CN104213907A - 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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- CN104213907A CN104213907A CN201410416806.9A CN201410416806A CN104213907A CN 104213907 A CN104213907 A CN 104213907A CN 201410416806 A CN201410416806 A CN 201410416806A CN 104213907 A CN104213907 A CN 104213907A
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- tunnel heading
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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 a kind of detection method of water temperature, particularly relate to a kind of detection method of moisture rock mass internal temperature, be specifically related to a kind of detection method of the front of tunnel heading water temperature based on thermal field principle.
[background technology]
Known, in constructing tunnel process, in order to ensure the accuracy of tunnel tunnel face front water body prediction, the physical prospecting equipment such as general employing TGP, geological radar, transient electromagnetic method carry out comprehensive forecasting, wherein Shandong University " based on rock temperature field underground construction water content structure forecast system and method ", it is on the basis of feasibility having expounded the forecast of Geothermal method constructing tunnel water burst adequately, have developed RTP temperature method geological prediction system, and this equipment exists many deficiencies, specific as follows:
1. the interpretation result for front of tunnel heading water body existence is the same with other complex geophysical prospecting equipment, are all distances that distance face is described, and the particular location of face cannot accurately judge relatively;
2. start to extract temperature measurement data after after boring imbedded by temperature element, 24h fixed by note mortar, because abutment wall reflects the consideration lacked about the factor such as heat transfer, heat convection in the thermal field of Time and place to water body near face, and differ from away from side wall temperatures near side-walls temperature, measurement result is under suspicion;
3. the precision of detecting devices is very important etc. for the impact of temperature variation curve variable quantity.
A kind of detection method of efficient measurement front of tunnel heading water temperature so how is provided just to have become the long-term technology demand of those skilled in the art.
[summary of the invention]
For overcoming the deficiency existed in background technology, the invention provides a kind of detection method of the front of tunnel heading water temperature based on thermal field principle, the present invention is by the sensor measurement thermometric temperature in borehole in temperature transducer tube coupling and then obtain 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 position of front water body relative to face, further, sensor connecting ring on temperature transducer tube coupling and the tube coupling be connected on tube coupling are connected snap close interlock, make temperature transducer tube coupling and be connected tube coupling and realize being flexibly connected, substantially increase the flexibility 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 adopts technical scheme as described below:
Based on a detection method for the front of tunnel heading water temperature of thermal field principle, described method specifically comprises the steps:
One, perforate on face:
First hole on face or utilize existing big gun hole or geotechnical boring, wherein 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 a section for temperature transducer tube coupling on the temperature measuring equipment insertion first step is obtained, after temperature transducer tube coupling to reach at the bottom of thermometer hole and intercepts the outer temperature interference of face, the temperature of thermometer hole sidewall, then one group of data is recorded at the bottom of from face to thermometer hole, then extract temperature transducer tube coupling out, select next thermometer hole to carry out data acquisition;
Three, data process&analysis:
Connect step, the temperature gradient curve of a thermometer hole at the bottom of from face to thermometer hole of one group of data display, multi-group data display be 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 the described front of tunnel heading water temperature based on thermal field principle, described temperature measuring equipment comprises gauge head and temperature measurer, described temperature measurer is communicated with gauge head by circuit, described gauge head comprises a plurality of temperature transducer tube coupling and a plurality of connection tube coupling, between every two temperature transducer tube couplings, be respectively equipped with one connect tube coupling, described every two temperature transducer tube couplings are communicated with the temperature measuring equipment described in being formed by circuit.
The detection method of the described front of tunnel heading water temperature based on thermal field principle, described temperature transducer tube coupling comprises sensor housing, sensor shell cap, sensor, sensor connecting ring and sensor stand, in the middle part of sensor housing, the two ends of endoporus are respectively equipped with sensor stand, sensor is provided with between two sensors support, launch hole on the induction end respective sensor housing outer edge surface of described sensor 3, sensor shell cap is respectively equipped with at the two ends of sensor housing, the lateral surface of described each sensor stand is respectively equipped with sensor connecting ring, wire casing is had at the hip of sensor stand.
The detection method of the described front of tunnel heading water temperature based on thermal field principle, described sensor is non-contact infrared temperature pick up.
The detection method of the described front of tunnel heading water temperature based on thermal field principle, described sensor stand fixes by sensor stand the two ends that bayonet socket is arranged on 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 the described front of tunnel heading water temperature based on thermal field principle, described connection tube coupling comprises and connects tube coupling housing, connection tube coupling shell cap, tube coupling connection snap close and be connected tube coupling support, fix bayonet socket at the two ends of described connection tube coupling housing central section endoporus respectively by connection knuckle support and be provided with connection tube coupling support, wire casing is had at the hip connecting tube coupling support, be respectively equipped with tube coupling in the outside connecting tube coupling support and connect snap close, be respectively equipped with connection tube coupling shell cap at the two ends connecting tube coupling housing and form described connection tube coupling.
The detection method of the described front of tunnel heading water temperature based on thermal 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 the described front of tunnel heading water temperature based on thermal field principle, the gauge head length of described temperature measuring equipment carries out length adjustment according to the degree of depth of thermometer hole, and wherein in order to ensure certainty of measurement, gauge head length is greater than 1m.
The detection method of the described front of tunnel heading water temperature based on thermal field principle, the length of described temperature transducer tube coupling is 10 ~ 20cm.
The detection method of the described front of tunnel heading water temperature based on thermal field principle, the length of described connection tube coupling is 10 ~ 20cm.
Adopt technical scheme as above, the present invention has superiority as described below:
The detection method of a kind of front of tunnel heading water temperature based on thermal 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 obtain 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 adopted to form gauge head, sensor connecting ring wherein on temperature transducer tube coupling and the tube coupling be connected on tube coupling connect snap close and interlock, make temperature transducer tube coupling and be connected tube coupling and realize being flexibly connected, substantially increase the flexibility of gauge head, measurement mechanism structure of the present invention is simple, easy to maintenance, certainty of measurement is higher, can the temperature data of one-shot measurement multiple some position, multi-group data is combined to form front of tunnel heading 3 D stereo thermal field, the position etc. of front of tunnel heading water body relative to face accurately can be judged according to thermal field abnormal area, the present invention has simple to operate, measure the features such as accurate, be applicable to 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 connecting 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 knuckle support and fix bayonet socket.
[detailed description of the invention]
Can explain the present invention in more detail by the following examples, the present invention is not limited to the following examples;
The detection method of a kind of front of tunnel heading water temperature based on thermal field principle by reference to the accompanying drawings described in 1 ~ 4, described method specifically comprises the steps:
One, perforate on face:
First hole on face or utilize existing big gun hole or geotechnical boring, wherein 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 a section for temperature transducer tube coupling on the temperature measuring equipment insertion first step is obtained, after temperature transducer tube coupling to reach at the bottom of thermometer hole and intercepts the outer temperature interference of face, the temperature of thermometer hole sidewall, then one group of data is recorded at the bottom of from face to thermometer hole, then extract temperature transducer tube coupling out, select next thermometer hole to carry out data acquisition;
Three, data process&analysis:
Connect step, the temperature gradient curve of a thermometer hole at the bottom of from face to thermometer hole of one group of data display, multi-group data display be 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 comprises 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 adjustment according to the degree of depth of thermometer hole, and wherein in order to ensure certainty of measurement, gauge head length is greater than 1m, described temperature measurer is communicated with gauge head by circuit, described gauge head comprises a plurality of temperature transducer tube coupling and a plurality of connection tube coupling, the length of described temperature transducer tube coupling is 10 ~ 20cm, the length of described connection tube coupling is 10 ~ 20cm, described temperature transducer tube coupling comprises sensor housing 1, sensor shell cap 2, sensor 3, sensor connecting ring 4 and sensor stand 6, in the middle part of sensor housing 1, the two ends of endoporus are respectively equipped with sensor stand 6, described sensor stand 6 fixes by sensor stand the two ends that bayonet socket 7 is arranged on endoporus in the middle part of sensor housing 1, sensor seating groove 8 is provided with in the inner side of sensor stand 6, sensor 3 is provided with between two sensors support 6, described sensor 3 is non-contact infrared temperature pick up, launch hole 5 on induction end respective sensor housing 1 outer edge surface of described sensor 3, when practical application by launch hole 5, non-contact infrared temperature pick up 3 receives infrared radiation, the indirectly temperature of measuring radiation infrared light object, be respectively equipped with sensor shell cap 2 at the two ends of sensor housing 1, wherein sensor housing 1 is connected by specifying draw-in groove to insert with sensor shell cap 2, fixes to side rotational lock, the lateral surface of described each sensor stand 6 is respectively equipped with sensor connecting ring 4, and owing to being that multiple temperature transducer tube coupling connects, temperature transducer tube coupling inside is provided with wire casing 9, namely has wire casing 9 at the hip of sensor stand 6, described connection tube coupling comprises and connects tube coupling housing 10, connect tube coupling shell cap 11, tube coupling connects snap close 12 and is connected tube coupling support 13, in the middle part of described connection tube coupling housing 10, the two ends of endoporus are fixed bayonet socket 14 respectively by connection knuckle support and are provided with connection tube coupling support 13, owing to being the connection of multiple connection tube coupling, connect tube coupling inside and be provided with wire casing 9, namely wire casing 9 is had at the hip connecting tube coupling support 13, be respectively equipped with tube coupling in the outside connecting tube coupling support 13 and connect snap close 12, be respectively equipped with connection tube coupling shell cap 11 at the two ends connecting tube coupling housing 10 and form described connection tube coupling, wherein connecting tube coupling housing 10 is also connect by specifying draw-in groove to insert with being connected tube coupling shell cap 11, fix to side rotational lock, between every two temperature transducer tube couplings, be respectively equipped with one connect tube coupling, described every two temperature transducer tube couplings are communicated with by circuit, wherein sensor stand 6 is respectively equipped with sensor connecting 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 the attended operation being connected tube coupling, sensor stand is fixed bayonet socket 7 and is connected knuckle support and fixes bayonet socket 14 for U-type groove, sensor stand 6 and after being connected tube coupling support 13 insertion by sensor shell cap 2 be connected tube coupling shell cap 11 and seal U-type groove opening and form described temperature measuring equipment.
The present invention is in specific implementation process, utilize face big gun hole or geotechnical boring as treating gaging hole, then being saved by temperature transducer tube coupling one deeply treats in gaging hole, reaches after at the bottom of hole carry out one group of temperature acquisition, until data no longer change until temperature transducer tube coupling; Wherein the principle of measurement mechanism is: utilize in big gun hole or geotechnical boring at face and insert temperature transducer tube coupling, after the outer temperature interference of obstruct face, gaging hole side wall temperatures is treated in measurement, one group of data is recorded at the bottom of from face to hole, multiple hole records organizes temperature measurement data more, the three-dimensional thermo parameters method situation of front of tunnel heading Three-dimensional Rock is obtained after comprehensive comparative analysis, thus locking front of tunnel heading abnormal area; Temperature measuring equipment in the present invention adopts Non-contacting Infrared Thermometer and temperature transducer tube coupling is hinged combines, overall length Ke Da 5m, the long 15cm of each thermometric tube coupling, connect the long 15cm of tube coupling, diameter is 4cm, and be less than geotechnical boring and big gun hole, temperature transducer tube coupling is detachably hinged, 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 measurement category being greater 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, as big gun hole, geotechnical boring etc., and guarantee that bore diameter is greater than thermometric tube coupling and connects tube coupling diameter, boring is laid spacing 1m and is advisable, suitably adjust with actual face drilling situation in specific implementation process, after boring terminates, as early as possible sensor is inserted in boring, reduce interchange of heat to the interference of image data;
The impurity such as 2, saved by temperature transducer tube coupling one and insert in existing boring carefully, suitably reversed torsion pull advances, and it is fully corresponding that object is to make sensor aperture and scar, minimizing particle are to the interference of equipment; Insert temperature insulating material at bore entrance place, block the extraneous thermal convection current of face to the interference of bore inner; Opening power, preliminary survey several groups of data, wait the laggard row data acquiring and recording of surveyed data stabilization, the collecting efficiency of valid data and extraneous thermal convection current and boring procedure closely bound up; Powered-down, extracts 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 shows 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 in order to open object of the present invention, currently thinks to be suitable for, but it is to be understood that the present invention is intended to comprise all changes belonging to the embodiment in this design and invention scope and improvement.
Claims (10)
1. based on a detection method for the front of tunnel heading water temperature of thermal field principle, it is characterized in that: described method specifically comprises the steps:
One, perforate on face:
First hole on face or utilize existing big gun hole or geotechnical boring, wherein 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 a section for temperature transducer tube coupling on the temperature measuring equipment insertion first step is obtained, after temperature transducer tube coupling to reach at the bottom of thermometer hole and intercepts the outer temperature interference of face, the temperature of thermometer hole sidewall, then one group of data is recorded at the bottom of from face to thermometer hole, then extract temperature transducer tube coupling out, select next thermometer hole to carry out data acquisition;
Three, data process&analysis:
Connect step, the temperature gradient curve of a thermometer hole at the bottom of from face to thermometer hole of one group of data display, multi-group data display be 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.
2. the detection method of the front of tunnel heading water temperature based on thermal field principle according to claim 1, it is characterized in that: described temperature measuring equipment comprises gauge head and temperature measurer, described temperature measurer is communicated with gauge head by circuit, described gauge head comprises a plurality of temperature transducer tube coupling and a plurality of connection tube coupling, between every two temperature transducer tube couplings, be respectively equipped with one connect tube coupling, described every two temperature transducer tube couplings are communicated with the temperature measuring equipment described in being formed by circuit.
3. the detection method of the front of tunnel heading water temperature based on thermal field principle according to claim 2, it is characterized in that: described temperature transducer tube coupling comprises sensor housing (1), sensor shell cap (2), sensor (3), sensor connecting ring (4) and sensor stand (6), sensor stand (6) is respectively equipped with at the two ends of sensor housing (1) middle part endoporus, sensor (3) 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), sensor shell cap (2) is respectively equipped with at the two ends of sensor housing (1), the lateral surface of described each sensor stand (6) is respectively equipped with sensor connecting ring (4), wire casing (9) is had at the hip of sensor stand (6).
4. the detection method of the front of tunnel heading water temperature based on thermal field principle according to claim 3, is characterized in that: described sensor (3) is non-contact infrared temperature pick up.
5. the detection method of the front of tunnel heading water temperature based on thermal field principle according to claim 3, it is characterized in that: described sensor stand (6) fixes by sensor stand the two ends that bayonet socket (7) is arranged on sensor housing (1) middle part endoporus, is provided with sensor seating groove (8) in the inner side of sensor stand (6).
6. the detection method of the front of tunnel heading water temperature based on thermal field principle according to claim 2, it is characterized in that: described connection tube coupling comprises and connects tube coupling housing (10), connect tube coupling shell cap (11), tube coupling connects snap close (12) and is connected tube coupling support (13), fix bayonet socket (14) at the two ends of described connection tube coupling housing (10) middle part endoporus respectively by connection knuckle support and be provided with connection tube coupling support (13), wire casing (9) is had at the hip connecting tube coupling support (13), be respectively equipped with tube coupling in the outside connecting tube coupling support (13) and connect snap close (12), the connection tube coupling connected described in tube coupling shell cap (11) formation is respectively equipped with at the two ends connecting tube coupling housing (10).
7. the detection method of the front of tunnel heading water temperature based on thermal field principle 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.
8. the detection method of the front of tunnel heading water temperature based on thermal field principle according to claim 2, it is characterized in that: the gauge head length of described temperature measuring equipment carries out length adjustment according to the degree of depth of thermometer hole, wherein in order to ensure certainty of measurement, gauge head length is greater than 1m.
9. the detection method of the front of tunnel heading water temperature based on thermal field principle according to claim 2, is characterized in that: the length of described temperature transducer tube coupling is 10 ~ 20cm.
10. the detection method of the front of tunnel heading water temperature based on thermal field principle according to claim 2, is characterized in that: the length of described connection tube coupling is 10 ~ 20cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410416806.9A CN104213907B (en) | 2014-08-22 | 2014-08-22 | Method for detecting temperature of water body in front of tunnel face on basis of temperature field principle |
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2014
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| CN101183155A (en) * | 2007-11-14 | 2008-05-21 | 山东大学 | Tunnel tunnel face front exploring water inductor |
| CN101298840A (en) * | 2008-06-25 | 2008-11-05 | 中铁西南科学研究院有限公司 | Method for forecasting tunnel construction tunnel face front water burst position |
| JP5208670B2 (en) * | 2008-10-24 | 2013-06-12 | 鹿島建設株式会社 | Groundwater state evaluation system and groundwater state evaluation method |
| CN103018787A (en) * | 2012-12-03 | 2013-04-03 | 山东大学 | Rock mass temperature detecting system for forecasting of water-bearing structures |
| CN202939319U (en) * | 2012-12-14 | 2013-05-15 | 中铁西南科学研究院有限公司 | Geology forecast instrument |
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