CN104213907B - Method for detecting temperature of water body in front of tunnel face on basis of temperature field principle - Google Patents
Method for detecting temperature of water body in front of tunnel face on basis of temperature field principle Download PDFInfo
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- CN104213907B CN104213907B CN201410416806.9A CN201410416806A CN104213907B CN 104213907 B CN104213907 B CN 104213907B CN 201410416806 A CN201410416806 A CN 201410416806A CN 104213907 B CN104213907 B CN 104213907B
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Abstract
The invention provides a method for detecting the temperature of a water body in front of a tunnel face on the basis of a temperature field principle. According to the method, a sensor (3) arranged in a temperature measuring sensor pipe joint is used for measuring the temperature in a temperature measuring hole, further, the required data is obtained, then, the change trend of the temperature field in front of the tunnel face is analyzed through the measured data, a temperature abnormal region in front of the tunnel face is found out, the front water body condition is further judged, and further, a plurality of temperature measuring sensor pipe joints and a plurality of connecting pipe joints are adopted for forming a measuring head, wherein a sensor connecting ring arranged on each temperature measuring sensor pipe joint is buckled with a pipe joint connecting lock catch arranged on the corresponding connecting pipe joint, so that the temperature sensing sensor pipe joints and the connecting pipe joints realize the movable connection, and the flexibility of the measuring head is greatly improved. The measuring device has the characteristics that the structure is simple, the maintenance is convenient, the measuring precision is higher, and the like. The method provided by the invention has the characteristics that the operation is simple, the measurement is precise, and the like. The method is suitable for large-range popularization and application.
Description
[technical field]
The present invention relates to the detection method of a kind of water temperature, particularly relate to the detection method of a kind of water-bearing rock body internal temperature, be specifically related to the detection method of a kind of front of tunnel heading water temperature based on temperature field principle.
[background technology]
Known, during constructing tunnel, in order to ensure the accuracy of tunnel tunnel face front water body prediction, the physical prospecting equipment such as TGP, geological radar, transient electromagnetic method are typically used to carry out comprehensive forecasting, wherein " underground engineering water content based on rock temperature field structure forecast system and the method " of Shandong University, it is on the basis of the feasibility having expounded the forecast of Geothermal method constructing tunnel retention of excessive fluid adequately, have developed RTP temperature method geological prediction system, and this equipment exists many deficiencies, specific as follows:
1. for the interpretation result of front of tunnel heading water body existence as other complex geophysical prospecting equipment, it is all the distance that distance face is described, and the particular location of face relatively cannot accurately judge；
2. note after 24h fixed by mortar after temperature element embedment boring and start to extract temperature measurement data, owing to water body near face is reflected the shortage consideration about the factor such as conduction of heat, heat convection in the temperature field in time and space by abutment wall, and differ from away from side wall temperatures near side-walls temperature, make measurement result be under suspicion；
3. the precision of detecting devices is very important etc. for the impact of temperature variation curve variable quantity.
The detection method the most how providing a kind of efficient measurement front of tunnel heading water temperature has just become the long-term technology demand of those skilled in the art.
[summary of the invention]
Not enough for overcoming present in background technology, the invention provides the detection method of a kind of front of tunnel heading water temperature based on temperature field principle, the present invention is by the sensor measurement thermometric temperature in borehole in temperature transducer tube coupling and then obtains desired data, then the data analysis by recording goes out front of tunnel heading change of temperature field trend, find out front of tunnel heading temperature anomaly region, and then judge the front water body position relative to face, further, tube coupling connection snap close sensor on temperature transducer tube coupling being connected ring and be connected on tube coupling interlocks, make temperature transducer tube coupling and be connected tube coupling realization flexible connection, substantially increase the motility of gauge head, the present invention has simple to operate, measure the features such as accurate.
For realizing goal of the invention as above, the present invention uses technical scheme as described below:
A kind of detection method of front of tunnel heading water temperature based on temperature field principle, described method specifically includes following steps:
One, perforate on face:
First holing on face or utilize existing big gun hole or geotechnical boring, the most some thermometer holes are evenly distributed on face as far as possible；
Two, the temperature in institute's perforate is measured:
Connect step, in the thermometer hole that the temperature transducer tube coupling a section insertion first step on temperature measuring equipment is obtained, after temperature transducer tube coupling reaches at the bottom of thermometer hole and intercepts the outer temperature interference of face, measure the temperature of thermometer hole sidewall, then from face to recording one group of data at the bottom of thermometer hole, then pull out temperature transducer tube coupling, select next thermometer hole to carry out data acquisition；
Three, data process&analysis:
Connect step, the thermometer hole that one group of data show from face to the temperature gradient curve at the bottom of thermometer hole, multi-group data is shown that the space temperature field of front of tunnel heading certain area, according to front of tunnel heading change of temperature field trend, find out front of tunnel heading temperature anomaly region, and then judge front water body situation.
The detection method of described front of tunnel heading water temperature based on temperature field principle, described temperature measuring equipment includes gauge head and temperature measurer, described temperature measurer connects gauge head by circuit, described gauge head includes a plurality of temperature transducer tube coupling and a plurality of connection tube coupling, being respectively equipped with one between each two temperature transducer tube coupling and connect tube coupling, described each two temperature transducer tube coupling is by the temperature measuring equipment described in circuit connection formation.
The detection method of described front of tunnel heading water temperature based on temperature field principle, described temperature transducer tube coupling includes sensor housing, sensor shell cap, sensor, sensor connects ring and sensor stand, in the middle part of sensor housing, endoporus is respectively arranged at two ends with sensor stand, it is provided with sensor between two sensors support, launch hole on the induction end respective sensor housing outer edge surface of described sensor 3, it is respectively arranged at two ends with sensor shell cap at sensor housing, it is respectively equipped with sensor on the lateral surface of described each sensor stand and connects ring, hip at sensor stand has wire casing.
The detection method of described front of tunnel heading water temperature based on temperature field principle, described sensor is non-contact infrared temperature sensor.
The detection method of described front of tunnel heading water temperature based on temperature field principle, described sensor stand is fixed bayonet socket by sensor stand and is arranged on the two ends of endoporus in the middle part of sensor housing, is provided with sensor seating groove in the inner side of sensor stand.
The detection method of described front of tunnel heading water temperature based on temperature field principle, described connection tube coupling includes connecting tube coupling housing, connecting tube coupling shell cap, tube coupling connection snap close and connect tube coupling support, passes through respectively at the two ends of described connection tube coupling housing central section endoporus
Connection tube coupling support is fixed bayonet socket and is provided with connection tube coupling support, wire casing is had at the hip connecting tube coupling support, it is respectively equipped with tube coupling in the outside connecting tube coupling support and connects snap close, form described connection tube coupling at the connection tube coupling shell cap that is respectively arranged at two ends with connecting tube coupling housing.
The detection method of described front of tunnel heading water temperature based on temperature field principle, the diameter of the gauge head of described temperature measuring equipment is less than the diameter treating gaging hole.
The detection method of described front of tunnel heading water temperature based on temperature field principle, the gauge head length of described temperature measuring equipment carries out length regulation according to the degree of depth of thermometer hole, and wherein in order to ensure certainty of measurement, gauge head length is more than 1m.
The detection method of described front of tunnel heading water temperature based on temperature field principle, a length of the 10～20cm of described temperature transducer tube coupling.
The detection method of described front of tunnel heading water temperature based on temperature field principle, a length of the 10～20cm of described connection tube coupling.
Using technical scheme as above, the present invention has a superiority as described below:
nullThe detection method of a kind of front of tunnel heading water temperature based on temperature field principle of the present invention，The present invention is by the temperature in the sensor measurement thermometer hole in temperature transducer tube coupling and then obtains desired data，Then the data analysis by recording goes out front of tunnel heading change of temperature field trend，Find out front of tunnel heading temperature anomaly region，And then judge front water body situation，Further，A plurality of temperature transducer tube coupling and a plurality of connection tube coupling is used to form gauge head，Wherein the connection of the sensor on temperature transducer tube coupling ring interlocks with the tube coupling connection snap close being connected on tube coupling，Make temperature transducer tube coupling and be connected tube coupling realization flexible connection，Substantially increase the motility of gauge head，The measurement apparatus simple in construction of the present invention，Easy to maintenance，Certainty of measurement is higher，Can the temperature data of one-shot measurement multiple some position，Multi-group data combination forms front of tunnel heading 3 D stereo temperature field，The front of tunnel heading water body position etc. relative to face can be accurately judged according to temperature field abnormal area，The present invention has simple to operate，Measure the features such as accurate，It is suitable for large-scale promotion and application.
[accompanying drawing explanation]
Fig. 1 is the structural representation of temperature transducer tube coupling in the present invention；
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1 of the present invention；
Fig. 3 is the structural representation connecting tube coupling in the present invention；
Fig. 4 is the B-B sectional structure schematic diagram of Fig. 3 of the present invention；
In the drawings: 1, sensor housing；2, sensor shell cap；3, sensor；4, sensor connects ring；5, launch hole；6, sensor stand；7, sensor stand fixes bayonet socket；8, sensor seating groove；9, wire casing；10, tube coupling housing is connected；11, tube coupling shell cap is connected；12, tube coupling connects snap close；13, tube coupling support is connected；14、
Connect tube coupling support and fix bayonet socket.
[detailed description of the invention]
The present invention can be explained in more detail by the following examples, the invention is not limited in the following examples；
In conjunction with the detection method of a kind of based on temperature field principle the front of tunnel heading water temperature described in accompanying drawing 1～4, described method specifically includes following steps:
One, perforate on face:
First holing on face or utilize existing big gun hole or geotechnical boring, the most some thermometer holes are evenly distributed on face as far as possible；
Two, the temperature in institute's perforate is measured:
Connect step, in the thermometer hole that the temperature transducer tube coupling a section insertion first step on temperature measuring equipment is obtained, after temperature transducer tube coupling reaches at the bottom of thermometer hole and intercepts the outer temperature interference of face, measure the temperature of thermometer hole sidewall, then from face to recording one group of data at the bottom of thermometer hole, then pull out temperature transducer tube coupling, select next thermometer hole to carry out data acquisition；
Three, data process&analysis:
Connect step, the thermometer hole that one group of data show from face to the temperature gradient curve at the bottom of thermometer hole, multi-group data is shown that the space temperature field of front of tunnel heading certain area, according to front of tunnel heading change of temperature field trend, find out front of tunnel heading temperature anomaly region, and then judge front water body situation.
Wherein temperature measuring equipment described in second step includes gauge head and temperature measurer, and the diameter of the gauge head of described temperature measuring equipment is less than the diameter treating gaging hole；The gauge head length of described temperature measuring equipment carries out length regulation according to the degree of depth of thermometer hole, and wherein in order to ensure certainty of measurement, gauge head length is more than 1m；nullDescribed temperature measurer connects gauge head by circuit，Described gauge head includes a plurality of temperature transducer tube coupling and a plurality of connection tube coupling，A length of the 10～20cm of described temperature transducer tube coupling，A length of the 10～20cm of described connection tube coupling，Described temperature transducer tube coupling includes sensor housing 1、Sensor shell cap 2、Sensor 3、Sensor connects ring 4 and sensor stand 6，In the middle part of sensor housing 1, endoporus is respectively arranged at two ends with sensor stand 6，Described sensor stand 6 is fixed bayonet socket 7 by sensor stand and is arranged on the two ends of endoporus in the middle part of sensor housing 1，It is provided with sensor seating groove 8 in the inner side of sensor stand 6，Sensor 3 it is provided with between two sensors support 6，Described sensor 3 is non-contact infrared temperature sensor，Launch hole 5 on induction end respective sensor housing 1 outer edge surface of described sensor 3，When reality is applied by launch hole 5，Non-contact infrared temperature sensor 3 receives infra-red radiation，Indirectly measure the temperature of irradiating infrared light object；Being respectively arranged at two ends with sensor shell cap 2 at sensor housing 1, wherein sensor housing 1 and sensor shell cap 2 are connected by specifying draw-in groove to insert, and to side, rotational lock is fixed；It is respectively equipped with sensor on the lateral surface of described each sensor stand 6 and connects ring 4, owing to being that multiple temperature transducer tube coupling connects, be provided with wire casing 9, the i.e. hip at sensor stand 6 inside temperature transducer tube coupling and have wire casing 9；Described connection tube coupling includes connecting tube coupling housing 10, connecting tube coupling shell cap 11, tube coupling connection snap close 12 and connect tube coupling support 13, and in the middle part of described connection tube coupling housing 10, the two ends of endoporus are passed through respectively
Connection tube coupling support is fixed bayonet socket 14 and is provided with connection tube coupling support 13, owing to being the connection of multiple connection tube coupling, connect and be provided with wire casing 9 inside tube coupling, i.e. have wire casing 9 at the hip connecting tube coupling support 13, it is respectively equipped with tube coupling in the outside connecting tube coupling support 13 and connects snap close 12, described connection tube coupling is formed at the connection tube coupling shell cap 11 that is respectively arranged at two ends with connecting tube coupling housing 10, wherein connecting tube coupling housing 10 and being connected tube coupling shell cap 11 is also that to side, rotational lock is fixed by specifying draw-in groove to insert connection；Between each two temperature transducer tube coupling, it is respectively equipped with one connects tube coupling, described each two temperature transducer tube coupling is connected by circuit, wherein sensor stand 6 is respectively equipped with sensor connection ring 4 with the outside being connected tube coupling support 13 and tube coupling connects snap close 12, and both interlock and realize temperature transducer tube coupling and connect the attended operation of tube coupling；Sensor stand fix bayonet socket 7 and
Connect tube coupling support fixing bayonet socket 14 is U-type groove, and sensor stand 6 and connection tube coupling support 13 are sealed U-type groove opening formed described temperature measuring equipment by sensor shell cap 2 and connection tube coupling shell cap 11 after inserting.
The present invention is in specific implementation process, utilize face big gun hole or geotechnical boring as treating gaging hole, then temperature transducer tube coupling one is saved in deeply treating gaging hole, after temperature transducer tube coupling reaches at the bottom of hole, carry out one group of temperature acquisition, until data no longer change；Wherein the principle of measurement apparatus is: utilize big gun hole or geotechnical boring to be inserted into temperature transducer tube coupling at face, after intercepting the outer temperature interference of face, gaging hole side wall temperatures is treated in measurement, from face to recording one group of data at the bottom of hole, multiple holes record organizes temperature measurement data more, obtain front of tunnel heading Three-dimensional Rock solid thermo parameters method situation after comprehensive comparative analysis, thus lock front of tunnel heading abnormal area；Temperature measuring equipment in the present invention uses that Non-contacting Infrared Thermometer is hinged with temperature transducer tube coupling to be combined, overall length is up to 5m, each long 15cm of thermometric tube coupling, connect the long 15cm of tube coupling, diameter is 4cm, and less than geotechnical boring and big gun hole, temperature transducer tube coupling is hinged detachably, to adapt to the requirement of different length boring, the temperature measurement accuracy of temperature transducer tube coupling is improved to meet temperature gradient in the range of measuring to be more than its precision.
The present invention should be noted following item in the specific implementation:
1, determine face bore position and the degree of depth: use existing boring for reducing execute-in-place burden as far as possible, such as big gun hole, geotechnical boring etc., and guarantee that bore diameter is more than thermometric tube coupling and connects tube coupling diameter, boring is laid spacing 1m and is advisable, specific implementation process suitably adjusts with actual face drilling situation, after boring terminates, insert the sensors into as early as possible in boring, reduce the heat exchange interference to gathering data；
The impurity interference to equipment such as 2, being saved by temperature transducer tube coupling one and insert in existing boring carefully, suitably reversed torsion pull advances, it is therefore intended that make sensor aperture the most corresponding with scar, minimizing particle；At bore entrance, insert temperature insulating material, block the face external world thermal convection current interference to bore inner；Turning on the power, several groups of data of preliminary survey, wait surveyed data stabilization laggard row data acquiring and recording, the collecting efficiency of valid data is closely bound up with extraneous thermal convection current and boring procedure；Close power supply, extract repeatably temperature insulating material and sensor out；Select next gaging hole to carry out data acquisition, repeat said process；
3, Data Management Analysis: each gaging hole is numbered, one group of data show a gaging hole from face to the temperature gradient curve in boring deep, the space temperature field distribution situation of multi-group data display front of tunnel heading certain area.According to front of tunnel heading space temperature field variation tendency, find front of tunnel heading temperature anomaly region, and then judge that front is with or without water body situation.
Part not in the detailed description of the invention is prior art.
The embodiment selected in this article for the open purpose of the present invention, it is suitable to be presently considered to be, however, it should be understood that, it is contemplated that include that all belong to all changes of this design and the embodiment in invention scope and improvement.
Claims (10)
1. a detection method for front of tunnel heading water temperature based on temperature field principle, is characterized in that: described method specifically includes following steps:
One, perforate on face:
First holing on face or utilize existing big gun hole or geotechnical boring, the most some thermometer holes are evenly distributed on face as far as possible；
Two, the temperature in institute's perforate is measured:
Connect step, in the thermometer hole that the temperature transducer tube coupling a section insertion first step on temperature measuring equipment is obtained, after temperature transducer tube coupling reaches at the bottom of thermometer hole and intercepts the outer temperature interference of face, measure the temperature of thermometer hole sidewall, then from face to recording one group of data at the bottom of thermometer hole, then pull out temperature transducer tube coupling, select next thermometer hole to carry out data acquisition；
Three, data process&analysis:
Connect step, the thermometer hole that one group of data show from face to the temperature gradient curve at the bottom of thermometer hole, multi-group data is shown that the space temperature field of front of tunnel heading certain area, according to front of tunnel heading change of temperature field trend, find out front of tunnel heading temperature anomaly region, and then judge front water body situation.
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 1, it is characterized in that: described temperature measuring equipment includes gauge head and temperature measurer, described temperature measurer connects gauge head by circuit, described gauge head includes a plurality of temperature transducer tube coupling and a plurality of connection tube coupling, being respectively equipped with one between each two temperature transducer tube coupling and connect tube coupling, described each two temperature transducer tube coupling is by the temperature measuring equipment described in circuit connection formation.
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 2, it is characterized in that: described temperature transducer tube coupling includes sensor housing (1), sensor shell cap (2), sensor (3), sensor connects ring (4) and sensor stand (6), in the middle part of sensor housing (1), endoporus is respectively arranged at two ends with sensor stand (6), sensor (3) it is provided with between two sensors support (6), launch hole (5) on induction end respective sensor housing (1) outer edge surface of described sensor (3), it is respectively arranged at two ends with sensor shell cap (2) at sensor housing (1), it is respectively equipped with sensor on the lateral surface of described each sensor stand (6) and connects ring (4), hip at sensor stand (6) has wire casing (9).
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 3, is characterized in that: described sensor (3) is non-contact infrared temperature sensor.
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 3, it is characterized in that: described sensor stand (6) is fixed bayonet socket (7) by sensor stand and is arranged on the two ends of sensor housing (1) middle part endoporus, is provided with sensor seating groove (8) in the inner side of sensor stand (6).
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 2, it is characterized in that: described connection tube coupling includes connecting tube coupling housing (10), connect tube coupling shell cap (11), tube coupling connects snap close (12) and connects tube coupling support (13), fix bayonet socket (14) by connection tube coupling support respectively at the two ends of described connection tube coupling housing (10) middle part endoporus and be provided with connection tube coupling support (13), wire casing (9) is had at the hip connecting tube coupling support (13), it is respectively equipped with tube coupling in the outside connecting tube coupling support (13) and connects snap close (12), connect tube coupling housing (10) be respectively arranged at two ends with connect tube coupling shell cap (11) formed described in connection tube coupling.
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 2, is characterized in that: the diameter of the gauge head of described temperature measuring equipment is less than the diameter treating gaging hole.
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 2, it is characterized in that: the gauge head length of described temperature measuring equipment carries out length regulation according to the degree of depth of thermometer hole, wherein in order to ensure certainty of measurement, gauge head length is more than 1m.
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 2, is characterized in that: a length of the 10～20cm of described temperature transducer tube coupling.
The detection method of front of tunnel heading water temperature based on temperature field principle the most according to claim 2, is characterized in that: a length of the 10～20cm of described connection tube coupling.
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