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Wuhan Dida Huarui Geological Technology Co., Ltd
CUGTEM-GK Ⅱ Transient Electromagnetic Instrument (Tunnel/Tunnel Advance Prediction)
NegotiableUpdate on 10/16
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Overview
The application areas of CUGTEM-GK Ⅱ transient electromagnetic instrument (tunnel/tunnel advance prediction) include: 1. Advanced detection of the entire space environment such as tunnels, tunnels, vertical shafts, and adits, with a distance of up to 150 meters. 2. The CUGTEM-GK Ⅱ transient electromagnetic instrument is mainly used for geological condition detection in the unexcavated section in front of the tunnel face, as follows: (1) Comparing the geological and hydrological data provided in the design drawings, predicting changes in geological and hydrological conditions and their impact on construction, and proposing design schemes. (2) Forecast the water content of water faults, fissure water, caves, and karst caves within a 150 meter radius in front of and around the palm; (3) Advanced geological forecasting provides reliable geophysical basis for design and construction; Reduce the risk of geological disasters; To prepare construction documents
Product Details
Application fields of the CUGTEM-GK Ⅱ transient electromagnetic instrument from Dida Huarui
1Advanced detection of full space environments such as tunnels, tunnels, vertical shafts, and adits, with a distance of up to150rice
2. The CUGTEM-GK Ⅱ transient electromagnetic instrument is mainly used for geological condition detection in the unexcavated section in front of the tunnel face, as follows:
(1) Based on the geological and hydrological data provided in the design drawings, predict changes in geological and hydrological conditions and their impact on construction, and propose a design plan.
(2)Forecast the area in front of and around the palm150Within a meter range, there are water faults, fissure water, karst caves, and their water content;
(3) Advanced geological forecasting provides reliable geophysical basis for design and construction; Reduce the risk of geological disasters; Provide reliable geological data for the preparation of construction documents.
3. The CUGTEM-GK Ⅱ transient electromagnetic instrument is mainly used for advanced detection of geological structures and water hazards in non coal mine mountain tunnels, as follows:
(1) Metal, non metalDetection of water source richness distribution and water bearing structure in front of the excavation head of underground mining tunnels in metal mines
(2) Detection of hydraulic fracturing zones induced by mining disturbances on the roof and floor of underground mining tunnels in metal and non-metal mines;
(3) Advanced detection and prediction provide guidance for the excavation direction and water prevention work of underground mining tunnels in metal and non-metal mines;
4. Detecting the direction of mineral veins underground in metal mines;
5Detection of water bearing structures around underground chambers and detection of underground metal pipelines on the ground;
6. Ground and underground150mShallow water bearing structures and fault detection within.
Di Da Hua RuiMain features of CUGTEM-GK Ⅱ transient electromagnetic instrument
1CUGTEM-GK Ⅱ Transient Electromagnetic InstrumentSmall size, light weight, and easy construction. Adopting an integrated design, the receiver, transmitter, and amplifier are combined into one for easy portability and construction. ²
2High performance and low power consumption. Using an industrial computer as the core controller not only improves performance but also reduces power consumption.
3、The CUGTEM-GK Ⅱ transient electromagnetic instrument isThe only small coil and high-power transient electromagnetic detection equipment used in domestic tunnels, with a transmission current of up to60ATo maximize detection accuracy.
4Reflective LCD screen with extremely low power consumption, capable of working under direct sunlight.
5Advanced interpretation software system. The full space interpretation software system for underground (underground tunnels, tunnels, etc.) work is user-friendly and has professional drawings.
▲CUGTEM-GKⅡSeries transient electromagnetic instrument host
▲ CUGTEM series transient electromagnetic instrument advanced exploration and launch/Receiving device
Advanced Exploration Engineering Example (CUGTEM-GK)Ⅱ）
Exploration unit and time: A tunnel in Maojiahe
Exploration content: Identify the possible water rich situation in the goaf ahead of the roadway
● Device layout: Dig along the roadway and arrange survey lines3Strip (top plate tilted upwards)30Degree, bedding, and inclined downward bottom plate30By moving the transmitting and receiving coils in the digging head in the direction of degrees, a3Actual measured profile of advanced detection
● Actual measurement diagram:
Advanced Exploration Engineering Example (CUGTEM-GK)Ⅱ）
●Exploration unit and time:A certain power station
●Exploration content:Identify the advance forecast ahead during the excavation process of the diversion tunnel
●Device layout:The construction layout and workload of the transient electromagnetic method exploration test are as follows: survey lines are arranged along the excavation face of the diversion tunnel3 Strip (up)45 Angle, horizontal forward, downward45 Angle in three directions), throughMove the transmitting and receiving coils on the palm surface to form three measured profiles for advanced detection.
●Actual measurement diagram:
Interpretation of fan-shaped cross-section data with equal resistivity on palm surface
Fan shaped diagram of equal resistivity cross-section of palm face (bedding)
Fan shaped diagram of equal resistivity cross-section of palm face (inclined downward at 45 °)
Three actual fan-shaped profiles were obtained through advanced detection of the palm face, including a 45 º elevation detection fan-shaped profile (top plate) above the palm face, a fan-shaped profile (bedding) in front of the palm face, and a 45 º depression detection fan-shaped profile (bottom plate) below the palm face. The blue area in the figure is the low resistance abnormal area, and there is one low resistance abnormal area in each of Figure 4, Figure 5, and Figure 6, which are listed as low resistance abnormal areas 1, 2, and 3 respectively
Data Explanation:
There is a low resistance anomaly at a distance of 50m from the palm facing forward, and all three exhibit low resistance anomalies. Based on the geological data on site, it is suspected that there is a karst cave present.
Based on the division of three abnormal areas, it can be inferred that this is a connected karst cave. According to on-site data, there is a karst cave present in the direction of the forward right corner, and the cave is exposed with water content inside, indicating a low resistance body abnormal reaction.
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