Automatic monitoring equipment for hydrogeological conditions of landslide

Abstract

The utility model discloses an automatic monitoring device for landslide hydrogeological conditions. The automatic monitoring device comprises a hydrogeological test module, a signal acquisition and transmission module and a signal receiving module. The hydrogeological test module is arranged in a drill hole of a landslide mass and comprises an anti-seepage body, a test pack, a water pressure sensor or a water content sensor placed in the test pack and a seepage body wrapping the sensor in the test pack. The module tests the underground water level change condition at the position and the moisture content of slip mass soil through a water pressure sensor and a moisture content sensor, and uploads collected data to a signal acquisition and transmission module arranged on a slope of a slip mass, and then the signal acquisition and transmission module transmits the data to a signal receiving module. And entering a monitoring information processing system. According to the utility model, a slip mass moisture content curve graph drawn through measured data truly reflects the moisture content change condition of slip mass soil and a slip surface position, so that the slip mass moisture content curve graph can effectively carry out landslide early warning and forecasting.

Description

TECHNICAL FIELD

[0001] The utility model relates to landslide disaster monitoring and early warning forecasting technical field, specifically a kind of automatic monitoring equipment of landslide hydrogeological condition. BACKGROUND

[0002] Precipitation is an important inducement of landslide disaster, research shows that more than 90% of landslide events are related to rainfall. Rainfall affects and changes the hydrogeological conditions of landslide by surface infiltration, underground runoff, collection and drainage, increases the weight of landslide, reduces the strength parameters of landslide soil, erodes and damages the slope structure, etc. Complex processes, and induces landslide collapse.

[0003] Traditional landslide hydrological condition monitoring mainly includes rainfall monitoring and groundwater level monitoring.

[0004] Although rainfall monitoring accurately captures landslide rainfall, it is difficult to find evaluation factors for rainfall-induced landslides under the influence of complex and variable factors such as rainfall intensity, rainfall duration, multiple rainfall interval duration, ground evaporation and landslide material structure. Therefore, the effect of using rainfall monitoring to warn landslides is poor.

[0005] Groundwater in landslide body is often completely surrounded by soil particles under the action of gravity, and flows freely between soil particles. The soil is in a super-saturated state or even a floating state. Landslides often reach this state and will deform and deform. Groundwater level monitoring can only monitor the groundwater level.

[0006] The process of rainfall infiltration from slope surface, surface runoff, underground infiltration and underground collection changes the hydrogeological conditions of landslide body. The process of soil from dry state to super-saturated state is very complex, and landslide often deforms in this process. Therefore, it is particularly important to strengthen the monitoring of landslide hydrogeological conditions.

[0007] Therefore, it is of great significance to develop an automatic monitoring equipment for landslide hydrogeological conditions for landslide monitoring and early warning. CONTENT OF THE UTILITY MODEL

[0008] The utility model aims to provide an automatic monitoring equipment for landslide hydrogeological conditions, comprising a hydrogeological test module, a signal acquisition and transmission module, and a signal receiving module.

[0009] The hydrogeological test module comprises a test package, a permeation body, a water pressure sensor, a moisture content sensor and an impermeable body.

[0010] The test package is filled with a permeation body, and the permeation body wraps the water pressure sensor or the moisture content sensor in the test package.

[0011] The impermeable body is a strip-shaped tube bag structure, and a plurality of test bags are arranged at intervals along the length direction of the impermeable body outside the impermeable body, and the test bags in which the water pressure sensors are arranged are arranged on the top and bottom of the outside of the impermeable body. The purpose of arranging the impermeable body is to prevent the groundwater at different positions from interfering with each other.

[0012] The hydrogeological test module is located in the sliding body.

[0013] A plurality of drill holes are dug at intervals on the sliding body, and the hydrogeological test module is arranged in the drill holes.

[0014] The drill hole penetrates through the sliding surface and is finally located in the stable bedrock, and the sliding surface divides the drill hole into a sliding body section L1 and a sliding bed section L2.

[0015] The signal collection and transmission module is arranged on the landslide and is connected with the wires of the water pressure sensors and the water content sensors.

[0016] Further, the test bag is a geotextile bag.

[0017] Further, the permeable body is landslide soil or sandy soil in the landslide range.

[0018] Further, the impermeable body is an impermeable membrane tube bag filled with impermeable cement mortar, and the diameter of the impermeable membrane tube bag after being filled is matched with the diameter of the drill hole.

[0019] The bottom and the side wall of the impermeable membrane tube bag are closed, and the top is open.

[0020] Further, two water pressure sensors are arranged in the hydrogeological test module, which are a 1# water pressure sensor and a 2# water pressure sensor.

[0021] The 1# water pressure sensor is located in the sliding body section L1 and is close to the slope surface of the landslide.

[0022] The 2# water pressure sensor is located in the sliding bed section L2.

[0023] Further, at least one water content sensor is arranged below the sliding surface.

[0024] Further, at least one water content sensor is arranged within a range of 1m from the sliding surface.

[0025] Further, the spacing between adjacent water content sensors is 0.5-2m.

[0026] Further, the water content sensor comprises one or more of any combination of an electric resistance method water content sensor, a tensiometer method water content sensor, a neutron method water content sensor, a gamma-ray method water content sensor, a standing wave ratio method water content sensor, a time domain reflectometry method water content sensor, and a high frequency oscillation method water content sensor.

[0027] Further, the height of the sliding bed section L2 is 1m-3m.

[0028] The technical effects of the utility model are self-evident, and the utility model has the following beneficial effects:

[0029] The utility model discloses a water pressure sensor 1# tests the ground area water depth, provides the analysis parameter for the groundwater power percolation, the water pressure sensor 2# tests the water head pressure near the sliding surface, provides the analysis parameter for the groundwater power percolation, and provides the mechanical basis for the landslide stability analysis, the sensor in the hydrogeological test module measures the soil moisture content of the position, draws the sliding body moisture content curve graph along the sensor arrangement direction, the curve graph can intuitively and truly reflect the sliding body soil moisture change situation and the sliding surface position moisture content change situation, effectively develops the landslide early warning and forecast, in combination with the landslide displacement monitoring data, establishes the deformation-hydrogeological correlation factor, develops the landslide deformation prediction, and improves the early warning and forecast reliability, through the determination of the landslide moisture content, can enclose the water-saturated zone and the groundwater flow zone in the sliding body, reveals the existence state of groundwater in the landslide body, in combination with the relationship function of the strength index of the landslide zone soil and the sliding body soil and the moisture content, obtains the strength parameter of the landslide zone soil and the sliding body soil, can effectively analyze the stability of the landslide under the action of groundwater, and provides the mechanical support for the landslide early warning. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 It is a hydrogeological test module schematic view (front view);

[0031] Fig. 2 It is a hydrogeological test module schematic view (side view);

[0032] Fig. 3 It is a landslide hydrogeological automation monitoring equipment layout;

[0033] Fig. 4 It is a landslide hydrogeological test result map.

[0034] In the drawing: 1-sliding surface;2-sliding surface;3-sliding body;4-drill hole;5-test package;6-permeation body;7-water pressure sensor;701-1# water pressure sensor;702-2# water pressure sensor;8-moisture content sensor;9-anti-permeation body;10-hydrogeological test module;11-signal acquisition transmission module;12-signal receiving module. DETAILED DESCRIPTION

[0035] The utility model is further described below in combination with the embodiments, but should not be understood as the above-mentioned subject matter range of the utility model is limited to the following embodiments. According to the ordinary technical knowledge and conventional means in the art, various substitutions and changes are made without departing from the above-mentioned technical thought of the utility model, and all should be included in the protection scope of the utility model.

[0036] Embodiment 1:

[0037] Referring to Figs. 1-3 An automatic monitoring equipment of landslide hydrogeological condition, comprising a hydrogeological test module 10, a signal acquisition and transmission module 11 and a signal receiving module 12.

[0038] The hydrogeological test module 10 comprises a test bag 5, a permeation body 6, a water pressure sensor 7, a water content sensor 8 and an impermeable body 9.

[0039] The test bag 5 is filled with the permeation body 6, and the permeation body 6 wraps the water pressure sensor 7 or the water content sensor 8 in the test bag 5.

[0040] The impermeable body 9 is a strip-shaped tube bag structure, and a plurality of test bags 5 are arranged on the outer side of the impermeable body 9 along the length direction of the impermeable body 9, and the test bag with the water pressure sensor 7 is arranged on the top and bottom of the outer side of the impermeable body 9.

[0041] The hydrogeological test module 10 is located in the sliding body 3.

[0042] A plurality of drill holes 4 are dug in the sliding body 3 at intervals, and the hydrogeological test module 10 is arranged in the drill hole 4.

[0043] The drill hole 4 is located in the stable bedrock after passing through the sliding surface 2, and the sliding surface 2 divides the drill hole 4 into the sliding body section L1 and the sliding bed section L2.

[0044] The signal acquisition and transmission module 11 is arranged on the landslide 1 and connected with the lead wires of the water pressure sensor 7 and the water content sensor 8, so as to collect the data collected by the sensors and transmit the data to the signal receiving module 12 for information processing.

[0045] Through the monitoring of the hydrogeological condition, combined with the monitoring data of landslide displacement, stress and the like, the early warning and prediction of landslide disaster are carried out.

[0046] Embodiment 2:

[0047] The main structure of the embodiment is the same as that of embodiment 1, and further, the test bag 5 is a geotextile bag.

[0048] Embodiment 3:

[0049] The main structure of this embodiment is the same as any one of Embodiments 1-2, and further, the permeable body 6 is landslide soil or sandy soil within the landslide range.

[0050] Embodiment 4:

[0051] The main structure of this embodiment is the same as any one of Embodiments 1-3, and further, the impermeable body 9 is an impermeable membrane tube bag filled with impermeable cement mortar, and the diameter of the impermeable membrane tube bag after filling is matched with the diameter of the drill hole 4.

[0052] The bottom and side wall of the impermeable membrane tube bag are closed, and the top is open.

[0053] The arrangement method of the hydrogeological test module 10 includes the following steps:

[0054] 1) The test package 5 is arranged on the outer surface layer of the impermeable membrane tube bag at intervals.

[0055] The wires of the water pressure sensor 7 or the water content sensor 8 in the test package 5 are also arranged along the impermeable membrane surface.

[0056] 2) The impermeable membrane tube bag with the test package 5 installed is lowered into the drill hole 4, and impermeable cement mortar is poured into the top opening of the impermeable membrane tube bag, so that the impermeable membrane tube bag is in close contact with the drill hole wall, and the arrangement of the hydrogeological test module 10 is completed.

[0057] Embodiment 5:

[0058] The main structure of this embodiment is the same as any one of Embodiments 1-4, and further, the impermeable body 9 is an impermeable membrane tube bag filled with impermeable cement mortar.

[0059] The bottom and surrounding of the impermeable membrane tube bag are closed, and the top is open, and the diameter of the impermeable membrane tube bag is matched with the diameter of the drill hole.

[0060] The initial interior of the impermeable membrane tube bag is in a vacuum state, and it is folded into a strip shape, the test package 5 is pasted on the outer surface layer of the impermeable membrane tube bag according to the interval requirement, and the sensor wires are arranged along the impermeable membrane surface; the impermeable membrane tube bag and the test package 5 are placed into the drill hole 4, and then impermeable cement mortar is poured into the impermeable membrane tube bag, the impermeable cement mortar expands the impermeable membrane tube bag by extrusion, so that the impermeable membrane tube bag and the impermeable cement mortar are in close contact with the drill hole wall, and the water permeable package can also be in close contact with the drill hole wall, and after the impermeable cement mortar solidifies, a water-resistant body with excellent water-resistant performance is formed in the hole.

[0061] Embodiment 6:

[0062] The main structure of this embodiment is the same as any one of Embodiments 1-4, and further, two water pressure sensors 7 are arranged in the hydrogeological test module 10, which are 1# water pressure sensor 701 and 2# water pressure sensor 702.

[0063] The 1# water pressure sensor 701 is located in the sliding body section L1 and close to the slope surface of the landslide 1.

[0064] The 2# water pressure sensor 702 is located in the sliding bed section L2.

[0065] Embodiment 7:

[0066] The main structure of the present embodiment is the same as any one of embodiments 1-5, and further, at least one water content sensor 8 is arranged below the sliding surface 2.

[0067] Embodiment 8:

[0068] The main structure of the present embodiment is the same as any one of embodiments 1-6, and further, at least one water content sensor 8 is arranged within a range of 1m from the sliding surface 2.

[0069] Embodiment 9:

[0070] The main structure of the present embodiment is the same as any one of embodiments 1-7, and further, the spacing between adjacent water content sensors 8 is 0.5-2m, which can also be adjusted according to the geological characteristics of the landslide, for testing the water content of the soil at the corresponding position and its changes.

[0071] Embodiment 10:

[0072] The main structure of the present embodiment is the same as any one of embodiments 1-8, and further, the water content sensor 8 includes one or a combination of any of the following: resistance method water content sensor, tensiometer method water content sensor, neutron method water content sensor, gamma-ray method water content sensor, standing wave ratio method water content sensor, time domain reflection method water content sensor, and high frequency oscillation method water content sensor.

[0073] Embodiment 11:

[0074] The main structure of the present embodiment is the same as any one of embodiments 1-9, and further, the height of the sliding bed section L2 is 1m-3m.

[0075] Embodiment 12:

[0076] The main structure of the present embodiment is the same as any one of embodiments 1-10, and further, an automatic monitoring device for landslide hydrogeological conditions includes a hydrogeological test module, a signal acquisition and transmission module, and a signal receiving module.

[0077] The hydrogeological test module includes a water content sensor, an impermeable body, a water pressure sensor, and a connecting sleeve.

[0078] The hydrogeological test module contains several moisture content sensors, which are arranged at certain intervals from top to bottom, with an interval of 0.5-2 m, and the interval can be adjusted according to the geological characteristics of the landslide.

[0079] In order to effectively test the moisture content of the slope soil, a permeable body is wrapped outside the moisture content sensor, which is generally a material with good permeability such as sand or landslide soil. The change of the moisture content of the landslide soil around the moisture content sensor changes the moisture content of the permeable body, and then the moisture content of the landslide soil at this position is measured by measuring the moisture content of the permeable body through the moisture content sensor. In order to prevent the water permeable material between the moisture content sensors from changing the original hydrogeological properties and interfering with the test results, an impermeable body is arranged between the moisture content sensors to block the water.

[0080] The hydrogeological test module contains two water pressure sensors, the 1# water pressure sensor 701 is located in the permeable body 6 near the ground surface of the upper part of the landslide, for testing the change of surface water at the ground position; the 2# water pressure sensor 702 is located in the permeable body 6 near the sliding surface of the sliding bed, for testing the change of groundwater level at the corresponding position. The water pressure sensor 7 is wrapped with a permeable body 6, which is generally a material with good permeability such as sand.

[0081] The hydrogeological test module uses a geotextile bag to assemble the moisture content sensor, water pressure sensor, permeable body, impermeable body, sensor lead, etc. according to the corresponding requirements, so that it can be conveniently installed in the landslide body.

[0082] The hydrogeological test module is placed in the landslide body, and a borehole is drilled on the landslide, which penetrates the sliding surface and enters the sliding bed, generally 1-3 m into the sliding bed. When placing the hydrogeological test module, it should be ensured that the 2# water pressure sensor is below the sliding surface; at least one moisture content sensor should be below the sliding surface; and a moisture content sensor should be arranged near the sliding surface.

[0083] The moisture content sensor includes but is not limited to any one or combination of the following: resistance method moisture content sensor, tensiometer method moisture content sensor, neutron method moisture content sensor, gamma-ray method moisture content sensor, standing wave ratio method moisture content sensor, time domain reflection method moisture content sensor, and high-frequency oscillation method moisture content sensor.

[0084] The sensor in the hydrogeological test module measures the soil moisture content at the location, and the soil moisture content of each sensor is plotted along the sensor arrangement direction to draw a sliding body moisture content curve, which intuitively and truly reflects the change of the sliding body soil moisture content and the change of the sliding surface position moisture content, and landslide early warning and prediction can be carried out; in combination with landslide displacement monitoring data, a deformation-hydrogeological correlation factor is established to carry out landslide deformation prediction and improve the reliability of early warning and prediction; through the determination of the landslide moisture content, the saturated zone and the groundwater flow zone in the sliding body can be circled, and the stability of the landslide under the action of groundwater can be effectively analyzed to provide mechanical support for landslide early warning.

[0085] The signal acquisition and transmission module collects and sends out the on-site test data of the sensors in the hydrogeological test module, so as to receive the hydrological data.

[0086] The signal receiving module receives the data transmitted by the signal acquisition and transmission module in the indoor or workstation at the remote end and enters the monitoring information processing system.

Claims

1. An automated monitoring device for landslide hydrogeological conditions, characterized by: The hydrogeological testing module (10), the signal acquisition and transmission module (11) and the signal receiving module (12) are included. The hydrogeological testing module (10) includes a test bag (5), a permeation body (6), a water pressure sensor (7), a water content sensor (8) and an impermeable body (9). The test bag (5) is filled with the permeation body (6), which wraps the water pressure sensor (7) or the water content sensor (8) in the test bag (5). The impermeable body (9) is a strip-shaped tube capsule structure, and a plurality of test bags (5) are arranged on the outside of the impermeable body (9) along the length direction of the impermeable body (9), and the test bag with the water pressure sensor (7) is arranged on the top and bottom of the outside of the impermeable body (9). The hydrogeological testing module (10) is located in the sliding body (3). A plurality of drill holes (4) are dug in the sliding body (3) at intervals, and the hydrogeological testing module (10) is arranged in the drill hole (4). The drill hole (4) penetrates through the sliding surface (2) and ends in the stable bedrock, and the sliding surface (2) divides the drill hole (4) into a sliding body section L1 and a sliding bed section L2. The signal acquisition and transmission module (11) is arranged on the landslide (1) and connected with the wires of the water pressure sensor (7) and the water content sensor (8).

2. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: The test bag (5) is a geotextile bag.

3. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: The permeation body (6) is the landslide soil or sandy soil in the landslide range.

4. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: The impermeable body (9) is an impermeable membrane tube capsule filled with impermeable cement mortar, and the diameter of the impermeable membrane tube capsule after filling is matched with the diameter of the drill hole (4). The bottom and side wall of the impermeable membrane tube capsule are closed, and the top is open.

5. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: Two water pressure sensors (7) are arranged in the hydrogeological testing module (10), which are 1# water pressure sensor (701) and 2# water pressure sensor (702). The 1# water pressure sensor (701) is located in the sliding body section L1 and close to the slope surface of the landslide (1); and the 2# water pressure sensor (702) is located in the sliding bed section L2.

6. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: At least one water content sensor (8) is arranged below the sliding surface (2).

7. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: At least one water content sensor (8) is arranged within 1m from the sliding surface (2).

8. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: The distance between adjacent water content sensors (8) is 0.5-2m.

9. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: The water content sensor (8) includes one or more of any combination of resistance method water content sensor, tensiometer method water content sensor, neutron method water content sensor, gamma-ray method water content sensor, standing wave ratio method water content sensor, time domain reflectometry method water content sensor, and high frequency oscillation method water content sensor.

10. The automated monitoring device for hydrogeological conditions of landslides according to claim 1, characterized in that: The height of the sliding bed section L2 is 1m-3m.

Images