Pit collapse detection device

Abstract

The utility model provides a pit collapse detection device, and relates to the field of detection devices. The pit collapse detection device comprises a connecting steel wire, a landfill assembly and a detection assembly, the detection assembly is used for being installed in a stable rock-soil body. The landfill assembly comprises a balancing weight and a gelling body, the gelling body is buried in a soil layer, and the balancing weight is located in the gelling body; one end of the connecting steel wire is connected with the detection assembly, and the other end penetrates through the gel body and is connected with the balancing weight. According to the pit collapse detection device provided by the utility model, the problems that pit collapse can be monitored only by detecting ground displacement and deformation in the prior art, and the abnormity of a pit with latent property and abrupt property cannot be found in the early stage of collapse are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of detection devices, in particular to a pit collapse detection device. BACKGROUND

[0002] Pit collapse has obvious latency and burstiness, and the detection method and device are very limited. At present, the effective means for detecting pit collapse is mainly achieved by detecting ground displacement and deformation, but when the pit collapses to the ground, it often causes personal safety threats and property losses, and even casualties, so it is difficult to detect the pit collapse disaster with latency and burstiness characteristics in the early stage of collapse. CONTENT OF THE INVENTION

[0003] The purpose of the embodiment of the present application is to provide a pit collapse detection device to alleviate the technical problem that the existing technology cannot detect abnormalities in the early stage of pit collapse with latency and burstiness characteristics.

[0004] In order to solve the above technical problems, the technical scheme provided by the present application is:

[0005] The pit collapse detection device provided by the present application comprises a connecting steel wire, a landfill assembly and a detection assembly.

[0006] The detection assembly is used to be installed in a stable rock-soil body.

[0007] The landfill assembly comprises a counterweight and a cementing body, the cementing body is buried in the soil layer, and the counterweight is located in the cementing body.

[0008] One end of the connecting steel wire is connected with the detection assembly, and the other end passes through the cementing body and is connected with the counterweight.

[0009] Further, the detection assembly comprises a displacement meter, which is used to be installed in a stable rock-soil body and connected with the connecting steel wire.

[0010] Further, the detection assembly further comprises a fixing bolt, which is fixedly connected with the displacement meter and installed in a stable rock-soil body through a fastener.

[0011] Further, the connecting steel wire is in a straight line shape.

[0012] Further, the detection assembly comprises a turning piece, and the connecting steel wire passes through the turning piece to realize the turning of the connecting steel wire.

[0013] Further, the turning piece is provided as a fixed pulley, the fixed pulley is installed in a stable rock-soil body, and the connecting steel wire passes through the fixed pulley.

[0014] Further, the connecting steel wires, the filling assemblies and the detection assemblies are provided in plurality, and the plurality of connecting steel wires are connected with the plurality of filling assemblies and detection assemblies one by one.

[0015] Further, the connecting steel wires are detachably connected with the counterweights.

[0016] Further, the detection assembly further comprises a displacement controller and an alarm lamp, the displacement controller is connected with the displacement meter and the alarm lamp is signal connected.

[0017] Based on the above technical solutions, the technical effects realized by the pit collapse detection device are analyzed as follows.

[0018] The pit collapse detection device provided by the utility model comprises connecting steel wires, filling assemblies and detection assemblies; the detection assemblies are used for being installed in stable rock-soil bodies; the filling assemblies comprise counterweights and cementing bodies, the cementing bodies are embedded in soil layers, and the counterweights are located in the cementing bodies; one end of the connecting steel wires is connected with the detection assemblies, and the other end of the connecting steel wires is connected with the counterweights through the cementing bodies. The pit collapse detection device realizes pit collapse disaster prediction by detecting the rock-soil bodies which are locally preferentially collapsed in pits and the overall collapse conditions above the pits.

[0019] During construction, drilling is performed according to the required installation depth, the connecting steel wires are connected with the counterweights, and then the counterweights and the cementing bodies are placed into the bottom of the drill hole; the other end of the connecting steel wires is connected with the detection assemblies, the detection assemblies are fixed on the surrounding stable rock-soil bodies, a pre-set tension force which is much smaller than the gravity of the filling assemblies is applied to the detection assemblies, the connecting steel wires on one line are taut, and the stress value displayed on the detection assemblies is recorded. When pit collapse occurs, the cementing bodies lose anchoring with the surrounding rock-soil bodies, the connecting steel wires directly bear the weight of the cementing bodies, the counterweights and part of the rock-soil bodies which are cemented together with the cementing bodies, force is fed back to the detection assemblies, and the detection personnel can quickly learn the pit collapse condition through the change of the detection assemblies.

[0020] The pit collapse detection device realizes collapse disaster monitoring and prediction by monitoring the local collapse and the overall collapse in the pit, so that the stress of the detection assemblies changes suddenly. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0022] Figure 1Structure diagram of the pit collapse detection device provided by the embodiment of the present application Figure 1 ;

[0023] Figure 2 Structure diagram of the pit collapse detection device provided by the embodiment of the present application Figure 2 .

[0024] Icon: 111-displacement meter; 112-fixing bolt; 113-fastener; 114-turning piece;

[0025] 120-connection steel wire;

[0026] 131-weight block; 132-cementitious body

[0027] 400-stable rock-soil body;

[0028] 200-pit; 210-first boundary; 220-second boundary;

[0029] 300-drilling hole. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0031] In the description of the present application, it should be noted that the positions or location relationships indicated by the terms “inner”, “outer” and the like are based on the positions or location relationships shown in the drawings, or the positions or location relationships of the products of the present application when they are usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as limiting the present application. In addition, the terms “first”, “second” and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms “set”, “connected” should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0033] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] The sinkhole collapse detection device provided in this embodiment includes a connecting steel wire 120, a backfilling component, and a detection component. The detection component is installed in a stable rock and soil mass 400. The backfilling component includes a counterweight block 131 and a cementitious material 132, with the cementitious material 132 buried in the soil layer and the counterweight block 131 located within the cementitious material 132. One end of the connecting steel wire 120 is connected to the detection component, and the other end passes through the cementitious material 132 and is connected to the counterweight block 131. This sinkhole collapse detection device predicts sinkhole collapse disasters by detecting the localized preferential collapse of the rock and soil mass within the sinkhole 200 and the overall collapse above the sinkhole 200.

[0035] Specifically, in this embodiment, the mixed concrete is then injected into the bottom of the hole, the concrete wraps around the counterweight 131 and binds together with the surrounding soil, and the concrete forms a cementitious body 132.

[0036] During construction, a hole 300 is drilled to the required installation depth. After connecting the steel wire 120 to the counterweight 131, the counterweight 131 and the cementitious material 132 are placed at the bottom of the hole 300. The other end of the steel wire 120 is connected to the detection component, which is fixed to the surrounding stable rock and soil 400. A pre-set tension force, much smaller than the weight of the backfill component, is applied to the detection component, causing the connecting steel wire 120 along one line to be taut. The force value displayed on the detection component is recorded. When the pit 200 collapses, the cementitious material 132 loses its anchorage with the surrounding rock and soil. The connecting steel wire 120 directly bears the weight of the cementitious material 132, the counterweight 131, and part of the rock and soil bonded to the cementitious material 132, feeding the force back to the detection component. The detection personnel can quickly determine the collapse status of the pit 200 by observing the changes in the detection component.

[0037] This sinkhole collapse detection device monitors local and overall collapses within a 200-meter sinkhole, causing sudden changes in the stress of the detection components, ultimately enabling the monitoring and prediction of sinkhole disasters.

[0038] The following is a detailed description of the structure and shape of the pit collapse detection device:

[0039] In an optional embodiment of this utility model, the detection component includes a displacement gauge 111, which is installed on a stable rock and soil body 400 and connected to a connecting steel wire 120.

[0040] Specifically, one end of the displacement meter 111 is connected with the landfill assembly through the connecting steel wire 120, and the other end is fixed on the stable rock-soil body 400, when installing, a pre-set tension force smaller than the gravity of the landfill assembly is given to the displacement meter 111, so that the displacement meter 111 keeps a stable reading under the tension force of the connecting steel wire 120 and the stable rock-soil body 400, and the connecting steel wire 120 is also straightened under the tension force.

[0041] Referring to Figure 1 , the displacement meter 111 keeps a reading when receiving the pre-set tension force, at this time, the reading is recorded as the reading under the condition that the pit 200 does not collapse, and the reading is compared with the reading when the pit 200 collapses, if the reading of the displacement meter 111 suddenly becomes large, it indicates that the soil around the landfill assembly cannot resist the gravity of the landfill assembly, that is, the pit 200 collapses, and the occurrence of the collapse of the pit 200 can be known by observing the change of the displacement meter 111.

[0042] In an optional scheme of the embodiment of the utility model, the detection assembly further comprises a fixing bolt 112, the fixing bolt 112 is fixedly connected with the displacement meter 111, and is installed in the stable rock-soil body 400 through the fastener 113.

[0043] Specifically, the bolt is used as the fastener 113, and the steel plate of the drill hole 300 is used as the fixing bolt 112 for fixed installation. The fixing bolt 112 is first arranged on a relatively smooth stable rock-soil body 400, then a plurality of bolts are screwed on the stable rock-soil body 400 through the drill hole 300 and the fixing bolt 112; or the rivet is used as the fastener 113, and the steel plate of the drill hole 300 is used as the fixing bolt 112 for installation. The fixing bolt 112 and the stable rock-soil body 400 are riveted together. One end of the displacement meter 111 is connected with the connecting steel wire 120, and the other end is fixed on the fixing bolt 112.

[0044] The fixing bolt 112 is fixed on the stable rock-soil body 400 by using the bolt or the rivet, and the displacement meter 111 is fixed on the fixing bolt 112, so that the stability of the detection assembly can be effectively improved, and the detection assembly can be prevented from falling off from the stable rock-soil body 400 when the connecting steel wire 120 is suddenly subjected to a larger gravity due to the collapse of the pit 200, so that the detection failure is avoided.

[0045] In an optional scheme of the embodiment of the utility model, the connecting steel wire 120 is in a straight line shape.

[0046] Specifically, referring to Figure 1 , the connecting steel wire 120 is straightened in a straight line shape.

[0047] In the optional solution of the embodiment of the utility model, the detection assembly further comprises a turning piece 114, and the connecting steel wire 120 passes through the turning piece 114 to realize turning of the connecting steel wire 120.

[0048] Specifically, as shown in the figure, Figure 2 The turning piece 114 is installed between the displacement meter 111 and the filling assembly, the connecting steel wire 120 passes through the turning piece 114, the turning piece 114 changes the direction of the connecting steel wire 120, but the connecting steel wire 120 is still in a straightened state as a whole.

[0049] This installation mode makes the installation positions of the displacement meter 111 and the fixing bolt 112 away from the position of the drill hole 300 in a horizontal range, and also away from the collapse position of the pit 200, so that the detection personnel can determine the collapse condition of the pit 200 by observing the displacement of the displacement meter 111 in a safer position.

[0050] As an implementation mode, the turning piece 114 is provided as a fixed pulley, and the fixed pulley is installed on the stable rock-soil body 400, and the connecting steel wire 120 passes through the fixed pulley.

[0051] Specifically, the fixed pulley is fixed on the stable rock-soil body 400, and the connecting steel wire 120 changes the stress direction after passing through the fixed pulley.

[0052] The fixed pulley can turn the direction of the connecting steel wire 120 by 90 degrees, and the fixed pulley is fixed on the stable rock-soil body 400 and is not easy to fall off, and the connecting steel wire 120 receives smaller friction force when turning.

[0053] As another implementation mode, the turning piece 114 is provided as a circular-arc hollow pipe, and the connecting steel wire 120 passes through the hollow pipe. The hollow pipe can conveniently change the direction of the connecting steel wire 120, and the angle of the connecting steel wire 120 can be changed at will within 0-180 degrees according to the arc of the hollow pipe, so that the reading of the displacement meter 111 is conveniently observed.

[0054] In the optional solution of the embodiment of the utility model, the connecting steel wire 120, the filling assembly and the detection assembly are all provided with multiple ones, the multiple connecting steel wires 120 are connected with the multiple filling assemblies and the multiple detection assemblies one by one in a one-to-one correspondence. The length of at least one connecting steel wire 120 is different from the length of other connecting steel wires 120.

[0055] According to the buried depth of the pit 200, two kinds of collapse monitoring can be optionally set, one is set close to the pit 200, such as Figure 1 and Figure 2The setting is mainly for monitoring the local collapse of the pit 200, and when the pit 200 is locally collapsed to the first boundary 210, the cementing body 132 loses anchoring with the surrounding rock-soil body, the connecting steel wire 120 directly bears the weight of the cementing body 132, the weight of the counterweight block 131 and part of the rock-soil body cemented with the cementing body 132, and the displacement meter 111 appears obvious displacement change, so that whether the pit 200 is locally collapsed is judged.

[0056] Another setting is far away from the pit 200, such as Figure 1 and Figure 2 The setting is mainly for monitoring whether the local collapse of the pit 200 is further expanded, and is used for judging the development of the collapse. When the local collapse of the pit 200 develops to the second boundary 220, the cementing body 132 loses anchoring with the surrounding rock-soil body, the connecting steel wire 120 directly bears the weight of the cementing body 132, the weight of the counterweight block 131 and part of the rock-soil body cemented with the cementing body 132, and the displacement meter 111 appears obvious displacement change, so that whether the pit 200 is locally collapsed is judged.

[0057] In an optional scheme of the embodiment of the utility model, the connecting steel wire 120 and the counterweight block 131 are detachably connected.

[0058] Specifically, the counterweight block 131 is provided with an annular groove, and the connecting steel wire 120 is bound on the counterweight block 131 around the annular groove. In another embodiment, the counterweight block 131 is provided with a through hole, and the connecting steel wire 120 is bound on the counterweight block 131 after passing through the through hole on the counterweight block 131.

[0059] Using the detachable connection mode, if it is necessary to adjust the depth of the counterweight block 131 or replace the counterweight block 131, the counterweight block 131 can be taken out in the drill hole 300 and the connecting steel wire 120 is untied for adjustment, and the connecting steel wire 120 does not need to be cut. It is more convenient and faster to replace, and the cost is lower.

[0060] In an optional scheme of the embodiment of the utility model, the detection assembly further includes a displacement controller and an alarm lamp, the displacement controller is connected with the displacement meter 111 and the alarm lamp is signal connected.

[0061] Specifically, in the embodiment, the connecting steel wire 120 is arranged as a steel wire, and the counterweight block 131 is arranged as a steel block.

[0062] When the collapse occurs, the alarm lamp can prompt the detection personnel through the lightening, ringing and other ways, liberate the detection personnel from the fatigue state of staring at the reading change all the time, and reduce the possibility of missing reading and misreading.

[0063] The use method comprises:

[0064] S1: drilling the borehole 300 for monitoring the collapse of the pit 200, and determining the depth of the borehole 300 according to the buried depth of the pit 200;

[0065] S2: binding the counterweight 131 and the connecting steel wire 120 together;

[0066] S3: pouring the cementing material into the bottom of the borehole 300, and timely burying the counterweight 131 in the cementing material through the borehole 300, and cementing the counterweight 131 with the surrounding rock-soil body at the bottom of the borehole 300 together;

[0067] S4: connecting the connecting steel wire 120 and the displacement meter 111 together;

[0068] S5: estimating the weight G of the cementing body 132 and the counterweight;

[0069] S6: pre-tensioning the displacement meter 111, the tensioning force F is far less than the weight G of the cementing body 132 and the counterweight 131, and then anchoring the displacement meter 111 and the stable rock-soil body together;

[0070] S307: recording the initial value of the displacement meter 111, and starting monitoring;

[0071] S308: when the displacement value in the displacement meter 111 suddenly increases, it is judged that the collapse occurs in the region near the cementing body 132 at the bottom of the borehole 300.

[0072] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0073] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pit collapse detection apparatus, characterized by, The utility model relates to a displacement monitoring device for monitoring the displacement of a stable rock-soil mass (400), comprising: a connecting steel wire (120), a filling assembly and a detection assembly; the detection assembly is arranged in the stable rock-soil mass (400); the filling assembly comprises a weight block (131) and a cementing body (132), the cementing body (132) is embedded in the soil layer, and the weight block (131) is arranged in the cementing body (132); one end of the connecting steel wire (120) is connected with the detection assembly, and the other end of the connecting steel wire (120) is connected with the weight block (131) through the cementing body (132).

2. The void collapse detection apparatus of claim 1, wherein, the detection assembly comprises a displacement meter (111), the displacement meter (111) is arranged in the stable rock-soil mass (400) and is connected with the connecting steel wire (120).

3. The void collapse detection apparatus of claim 2, wherein, the detection assembly further comprises a fixing bolt (112), the fixing bolt (112) is fixedly connected with the displacement meter (111) and is arranged in the stable rock-soil mass (400) through a fastener (113).

4. The void collapse detection apparatus of claim 3, wherein, the connecting steel wire (120) is in a straight line.

5. The void collapse detection apparatus of claim 3, wherein, the detection assembly further comprises a turning piece (114), the connecting steel wire (120) passes through the turning piece (114) to realize the turning of the connecting steel wire (120).

6. The void collapse detection apparatus of claim 5, wherein, the turning piece (114) is a fixed pulley, the fixed pulley is arranged in the stable rock-soil mass (400), and the connecting steel wire (120) passes through the fixed pulley.

7. The void collapse detection apparatus of any one of claims 1-6, wherein, a plurality of the connecting steel wire (120), the filling assembly and the detection assembly are arranged, and the plurality of the connecting steel wire (120) is connected with the plurality of the filling assembly and the detection assembly one by one.

8. The void collapse detection apparatus of claim 1, wherein, the connecting steel wire (120) is detachably connected with the weight block (131).

9. The void collapse detection apparatus of claim 2, wherein, the detection assembly further comprises a displacement controller and an alarm lamp, the displacement controller is connected with the displacement meter (111), and the alarm lamp is signal connected.

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