CN107589471B - A kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction method - Google Patents

A kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction method Download PDF

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CN107589471B
CN107589471B CN201710573938.6A CN201710573938A CN107589471B CN 107589471 B CN107589471 B CN 107589471B CN 201710573938 A CN201710573938 A CN 201710573938A CN 107589471 B CN107589471 B CN 107589471B
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tunnel
geologic
advance
borehole
water
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CN107589471A (en
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高军
杨文华
骆文学
林晓
付罗靖
严志刚
陈勇
卫亚科
姜军
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高军
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Abstract

The embodiment of the present invention discloses a kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction method, is related to geologic prediction technology, is able to ascend the safety of construction.It include: the mapping and geologic observations for carrying out Railway Tunnel to be onstructed;The mapping and geologic observations are analyzed using TSP long range advance geologic prediction mode, obtain the section and various seismologic parameters of front of tunnel heading structure;Position and the scale of front of tunnel heading unfavorable geologic body are obtained using geologic radar detection method in conjunction with the section and various seismologic parameters of the front of tunnel heading structure of acquisition;Position and scale according to the front of tunnel heading unfavorable geologic body obtained obtain front of tunnel heading water content using infrared detecting water probe method;Position and scale and front of tunnel heading water content based on the front of tunnel heading unfavorable geologic body carry out Advance Drilling to tunnel using long range advance borehole and borehole advance borehole.The present invention is suitable for carrying out advance geologic prediction.

Description

A kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction method
Technical field
The present invention relates to prediction technology more particularly to a kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction sides Method.
Background technique
In high-speed railway construction, when encountering longer mountain range, need to dig up to hundreds of meters, thousands of rice even tens of kms Tunnel, due to different section under mountain range, the complexity of the rock mass of different depth, even if being carried out carefully in survey and design early period Geological mapping, but in practice of construction process, the characteristic for each rock mass encountered in practice after tunnel excavation can be with preparatory foundation The design that geologic prospect carries out has biggish error.For example, in tunnel excavation work progress, in fact it could happen that burst landslide emits The engineering accidents such as mud, are gushed at gushing water in top, so as to cause surface subsidence.Engineering accident not only reduces the safety of construction, It also will affect the duration, increase construction investment, but also will cause the disasters such as surface water resources exhaustion and surface environment.Cause This, carrying out advance geologic prediction is a highly important job during constructing tunnel, and in advance geologic prediction, it is how quasi- Really forecast construction front of tunnel heading just becomes tunnel with the presence or absence of unfavorable geologies such as fault belt, rich water band and solution cavity underground rivers Key technical problem urgently to be resolved in construction.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction method, Neng Goujin Row advance geologic prediction is with the safety of lifting construction.
In a first aspect, the embodiment of the present invention provides a kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction method, comprising:
Carry out the mapping and geologic observations of Railway Tunnel to be onstructed;
The mapping and geologic observations are analyzed using TSP long range advance geologic prediction mode, obtained The section of front of tunnel heading structure and various seismologic parameters;
It is obtained in conjunction with the section and various seismologic parameters of the front of tunnel heading structure of acquisition using geologic radar detection method The position of front of tunnel heading unfavorable geologic body and scale;
Position and scale according to the front of tunnel heading unfavorable geologic body obtained obtain area using infrared detecting water probe method Square water content in front;
Position and scale and front of tunnel heading water content based on the front of tunnel heading unfavorable geologic body, using it is long away from Advance Drilling is carried out to tunnel from advance borehole and borehole advance borehole.
With reference to first aspect, described to carry out Railway Tunnel to be onstructed in the first embodiment of first aspect Mapping include:
Mapping is carried out to the rock stratum that face has been exposed, measures the attitude of rocks and thickness;
The distance of significant rock stratum or interface that the measurement rock stratum distance exposed has disclosed, and it is vertical to calculate it The thickness of level;
The rock stratum exposed and earth's surface are surveyed into stratigraphic section and stratigraphic column is compared, determine its Position and layer position in the sequence of top stratum;
According to the rock stratum sequence of actual measurement stratigraphic section and stratigraphic column, achievement is detected in conjunction with TSP, is inferred to face Position and scale of the rock stratum that will occur in the preset range of front in tunnel;
Periodically earth's surface hydrological environment is observed and monitoring record, understands influence of the constructing tunnel to surface water in time, Determine Construction Control Measures, it is final to draw face geologic sketch map and barrel Geo logical layout.
The first embodiment with reference to first aspect, in second of embodiment of first aspect, the method is also Include:
Water analysis and test are carried out to water burst in hole in time, submit analysis and test result, to influence tunnel-liner The water quality of structure proposes handling suggestion.
The first embodiment with reference to first aspect, in the third embodiment of first aspect, the method is also Include:
After drawing geologic sketch map, excavated surface geologic survey record sheet is filled in;
Gunite concrete is checked whether there is or not cracking and development, anchor pole has non-loosening, steelframe supporting state, and carries out corresponding note Record;
Face-upward slope is checked whether there is or not cracking, flaking, whether there are cracks for earth's surface;Whether there is or not anomalous variations for earth's surface water level.
With reference to first aspect, the first of first aspect any embodiment into the third, the of first aspect In four kinds of embodiments, the position and scale according to the front of tunnel heading unfavorable geologic body obtained is visited using infrared detecting water Survey method obtains front of tunnel heading water content
Detection section starting point from face rear, by 5m point away from laying measuring point;
The initial field strength that water instrument measures each measuring point is visited using infrared ray;
The changed measuring point of field strength is repeated to measure, and makees lateral, vertical scanning, measuring point field strength is very big where record And minimum;
Using infra-red radiation field strength as ordinate, measuring point is abscissa, draws infrared acquisition curve graph;
The water content construction of front of tunnel heading is judged using trend extrapolation according to curve graph.
With reference to first aspect, the first of first aspect any embodiment into the third, the of first aspect In five kinds of embodiments, the long range advance borehole carries out the probing of long range advanced levels, big gun using drilling machine advanced over long distances Eye advance borehole is drilled using short distance advanced levels.
With reference to first aspect, the first of first aspect any embodiment into the third, the of first aspect It is described to include: to tunnel progress Advance Drilling using long range advance borehole and borehole advance borehole in six kinds of embodiments
Testing bore holes rate of penetration observes drilling core, pre-set test is carried out to drilling core, to obtain tunnel Intensity index, drillability index, formation lithology data, rock mass completeness and the underground aqueous condition money of front of tunnel heading rock Material.
The 6th kind of embodiment with reference to first aspect, in the 7th kind of embodiment of first aspect, the method is also Include:
Aperture uses 120 drill bit of Φ, 108 steel pipe of Φ of 3.0m long is put into hole as orifice tube, orifice tube stretches out area Face 50cm adds cement slurry to anchor between hole wall with epoxy ring grease, and orifice tube extension pacifies locking device, and couples with grouting pump, Simultaneously slip casting is blocked when to meet high pressure water in time.
With reference to first aspect, the first of first aspect any embodiment into the third, the of first aspect In eight kinds of embodiments, the method also includes:
In conjunction with the position of the front of tunnel heading unfavorable geologic body and scale, the front of tunnel heading water content and progress The advanced levels probing analysis that Advance Drilling obtains is as a result, formulate constructing tunnel disposal method.
With reference to first aspect, the first of first aspect any embodiment into the third, the of first aspect In nine kinds of embodiments, the method also includes:
Environmental noise is reduced, sampling interval and number of samples has been predefined, has made to receive using early strength expansive cement mortar Device is pasted with rock mass, to guarantee the quality of acquisition signal.
A kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction method provided in an embodiment of the present invention, it is to be onstructed by carrying out The mapping and geologic observations of Railway Tunnel;Using TSP long range advance geologic prediction mode to described ground quality It retouches and geologic observations is analyzed, obtain the section and various seismologic parameters of front of tunnel heading structure;In conjunction with the area of acquisition The section of square structure and various seismologic parameters in front obtain front of tunnel heading unfavorable geologic body using geologic radar detection method Position and scale;Position and scale according to the front of tunnel heading unfavorable geologic body obtained, are obtained using infrared detecting water probe method Front of tunnel heading water content;Position and scale and front of tunnel heading based on the front of tunnel heading unfavorable geologic body are aqueous Body carries out Advance Drilling to tunnel using long range advance borehole and borehole advance borehole, is able to carry out advance geologic prediction With the safety of lifting construction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Other attached drawings are obtained according to these attached drawings.
Fig. 1 is one Railway Tunnel Synthetic Geological Prediction Ahead of Construction method flow schematic diagram of the embodiment of the present invention;
Fig. 2 is two TSP203 geologic prediction test schematic diagram of the embodiment of the present invention;
Fig. 3 is three flow chart of data processing schematic diagram of the embodiment of the present invention;
Fig. 4 is four infrared detecting water probe method schematic diagram of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described in detail with reference to the accompanying drawing.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its Its embodiment, shall fall within the protection scope of the present invention.
Fig. 1 is one Railway Tunnel Synthetic Geological Prediction Ahead of Construction method flow schematic diagram of the embodiment of the present invention, such as Fig. 1 Shown, the method for the present embodiment may include:
Step 101, the mapping and geologic observations of Railway Tunnel to be onstructed are carried out;
In the present embodiment, mapping can be carried out in conjunction with prediction, wherein mapping prediction includes but is not limited to: rock Layer lithology and layer position prediction, ribbon unfavorable geologic body, which influence length of tunnel prediction and irregular seismic events, influences length of tunnel Prediction.
In the present embodiment, as an alternative embodiment, the mapping for carrying out Railway Tunnel to be onstructed includes:
A11 carries out mapping to the rock stratum that face has been exposed, measures the attitude of rocks and thickness;
In the present embodiment, as an alternative embodiment, mapping include: observation and obtain rock mineralogical composition and its Content, structure characteristics, distinctive mark, face front and side stable state, the attitude of rocks, lithology rate of decay, section Reason cranny development degree, gunite concrete cracking, chip off-falling phenomenon, water burst situation, water quality situation, the influence of water, bad air are dense One kind or any combination thereof of degree etc..Wherein, developmental joint fissure degree includes but is not limited to: occurrence, spacing, length, filling Object, quantity etc..
A12, the distance of significant rock stratum or interface that the measurement rock stratum distance exposed has disclosed, and calculate it The thickness of perpendicular slice;
The rock stratum exposed is surveyed stratigraphic section with earth's surface and stratigraphic column is compared, determined by A13 Its position and layer position in the sequence of top stratum;
A14 detects achievement in conjunction with TSP, is inferred to slap according to the rock stratum sequence of actual measurement stratigraphic section and stratigraphic column Position and scale of the rock stratum that will occur in square preset range in face of son in tunnel;
In the present embodiment, as an alternative embodiment, geologic observations carry out after explosion, before just spray.
In the present embodiment, as an alternative embodiment, in the construction process, carry out ground by geomatics engineer after every separate explosion Quality is retouched and geologic observations.
A15, is periodically observed earth's surface hydrological environment and monitoring record, understands constructing tunnel in time to the shadow of surface water It rings, determines Construction Control Measures, it is final to draw face geologic sketch map and barrel Geo logical layout.
In the present embodiment, as another alternative embodiment, this method further include:
Water analysis and test are carried out to water burst in hole in time, submit analysis and test result, to influence tunnel-liner The water quality of structure proposes handling suggestion.
In the present embodiment, the handling suggestion of proposition is reported to the project engineer for managing geological work, is taken effectively with benefit Safeguard procedures.
In the present embodiment, as yet another alternative embodiment, this method further include:
After drawing geologic sketch map, excavated surface geologic survey record sheet is filled in;
Gunite concrete is checked whether there is or not cracking and development, anchor pole has non-loosening, steelframe supporting state, and carries out corresponding note Record;
Face-upward slope is checked whether there is or not cracking, flaking, whether there are cracks for earth's surface;Whether there is or not anomalous variations for earth's surface water level.
Step 102, using tunnel geological forecast (TSP, Tunnel Geological Prediction/ Prospecting) long range advance geologic prediction mode analyzes the mapping and geologic observations, obtains area The section of square structure and various seismologic parameters in front;
In the present embodiment, as an alternative embodiment, using TSP203 advance geologic prediction.
In the present embodiment, earthquake (sound) wave is generated by the small-scale explosion on specified point, and is received by electronic sensor.When Seismic wave encounters the boundary of change of rock strength big (variation of such as physical characteristic and rock type, the appearance of shear-zone, rupture zone) When face, at Diffraction Point, the energy of part ejected wave is reflected back.
Fig. 2 is two TSP203 geologic prediction test schematic diagram of the embodiment of the present invention.Referring to fig. 2, the test side TSP203 Formula is explored especially suitable for high-resolution tunnel refracted seismic (microseism), and fracture and rock strength reduce the prison in area It surveys.
In the present embodiment, the distance of 150~300m can be predicted in the TSP203 theory of testing.
It in the present embodiment, is given the correct time in advance, after receiver and sensor sleeve are installed 12h, carries out blast hole dress Medicine, sensor insertion and functional test, then ignite blast hole, seismic signal record are carried out to every separate explosion, according to record Seismic signal forecast.
In the present embodiment, when formal explosion acquires data, stop all constructions in Tunnel, to reduce acquisition as far as possible Interference of the data arrived by outside noise.
In the present embodiment, TSP203 test use special-purpose software, can to firsthand information collected in tunnel carry out with Technical treatment for the purpose of compacting interference, raising signal-to-noise ratio and resolution ratio, extraction seismologic parameter.Before data processing, tunnel is first determined The data such as the parameter of road profile, the explosive payload of each blasthole, then handled by special-purpose software, export the section of front of tunnel heading structure And various seismologic parameters.
Fig. 3 is three flow chart of data processing schematic diagram of the embodiment of the present invention.Referring to Fig. 3, comprising:
Data setting;
Bandpass filtering;
First break picking;
Extraction process;
Energy balance;
Quality factor estimation;
Back wave picks up;
P, S wavelength-division from;
Velocity analysis;
Time and depth transfer;
Reflecting interface extracts.
In the present embodiment, after carrying out data processing, the result (forecast) of output is that variation of lithological may occur for rock property Position, each reflecting interface country rock physical property.Pass through human interpretation, it can be deduced that the rock parameter of reflecting interface, occurrence And its implicit information after correlation, and each step explanation, to predict the property of bad geological section.
In the present embodiment, to guarantee forecast length and forecast precision, quality of forecast is improved, as an alternative embodiment, This method further include:
Environmental noise is reduced, sampling interval and number of samples has been predefined, has made to receive using early strength expansive cement mortar Device is pasted with rock mass, to guarantee the quality of acquisition signal.
Step 103, in conjunction with the section and various seismologic parameters of the front of tunnel heading structure of acquisition, geologic radar detection is utilized Method obtains position and the scale of front of tunnel heading unfavorable geologic body;
In the present embodiment, geological radar is that the propagation characteristic based on electromagnetic wave in Effective medium works.Specifically, After transmitting antenna issues the electromagnetic wave of microwave frequency band, it can be reflected when encountering inhomogeneous medium or variant dielectric constant, instead It penetrates signal and record is received by receiving antenna, form radar profile through MICROCOMPUTER PROCESSING, interpretation personnel solve radar profile Analysis is translated, position and the scale of front of tunnel heading unfavorable geologic body are obtained.
In the present embodiment, geologic radar detection method detects the unfavorable geologic body within the scope of 30m, especially water-bearing geologic body Effect is good.As an alternative embodiment, geologic radar detection method is mainly closing on the use of water-bearing structure location, and proximity detection is rich Water-soluble hole, water-bearing fault etc..
Step 104, the position according to the front of tunnel heading unfavorable geologic body obtained and scale, utilize infrared detecting water probe method Obtain front of tunnel heading water content;
In the present embodiment, infrared detecting water probe method is that rock mass infrared radiation field field strength is caused to change using groundwater activities Characteristic, to deduce a kind of detection method of front of tunnel heading water content.
Position and rule in the present embodiment, as an alternative embodiment, according to the front of tunnel heading unfavorable geologic body obtained Mould, obtaining front of tunnel heading water content using infrared detecting water probe method includes:
B11, the detection section starting point from face rear, by 5m point away from laying measuring point;
B12 visits the initial field strength that water instrument measures each measuring point using infrared ray;
B13 repeats to measure to the changed measuring point of field strength, and makees lateral, vertical scanning, measuring point field strength where record Very big and minimum;
B14, using infra-red radiation field strength as ordinate, measuring point is abscissa, draws infrared acquisition curve graph;
B15 judges the water content construction of front of tunnel heading using trend extrapolation according to curve graph.
Fig. 4 is four infrared detecting water probe method schematic diagram of the embodiment of the present invention.Wherein, A is current electrode;M and N are Measuring electrode;B is opposite infinite point (AB > 300m);P is water content contact point.
In the present embodiment, which visits water instrument using infrared ray, mainly preliminary in TSP-203 and horizontal protruded drill hole Determine that 30m or so starts to detect before aqueous location, to further determine that aqueous body position and scale.
Step 105, position and scale and front of tunnel heading water content based on the front of tunnel heading unfavorable geologic body, Advance Drilling is carried out to tunnel using long range advance borehole and borehole advance borehole.
In the present embodiment, as an alternative embodiment, long range advance borehole using drilling machine advanced over long distances grown away from It is drilled from advanced levels, borehole advance borehole is drilled using short distance advanced levels.
Advance Drilling is most direct, most efficient method in constructing tunnel phase advance geologic prediction, and to other The verifying and supplement of detection means achievement.
In the present embodiment, as an alternative embodiment, using long range advance borehole and borehole advance borehole to tunnel Carrying out Advance Drilling includes:
Testing bore holes rate of penetration observes drilling core, pre-set test is carried out to drilling core, to obtain tunnel Intensity index, drillability index, formation lithology data, rock mass completeness and the underground aqueous condition money of front of tunnel heading rock Material.
In the present embodiment, as an alternative embodiment, advanced levels probing is divided into single hole horizontal drilling and porosity levels bore Visit two kinds, wherein porosity levels probing is designed by 3 holes, and hole depth is set as 40~60m, using geological drilling rig rod bore.
In the present embodiment, gushing water is out of control when to prevent from meeting high pressure water, and this method can also include:
Aperture uses 120 drill bit of Φ, 108 steel pipe of Φ of 3.0m long is put into hole as orifice tube, orifice tube stretches out area Face 50cm adds cement slurry to anchor between hole wall with epoxy ring grease, and orifice tube extension pacifies locking device, and couples with grouting pump, Simultaneously slip casting is blocked when to meet high pressure water in time.
In the present embodiment, as an alternative embodiment, in drilling process, drilling speed, water are recorded in detail by geomatics engineer Matter, water situation of change, uniformly edit and record, collect, comprehensive descision forecast the front hydrology, geological condition.
In the present embodiment, as another alternative embodiment, this method further include:
In conjunction with the position of the front of tunnel heading unfavorable geologic body and scale, the front of tunnel heading water content and progress The advanced levels probing analysis that Advance Drilling obtains is as a result, formulate constructing tunnel disposal method.
In the present embodiment, according to the front of tunnel heading unfavorable geology forecast result (position of front of tunnel heading unfavorable geologic body With scale and front of tunnel heading water content) selection advanced levels brill, determine that boring point installation position simultaneously carries out live probing, thus Obtain intensity index, drillability index, formation lithology data, rock mass completeness and the underground water of tunnel tunnel face front rock The information such as condition data, by analyzing available advanced levels probing analysis as a result, pre- in conjunction with front of tunnel heading unfavorable geology Report is with advanced levels probing analysis as a result, to generate constructing tunnel disposal method.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.

Claims (5)

1. a kind of Railway Tunnel Synthetic Geological Prediction Ahead of Construction method characterized by comprising
Carry out the mapping and geologic observations of Railway Tunnel to be onstructed;
The mapping and geologic observations are analyzed using TSP long range advance geologic prediction mode, obtain area The section of square structure and various seismologic parameters in front, it is described to use TSP long range advance geologic prediction mode further include: to reduce ring Border noise, has predefined sampling interval and number of samples, pastes receiver with rock mass using early strength expansive cement mortar, To guarantee the quality of acquisition signal, using TSP203 advance geologic prediction;
Area is obtained using geologic radar detection method in conjunction with the section and various seismologic parameters of the front of tunnel heading structure of acquisition The position of square unfavorable geologic body and scale in front;
Position and scale according to the front of tunnel heading unfavorable geologic body obtained, before obtaining face using infrared detecting water probe method Square water content, comprising:
Detection section starting point from face rear, by 5m point away from laying measuring point;
The initial field strength that water instrument measures each measuring point is visited using infrared ray;
The changed measuring point of field strength is repeated to measure, and makees lateral, vertical scanning, the very big and pole of measuring point field strength where record Small value;
Using infra-red radiation field strength as ordinate, measuring point is abscissa, draws infrared acquisition curve graph;
The water content construction of front of tunnel heading is judged using trend extrapolation according to curve graph;
Position and scale and front of tunnel heading water content based on the front of tunnel heading unfavorable geologic body, it is super using long range Preceding drilling and borehole advance borehole carry out Advance Drilling to tunnel;Wherein, advanced levels probing be divided into single hole horizontal drilling and Porosity levels drill two kinds, wherein porosity levels probing is designed by 3 holes, and hole depth is set as 40~60m;
The long range advance borehole carries out the probing of long range advanced levels using drilling machine advanced over long distances, and borehole advance borehole is adopted It is drilled with short distance advanced levels;
It is described to include: to tunnel progress Advance Drilling using long range advance borehole and borehole advance borehole
Testing bore holes rate of penetration observes drilling core, pre-set test is carried out to drilling core, to obtain tunnel face Intensity index, drillability index, formation lithology data, rock mass completeness and the underground water condition data of square rock in front;
It is described that Advance Drilling is carried out to tunnel using long range advance borehole and borehole advance borehole further include:
Aperture uses 120 drill bit of Φ, 108 steel pipe of Φ of 3.0m long is put into hole as orifice tube, orifice tube stretches out face 50cm adds cement slurry to anchor between hole wall with epoxy ring grease, and orifice tube extension pacifies locking device, and couples with grouting pump, with Simultaneously slip casting is blocked in time when just meeting high pressure water.
2. Railway Tunnel Synthetic Geological Prediction Ahead of Construction method according to claim 1, which is characterized in that the progress The mapping of Railway Tunnel to be onstructed includes:
Mapping is carried out to the rock stratum that face has been exposed, measures the attitude of rocks and thickness;
The distance of significant rock stratum or interface that the measurement rock stratum distance exposed has disclosed, and calculate its perpendicular slice Thickness;
Stratigraphic section is surveyed into earth's surface in the rock stratum exposed and stratigraphic column is compared, determines it in earth's surface Position and layer position in the sequence of rock stratum;
According to the rock stratum sequence of actual measurement stratigraphic section and stratigraphic column, achievement is detected in conjunction with TSP, is inferred to front of tunnel heading Position and scale of the rock stratum that will occur in preset range in tunnel;
Periodically earth's surface hydrological environment is observed and monitoring record, the timely influence for understanding constructing tunnel to surface water determine Construction Control Measures, it is final to draw face geologic sketch map and barrel Geo logical layout.
3. Railway Tunnel Synthetic Geological Prediction Ahead of Construction method according to claim 2, which is characterized in that the method Further include:
Water analysis and test are carried out to water burst in hole in time, submit analysis and test result, to influence tunnel lining structure Water quality propose handling suggestion.
4. Railway Tunnel Synthetic Geological Prediction Ahead of Construction method according to claim 2, which is characterized in that the method Further include:
After drawing geologic sketch map, excavated surface geologic survey record sheet is filled in;
Gunite concrete is checked whether there is or not cracking and development, anchor pole has non-loosening, steelframe supporting state, and carries out respective record;
Face-upward slope is checked whether there is or not cracking, flaking, whether there are cracks for earth's surface;Whether there is or not anomalous variations for earth's surface water level.
5. Railway Tunnel Synthetic Geological Prediction Ahead of Construction method according to any one of claims 1 to 4, feature exist In, the method also includes:
In conjunction with the position of the front of tunnel heading unfavorable geologic body and scale, the front of tunnel heading water content and carry out advanced Obtained advanced levels probing analysis is drilled as a result, formulating constructing tunnel disposal method.
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