CN105758561B - Based on the uniform water pressure supporing device and method of visualization - Google Patents

Based on the uniform water pressure supporing device and method of visualization Download PDF

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Publication number
CN105758561B
CN105758561B CN201610208284.2A CN201610208284A CN105758561B CN 105758561 B CN105758561 B CN 105758561B CN 201610208284 A CN201610208284 A CN 201610208284A CN 105758561 B CN105758561 B CN 105758561B
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China
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pressure
stress
rock
flexible pipe
hydrofracturing
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CN201610208284.2A
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CN105758561A (en
Inventor
张少华
程亮
刘伟
张明磊
刘建
郭文豪
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00Measuring force or stress, in general
    • G01L1/02Measuring force or stress, in general by hydraulic or pneumatic means

Abstract

One kind belongs to base stress measurement device and method based on uniform water pressure supporing device and method is visualized.Step:1st, test crustal stress country rock is chosen;2nd, construction drill, using related rig to coal and rock construction drill;3rd, equipment is installed, and hydrofracturing and monitoring device are lifted into country rock detecting earth stress section and fixation using hydraulic lifting apparatus;4th, fluid injection pressurization carries out water filling pressurization by pressurized hoses using flame proof high-pressure pump to collar flexible pipe, realizes indirect hydrofracturing geodetic stress, opens pressure sensor and recording instrument, monitor stress change and surrouding rock deformation;5th, pump is closed, when collar flexible pipe is persistently to country rock pressurization until wall-rock crack instant of complete cracking closes high-pressure pump;6th, release, when the pressure in detecting earth stress section tends to be steady, the pressure in this test section is released;7th, above-mentioned 4,5,6 three steps 3 of repetition 5 times, obtain stress parameter, judge the rupture of rock and the extension state in crack, and processing data.

Description

Based on the uniform water pressure supporing device and method of visualization
Technical field
It is particularly a kind of based on visualizing uniform hydrofracturing the present invention relates to a kind of geostress survey device and method Stress measurement device and method.
Background technology
Crustal stress is present in the earth's crust not by the natural stress of Engineering Disturbance, it to underground engineering tunnel surrouding rock deformation and Tool is destroyed to have a certain impact.According to different measuring principles and corresponding measuring apparatus, there is different detecting earth stress sides Method.The method of measurement crustal stress has much at present, wherein it is stress relief method and hydraulic fracturing to apply wider.Stress relieving Method is of a relatively high to the integrity demands of rock mass, and the integrality of core is difficult to ensure that for broken rock mass, and success rate is low, test Method is complicated, cost is high;And although traditional hydraulic fracturing has that simple to operate, palisades field of load is wide, it is big to fathom The advantages that, but there is also many problems, for example, the 1, lithology to country rock requires higher, it is not suitable for the rock mass of weak broken, 2, Emphasize the integrality of country rock, it is desirable to selected test section is intact rock section, the development of no initial fissure, 3, measure the process of crustal stress Middle information gathering is single, the stressing conditions that traditional hydraulic fracturing can only be during collecting test, and can not be to hydrofracturing Caused by the situation of change of wall-rock crack monitored in real time.
The content of the invention
Technical problem:The purpose of the present invention is to overcome the shortcomings of existing earth stress measuring method, there is provided it is a kind of it is simple in construction, It is easy to operate, be suitable for complex surrounding rock geological conditions based on visualizing uniform water pressure supporing device and method, Can solve the problems, such as that traditional water pressure supporing device is limited by weak-fracture zone and initial fissure development rock mass.
Technical scheme:To achieve the above object, the present invention is included based on the uniform water pressure supporing dress of visualization Put and measuring method;
The uniform water pressure supporing device of described visualization includes:Flame proof high-pressure pump, accumulator, high-voltage tube Road, static pressure water inlet pipe, pressure gauge, pressure sensor, data acquisition recorder, pressurized hoses, hydraulic lifting apparatus, hydrofracturing And monitoring device;The input of flame proof high-pressure pump and accumulator is connected, and the output end of accumulator is carried by pressure duct and hydraulic pressure Device connection is risen, there is static pressure water inlet pipe, pressure gauge, pressure sensor and pressurized hoses on pressure duct;Pressure sensor leads to Data line is crossed to be connected with data acquisition recorder;The front end of hydraulic lifting apparatus is connected with hydrofracturing and monitoring device.
Described hydraulic lifting apparatus includes hydraulic cylinder, piston rod and fixed tray;One end of piston rod is located at hydraulic cylinder Interior, the other end of piston rod is connected with fixed tray, and hydrofracturing and monitoring device are connected on fixed tray.
Described hydrofracturing and monitoring device include high intensity ring pipe, neck, collar flexible pipe, interior sealing disk, outer close Closing disk, recording instrument firm banking, recording instrument, data line, pressurized hoses and bolt;In being connected with high intensity ring pipe Seal disc and external seal disk, there is collar flexible pipe outside high intensity ring pipe, interior sealing disk and external seal are extended on collar flexible pipe Between disk, connected in the collar flexible pipe between interior sealing disk and external seal disk by neck;Recording instrument is equipped with centre bit Firm banking, data line is connected with recording instrument firm banking;Recording instrument have it is multiple, with multi-angle it is multi-faceted be arranged on clap Take the photograph on instrument firm banking.
Utilize the measuring method for visualizing uniform water pressure supporing measurement device crustal stress:Pressurizeed by water filling The collar flexible pipe of hydrofracturing and monitoring device outer surface is expanded, extruding is produced to country rock, country rock is produced crack, it is real Existing hydrofracturing geodetic stress;In the process, by the recording instrument in high intensity ring pipe to detecting earth stress during Wall-rock crack change is monitored in real time, realizes visualization by collar flexible pipe mediate contact country rock hydrofracturing geodetic stress;
Comprise the following steps that:
(1), more complete country rock body is selected to measure;
(2), construction drill, boring requirement are:1. construction drill diameter should ensure crustal stress in the range of 75mm-100mm Measurement apparatus matches with drilling country rock, and 2. drillable length should reach 3-5 times of tunnel radius, and guarantee institute geodetic stress is protolith 3. stress drills should try one's best to top board construction, in favor of the extension in crack;
(3), equipment is installed, and first opens static pressure water inlet pipe, static pressure water is entered in accumulator;Flame proof high-pressure pump is opened again, Promote the piston rod and fixed tray of hydraulic lifting apparatus by hydraulic cylinder fluid injection pressurization of the high-pressure pump to hydraulic lifting apparatus The hydrofracturing visualized in uniform water pressure supporing device and monitoring device are lifted to country rock detecting earth stress Section is simultaneously fixed, afterwards, closes the hydraulic valve and flame proof high-pressure pump of hydraulic cylinder;
(4), fluid injection is pressurizeed, and reopens flame proof high-pressure pump, soft by pressure duct and supercharging using flame proof high-pressure pump Pipe carries out water filling pressurization to collar flexible pipe and monitors pump station pressure situation in real time by pressure gauge to ensure to collar flexible pipe voltage supply It is sufficient;Flame proof high-pressure pump is constantly pressurized, and collar flexible pipe constantly expands, and thus applies pressure to drilling country rock detecting earth stress section; Now, country rock is drilled in the presence of the continuous expandable pressurized of collar flexible pipe, causes country rock to produce crack, meanwhile, open pressure and pass Sensor and recording instrument, start to monitor the variation in water pressure during detecting earth stress and wall-rock crack development in real time, and will The data of collection are transferred to data acquisition recorder by data line;
(5) pump, is closed, when collar flexible pipe is persistently to country rock pressurization up to wall-rock crack instant of complete cracking, records critical pressure Force value, meanwhile, high-pressure pump is closed, stops pressurizeing to collar flexible pipe;Slowly decline with the pressure of test section, record country rock and split Pressure value during the critical closure of gap;
(6), release, when the pressure in detecting earth stress section tends to be steady or during there is no being decreased obviously, you can connection is big Gas, the crack for promoting to have opened close completely, that is, release the pressure in this test section;
(7) above-mentioned (4), (5), (6) three steps 3-5 times, are repeated, multigroup stress parameter is obtained, to accurate judgement rock The rupture of stone and the extension state in crack;After the completion of test, recording instrument is closed;And the data for recording data acquisition recorder Comprehensive analysis is carried out with video, the relevant parameter of crustal stress is drawn according to hydrofracturing.
Beneficial effect, as a result of such scheme, the present invention is a kind of to be surveyed based on the uniform hydrofracturing crustal stress of visualization Amount device and method can realize the visualization of geostress survey, improve the precision of geostress survey, expanded hydrofracturing The scope of application of geodetic stress.It is different from the device of traditional hydrofracturing geodetic stress, the dress of traditional hydrofracturing geodetic stress It is to realize the purpose of measurement crustal stress by directly being pressurizeed to country rock water filling to put, but the present invention is using between collar flexible pipe water filling Connect and geostress survey is carried out to the method for country rock pressure, which greatly enhances the scope of application of hydrofracturing geodetic stress, solves Traditional water pressure supporing device is limited by the problem of weak-fracture zone and initial fissure development rock mass, also, Due to the method using indirect hydrofracturing, influence of the rock lithology to measurement result is avoided, improves hydrofracturing geodetic The precision of stress.Meanwhile a kind of uniform water pressure supporing device and method of visualization that is based on of the present invention is using saturating The splendid material of lightness is made, and the recording instrument of Multi-orientation multi-angle is provided with inside measurement apparatus, can be to hydrofracturing mistake The distribution situation of wall-rock crack and developmental state carry out monitoring shooting, and the related data of collection can be transferred into number in real time in journey According to related scientific research personnel comprehensive analysis geostress survey value in the future in acquisition and recording instrument, is easy to, geostress survey is favorably improved As a result the degree of accuracy, the visualization of geostress survey and the diversification of information gathering are realized.
Advantage:(1) relatively low are required to enclosing lithologies and integrated degree, it is applied widely;
(2) captured in real-time can be carried out to hydrofracturing process, realizes the visualization of hydrofracturing geodetic stress, measurement is adopted Collect information diversification;
(3) measurement result precision improves, analysis result more diversification.
Brief description of the drawings
Fig. 1 is the schematic diagram of the uniform water pressure supporing device of visualization of the present invention.
Fig. 2 is the hydrofracturing of the present invention and the schematic diagram of monitoring device.
In figure:1st, flame proof high-pressure pump;2nd, accumulator;3rd, pressure duct;4th, static pressure water inlet pipe;5th, pressure gauge;6th, pressure passes Sensor;7th, data acquisition recorder;8th, hydraulic cylinder;9th, piston rod;10th, fixed tray;11st, data line;12nd, hydrofracturing And monitoring device;13rd, top plate and rock fracture section;14th, bottom plate;15th, pressurized hoses;16th, high intensity ring pipe;17th, neck; 18th, collar flexible pipe;19th, interior sealing disk;20th, external seal disk;21st, bolt;22nd, recording instrument firm banking.
Embodiment
The present invention is included based on the uniform water pressure supporing device of visualization and measuring method;
The uniform water pressure supporing device of described visualization includes:Flame proof high-pressure pump 1, accumulator 2, high-voltage tube Road 3, static pressure water inlet pipe 4, pressure gauge 5, pressure sensor 6, data acquisition recorder 7, pressurized hoses 15, hydraulic lifting apparatus, Hydrofracturing and monitoring device 12;Flame proof high-pressure pump 1 is connected with the input of accumulator 2, and the output end of accumulator 2 passes through high pressure Pipeline 3 is connected with hydraulic lifting apparatus, there is static pressure water inlet pipe 4, pressure gauge 5, pressure sensor 6 and supercharging on pressure duct 3 Flexible pipe 15;Pressure sensor 6 is connected by data line 11 with data acquisition recorder 7;The front end of hydraulic lifting apparatus with Hydrofracturing and monitoring device 12 connect.
Described hydraulic lifting apparatus includes hydraulic cylinder 8, piston rod 9 and fixed tray 10;One end of piston rod 9 is located at liquid In cylinder pressure 8, the other end of piston rod 9 is connected with fixed tray 10, and hydrofracturing and monitoring device are connected on fixed tray 10 12。
Described hydrofracturing and monitoring device 12 include high intensity ring pipe 16, neck 17, collar flexible pipe 18, interior sealing Disk 19, external seal disk 20, recording instrument firm banking 22, recording instrument, data line 11, pressurized hoses 15 and bolt 21;In height Interior sealing disk 19 and external seal disk 20 are connected with intensity ring pipe 16, there is collar flexible pipe 18 outside high intensity ring pipe 16, is covered Extended on ring flexible pipe 18 between interior sealing disk 19 and external seal disk 20, between interior sealing disk 19 and external seal disk 20 Collar flexible pipe 18 is connected by neck 17;Recording instrument firm banking 22, the 22 times connections of recording instrument firm banking are equipped with centre bit There is data line 11;Recording instrument have it is multiple, with multi-angle it is multi-faceted be arranged on recording instrument firm banking 22 on.
Utilize the measuring method for visualizing uniform water pressure supporing measurement device crustal stress:Pressurizeed by water filling The collar flexible pipe of hydrofracturing and monitoring device outer surface is expanded, extruding is produced to country rock, country rock is produced crack, it is real Existing hydrofracturing geodetic stress;In the process, by the recording instrument in high intensity ring pipe to detecting earth stress during Wall-rock crack change is monitored in real time, realizes visualization by collar flexible pipe mediate contact country rock hydrofracturing geodetic stress;
Comprise the following steps that:
(1), more complete country rock body is selected to measure;
(2), construction drill, boring requirement are:1. construction drill diameter should ensure crustal stress in the range of 75mm-100mm Measurement apparatus matches with drilling country rock, and 2. drillable length should reach 3-5 times of tunnel radius, and guarantee institute geodetic stress is protolith 3. stress drills should try one's best to top board construction, in favor of the extension in crack;
(3), equipment is installed, and first opens static pressure water inlet pipe, static pressure water is entered in accumulator;Flame proof high-pressure pump is opened again, Promote the piston rod and fixed tray of hydraulic lifting apparatus by hydraulic cylinder fluid injection pressurization of the high-pressure pump to hydraulic lifting apparatus The hydrofracturing visualized in uniform water pressure supporing device and monitoring device are lifted to country rock detecting earth stress Section is simultaneously fixed, afterwards, closes the hydraulic valve and flame proof high-pressure pump of hydraulic cylinder;
(4), fluid injection is pressurizeed, and reopens flame proof high-pressure pump, soft by pressure duct and supercharging using flame proof high-pressure pump Pipe carries out water filling pressurization to collar flexible pipe and monitors pump station pressure situation in real time by pressure gauge to ensure to collar flexible pipe voltage supply It is sufficient;Flame proof high-pressure pump is constantly pressurized, and collar flexible pipe constantly expands, and thus applies pressure to drilling country rock detecting earth stress section; Now, country rock is drilled in the presence of the continuous expandable pressurized of collar flexible pipe, causes country rock to produce crack, meanwhile, open pressure and pass Sensor and recording instrument, start to monitor the variation in water pressure during detecting earth stress and wall-rock crack development in real time, and will The data of collection are transferred to data acquisition recorder by data line;
(5) pump, is closed, when collar flexible pipe is persistently to country rock pressurization up to wall-rock crack instant of complete cracking, records critical pressure Force value, meanwhile, high-pressure pump is closed, stops pressurizeing to collar flexible pipe;Slowly decline with the pressure of test section, record country rock and split Pressure value during the critical closure of gap;
(6), release, when the pressure in detecting earth stress section tends to be steady or during there is no being decreased obviously, you can connection is big Gas, the crack for promoting to have opened close completely, that is, release the pressure in this test section;
(7) above-mentioned (4), (5), (6) three steps 3-5 times, are repeated, multigroup stress parameter is obtained, to accurate judgement rock The rupture of stone and the extension state in crack;After the completion of test, recording instrument is closed;And the data for recording data acquisition recorder Comprehensive analysis is carried out with video, the relevant parameter of crustal stress is drawn according to hydrofracturing.
Embodiment 1:The present invention is a kind of based on the detecting earth stress side for visualizing uniform water pressure supporing device Method is made up of following steps:
1st, more complete country rock body is selected to measure;
2nd, construction drill, boring requirement are:1. construction drill diameter should ensure that crustal stress is surveyed in the range of 75mm-100mm Amount device matches with drilling country rock, and 2. drillable length should reach 3-5 times of tunnel radius, and guarantee institute's geodetic stress is answered for protolith 3. power drills should try one's best to top board construction, in favor of the extension in crack;
3rd, equipment is installed, and first opens static pressure water inlet pipe (4), static pressure water is entered in accumulator (2).Afterwards, flame proof is opened High-pressure pump (1), promote the work of hydraulic lifting apparatus by hydraulic cylinder (8) fluid injection pressurization of the high-pressure pump (1) to hydraulic lifting apparatus Stopper rod (9) and fixed tray (10) fill the hydrofracturing visualized in uniform water pressure supporing device and monitoring Put (12) and be lifted to country rock detecting earth stress section and fixation, afterwards, close the hydraulic valve and flame proof high-pressure pump (1) of hydraulic cylinder (8);
4th, fluid injection is pressurizeed, and reopens flame proof high-pressure pump (1), using flame proof high-pressure pump (1) by pressure duct (3) and Pressurized hoses (15) carry out water filling pressurization to collar flexible pipe (16) and monitor pump station pressure situation in real time by pressure gauge (5) to protect Demonstrate,prove sufficient to collar flexible pipe (16) voltage supply.Due to the continuous supercharging of flame proof high-pressure pump (1), expand collar flexible pipe (16), So as to apply pressure to drilling country rock detecting earth stress section, now, drilling country rock can be due to the continuous expansion of collar flexible pipe (16) Pressurize and cause country rock to produce crack, meanwhile, pressure sensor (6) and recording instrument are opened, is started to during detecting earth stress Variation in water pressure and wall-rock crack development monitored in real time, and the data of collection are transferred to number by data line (11) According to acquisition and recording instrument (7);
5th, pump is closed, when collar flexible pipe (16) is persistently to country rock pressurization until wall-rock crack instant of complete cracking, records critical pressure Force value, meanwhile, high-pressure pump (1) is closed, stops pressurizeing to collar flexible pipe (16).Slowly decline with the pressure of test section, record Pressure value during the critical closure of lower wall-rock crack;
6th, release, when the pressure in detecting earth stress section tends to be steady or during there is no being decreased obviously, you can connection air, The crack for promoting to have opened closes completely, that is, releases the pressure in this test section;
7th, repetition above-mentioned 4,5,6 three steps 3-5 times, to obtain the broken of rational stress parameter and accurate judgement rock Split the extension state with crack.After the completion of test, recording instrument is closed.And the data for recording data acquisition recorder (7) and Video carries out comprehensive analysis, and the relevant parameter of crustal stress is drawn according to the principle of hydrofracturing.

Claims (2)

1. one kind is based on visualizing uniform water pressure supporing device, it is characterized in that:The measurement apparatus includes:Flame proof is high Press pump, accumulator, static pressure water inlet pipe, pressure duct, pressure sensor, data acquisition recorder, pressure gauge, pressurized hoses, liquid Press lifting device, hydrofracturing and monitoring device;The input of flame proof high-pressure pump and accumulator is connected, and the output end of accumulator is led to Cross pressure duct to be connected with hydraulic lifting apparatus, there is static pressure water inlet pipe, pressure gauge, pressure sensor and supercharging on pressure duct Flexible pipe;Pressure sensor is connected by data line with data acquisition recorder;The front end of hydraulic lifting apparatus causes with hydraulic pressure Split and monitoring device connects;
Described hydraulic lifting apparatus includes hydraulic cylinder, piston rod and fixed tray;One end of piston rod is located in hydraulic cylinder, living The other end of stopper rod is connected with fixed tray, and hydrofracturing and monitoring device are connected on fixed tray;
Described hydrofracturing and monitoring device include high intensity ring pipe, neck, collar flexible pipe, interior sealing disk, external seal disk, Recording instrument firm banking, recording instrument, data line, pressurized hoses and bolt;Interior sealing is connected with high intensity ring pipe Disk and external seal disk, there is collar flexible pipe outside high intensity ring pipe, extended on the collar flexible pipe interior sealing disk and external seal disk it Between, connected in the collar flexible pipe between interior sealing disk and external seal disk by neck;Recording instrument is equipped with centre bit to fix Base, data line is connected with recording instrument firm banking;Recording instrument has multiple, and recording instrument is arranged on so that multi-angle is multi-faceted On firm banking.
2. the detecting earth stress method based on the uniform water pressure supporing device of visualization described in claim 1, its It is characterized in:Measuring method expands the collar flexible pipe of hydrofracturing and monitoring device outer surface by water filling pressurization, to enclosing Rock produces extruding, country rock is produced crack, realizes hydrofracturing geodetic stress;In the process, by high intensity ring pipe Recording instrument to during detecting earth stress wall-rock crack change monitored in real time, realize visualize it is indirect by collar flexible pipe Contact country rock hydrofracturing geodetic stress;
Comprise the following steps that:
(1), the more complete country rock body of selection measures;
(2), construction drill, boring requirement is:1. construction drill diameter should ensure geostress survey in the range of 75mm-100mm Device matches with drilling country rock, and 2. drillable length should reach 3-5 times of tunnel radius, and guarantee institute geodetic stress is the stress of primary rock 3. drilling should try one's best to top board construction, in favor of the extension in crack;
(3), equipment installation, first open static pressure water inlet pipe, make static pressure water enter accumulator in;Flame proof high-pressure pump is opened again, is passed through Hydraulic cylinder fluid injection pressurization of the high-pressure pump to hydraulic lifting apparatus promotes the piston rod of hydraulic lifting apparatus and fixed tray can Country rock detecting earth stress section is lifted to depending on the hydrofracturing in the uniform water pressure supporing device of change and monitoring device simultaneously It is fixed, afterwards, close the hydraulic valve and flame proof high-pressure pump of hydraulic cylinder;
(4), fluid injection pressurization, reopen flame proof high-pressure pump, pass through pressure duct and pressurized hoses pair using flame proof high-pressure pump Collar flexible pipe carries out water filling pressurization and monitors pump station pressure situation in real time by pressure gauge to ensure to collar flexible pipe voltage supply abundance; Flame proof high-pressure pump is constantly pressurized, and collar flexible pipe constantly expands, and thus applies pressure to drilling country rock detecting earth stress section;Now, Drill country rock in the presence of the continuous expandable pressurized of collar flexible pipe, cause country rock produce crack, meanwhile, open pressure sensor and Recording instrument, start to monitor the variation in water pressure during detecting earth stress and wall-rock crack development in real time, and by collection Data are transferred to data acquisition recorder by data line;
(5), close pump, when collar flexible pipe is persistently to country rock pressurization until during wall-rock crack instant of complete cracking, record critical pressure value, Meanwhile high-pressure pump is closed, stop pressurizeing to collar flexible pipe;Slowly decline with the pressure of test section, record wall-rock crack and face Pressure value when boundary closes;
(6), release, when the pressure in detecting earth stress section tends to be steady or during there is no being decreased obviously, you can connection air, promote The crack for making to have opened closes completely, that is, releases the pressure in this test section;
(7), repeat it is above-mentioned(4)、(5)、(6)Three steps 3-5 times, obtain multigroup stress parameter, to accurate judgement rock Rupture and the extension state in crack;After the completion of test, recording instrument is closed;And the data of recording data acquisition recorder and regard Frequency carries out comprehensive analysis, and the relevant parameter of crustal stress is drawn according to hydrofracturing.
CN201610208284.2A 2016-04-05 2016-04-05 Based on the uniform water pressure supporing device and method of visualization Expired - Fee Related CN105758561B (en)

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CN110542504A (en) * 2019-09-24 2019-12-06 中国工程物理研究院化工材料研究所 Explosive part residual stress testing system and method based on hydraulic fracturing method
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CN203204175U (en) * 2013-05-10 2013-09-18 安徽恒源煤电股份有限公司 Hydraulic fracturing ground stress test system of panoramic borehole observation instrument
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