CN107144593B - Detector and detection method for freezing depth in tunnel in cold region - Google Patents
Detector and detection method for freezing depth in tunnel in cold region Download PDFInfo
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- CN107144593B CN107144593B CN201710404380.9A CN201710404380A CN107144593B CN 107144593 B CN107144593 B CN 107144593B CN 201710404380 A CN201710404380 A CN 201710404380A CN 107144593 B CN107144593 B CN 107144593B
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- lifting device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
Abstract
The invention provides a detector for the freezing depth in a tunnel in a cold region, which comprises: a support; the lifting device comprises a cylinder and a telescopic shaft, and a connecting seat is fixed at the tail end of the lifting device; the frozen soil digging device comprises a motor fixedly arranged on the lower surface of the connecting seat and a rotating piece connected with the output end of the motor; the temperature sensors and the connecting seat are positioned on the same horizontal plane; the displacement sensor is arranged on the connecting seat; and the controller receives the temperature value sent by the temperature sensor and the displacement value sent by the displacement sensor, and takes the detection depth of the first detection of the average temperature value in the preset range as the current position frozen soil depth when the average temperature value in the ten continuous detection results is in the preset range. The invention also provides a method for detecting the freezing depth in the tunnel in the cold region, which can accurately detect the freezing depth in the tunnel in the cold region, has accurate detection result and provides basic data for subsequent work.
Description
Technical Field
The invention belongs to the field of tunnels, and particularly relates to a detector and a detection method for the freezing depth in a tunnel in a cold region.
Background
During the construction of severe cold areas, the construction of tunnels is often required, frozen soil exists in severe cold areas throughout the year, the smooth proceeding of engineering is not facilitated, and the detection of freezing depth is required to facilitate the subsequent work.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention provides a detector for the freezing depth in a tunnel in a cold region, which comprises:
the bracket is fixed on the ground in the cold region tunnel, and a cylindrical shell is arranged outside the bracket;
the lifting device comprises an air cylinder fixed on the lower surface of the support and a telescopic shaft connected to the output end of the air cylinder, and a connecting seat is fixed at the tail end of the telescopic shaft;
the frozen soil digging device comprises a motor fixedly arranged on the lower surface of the connecting seat and a rotating piece connected with the output end of the motor, wherein the edge of the connecting seat is bent upwards to form a cylindrical protective cover, and the cylindrical protective cover is connected with the cylindrical shell through at least two connecting ribs;
the temperature sensors are arranged on the outer side surface of the cylindrical shell and are positioned on the same horizontal plane with the connecting seat;
a displacement sensor disposed on the connection seat;
and the controller is electrically connected with the air cylinder and the motor, receives the temperature values sent by the temperature sensors and the displacement values sent by the displacement sensors, calculates the current detection depth according to the distance between the preset connecting seat and the ground, calculates the average temperature value of the current depth according to the temperature values sent by the plurality of temperature sensors, binds and stores the current depth and the average temperature value of the current depth as the detection result of the time, and takes the detection depth where the average temperature value in the preset range is detected for the first time as the frozen soil depth of the current position when the average temperature value in the preset range is detected for the first time when the average temperature value in the ten continuous detection results is in the preset range.
Preferably, in the detector for the freezing depth in the tunnel cave in the cold region, the cylindrical protective cover can be folded, and the upper end of the cylindrical protective cover is fixed with the bracket and is arranged in a sealing manner.
Preferably, in the detector for detecting the freezing depth in the tunnel in the cold region, more than two cylinders run synchronously.
Preferably, in the detector for detecting the freezing depth in the tunnel in the cold region, the controller drives the lifting device to move, receives the displacement value sent by the displacement sensor, compares the displacement value with the displacement value sent from the previous time, controls the lifting device to stop working and start the temperature sensor when the difference value between the displacement value and the displacement value is equal to a preset distance value, and drives the lifting device to move again after an interval of 10 s.
The invention also provides a method for detecting the freezing depth in the tunnel in the cold region, which comprises the following steps:
fixing the support on the ground in the tunnel in the cold region, and keeping the support parallel to the ground;
a lifting device with a connecting seat is arranged below the bracket, the cylindrical shell is fixed on the connecting seat through a connecting rib, a temperature sensor is fixed on the outer side surface of the cylindrical shell, and a displacement sensor is arranged on the connecting seat;
fixing the frozen soil digging device below the connecting seat;
measuring the distance between the connecting seat and the ground at the current moment, presetting the temperature value range of a constant temperature layer and setting the detection distance interval;
and the controller controls the lifting device to move downwards, starts detection, and when the average temperature value in the ten continuous detection results is in a preset range, the detection depth at which the average temperature value in the preset range is detected for the first time is used as the depth of the frozen soil at the current position, the detection is finished, and the controller controls the lifting device to move upwards to the initial position.
The invention provides a detector and a detection method for the freezing depth in a tunnel hole in a cold region, which can accurately detect the freezing depth in the tunnel hole in the cold region, have accurate detection results and provide basic data for subsequent work.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a freeze depth detector in a tunnel in a cold region provided by the invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1, the present invention provides a freezing depth detector in a tunnel in a cold region, which comprises:
the support 1 is fixed on the ground in the tunnel in the cold region, and a cylindrical shell 2 is covered outside the support 1;
the lifting device 3 comprises an air cylinder fixed on the lower surface of the support 1 and a telescopic shaft connected to the output end of the air cylinder, and a connecting seat 4 is fixed at the tail end of the telescopic shaft;
the frozen soil digging device 5 comprises a motor fixedly arranged on the lower surface of the connecting seat 4 and a rotating part connected with the output end of the motor, wherein the edge of the connecting seat 4 is bent upwards to form a cylindrical protective cover 6, and the cylindrical protective cover 6 is connected with the cylindrical shell 2 through at least two connecting ribs;
a plurality of temperature sensors 8 which are arranged on the outer side surface of the cylindrical shell 2 and are positioned on the same horizontal plane with the connecting seat 4;
a displacement sensor 7 provided on the connection holder 4;
and the controller is electrically connected with the air cylinder and the motor, receives the temperature values sent by the temperature sensors 8 and the displacement values sent by the displacement sensors 7, calculates the current detection depth according to the preset distance between the connecting seat 4 and the ground, calculates the current depth average temperature value according to the temperature values sent by the temperature sensors 8, binds and stores the current depth and the current depth average temperature value as the current detection result, and takes the detection depth where the average temperature value in the preset range is detected for the first time as the current position frozen soil depth when the average temperature value in the ten continuous detection results is in the preset range.
In the detector for the freezing depth in the tunnel hole in the cold region, the cylindrical protective cover 6 is foldable, and the upper end of the cylindrical protective cover is fixed and sealed with the support 1.
In the detector for the freezing depth in the tunnel in the cold region, more than two cylinders run synchronously.
In the detector for the freezing depth in the tunnel in the cold region, the controller drives the lifting device to move, receives the displacement value sent by the displacement sensor, compares the displacement value with the displacement value sent from the previous time, controls the lifting device to stop working and simultaneously starts the temperature sensor when the difference value between the two displacement values is equal to a preset distance value, and drives the lifting device to move again after the interval is 10 s.
The invention also provides a method for detecting the freezing depth in the tunnel in the cold region, which comprises the following steps:
fixing the support on the ground in the tunnel in the cold region, and keeping the support parallel to the ground;
a lifting device with a connecting seat is arranged below the bracket, the cylindrical shell is fixed on the connecting seat through a connecting rib, a temperature sensor is fixed on the outer side surface of the cylindrical shell, and a displacement sensor is arranged on the connecting seat;
fixing the frozen soil digging device below the connecting seat;
measuring the distance between the connecting seat and the ground at the current moment, presetting the temperature value range of a constant temperature layer and setting the detection distance interval;
and the controller controls the lifting device to move downwards, starts detection, and when the average temperature value in the ten continuous detection results is in a preset range, the detection depth at which the average temperature value in the preset range is detected for the first time is used as the depth of the frozen soil at the current position, the detection is finished, and the controller controls the lifting device to move upwards to the initial position.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (2)
1. Deep detector freezes in cold district tunnel hole, its characterized in that includes:
the bracket is fixed on the ground in the cold region tunnel, and a cylindrical shell is arranged outside the bracket;
the lifting device comprises an air cylinder fixed on the lower surface of the support and a telescopic shaft connected to the output end of the air cylinder, and a connecting seat is fixed at the tail end of the telescopic shaft;
the frozen soil digging device comprises a motor fixedly arranged on the lower surface of the connecting seat and a rotating piece connected with the output end of the motor, wherein the edge of the connecting seat is bent upwards to form a cylindrical protective cover, and the cylindrical protective cover is connected with the cylindrical shell through at least two connecting ribs;
the temperature sensors are arranged on the outer side surface of the cylindrical shell and are positioned on the same horizontal plane with the connecting seat;
a displacement sensor disposed on the connection seat;
the controller is electrically connected with the air cylinder and the motor, receives temperature values sent by the temperature sensors and displacement values sent by the displacement sensors, calculates the current detection depth according to the distance between a preset connecting seat and the ground, calculates the current depth average temperature value according to the temperature values sent by the temperature sensors, binds and stores the current depth and the current depth average temperature value as the current detection result, and takes the detection depth where the average temperature value in the preset range is detected for the first time as the frozen soil depth of the current position when the average temperature value in the ten continuous detection results is in the preset range;
wherein the content of the first and second substances,
the cylindrical protective cover can be folded, the upper end of the cylindrical protective cover is fixed with the bracket and is arranged in a sealing manner;
the number of the cylinders is more than two, and the cylinders synchronously operate;
and the controller drives the lifting device to move, receives the displacement value sent by the displacement sensor, compares the displacement value with the displacement value sent from the previous time, controls the lifting device to stop working and simultaneously starts the temperature sensor when the difference value between the two displacement values is equal to a preset distance value, and drives the lifting device to move again after an interval of 10 s.
2. The cold region tunnel in-hole freezing depth detection method based on the cold region tunnel in-hole freezing depth detector of claim 1 is characterized by comprising the following steps:
fixing the support on the ground in the tunnel in the cold region, and keeping the support parallel to the ground;
a lifting device with a connecting seat is arranged below the bracket, the cylindrical shell is fixed on the connecting seat through a connecting rib, a temperature sensor is fixed on the outer side surface of the cylindrical shell, and a displacement sensor is arranged on the connecting seat;
fixing the frozen soil digging device below the connecting seat;
measuring the distance between the connecting seat and the ground at the current moment, presetting the temperature value range of a constant temperature layer and setting the detection distance interval;
and the controller controls the lifting device to move downwards, starts detection, and when the average temperature value in the ten continuous detection results is in a preset range, the detection depth at which the average temperature value in the preset range is detected for the first time is used as the depth of the frozen soil at the current position, the detection is finished, and the controller controls the lifting device to move upwards to the initial position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404380.9A CN107144593B (en) | 2017-06-01 | 2017-06-01 | Detector and detection method for freezing depth in tunnel in cold region |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710404380.9A CN107144593B (en) | 2017-06-01 | 2017-06-01 | Detector and detection method for freezing depth in tunnel in cold region |
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| CN107144593A CN107144593A (en) | 2017-09-08 |
| CN107144593B true CN107144593B (en) | 2020-09-08 |
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| CN109932386B (en) * | 2019-04-03 | 2021-06-15 | 广东诺登机电工程有限公司 | Method for monitoring freezing process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626898A (en) * | 1991-11-28 | 1994-02-04 | J Jiii Tex Kk | Sensor for detecting moisture and temperature in soil |
| CN202511782U (en) * | 2012-03-02 | 2012-10-31 | 河南省气象科学研究所 | Frozen soil and dry soil layer measurement sensor |
| KR20160035642A (en) * | 2014-09-23 | 2016-04-01 | 한국전력공사 | Device for measuring thermal resistivity of soil |
| CN205209467U (en) * | 2015-12-24 | 2016-05-04 | 丰满发电厂 | Novel frozen soil depth sensor |
| CN105783838A (en) * | 2016-04-14 | 2016-07-20 | 哈尔滨今星微电子科技有限公司 | Frozen soil depth sensor |
| CN205719340U (en) * | 2015-12-21 | 2016-11-23 | 民勤县邦德贸易有限公司 | A kind of soil moisture measuring instrument |
-
2017
- 2017-06-01 CN CN201710404380.9A patent/CN107144593B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626898A (en) * | 1991-11-28 | 1994-02-04 | J Jiii Tex Kk | Sensor for detecting moisture and temperature in soil |
| CN202511782U (en) * | 2012-03-02 | 2012-10-31 | 河南省气象科学研究所 | Frozen soil and dry soil layer measurement sensor |
| KR20160035642A (en) * | 2014-09-23 | 2016-04-01 | 한국전력공사 | Device for measuring thermal resistivity of soil |
| CN205719340U (en) * | 2015-12-21 | 2016-11-23 | 民勤县邦德贸易有限公司 | A kind of soil moisture measuring instrument |
| CN205209467U (en) * | 2015-12-24 | 2016-05-04 | 丰满发电厂 | Novel frozen soil depth sensor |
| CN105783838A (en) * | 2016-04-14 | 2016-07-20 | 哈尔滨今星微电子科技有限公司 | Frozen soil depth sensor |
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