection sections simultaneously, the number of measurement ends is increased, and the measurement efficiency is improved.

Description

Multistage shutoff both-end observation procedure

Technical field

The invention belongs to roof and floor rock mass damage scope determination techniques field, mine, be specifically related to multistage shutoff both-end observation procedure.

Background technology

The measurement of mine roof and floor rock mass damage scope is the important parameter of mark coal petrography occurrence status.When studying mine water management, it is a critical underlying parameter, and therefore, the formation of the conduit pipe in country rock is adopted in research, is just necessary grasp strata movement rule and determine roof and floor rock mass damage scope.The means such as usual employing numerical simulation, empirical formula expectation, field measurement.But because field condition is complicated, to a certain extent, numerical simulation well can not reflect field condition, the blindness that empirical formula is estimated is comparatively large, and along with adopting dark increasing, empirical formula applicability worse and worse.

First, along with mining depth increases, boring is easily out of shape at short notice, need to carry out Quick Measurement to boring, and drillable length is roughly at 50-70m, test site often uses single hop water filling visualizer, and each propelling measures length (about 1m), this adds increased and advances number of times and observation time.Secondly, fail in existing multistage scope to realize shutoff observation integration, and during multistage observation, only have a measuring junction, observed efficiency increases little.Finally, in actual observation process, shutoff pressure generally gets 2.5MPa, and boring observation hydraulic pressure generally gets 0.1MPa, and in boring, observation source pressure can not be excessive, otherwise, dilating effect can be formed to preexisting crack in borehole wall.Under same external source, how to allow shutoff water source in integrated scope work under respective pressure with observation water source simultaneously.

Prior art fails to solve above-mentioned three problems simultaneously.

Summary of the invention

The object of the present invention is to provide a kind of multistage shutoff both-end observation procedure, this observation procedure simultaneously to water filling in two detection sections, can add measuring junction, improves measurement efficiency.

Its technical solution comprises:

For a shutoff both-end observation procedure for wall-rock crack, its observation system adopted comprises detection system, plugging system and supply propulsion system, and described detection system is arranged in the boring of wall-rock crack,

Described detection system comprises the first probe unit, the second probe unit, the 3rd probe unit, the 4th probe unit, pressure-regulating valve, draw-in groove joint and U-shaped pipeline, described first probe unit is positioned at the outermost of boring, described 4th probe unit is positioned at the inner side of boring, described draw-in groove joint is arranged between adjacent probe unit, the afterbody of the front portion of the first probe unit and the 4th probe unit, each probe unit includes the communicating pipe and the pipe that leaks that are arranged in parallel, in each draw-in groove joint, be provided with swollen hole;

The draw-in groove joint of the 4th probe unit afterbody is provided with hydraulic pressure converting system, described hydraulic pressure converting system comprises hydraulic pressure converter and draw-in groove union, described hydraulic pressure converter comprises piston and matrix two parts, described piston left side area is greater than right side area, the water-guiding hole be interconnected is provided with in described piston, the water-guiding hole being positioned at right-hand member is connected with described draw-in groove joint by aperture, by matrix inner wall sealing when the water-guiding hole being positioned at left end starts, the right-hand member of piston is provided with boss, described boss is used for carrying out spacing to the spring one in piston, described piston keeps being communicated with or closing in order to control left end water-guiding hole and the boring in wall-rock crack,

Described plugging system comprises shutoff capsule, and described shutoff capsule surrounds the outside of each draw-in groove joint, has been provided with swollen hole in described draw-in groove joint;

Described supply propulsion system comprises water flood operations platform one, water flood operations platform two and oil gear, and above each probe unit leaks pipe, be provided with oil pipe road, described oil gear comprises oil pressure tank, accumulator and stop valve;

Described observation procedure comprises the following steps:

A drilling, multiple borings of predetermined angular of successively constructing in top board or floor rock in coal petrography tunnel, hole depth 30-70m;

B installs observation system, successively the communicating pipe of the first probe unit, the second probe unit, the 3rd probe unit and the 4th probe unit and the pipe that leaks are linked together by draw-in groove joint, the communicating pipe of adjacent detector unit is made to keep being communicated with, be positioned at the first probe unit to keep being communicated with the pipe that leaks of the 4th probe unit with the second probe unit, the 3rd probe unit, the pipe that leaks between the second probe unit and the 3rd probe unit is divided into independently two parts by draw-in groove joint, is respectively detection I section and detection II section;

Setting pressure control valve in draw-in groove joint between the first probe unit and the second probe unit, between the 3rd probe unit and the 4th probe unit, one end that 4th probe unit stretches into boring connects U-shaped pipeline, hydraulic pressure converting system is arranged on the draw-in groove joint of the 4th probe unit afterbody;

Shutoff capsule is surrounded the outside of each draw-in groove joint, be connected with detection I section by water flood operations platform one, water flood operations platform two was connected with communicating pipe, was connected on oil pipe road with oil gear;

C closes boring, arrives after initial position until it, injects water source reach predetermined initial water pressure to play swollen shutoff capsule to it with water flood operations platform one and water flood operations platform two in observation system;

D measures flowing water vector parameters, comprises following sub-step:

(1) arranging hydraulic pressure converter opening pressure is 2.5 than m, gets observation hydraulic pressure P leftfor 0.1MPa;

(2) within communicating pipe, injecting 2.5MPa water source by water flood operations platform two, on the one hand playing swollen shutoff capsule by playing a swollen hole, on the other hand, this water source by after the conversion of hydraulic pressure converter with 0.1MPa to water filling in the 4th probe unit, observe; Keep hydraulic pressure after 1-2 minute, read and calculate average wastage L in this time period 1; Meanwhile, directly provide 0.1MPa to observe water source by water flood operations platform one in the first probe unit, correspondence reads and calculates average wastage L in this time period 2;

(3) step (2) is connect, the hydraulic oil of certain pressure is provided in pressure-regulating valve by oil gear, piston group is moved to the other end makes square opening be communicated with, now, first probe unit is communicated with the second probe unit, 4th probe unit is communicated with the 3rd probe unit, open stop valve and accumulator, keep hydraulic oil pressure, make observation water source respectively to the second probe unit, supplement in 3rd probe unit, and work on 0.1MPa pressure, wait for 1-2 minute, read respectively and calculate first, two probe units and the 3rd, the average wastage L of four probe units 3, L 4, now, L 3-L 2be the average wastage of the second probe unit, L 4-L 1be the average wastage of the 3rd probe unit,

E withdraws pressure water source and hydraulic oil, makes shutoff capsule and pressure-regulating valve be in depressurization phase, then utilizes supply propulsion system mobile observation system to next observation area, repeats step c, d, measure successively to boring.

The operating principle of above-mentioned hydraulic pressure converter is:

The cylinder piston area area that in hydraulic pressure converter, left end is larger is S left, contact hydraulic pressure is that the 4th probe unit leaks in pipe and observes boring hydraulic pressure P left, the cylinder piston area area that right-hand member is less is S right, contact hydraulic pressure is hydraulic pressure P in the 4th probe unit communicating pipe right, spring one Elastic coefficient k, decrement x, from balance between two forces principle:

Work as F left+ F bullet>=F right, i.e. P lefts left+ kx>=P rights right, then hydraulic pressure converter is in closed condition, and piston is outer to be moved, and water-guiding hole is stopped by matrix inwall, can not with leakage cross current.

Work as F left+ F bullet≤ F right, i.e. P lefts left+ kx≤P rights right, then hydraulic pressure converter is in opening, and piston outwards moves, and water-guiding hole exposes matrix inwall, with leakage cross current, carries out moisturizing in boring.

Said process both can realize by the 4th probe unit communicating pipe mesohigh water in the 4th probe unit leaks pipe, observe boring low-pressure water transform, in real time moisturizing process can be realized again in boring as required.

Wherein, P leftfor observing boring hydraulic pressure, engineering often gets 0.1MPa, P rightfor being communicated with inner pipe water pressure, can be used for swollen shutoff capsule on the one hand, on the other hand after pressure transforms, real-time moisturizing in can be used for leaking pipe to this survey section, engineering is often greater than 2.5MPa, it can thus be appreciated that, S leftbe about 25:1 with the ratio on the S right side, add spring adjusting range product moment value, one is to reduce left and right area ratio, and be convenient to actual manufacture needs, two is to make piston self-return.

As a preferred version of the present invention, two parallel passages are also provided with in described draw-in groove joint, be respectively passage I and passage II, the pipe that leaks of adjacent detector unit links together by described passage I, the communicating pipe of adjacent detector unit links together by described passage II, be provided with block in passage I between the second probe unit and the 3rd probe unit, the second probe unit and the 3rd probe unit separate by described block; Be provided with oil pipe road interface above described passage I, described oil pipe road interface is connected on described oil pipe road, and described swollen hole is arranged on below described passage II.

As another preferred version of the present invention, described passage I with leak between pipe, passage II is threaded with being between communicating pipe.

Preferably, described pressure-regulating valve comprises asymmetric piston group, spring two, is positioned at the oil through at top and is positioned at the square opening of sidepiece, and described oil through is connected with described oil pipe road.

Preferably, described supply propulsion system also comprises pressure of return water table, electronic logger, rig and drilling rod, and described electronic logger is arranged on water flood operations platform, and described pressure of return water table is used for carrying out correct detection to the pressure of return water in return pipe.

Preferably, described oil pipe road is fixed on each draw-in groove joint through holding screw.

The Advantageous Effects that the present invention brings:

Observation procedure of the present invention can simultaneously synchronously be measured two ends enemy, by water flood operations platform one and water flood operations platform two to detection system water filling simultaneously, independently detect I section and detection II section, achieve the correct synchro measure in two ends that section is surveyed in institute's shutoff, add measuring junction, improve measurement efficiency, be particularly useful for the Quick Measurement of mine roof and floor rock mass damage scope.

Play bulging by shutoff capsule and become shutoff space, native system achieves shutoff and to leak hunting integration.

The water source that water flood operations platform two provides is through entering in hydraulic pressure converter communicating pipe, piston in hydraulic pressure converter can control left end water-guiding hole and keep being communicated with or closing with the boring in wall-rock crack, thus achieve the pressure conversion to observation low pressure water source of blocking high-pressure water source in integrated process, ensure that in observation process, shutoff water source and observation water source are in respective pressure operation problem, avoid observation water source hypertonia to the destruction of borehole fissure.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention will be further described:

Fig. 1 is the structural representation of observation system of the present invention;

Fig. 2 is the overall schematic of test probe in observation system of the present invention;

Fig. 3-1,3-2,3-3 are pressure-regulating valve structural representation of the present invention;

Fig. 4-1,4-2 are hydraulic pressure converter structure schematic diagram;

Fig. 5-1,5-2,5-3,5-4 are hydraulic pressure converter and draw-in groove pipe joint structure schematic diagram;

Fig. 6 is hydraulic pressure switcher state schematic diagram;

Fig. 7 is oil pipe line structure schematic diagram in multistage shutoff both-end observation system;

Fig. 8 is the tubular structure schematic diagram that leaks;

Fig. 9 is communicating tube structure schematic diagram;

Figure 10 is draw-in groove joint one structural representation;

Figure 11 is draw-in groove joint two structural representation;

Figure 12 is draw-in groove joint three structural representation;

Figure 13 is draw-in groove joint four structural representation;

Figure 14 is draw-in groove joint five structural representation;

In figure, 1, rock mass, 2, boring, 3, draw-in groove joint one, 301, first probe unit, 302, second probe unit, 303, 3rd probe unit, 304, 4th probe unit, 4, draw-in groove joint two, 5, draw-in groove joint three, 6, draw-in groove joint four, 7, draw-in groove joint five, 8, hydraulic pressure converting system, 9, pressure-regulating valve, 10, shutoff capsule, 11, leak pipe, 12, communicating pipe, 13, oil pipe road, 14, draw-in groove union, 15, hydraulic pressure converter, 16, aperture, 17, piston, 18, matrix, 19, spring one, 20, boss, 21, limbers, 22, piston group, 23, square opening, 24, spring two, 25, oil through, 26, holding screw, 27, leaking hole, 28, water flood operations platform one, 29, water flood operations platform two, 30, rig, 31, drilling rod, 32, accumulator, 33, stop valve, 34, oil pressure tank, 35, oil pipe road interface, 36, play swollen hole.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is elaborated.

The present invention, the observation system that multistage shutoff both-end observation procedure adopts as shown in Figure 1, comprise observation system, plugging system and supply propulsion system, observation system is multistage observation, as shown in Figure 2, observation system is primarily of the first probe unit 301, second probe unit 302, 3rd probe unit 303 and the 4th probe unit 304 form, wherein, each probe unit has included the pipe 11 that leaks, communicating pipe 12, the head of the 4th probe unit 304 arranges draw-in groove joint 1, be connected by draw-in groove joint 24 between 4th probe unit 304 with the 3rd probe unit 303, be connected by draw-in groove joint 35 between 3rd probe unit 303 with the second probe unit 302, be connected by draw-in groove joint 46 between second probe unit 302 with the first probe unit 301, at the other end of the first probe unit 301, draw-in groove joint 57 is set.

Shown in composition graphs 2, Fig. 8 and Fig. 9, leak on pipe 11 and be provided with multiple leaking hole 27, for leaking to boring 2, observation hole wall fracture water flow, the first end of communicating pipe 12 is connected with water flood operations platform 2 29 by draw-in groove joint five, and the pipe that leaks of adjacent shutoff unit was all connected by draw-in groove joint with communicating pipe.

As in Figure 10-14, the structure chart of the present invention's five draw-in groove joints respectively, draw-in groove joint 1 is positioned on the right side of the 4th probe unit 304, there are two Central Symmetry pipelines, side is threaded with the pipe 11 that leaks, hydraulic pressure conversion valve 8, communicating pipe 12 respectively, in draw-in groove joint 1 communicating pipe 12 side below have swollen hole 36 together.

Draw-in groove joint 24 is between the 3rd probe unit 303 and the 4th probe unit 304, there are two Central Symmetry pipelines, respectively with the pipe 11 that leaks, pressure-regulating valve 9, communicating pipe 12 is threaded, leak in draw-in groove joint 24 top of pipe 11 side is fixed with right angle type oil pipe road interface 35, communicate with the oil through 25 on pressure-regulating valve 9, the sidewall of the other end and draw-in groove joint 24 is connected, oil pipe road interface 35 and oil pipe road 13 are threaded, interior logical hydraulic oil, in draw-in groove joint 24 communicating pipe 12 side below have swollen hole 36 together, oil pipe road is fixed on each draw-in groove joint through holding screw 26.

As Fig. 4-1, shown in 4-2, draw-in groove joint 35 is positioned at the second probe unit 302, between 3rd probe unit 303, there are two Central Symmetry pipelines, respectively with the pipe 11 that leaks, communicating pipe 12 is threaded, the mid portion be connected with the pipe 11 that leaks in draw-in groove joint 35 is not communicated with, for entity blockage structure, detection I section and detection II section can be divided into, leak in draw-in groove joint 35 top of pipe 11 side is fixed with an oil pipe road interface 35, the sidewall of interface 35 two ends, oil pipe road and draw-in groove joint 35 is connected, oil pipe road interface 35 and oil pipe road 13 are threaded, interior logical hydraulic oil, in draw-in groove joint 35 communicating pipe 35 side below have swollen hole 36 together.

Draw-in groove joint 46 is between the first probe unit 301, second probe unit 302, there are two Central Symmetry pipelines, be threaded with the pipe 11 that leaks, pressure-regulating valve 9, communicating pipe 12 respectively, leak in draw-in groove joint 46 top of pipe 11 side is fixed with one " T-shaped " oil pipe road, communicate with the oil through 25 on pressure-regulating valve 9, the sidewall of two ends, oil pipe road and draw-in groove joint 46 is connected, oil pipe road interface and oil pipe road are threaded, in logical hydraulic oil, in draw-in groove joint 46 communicating pipe 12 side below have swollen hole 36 together.

Draw-in groove joint 57 is positioned at the left end of the first probe unit 301, there are two Central Symmetry pipelines, be threaded with the pipe 11 that leaks, communicating pipe 12 respectively, leak in draw-in groove joint 57 top of pipe 11 side has the sidewall of an oil pipe road interface and draw-in groove joint 57 to be connected, oil pipe road interface and oil pipe road are threaded, in logical hydraulic oil, in draw-in groove joint 57 communicating pipe 12 side below have swollen hole 36 together.

Hydraulic pressure converting system 8 comprises hydraulic pressure converter 15 and draw-in groove union 14, and this hydraulic pressure converter is positioned at draw-in groove joint 1, and is threaded by draw-in groove union 14 and draw-in groove joint 1.Shown in composition graphs 3-1,3-2,3-3,4-1,4-2, hydraulic pressure converter 15 points of pistons 17 and matrix 18 two parts, piston 17 is in the anisometric cylinder in two ends, left and right, and cylinder piston 17 areas that left end is larger are S left, contact hydraulic pressure is P left, cylinder piston 17 areas that right-hand member is less are S right, contact hydraulic pressure is P right.There is a boss 20 to arrange near the right-hand member of piston 17, coordinated with the inner corresponding site of matrix 18 by spring 1, guarantee piston 17 unlikely disengaging matrix 18 while movement in matrix 18.

Be provided with the limbers 21 be interconnected in piston 17, right-hand member limbers 21 is connected with draw-in groove union 14 by aperture 16, by matrix 18 inner wall sealing when left end limbers 21 starts.When piston 17 stretch out left matrix 18 be greater than a certain position time, left end limbers 21 2 to be communicated with boring.

Opening pressure designed by hydraulic pressure converter 15, than being m, works as P left/ P rightduring≤m, hydraulic pressure converter 15 is in closed condition, works as P left/ P rightduring>=m, hydraulic pressure converter 15 is in opening.

The cylinder piston that in piston 17, right-hand member is less 17 areas are S rightcylinder piston 17 areas larger with left end are S leftarea ratio S right/ S leftcan the opening pressure designed by hydraulic pressure converter 15 design than m.

Hydraulic pressure converter 15 operating principle is:

As shown in Figure 6, cylinder piston 17 areas that in hydraulic pressure converter 15, left end is larger are S left, contact hydraulic pressure is that the 4th probe unit 304 leaks in pipe 11 and observes boring 2 hydraulic pressure P left, cylinder piston 17 areas that right-hand member is less are S right, contact hydraulic pressure is hydraulic pressure P in the 4th probe unit 304 communicating pipe 12 right, spring 1 Elastic coefficient k, decrement x, from balance between two forces principle:

Work as F left+ F bullet>=F right, i.e. P lefts left+ kx>=P rights right, then hydraulic pressure converter 15 is in closed condition, and piston 17 is not outer to be moved, and limbers 21 is stopped by matrix 18 inwall, can not be communicated with the pipe 11 that leaks.

Work as F left+ F bullet≤ F right, i.e. P lefts left+ kx≤P rights right, then hydraulic pressure converter 15 is in opening, and piston 17 outwards moves, and matrix 18 inwall is exposed in limbers 21, and pipe 11 is communicated with leaking, and carries out moisturizing in boring 2.

Said process both can realize by the 4th probe unit 304 communicating pipe 12 mesohigh water in the 4th probe unit 304 leaks pipe 11, observe boring 2 low-pressure water transform, real-time moisturizing process in boring 2 can be realized again as required.

Wherein, P leftfor observation boring 2 hydraulic pressure, engineering often gets 0.1MPa, P rightfor 12 hydraulic pressure in communicating pipe, can be used for swollen shutoff capsule 10 on the one hand, on the other hand after pressure transforms, real-time moisturizing in can be used for leaking pipe 11 to this survey section, engineering is often greater than 2.5MPa, it can thus be appreciated that, S leftbe about 25:1 with the ratio on the S right side, consider that area difference is too large, therefore add spring 1 and regulate, one is to reduce left and right area ratio, is convenient to actual manufacture needs, and two is to make piston 17 self-return.

Shown in composition graphs 5-1 to 5-4, pressure-regulating valve 9 is positioned at draw-in groove joint 24, draw-in groove joint 46, pressure-regulating valve 9 weeks ends arrange screw thread, be connected with draw-in groove joint 24, draw-in groove joint 46 by screw thread, it is several that force regulating valve 9 two side ends has symmetrical square opening 23, Zhou Duan has a screw-type oil through 25.

Described pressure-regulating valve 9 comprises asymmetric piston group 22 and spring 2 24, during original state, under spring 2 24 acts on, asymmetric piston group 22 is positioned at one end of pressure-regulating valve 9 inner chamber, now lucky shutoff pressure-regulating valve 9 side square opening 23 completely, during duty, hydraulic oil enters pressure-regulating valve 9 inner chamber by oil through 25, act on piston group 22 side, piston group 22 is pushed to spring 2 24 end, now, piston group 22 spaces are by chance communicated with square opening 23, and current are by pressure-regulating valve 9.

Plugging system refers to shown in Fig. 1 to Fig. 2, Fig. 6 to Figure 14, mainly comprise shutoff capsule 10, shutoff capsule 10 surrounds on draw-in groove joint 1, draw-in groove joint 24, draw-in groove joint 35, draw-in groove joint 46 and draw-in groove joint 57 respectively, sealed fixing by fixed component, link up with external source by playing swollen hole 36, two ends, oil pipe road arrange holding screw 26, oil pipe road can be fixed on the oil pipe between each draw-in groove joint, oil pipe road is connected with oil gear, and its inside is connected with hydraulic oil.

Oil gear comprises oil pressure tank 34, stop valve 33 and accumulator 32, oil pressure tank 34 is responsible for providing the hydraulic oil making piston group 22 movement in pressure-regulating valve 9, stop valve 33 is responsible for circulation and the cut-off of hydraulic oil, accumulator 32 is by coordinating with stop valve 33, ensure that stop valve 33 is in when state, ensure that the hydraulic oil in oil pipe 35 and capsule tube connector 13 keeps certain process stage.

Supply propulsion system in detail as shown in Figure 1, comprise water flood operations platform 1, water flood operations platform 2 29, drilling rod 31, rig 30, pressure of return water table and electronic logger etc., water flood operations platform 1 is responsible for the first probe unit 301, second probe unit 302 provides pressure water source, source pressure is 0.1MPa, water flood operations platform 2 29 is responsible for the 3rd probe unit 303, 4th probe unit 304, shutoff capsule 10 provides pressure water source, pressure water source is 2.5MPa, on the one hand, after pressure changeover valve 9 is changed, with the hydraulic pressure of 0.1MPa to the 3rd probe unit 303, 4th probe unit 304 supplies water, on the other hand, swollen hole 36 has been passed through with the pressure water source of 2.5MPa, play swollen shutoff capsule 10.

The course of work of observation system of the present invention is:

Step 1, hydraulic pressure converter 15 opening pressure ratio in draw-in groove joint 1 is set is respectively m=2.5, get observation hydraulic pressure P leftfor 0.1MPa;

Step 2, water flood operations platform 2 29 provide 2.5MPa water under high pressure by communicating pipe 12, on the one hand, this water under high pressure has passed through the swollen shutoff capsule 10 in 36, swollen hole, on the other hand, this water under high pressure by hydraulic pressure converter 15 change after with 0.1MPa to water filling in the 4th probe unit 304, observation; Keep hydraulic pressure, after 1-2 minute, read and calculate average wastage L in this time period 1, correspondingly, water flood operations platform 1, directly provides 0.1MPa to observe water source in the first probe unit 301, and correspondence reads and calculates average wastage L in this time period 2;

After step 3, said process, oil pressure tank 34 provides the hydraulic oil of certain pressure in pressure-regulating valve 9 by associated conduit, piston group 22 is moved to the other end, and square opening 23 is communicated with.Now, first probe unit 301 is communicated with the second probe unit 302,4th probe unit 304 is communicated with the 3rd probe unit 303, open stop valve 33 and accumulator 32, keep hydraulic oil pressure, observation water source is supplemented respectively in the second probe unit 302, the 3rd probe unit 301, and works on 0.1MPa pressure, wait for 1-2 minute, read respectively and calculate first and second probe unit 301,302 and the average wastage L of third and fourth probe unit 303,304 3, L 4, now, L 3-L 2be the average wastage of the second probe unit 302, L 4-L 1be the flat 303 equal wastages of the 3rd probe unit;

Step 4, by pressure-regulating valve 9 and shutoff capsule 10 pressure release, with rig 30 and drilling rod 31, observation system is pushed into next observation area and observes, until all observation is complete in boring 2 length.

The observation procedure of observation system of the present invention, specifically comprises the following steps:

(1) drilling 2: with conventional coal mine drilling machine 30 in coal petrography tunnel in top board or floor rock 1 successively construction predetermined angular hole 2 several, hole depth 30-70m is not etc.;

(2) observation system is installed: the foreign material in cleaning boring, observation system is installed, connects rig 30, water flood operations platform 1, water flood operations platform 2 29 etc. by corresponding pipeline, and utilize rig 30 and drilling rod 31 to be sent to boring 2 initial position;

(3) close boring 2: arrive after initial position until it, play swollen shutoff capsule 10 and seal boring 2, namely in observation system, inject water source with water flood operations platform 28,29 and reach predetermined initial water pressure to it;

(4) measure flowing water vector parameters: after shutoff is qualified, carry out flowing water vector parameters mensuration, read respectively and calculate the average wastage L of the first probe unit 301, second probe unit 302, the 3rd probe unit 303, the 4th probe unit 304 2, L 3-L 2, L 4-L 1, L 1.Withdraw pressure water source and hydraulic oil, make shutoff capsule 10 and pressure-regulating valve 9 be in depressurization phase, then utilize rig 30 and drilling rod 31 mobile observation system to next observation area, repeat step 3 to step 4, successively boring 2 is measured.

The part do not addressed in the present invention adopts or uses for reference prior art and can realize.

Claims (6)

1., for a shutoff both-end observation procedure for wall-rock crack, its observation system adopted comprises detection system, plugging system and supply propulsion system, and described detection system is arranged in the boring of wall-rock crack, it is characterized in that:
Described detection system comprises the first probe unit, the second probe unit, the 3rd probe unit, the 4th probe unit, pressure-regulating valve, draw-in groove joint and U-shaped pipeline, described first probe unit is positioned at the outermost of boring, described 4th probe unit is positioned at the inner side of boring, described draw-in groove joint is arranged between adjacent probe unit, the afterbody of the front portion of the first probe unit and the 4th probe unit, each probe unit includes the communicating pipe and the pipe that leaks that are arranged in parallel, in each draw-in groove joint, be provided with swollen hole;
The draw-in groove joint of the 4th probe unit afterbody is provided with hydraulic pressure converting system, described hydraulic pressure converting system comprises hydraulic pressure converter and draw-in groove union, described hydraulic pressure converter comprises piston and matrix two parts, described piston left side area is greater than right side area, the water-guiding hole be interconnected is provided with in described piston, the water-guiding hole being positioned at right-hand member is connected with described draw-in groove joint by aperture, by matrix inner wall sealing when the water-guiding hole being positioned at left end starts, the right-hand member of piston is provided with boss, described boss is used for carrying out spacing to the spring one in piston, described piston keeps being communicated with or closing in order to control left end water-guiding hole and the boring in wall-rock crack,
Described plugging system comprises shutoff capsule, and described shutoff capsule surrounds the outside of each draw-in groove joint, has been provided with swollen hole in described draw-in groove joint;
Described supply propulsion system comprises water flood operations platform one, water flood operations platform two and oil gear, and above each probe unit leaks pipe, be provided with oil pipe road, described oil gear comprises oil pressure tank, accumulator and stop valve;
Described observation procedure comprises the following steps:
A drilling, multiple borings of predetermined angular of successively constructing in top board or floor rock in coal petrography tunnel, hole depth 30-70m;
B installs observation system, successively the communicating pipe of the first probe unit, the second probe unit, the 3rd probe unit and the 4th probe unit and the pipe that leaks are linked together by draw-in groove joint, the communicating pipe of adjacent detector unit is made to keep being communicated with, be positioned at the first probe unit to keep being communicated with the pipe that leaks of the 4th probe unit with the second probe unit, the 3rd probe unit, the pipe that leaks between the second probe unit and the 3rd probe unit is divided into independently two parts by draw-in groove joint, is respectively detection I section and detection II section;
Setting pressure control valve in draw-in groove joint between the first probe unit and the second probe unit, between the 3rd probe unit and the 4th probe unit, one end that 4th probe unit stretches into boring connects U-shaped pipeline, hydraulic pressure converting system is arranged on the draw-in groove joint of the 4th probe unit afterbody;
Shutoff capsule is surrounded the outside of each draw-in groove joint, be connected with detection I section by water flood operations platform one, water flood operations platform two was connected with communicating pipe, was connected on oil pipe road with oil gear;
C closes boring, arrives after initial position until it, injects water source reach predetermined initial water pressure to play swollen shutoff capsule to it with water flood operations platform one and water flood operations platform two in observation system;
D measures flowing water vector parameters, comprises following sub-step:
(1) arranging hydraulic pressure converter opening pressure is 2.5 than m, gets observation hydraulic pressure P leftfor 0.1MPa;
(2) within communicating pipe, injecting 2.5MPa water source by water flood operations platform two, on the one hand playing swollen shutoff capsule by playing a swollen hole, on the other hand, this water source by after the conversion of hydraulic pressure converter with 0.1MPa to water filling in the 4th probe unit, observe; Keep hydraulic pressure after 1-2 minute, read and calculate average wastage L in this time period 1; Meanwhile, directly provide 0.1MPa to observe water source by water flood operations platform one in the first probe unit, correspondence reads and calculates average wastage L in this time period 2;
(3) step (2) is connect, the hydraulic oil of certain pressure is provided in pressure-regulating valve by oil gear, piston group is moved to the other end makes square opening be communicated with, now, first probe unit is communicated with the second probe unit, 4th probe unit is communicated with the 3rd probe unit, open stop valve and accumulator, keep hydraulic oil pressure, make observation water source respectively to the second probe unit, supplement in 3rd probe unit, and work on 0.1MPa pressure, wait for 1-2 minute, read respectively and calculate first, two probe units and the 3rd, the average wastage L of four probe units 3, L 4, now, L 3-L 2be the average wastage of the second probe unit, L 4-L 1be the average wastage of the 3rd probe unit,
E withdraws pressure water source and hydraulic oil, makes shutoff capsule and pressure-regulating valve be in depressurization phase, then utilizes supply propulsion system mobile observation system to next observation area, repeats step c, d, measure successively to boring.
2. the shutoff both-end observation procedure for wall-rock crack according to claim 1, it is characterized in that: in described draw-in groove joint, be also provided with two parallel passages, be respectively passage I and passage II, the pipe that leaks of adjacent detector unit links together by described passage I, the communicating pipe of adjacent detector unit links together by described passage II, be provided with block in passage I between the second probe unit and the 3rd probe unit, the second probe unit and the 3rd probe unit separate by described block; Be provided with oil pipe road interface above described passage I, described oil pipe road interface is connected on described oil pipe road, and described swollen hole is arranged on below described passage II.
3. the shutoff both-end observation procedure for wall-rock crack according to claim 1, is characterized in that: described passage I with leak between pipe, passage II is threaded with being between communicating pipe.
4. the shutoff both-end observation procedure for wall-rock crack according to claim 1, it is characterized in that: described pressure-regulating valve comprises asymmetric piston group, spring two, is positioned at the oil through at top and is positioned at the square opening of sidepiece, and described oil through is connected with described oil pipe road.
5. the shutoff both-end observation procedure for wall-rock crack according to claim 1, it is characterized in that: described supply propulsion system also comprises pressure of return water table, electronic logger, rig and drilling rod, described electronic logger is arranged on water flood operations platform, and described pressure of return water table is used for carrying out correct detection to the pressure of return water in return pipe.
6. the shutoff both-end observation procedure for wall-rock crack according to claim 1, is characterized in that: described oil pipe road is fixed on each draw-in groove joint through holding screw.
CN201510903125.XA 2015-12-09 2015-12-09 Multistage blocks both-end observation procedure CN105525910B (en)

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CN108613909A (en) * 2018-04-20 2018-10-02 大连理工大学 Rock-mass relaxing circle test method based on fields water injection effect
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CN108645774A (en) * 2018-04-20 2018-10-12 大连理工大学 A kind of single loop overlying strata crack double-end sealing leak detection system
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CN108444889A (en) * 2018-04-20 2018-08-24 大连理工大学 Become pressure adjustable rock cranny testing permeability device
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