Lateral pressure early warning structure for high-stress roadway support
By introducing a combination of hydraulic rods, roof plates, insert plates, and alarms into the support structure of high-stress roadways, the lateral pressure changes of the support structure can be monitored and warned in real time, solving the problem of lack of early warning in existing technologies and improving roadway safety and the reaction speed of operators.
Patent Information
- Application Number
- CN202520631717.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-04-07
AI Technical Summary
The lack of effective monitoring and early warning mechanisms for existing high-stress roadway support structures may lead to sudden failure of the support structure when it is excessively deformed, threatening roadway safety and personnel safety.
A high-stress roadway support lateral pressure early warning structure was designed. It uses a combination of hydraulic rods, roof plates, insert plates, contacts, and controller alarms to monitor the pressure changes at the top of the support frame in real time. When the pressure exceeds the limit, the insert plate contacts the contact to trigger the alarm and alert the operator.
It enables real-time monitoring and early warning of the support structure, reduces the risk of roadway collapse caused by support structure failure, and improves safety and rapid response capabilities.
Smart Images
Figure CN223739443U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to roadway support technical field especially relates to a high stress roadway support lateral pressure early warning structure. BACKGROUND
[0002] High stress roadway support refers to a series of engineering measures and technical means taken in underground mining, tunnel excavation or other underground engineering in order to ensure the stability and safety of the roadway under high ground stress conditions.
[0003] Under high stress environment, the surrounding rock of the roadway may produce large deformation due to the action of ground stress, and even damage, so it is necessary to control such deformation and damage through support, and the common roadway support method is support: using wood, metal or other materials to support the top and side wall of the roadway to prevent its collapse; anchor shotcrete support: it is a common support method, including anchor rod and shotcrete. The anchor rod is fixed in the surrounding rock to provide anchoring force, and the shotcrete is used to close the surface of the surrounding rock to enhance its integrity; steel support: using steel, U-shaped steel and other metal materials to make a support, suitable for large cross section roadway under high ground stress conditions.
[0004] At present, in order to ensure the safety of high stress roadway, one of the common methods is to cut the roof and unload pressure, that is, to create a weak zone in the roof of the roadway artificially to release part of the ground stress and reduce the pressure of the roof of the roadway, however, even after taking the measures of cutting the roof and unloading pressure, the support structure of high stress roadway is still subjected to the action of lateral support pressure of the protective coal pillar for a long time, and this continuous lateral pressure will cause the deformation of the support structure, and even may reach the critical state, thereby threatening the safety of the roadway and the life safety of the staff, the existing support structure often lacks effective monitoring and early warning mechanism when the deformation exceeds the design allowable amount, once the support structure fails due to excessive deformation, the sudden collapse of the roadway may occur without warning, causing unpredictable serious consequences, therefore, a high stress roadway support lateral pressure early warning structure is provided to overcome the above defects. CONTENT OF UTILITY MODEL
[0005] The utility model aims at solving the shortcomings in the prior art and provides a high stress roadway support lateral pressure early warning structure.
[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a high stress roadway support lateral pressure early warning structure, including support frame, the left and right two ends of support frame are fixedly connected with support rod, the top middle of support frame is fixedly connected with hydraulic rod, the output end of hydraulic rod is fixedly connected with roof, the front and rear two ends of roof are fixedly connected with extension plate, the bottom of extension plate is fixedly connected with plugboard, the bottom middle of plugboard is fixedly connected with second contact, the top front and rear two ends of support frame are fixedly connected with hollow plate, the left and right sides in hollow plate are fixedly connected with compression spring, the middle of first contact is fixedly connected with the below of the inboard of hollow plate, the inboard upper side of support frame is fixedly connected with alarm, the left side of inboard upper side of support frame is fixedly connected with controller.
[0007] As the further description of the above technical scheme: the bottom edge of roof is in contact with the inboard of support frame top, the inside of hollow plate is slidably connected with the outside of plugboard, the end of compression spring away from hollow plate is fixedly connected with the bottom end of plugboard, the top of first contact is in contact with the bottom of second contact, can real-time monitoring support frame top moves upwardly and supports the roof, when exceeding the pressure that hydraulic rod bears, then the roof drives plugboard to move to the first contact of hollow plate inside, when the second contact of plugboard bottom and the first contact contact, then through the controller control alarm gives the alarm, reminds the operator.
[0008] As the further description of the above technical scheme: the first contact and second contact are electrically connected with the controller, and the controller is electrically connected with the alarm, the premise that the controller controls the alarm to start is that the first contact and second contact contact each other, when the hydraulic rod is subjected to the limit bearing force, the second contact of plugboard bottom and the second contact in hollow plate contact, and through the controller control alarm starts, to the purpose of reminding the operator.
[0009] As the further description of the above technical scheme: the top longitudinal section shape of support frame is semicircular, and the top of support frame is provided with recess, and the hydraulic rod is in the recess of support frame top, can let hydraulic rod to top up roof for playing the role of support, when the hydraulic rod or the top of support frame can not bear the pressure, the hydraulic rod loses the strength of top up, and the support frame can not bear the extrusion of hydraulic rod, and plugboard is inserted into hollow plate, realizes the operation of early warning.
[0010] As the further description of the above technical scheme: the number of roof is three, and roof is distributed in the upper left, the upper and the upper right of support frame top, the whole roof is provided with the camber, and the camber of the whole roof is matched with the camber of support frame top, even if there is lateral support pressure and presses the upper edge of support frame, roof can be triggered by pressure alarm.
[0011] As a further description of the above technical solutions: the hollow plate is provided with a groove at the top, and the cross-sectional shape of the groove at the top of the hollow plate matches the cross-sectional shape of the plug-in plate, the compression spring and the first contact are both in the groove inside the hollow plate, the plug-in plate is limited to slide in the hollow plate, and the situation that the plug-in plate is separated to cause the second contact to contact the first contact is avoided.
[0012] As a further description of the above technical solutions: the number and position of the alarm are corresponding to the number and position of the top plate, and the three alarms on the upper side of the support frame are independently controlled by the controller, the number and position of the alarm are corresponding to the number and position of the top plate, and the operator can observe the alarm at the specific position to determine the lateral support pressure of the support frame at the position and make a quick response.
[0013] The utility model has the advantages of the following beneficial effects:
[0014] The high-stress roadway support lateral pressure early warning structure designed in the utility model is designed in cooperation with the controller and the alarm, so that the device can monitor the top plate supported upwardly by the support frame top in real time, when the high-stress roadway cuts the top and releases pressure, the support frame of the high-stress roadway is retracted due to the long-term lateral support pressure of the protective coal column, when the pressure exceeds the pressure borne by the hydraulic rod, the top plate drives the plug-in plate to move to the first contact inside the hollow plate, at this time, the second contact at the bottom of the plug-in plate contacts the first contact, the controller controls the alarm to give an alarm, reminding the operator, the number of the top plates is three groups, which are distributed at the left upper, the upper and the right upper positions of the support frame top, even if the lateral support pressure presses the upper edge of the support frame, the top plate can be pressed to trigger the alarm, the number and position of the alarm are corresponding to the number and position of the top plate, the operator can observe the alarm at the specific position to determine the lateral support pressure of the support frame at the position and make a quick response, which reduces the difficulty of subsequent problem investigation to a certain extent. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is a whole structure schematic view of the utility model;
[0016] Fig. 2 It is a whole longitudinal section structure schematic view of the support frame of the utility model;
[0017] Fig. 3 It is a longitudinal section structure schematic view of the hollow plate of the utility model;
[0018] Fig. 4 It is a support frame top end local longitudinal overturning 180 structure schematic view of the utility model.
[0019] LEGEND:
[0020] 1, support frame; 2, support rod; 3, top plate; 4, extension plate; 5, plug-in plate; 6, hollow plate; 7, hydraulic rod; 8, alarm; 9, first contact; 10, second contact; 11, compression spring; 12, controller. DETAILED DESCRIPTION
[0021] REFERENCE Figs. 1 to 4 The utility model provides a high stress roadway support lateral pressure early warning structure, including support frame 1, support frame 1 both ends pass through bolt fixed support rod 2, support frame 1 top middle part passes through bolt fixed hydraulic rod 7, and hydraulic rod 7 output end passes through bolt fixed top plate 3, and top plate 3 both ends weld extension plate 4, and extension plate 4 bottom end weld plug-in plate 5, and plug-in plate 5 bottom middle part sets up second contact 10, and support frame 1 top above both ends weld hollow plate 6, and hollow plate 6 inside both sides weld compression spring 11, and hollow plate 6 inside below middle part sets up first contact 9, and support frame 1 inside top above passes through bolt fixed alarm 8, and support frame 1 inside top above left side passes through bolt fixed controller 12, and top plate 3 bottom edge with support frame 1 top inside contact, and hollow plate 6 inside with plug-in plate 5 outside slide connection, and compression spring 11 far from one end of hollow plate 6 with plug-in plate 5 bottom end fixed connection, and first contact 9 top with second contact 10 bottom contact, can real -time monitoring support frame 1 top move upward and support top plate 3, when exceeding the pressure that hydraulic rod 7 bears, then top plate 3 drives plug-in plate 5 to move to the first contact 9 inside hollow plate 6, at this time, the second contact 10 of plug-in plate 5 bottom and first contact 9 contact then through controller 12 control alarm 8 and send out warning, remind operator.
[0022] As the further implementation of the above technical solution: first contact 9 and second contact 10 are electrically connected with controller 12, and controller 12 is electrically connected with alarm 8, and the premise of controller 12 controlling alarm 8 to start is that first contact 9 and second contact 10 contact each other, when hydraulic rod 7 is subjected to the limit bearing force, the second contact 10 at the bottom of plug-in plate 5 contacts the second contact 10 in the hollow plate 6, and the alarm 8 is started through the controller 12, so as to remind the operator.
[0023] As the further implementation of the above technical solution: the top of the support frame 1 is semicircular in longitudinal section, and a groove is formed in the top of the support frame 1, and the hydraulic rod 7 is located in the groove formed in the top of the support frame 1, so that the hydraulic rod 7 can lift the top plate 3 outward to support, when the hydraulic rod 7 or the top of the support frame 1 cannot bear the pressure, the hydraulic rod 7 loses the force to lift outward, and the support frame 1 cannot bear the extrusion of the hydraulic rod 7, both of which will make the plug-in plate 5 inserted into the hollow plate 6, so as to realize the operation of early warning.
[0024] As a further implementation of the above technical solution: the number of top plates 3 is three, and the top plates 3 are distributed at the upper left, the upper center and the upper right of the top of the support frame 1, the top plates 3 are provided with an overall arc, and the overall arc of the top plates 3 matches the arc of the top of the support frame 1, so that even if the lateral support pressure presses the upper edge of the support frame 1, the top plates 3 can be pressed to trigger the alarm 8,
[0025] As a further implementation of the above technical solution: the top of the hollow plate 6 is provided with a groove, and the cross-sectional shape of the groove at the top of the hollow plate 6 matches the cross-sectional shape of the plug plate 5, the compression spring 11 and the first contact 9 are both in the groove inside the hollow plate 6, so that the plug plate 5 is limited to slide inside the hollow plate 6, avoiding the case that the plug plate 5 is separated to cause the second contact 10 to contact the first contact 9.
[0026] As a further implementation of the above technical solution: the number and position of the alarms 8 correspond to the number and position of the top plates 3, and the three alarms 8 on the upper side of the support frame 1 are independently controlled by the controller 12, the number and position of the alarms 8 correspond to the number and position of the top plates 3, and the operator can observe the specific position of the alarm 8 to determine where the lateral support pressure of the support frame 1 is applied and to quickly respond.
[0027] Among them, the controller 12 in the specification is a common PLC control module on the market, and the specific model is Siemens S7-300, and the specification does not make any innovation inside, so the controller 12 is not described in detail.
[0028] Working principle:
[0029] When the utility model is used, the support frame 1 is installed in the tunnel, the support rods 2 are used to connect the lower left corner and the lower right corner of the support frame 1, after installation, the hydraulic rod 7 at the top of the support frame 1 is started, the hydraulic rod 7 drives the output end of the top plate 3 to expand outward, and the top plate 3 drives the plug plate 5 to slide upward from the hollow plate 6 through the extension plate 4, at this time, the first contact 9 and the second contact 10 are separated, the compression spring 11 rebounds, until the top plate 3 extrudes the top of the tunnel upward, the controller 12 is opened, when the hydraulic rod 7 at the bottom of the top plate 3 cannot bear the pressure at the top, there are two cases, one is that the hydraulic rod 7 loses the supporting effect, the other is that the bottom of the hydraulic rod 7 penetrates the top of the support frame 1, both of which will cause the plug plate 5 to reinsert into the hollow plate 6, the second contact 10 at the bottom of the plug plate 5 contacts the first contact 9 inside the hollow plate 6, the controller 12 controls the corresponding range of alarms 8 to issue an alarm to remind the operator, and the operator can observe the specific position of the alarm 8 to determine where the lateral support pressure of the support frame 1 is applied and to quickly respond, which reduces the difficulty of subsequent problem troubleshooting to a certain extent.
[0030] It should be explained finally: above only is the preferred embodiment of the utility model and is not used for limiting the utility model, although the utility model has been explained in detail with reference to foregoing embodiment, for the skilled person in the art, it still can modify the technical scheme recorded in foregoing each embodiment or make equivalent replacement to part technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model should be contained in the protection scope of the utility model.
Claims
1. A high stress roadway support lateral pressure early warning structure comprising a support frame (1) characterised in that: The supporting frame (1) is fixedly connected with support rods (2) at both ends, a hydraulic rod (7) is fixedly connected to the middle of the top of the supporting frame (1), a top plate (3) is fixedly connected to the output end of the hydraulic rod (7), extension plates (4) are fixedly connected to the front and rear ends of the top plate (3), plug-in plates (5) are fixedly connected to the bottom ends of the extension plates (4), second contacts (10) are fixedly connected to the middle of the bottom of the plug-in plates (5), hollow plates (6) are fixedly connected to the front and rear ends above the supporting frame (1), compression springs (11) are fixedly connected to the left and right sides inside the hollow plates (6), first contacts (9) are fixedly connected to the middle below the inner side of the hollow plates (6), alarms (8) are fixedly connected to the inner side above the supporting frame (1), and a controller (12) is fixedly connected to the left side above the inner side of the supporting frame (1).
2. The lateral pressure pre-warning structure for high stress roadway support of claim 1, wherein: The bottom edge of the top plate (3) is in contact with the inner side of the top of the supporting frame (1), the inside of the hollow plate (6) is in sliding connection with the outside of the plug-in plate (5), one end of the compression spring (11) away from the hollow plate (6) is fixedly connected to the bottom end of the plug-in plate (5), and the top of the first contact (9) is in contact with the bottom of the second contact (10).
3. The lateral pressure pre-warning structure for high stress roadway support of claim 1, wherein: The first contact (9) and the second contact (10) are electrically connected with the controller (12), and the controller (12) is electrically connected with the alarm (8), and the premise for the controller (12) to control the alarm (8) to start is that the first contact (9) and the second contact (10) are in contact with each other.
4. The lateral pressure pre-warning structure for high stress roadway support of claim 1, characterized in that: The top of the supporting frame (1) is semicircular in longitudinal cross-sectional shape, and a groove is formed in the top of the supporting frame (1), and the hydraulic rod (7) is located in the groove formed in the top of the supporting frame (1).
5. The lateral pressure pre-warning structure for high stress roadway support of claim 1, wherein: The number of the top plates (3) is three, and the top plates (3) are distributed at the left upper, upper and right upper positions of the top of the supporting frame (1), the top plate (3) as a whole is provided with a radian, and the radian of the top plate (3) as a whole matches the radian of the top of the supporting frame (1).
6. The lateral pressure pre-warning structure for high stress roadway support of claim 1, wherein: A groove is formed in the top of the hollow plate (6), and the cross-sectional shape of the groove in the top of the hollow plate (6) matches the cross-sectional shape of the plug-in plate (5), and the compression spring (11) and the first contact (9) are both located in the groove inside the hollow plate (6).
7. The lateral pressure pre-warning structure for high stress roadway support of claim 1, wherein: The number and position of the alarms (8) correspond to the number and position of the top plates (3), and the three alarms (8) above the inner side of the supporting frame (1) are independently controlled by the controller (12).