CN101581223B - Method for detecting slip casting effect of tunnel - Google Patents
Method for detecting slip casting effect of tunnel Download PDFInfo
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- CN101581223B CN101581223B CN2009103035270A CN200910303527A CN101581223B CN 101581223 B CN101581223 B CN 101581223B CN 2009103035270 A CN2009103035270 A CN 2009103035270A CN 200910303527 A CN200910303527 A CN 200910303527A CN 101581223 B CN101581223 B CN 101581223B
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Abstract
The invention discloses a method for detecting slip casting effect of a tunnel, which comprises the following steps of: before slip casting and after slip casting on the tunnel, a series of regular arrayed earthquake focuses are respectively prefabricated; and then a TSP geological forecast system is respectively used for probing the situation of an adjacent rock in front of the tunnel face; and then the data of the TSP detection results before the slip casting and after slip casting on tunnel is compared and analyzed; a cross-sectional profile or a longitudinal profile, a layout plan and a space pattern of the slip casting grout distribution are analyzed and drawn by applying a processing software, thus accurately judging the effect of the slip casting of the tunnel. The invention relatesto a method which uses the TSP geological forecast system for comparing and probing so as to detect the slip casting effect of the tunnel, can clearly prove up the distribution and trending of the gr out in the rock mass and the compaction rate of the rock mass after slip casting.
Description
Technical field
The present invention relates to the method that a kind of slip casting effect of tunnel detects, particularly relate to the method that a kind of TSP of use advance geologic prediction system detects slip casting effect.
Background technology
Slip casting has obtained using widely in many fields such as building, water conservancy, mine, traffic as a kind of special job practices.When building the tunnel, slip casting method commonly used is reinforced loose weak surrounding rock around the tunnel, and phreatic flowing with the displacement of controlling the job site geotechnical body and landslide etc. limit in the space in the filling rock mass.
For the effect detection after the slip casting, the flexible ripple method of using at present of method, dynamic and static feeler inspection method, methods such as core method, radioactive ray density measurement are got in sampling.These methods all belong to a little detects, rather than the zone detects, and that is to say that probe result can only confirm to detect the hole and a bit have or not slurries, and can not prove whether a scope of detecting around the hole exists slurries.Because the number of inspecting hole can not be a lot, the result who detects has very big contingency, can't learn especially as for the degree of agreement of the predetermined injection scope of actual distribution state and the design of slurries in the stratum, the compaction rate after the rock mass slip casting.Along with the continuous appearance of various reinforcement means, slip casting construction method wants to keep intrinsic advantage, establishes oneself in an unassailable position, and only overcomes above-mentioned weakness, the needs of the development that can adapt to the situation.
Summary of the invention
Technical problem to be solved by this invention provides a kind ofly can clearly verify distribution and the trend of slurries in rock mass, and the method that detects of the slip casting effect of tunnel of the compaction rate after the rock mass slip casting.
In order to solve the problems of the technologies described above; The method that slip casting effect of tunnel provided by the invention detects; It is characterized in that: before tunnel slip casting and after the slip casting; The artificial respectively earthquake source of making a series of regular arrangements uses TSP advance geologic prediction system to survey the situation of tunnel tunnel face front country rock more respectively, compares the TSP testing result data before and after the tunnel slip casting, analyze then; Use process software analysis again, draw horizontal stroke or skiagraph, plan view and stereogram that grouting serous fluid distributes, thereby correctly judge the effect that tunnel slip casting obtains.
Step of the present invention is:
The first step, data acquisition
(1), according to the relation of attitude of rocks and tunnel axis, in tunnel side wall placement sensor installing hole and shot point powder charge hole, borehole distance receiver 1 is a 16-18 rice, the tunnel is provided with 24 big gun holes 2, big gun hole 2 spacings are 1.5 meters;
(2), sensor installing hole parameter is carried out repetition measurement, then the receiver sleeve pipe is put into exploration hole;
(3), shot point big gun hole parameter is carried out repetition measurement, with wooden tamper the blasting charge is laid and put in place;
(4), receiver is put into the test sleeve pipe, to good direction, connect the signal data transmission line during placement, acknowledge(ment) signal line one end connects sensor, and the other end connects data record unit;
(5), start record cell, acquisition parameter is set;
(6), connect shot point initiation system and signal record triggering system; Detonating cord one termination loading wire of electric detonator, another termination record triggers box;
(7), under the noise checking mode test record Elementary Function, carry out noise and keep watch on;
(8), single explosive source shot point successively, carry out the seismic signal data acquisition;
Second step, data analysis
The data of utilizing process software that the TSP detection system is gathered are handled, and comprise following flow process:
(1), data length is set, according to geological condition with survey purpose, the data dominant record size rationally is set to practice thrift computing time, internal memory and memory space;
(2), the bandpass filter parameter is set, the seismic wave frequency spectrum that software processes obtains is analyzed, according to the seismic wave spectral characteristic of the different rock-layers that obtains of test in the past, select rational filtering parameter;
(3), at first the house of arriving signal ripple is got, the signal of recipient collection comprises direct wave, back wave and the disturbing wave of attenuation of seismic waves in the data acquisition, and the disturbing wave signal can be handled through the mode of filtering;
(4), first arrival handles, and confirms the shear wave first arrival by the compressional wave first arrival, TSP-win needs the shear wave first arrival to calculate shear wave velocity, and the analysis window that need place a weak point for following quality estimation is on through shear wave waveform;
(5), medicine big gun energy balance, to each big gun since the elastic energy release change compensate;
(6), estimating quality factor, confirm attenuation parameter Q by preliminary wave;
(7), the extraction of back wave, comprise Radon conversion and Q filtering, the Radon conversion is to extract back wave with dip filtering; Q filtering is meant through the partly contrary decay of changing ripple of filtering;
(8), the P-S wavelength-division leaves, and converts X, Y, Z component record into P, SH, SV component record;
(9), the seimic wave velocity analysis, comprise 4 steps: create a rate pattern, Model Calculation hourage, skew geological data to be with exciting apart from the road collection thus, and draw a new model by these skews;
(10), the depth migration of reflecting interface, mainly be seismic amplitude to be mapped to physical space by time-domain through vertical, shear wave skew;
(11), the extraction at seismic reflection interface, use image processing and main compressional wave and the transverse wave reflection interface of the results list extraction by final migration result, comprise the extraction at P wave reflection interface, the extraction at SH wave reflection interface and the extraction at SV wave reflection interface;
The 3rd step after the tunnel tunnel face front mortar depositing construction is accomplished, drilled through the powder charge hole of same depth again in primary shot point powder charge hole site, the identical explosive charge of packing into, and the position of signal receiver remains unchanged.Repeat the first step and the work in second step;
The 4th step, the data result of twice observation is gathered contrast, submit achievement to.
Adopt the method for the slip casting effect of tunnel detection of technique scheme; Its operating principle is a utilization seismic reflection principle; When carrying out the slip casting effect detection, make the earthquake source of a series of regular arrangements by manual work, consequent seismic wave is outwards propagated; When the wave impedance that runs into rock mass when seismic wave changes (such as crack, tomography or formation variations are arranged), reflection and refraction will take place.Reflected signal is carrying the geological information of institute's penetrating ground rock mass and can be received device and receives, and refracted wave will continue propagation forward, the reflection and the refraction of continuation spot seismic wave when running into the medium of different wave impedance.
In sum, the present invention is that a kind of TSP of use advance geologic prediction system compares to survey and detects the method that slip casting effect of tunnel detects, and can clearly verify distribution and the trend of slurries in rock mass, and the compaction rate after the rock mass slip casting.
Description of drawings
Fig. 1 is the TSP system works schematic diagram of " soft-hard " rock;
Fig. 2 is the TSP system works schematic diagram of " hard-soft " rock;
Fig. 3 is grouting serous fluid distribution plane, longitudinal section sketch map;
Fig. 4 is a grouting serous fluid distribution stereogram;
Fig. 5 is the TSP system layout.
The specific embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Use provided by the invention TSP advance geologic prediction system compare survey detect method that slip casting effect of tunnel detects before tunnel slip casting with slip casting after; The artificial respectively earthquake source of making a series of regular arrangements; Use TSP advance geologic prediction system to survey the situation of tunnel tunnel face front country rock more respectively; Compare the TSP testing result data before and after the tunnel slip casting, analyze then; Use process software analysis again, draw horizontal stroke or skiagraph, plan view and stereogram that grouting serous fluid distributes, thereby correctly judge the effect that tunnel slip casting obtains.Can clearly verify distribution and the trend of slurries in rock mass, and the compaction rate after the rock mass slip casting.
The specific embodiment of the present invention is following:
The first step, data acquisition, referring to Fig. 5, among the figure, the 1-receiver, 2-big gun hole, the 3-rock stratum, the 4-work plane:
(1), according to the relation of attitude of rocks and tunnel axis, in tunnel side wall placement sensor installing hole and shot point powder charge hole, borehole distance receiver 1 is a 16-18 rice, the tunnel is provided with 24 big gun holes 2, big gun hole 2 spacings are 1.5 meters;
(2), sensor installing hole parameter is carried out repetition measurement, then the receiver sleeve pipe is put into exploration hole;
(3), shot point big gun hole parameter is carried out repetition measurement, with wooden tamper the blasting charge is laid and put in place;
(4), receiver is put into the test sleeve pipe, to good direction, connect the signal data transmission line during placement, acknowledge(ment) signal line one end connects sensor, and the other end connects data record unit;
(5), start record cell, acquisition parameter is set;
(6), connect shot point initiation system and signal record triggering system; Detonating cord one termination loading wire of electric detonator, another termination record triggers box;
(7), under the noise checking mode test record Elementary Function, carry out noise and keep watch on;
(8), single explosive source shot point successively, carry out the seismic signal data acquisition;
Second step, data analysis
The data of utilizing process software that the TSP detection system is gathered are handled, and comprise following flow process:
(1), data length is set, according to geological condition with survey purpose, the data dominant record size rationally is set to practice thrift computing time, internal memory and memory space;
(2), the bandpass filter parameter is set, the seismic wave frequency spectrum that software processes obtains is analyzed, according to the seismic wave spectral characteristic of the different rock-layers that obtains of test in the past, select rational filtering parameter;
(3), at first the house of arriving signal ripple is got, the signal of recipient collection comprises direct wave, back wave and the disturbing wave of attenuation of seismic waves in the data acquisition, and the disturbing wave signal can be handled through the mode of filtering;
(4), first arrival handles, and confirms the shear wave first arrival by the compressional wave first arrival, TSP-win needs the shear wave first arrival to calculate shear wave velocity, and the analysis window that need place a weak point for following quality estimation is on through shear wave waveform;
(5), medicine big gun energy balance, to each big gun since the elastic energy release change compensate;
(6), estimating quality factor, confirm attenuation parameter Q by preliminary wave;
(7), the extraction of back wave, comprise Radon conversion and Q filtering, the Radon conversion is to extract back wave with dip filtering; Q filtering is meant through the partly contrary decay of changing ripple of filtering;
(8), the P-S wavelength-division leaves, and converts X, Y, Z component record into P, SH, SV component record;
(9), the seimic wave velocity analysis, comprise 4 steps: create a rate pattern, Model Calculation hourage, skew geological data to be with exciting apart from the road collection thus, and draw a new model by these skews;
(10), the depth migration of reflecting interface, mainly be seismic amplitude to be mapped to physical space by time-domain through vertical, shear wave skew;
(11), the extraction at seismic reflection interface, use image processing and main compressional wave and the transverse wave reflection interface of the results list extraction by final migration result, comprise the extraction at P wave reflection interface, the extraction at SH wave reflection interface and the extraction at SV wave reflection interface;
The 3rd step after the tunnel tunnel face front mortar depositing construction is accomplished, drilled through the powder charge hole of same depth again in primary shot point powder charge hole site, the identical explosive charge of packing into, and the position of signal receiver remains unchanged.Repeat the first step and the work in second step;
The 4th step, the data result of twice observation is gathered contrast, submit achievement to.
Referring to Fig. 1 and Fig. 2; Its operating principle is a utilization seismic reflection principle; When carrying out the slip casting effect detection, make the earthquake source of a series of regular arrangements by manual work, consequent seismic wave is outwards propagated; When the wave impedance that runs into rock mass when seismic wave changes (such as crack, tomography or formation variations are arranged), reflection and refraction will take place.Reflected signal is carrying the geological information of institute's penetrating ground rock mass and can be received device and receives, and refracted wave will continue propagation forward, the reflection and the refraction of continuation spot seismic wave when running into the medium of different wave impedance.
Referring to Fig. 3 and Fig. 4, be grouting serous fluid distribution of the present invention plane, longitudinal section sketch map and grouting serous fluid distribution stereogram.The present invention can summarize with other the concrete form without prejudice to spirit of the present invention or principal character.Therefore; No matter from which point, above-mentioned embodiment of the present invention all can only be thought can not limit the present invention to explanation of the present invention, and claims have been pointed out scope of the present invention; And scope of the present invention is not pointed out in above-mentioned explanation; Therefore, in implication suitable and any change in the scope, all should think to be included in the scope of claims with claims of the present invention.
Claims (2)
1. the method that detects of a slip casting effect of tunnel; It is characterized in that: before tunnel slip casting and after the slip casting; The artificial respectively earthquake source of making a series of regular arrangements; Use TSP advance geologic prediction system to survey the situation of tunnel tunnel face front country rock more respectively; Compare the TSP testing result data before and after the tunnel slip casting, analyze then, use process software analysis again, draw horizontal stroke or skiagraph, plan view and stereogram that grouting serous fluid distributes, thereby correctly judge the effect that tunnel slip casting obtains.
2. the method that slip casting effect of tunnel according to claim 1 detects is characterized in that: comprise the steps:
The first step, data acquisition
(1), according to the relation of attitude of rocks and tunnel axis, in tunnel side wall placement sensor installing hole and shot point powder charge hole, the borehole distance receiver is a 16-18 rice, the tunnel is provided with a plurality of big guns hole, borehole spacing is 1.5 meters;
(2), sensor installing hole parameter is carried out repetition measurement, then the receiver sleeve pipe is put into exploration hole;
(3), shot point big gun hole parameter is carried out repetition measurement, with wooden tamper the blasting charge is laid and put in place;
(4), receiver is put into the test sleeve pipe, to good direction, connect the signal data transmission line during placement, acknowledge(ment) signal line one end connects sensor, and the other end connects data record unit;
(5), start record cell, acquisition parameter is set;
(6), connect shot point initiation system and signal record triggering system; Detonating cord one termination loading wire of electric detonator, another termination record triggers box;
(7), under the noise checking mode test record Elementary Function, carry out noise and keep watch on;
(8), single explosive source shot point successively, carry out the seismic signal data acquisition;
Second step, data analysis
The data of utilizing process software that the TSP detection system is gathered are handled, and comprise following flow process:
(1), data length is set, according to geological condition with survey purpose, the data dominant record size rationally is set to practice thrift computing time, internal memory and memory space;
(2), the bandpass filter parameter is set, the seismic wave frequency spectrum that software processes obtains is analyzed, according to the seismic wave spectral characteristic of the different rock-layers that obtains of test in the past, select rational filtering parameter;
(3), at first the house of arriving signal ripple is got, the signal of recipient collection comprises direct wave, back wave and the disturbing wave of attenuation of seismic waves in the data acquisition, and the disturbing wave signal can be handled through the mode of filtering;
(4), first arrival handles, and confirms the shear wave first arrival by the compressional wave first arrival, TSP-win needs the shear wave first arrival to calculate shear wave velocity, and the analysis window that need place a weak point for following quality estimation is on through shear wave waveform;
(5), medicine big gun energy balance, to each big gun since the elastic energy release change compensate;
(6), estimating quality factor, confirm attenuation parameter Q by preliminary wave;
(7), the extraction of back wave, comprise Radon conversion and Q filtering, the Radon conversion is to extract back wave with dip filtering; Q filtering is meant through the partly contrary decay of changing ripple of filtering;
(8), the P-S wavelength-division leaves, and converts X, Y, Z component record into P, SH, SV component record;
(9), the seimic wave velocity analysis, comprise 4 steps: create a rate pattern, Model Calculation hourage, skew geological data to be with exciting apart from the road collection thus, and draw a new model by these skews;
(10), the depth migration of reflecting interface, mainly be seismic amplitude to be mapped to physical space by time-domain through vertical, shear wave skew;
(11), the extraction at seismic reflection interface, use image processing and main compressional wave and the transverse wave reflection interface of the results list extraction by final migration result, comprise the extraction at P wave reflection interface, the extraction at SH wave reflection interface and the extraction at SV wave reflection interface;
The 3rd step after the tunnel tunnel face front mortar depositing construction is accomplished, drilled through the powder charge hole of same depth again in primary shot point powder charge hole site, the identical explosive charge of packing into, and the position of signal receiver remains unchanged, and repeats the work in the first step and second step;
The 4th step, the data result of twice observation is gathered contrast, submit achievement to.
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| CN2009103035270A CN101581223B (en) | 2009-06-23 | 2009-06-23 | Method for detecting slip casting effect of tunnel |
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| CN2009103035270A CN101581223B (en) | 2009-06-23 | 2009-06-23 | Method for detecting slip casting effect of tunnel |
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| CN101581223B true CN101581223B (en) | 2012-01-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103573269B (en) * | 2013-11-13 | 2015-07-15 | 上海建科工程咨询有限公司 | Shield tunnel grouting layer performance detection method |
| CN104215748B (en) * | 2014-08-19 | 2015-04-22 | 山东大学 | Comprehensive quantitative determination method for grouting reinforcement effect of underground engineering crushed surrounding rocks |
| EP3433642A1 (en) | 2016-03-24 | 2019-01-30 | Saudi Arabian Oil Company | Simultaneous wavefield reconstruction and receiver deghosting of seismic streamer data using an l1 inversion |
| CN107605491B (en) * | 2017-09-13 | 2019-07-09 | 中国矿业大学(北京) | A kind of tunneling method |
| US10996361B2 (en) | 2018-09-07 | 2021-05-04 | Saudi Arabian Oil Company | Adaptive receiver deghosting for seismic streamer |
| CN110376660B (en) * | 2019-08-01 | 2020-11-06 | 山东大学 | Underground engineering geological disaster grouting effect real-time monitoring method |
| US11320557B2 (en) | 2020-03-30 | 2022-05-03 | Saudi Arabian Oil Company | Post-stack time domain image with broadened spectrum |
| CN114779316B (en) * | 2022-06-23 | 2022-11-04 | 中铁大桥科学研究院有限公司 | Tunnel flowing water high-osmotic-pressure grouting intelligent monitoring method and related equipment |
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| 李金花.瞬变电磁法在检测采空区注浆效果方面的应用.《山西建筑》.2007,(第09期), * |
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