Advanced geological drilling acquisition device

Abstract

The utility model discloses an advanced geological drilling collecting device, which comprises a trolley body and a cantilever, the cantilever comprises a mast, a power head, a front fixed pulley, a rear fixed pulley block, a winch, a steel wire rope, a drill rod and a clamping assembly, the mast is hinged on the trolley body through a hydraulic pitching adjusting mechanism, and the power head is assembled on a sliding rail of the mast in a sliding mode. The front fixed pulley is fixedly arranged at the front end of the sliding rail, the rear fixed pulley block is fixed at the tail end of the mast, the steel wire rope is wound on the winch for multiple circles, one end of the steel wire rope is connected with the front end of the power head through the front fixed pulley, and the other end of the steel wire rope is connected with the rear end of the power head through the rear fixed pulley block. One end of the drill rod is assembled on the power head, and the other end of the drill rod is clamped by the clamping assembly and extends towards the front end of the mast. The utility model has the advantages that the winch and the steel wire rope are combined to drive the power head, so that the power head can be stably driven to move back and forth; and based on the drilling speed, the torque and the rotating speed, the geological condition of the surrounding rock is analyzed and forecasted in advance.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an advanced geological drilling and collection device. Background Art

[0002] In tunnel construction, there are many problems, such as large deformation of soft rock, safety and durability of support structure, seepage erosion and large deformation, cracking of secondary lining, and sudden water and mud. These problems can be evaluated through risk assessment through advanced geological forecasting, thus reducing the accident rate, improving construction safety, and reducing project costs.

[0003] Advance drilling is a very intuitive and accurate technical means in advance geological prediction. The advance drilling method mainly uses a drill rod to drill into the rock mass to take samples for advanced geological prediction analysis. Summary of the invention

[0004] The purpose of the utility model is to provide an advanced geological drilling and collection device in accordance with the above-mentioned deficiencies of the prior art. The advanced geological drilling and collection device drives the forward and backward sliding of the power head by arranging a slide rail on the mast and driving the power head to slide forward and backward through a winch and a wire rope combination to facilitate the drilling sampling and retreat of the drill rod; at the same time, a speed sensor and a torque sensor are arranged on the power head, and a drilling speed sensor is arranged on the winch, so as to predict the geological conditions of the nearby surrounding rock through the speed, torque and drilling speed, and then determine the drilling position and density.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A kind of advanced geological drilling and collection device, characterized in that the advanced geological drilling and collection device comprises a trolley body and a cantilever hinged on the trolley body, the cantilever comprises a mast, a power head, a front fixed pulley, a rear fixed pulley group, a winch, a wire rope, a drill rod and a clamping assembly, the mast is hinged to the trolley body through a hydraulic pitch adjustment mechanism, the power head is slidably mounted on the slide rail of the mast, the front fixed pulley is fixedly arranged at the front end of the slide rail, the rear fixed pulley group is fixed to the end of the mast, the wire rope is wound around the winch for multiple turns, one end of the wire rope is connected to the front end of the power head through the front fixed pulley, and the other end of the wire rope is connected to the rear end of the power head through the rear fixed pulley group; one end of the drill rod is mounted on the power head, and the other end is clamped by the clamping assembly and extends to the front end of the mast.

[0007] The drill rod is a hollow drill rod.

[0008] The clamping assembly comprises a drill supporter and a drill clamper fixed to the front end of the mast, and the drill rod passes through the drill supporter and the drill clamper in sequence.

[0009] The rear fixed pulley block comprises a wheel frame fixed to the end of the mast and two pulleys mounted on the wheel frame. The steel wire rope passes through the two pulleys and is connected to the rear end of the power head.

[0010] The power head is provided with a rotation speed sensor and a torque sensor, and the winch is provided with a drilling speed sensor.

[0011] The advantages of the utility model are:

[0012] (1) The advanced geological drilling and collection device can be used for tunnel advanced geological drilling, coring, pipe shed, anchor drilling, etc. It has the advantages of full functions, multiple uses, 360-degree full coverage of the operating range, and fast construction speed;

[0013] (2) The winch and wire rope are combined to drive the power head, which can achieve stable driving of the power head forward and backward;

[0014] (3) Based on drilling speed, torque and rotation speed, advanced analysis and prediction of surrounding rock geological conditions can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the advanced geological drilling and collection device in the utility model;

[0016] Figure 2 It is a structural detail diagram of the cantilever in the utility model. DETAILED DESCRIPTION

[0017] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0018] like Figure 1-2 The symbols in the figure are: trolley body 1, hydraulic pitch adjustment mechanism 2, cantilever 3, mast 31, power head 32, clamping assembly 33, drill clamp 33a, drill support 33b, winch 34, rear fixed pulley group 35, front fixed pulley 36, wire rope 37.

[0019] Example: Figure 1 , 2 As shown, the present embodiment specifically relates to an advanced geological drilling and collection device, which includes a trolley body 1 and a cantilever 3 hinged to the trolley body 1. The middle position of the cantilever 3 is hinged to the front part of the trolley body 1 through a hydraulic pitch adjustment mechanism 2. The hydraulic pitch adjustment mechanism 2 is mainly used for adjusting the posture of the cantilever 3. Its specific structure is a conventional structure and will not be repeated here.

[0020] like Figure 1 , 2As shown, the boom 3 includes a mast 31, a power head 32, a front fixed pulley 36, a rear fixed pulley block 35, a winch 34, a wire rope 37, a drill rod and a clamping assembly 33. The main body of the boom 3 is the mast 31, and a slide rail (not shown in the figure) is laid along the longitudinal direction of the mast 31. The power head 32 can be slidably mounted on the slide rail. The winch 34 is installed on the lower surface of the mast 31, and the winch 34 is installed near the end of the mast 31; the front fixed pulley 36 is fixed to the front end of the mast 31, and the rear fixed pulley block 35 is fixed to the end of the mast 31. The steel wire rope 37 is wound several times on the drum of the winch 34, and sufficient friction is obtained between the steel wire rope 37 and the drum of the winch 34 by winding. One end of the steel wire rope 37 is passed through the rear fixed pulley group 35 set at the end of the mast 31 and fixedly connected with the rear end of the power head 32, while the other end of the steel wire rope 37 is turned through the front fixed pulley 36 and fixedly connected with the front end of the power head 32. A plurality of small guide wheels for guiding and limiting the steel wire rope 37 are arranged at intervals on the lower surface of the mast 31. Among them, the rear fixed pulley group 35 includes a wheel frame fixed to the end of the mast 31 and two pulleys installed on the wheel frame. The steel wire rope 37 is passed through the two pulleys and connected to the rear end of the power head 32. Ensure that the steel wire rope 37 is in a tensioned state, and the forward or backward pulling operation of the power head 32 can be realized through the forward and reverse control of the winch 34, so that the power head 32 can move forward and backward along the slide rail.

[0021] like Figure 1 , 2 As shown, the end of the drill rod is installed in the power head 32, which drives it to rotate and drill forward or backward. The clamping assembly 33 is fixed to the front end of the mast 31. The front end of the drill rod is clamped and limited by the clamping assembly 33. The clamping assembly 33 includes a drill support 33b and a drill clamp 33a arranged in sequence, wherein the drill support 33b is used to allow the drill rod to pass through and limit its circumferential position, and the drill clamp 33a is used to allow the drill rod to pass through and clamp and fix it. The drill rod adopts a hollow drill rod structure. After drilling and sampling, the drill rod is withdrawn to extract the rock sample retained in the drill rod. The drilling process is to push the drill rod into the rock mass section by section, and clamp the drill rod by the clamping assembly 33 to limit the position. Only the first few drill rods are hollow and can be used for sampling. For example, if you want to drill a rock mass 90-100 meters away, assuming that each rod is 5 meters long, the first two rods are hollow and used for sampling. They are connected and pushed in one by one, with a total of 20 sections of drill rod. After all 20 sections of drill rod are drilled in, they are taken out one by one.

[0022] like Figure 1 , 2 As shown, a rotation speed sensor and a torque sensor are provided on the power head 32 , and a drilling speed sensor is provided on the winch 34 , that is, the corresponding drilling speed of the drill rod can be obtained by converting the rotation speed of the winch 34 .

[0023] like Figure 1 , 2 As shown, the method for rock mass prediction using the advanced geological drilling and acquisition device in this embodiment includes the following:

[0024] (1) Rod change: The drilling speed and torque change points are the same, the thrust and rotation speed have almost no change, and the drilling speed, torque and thrust have the same amplitude except for the change point. The change may be caused by the pullback when changing the drill rod.

[0025] (2) Cave: The drilling speed suddenly increases, and the torque, rotation speed and propulsion force suddenly become zero. It is initially judged to be a cave. Additional drilling holes can be added to confirm the size of the cave.

[0026] (3) Integrity of rock formation: The drilling speed, torque thrust and rotation speed change steadily, and it is preliminarily determined that the rock formation is intact and the next step of identification is carried out in combination with the survey data.

[0027] (4) Soft layer: The drilling speed suddenly drops, the torque increases, the propulsion force decreases, and at the same time, it is difficult to remove the rock on site and the return water is colored. It is initially determined to be a soft layer, and the rock characteristics are determined in combination with the removal of rock.

[0028] (5) Rock formation becomes harder: The drilling speed decreases, the torque remains basically unchanged, the thrust remains unchanged or increases, and the rotation speed remains basically unchanged. It is preliminarily determined that the hardness of the rock formation on the drilling surface has increased, which can be further determined in combination with the removal of mucking.

[0029] (6) Small cavities, cracks (open) or thin interlayers: The drilling speed suddenly increases and then drops back, the torque and rotation speed decrease, and the propulsion force suddenly decreases. Combined with the actual strata, if the strata are highly weathered, it is more likely to be muddy interlayers, and if the strata are weakly karst, it is more likely to be cavities.

[0030] (7) Broken rock formation: The drilling speed fluctuates frequently but the peaks and troughs are close, the torque increases slightly, and the propulsion force remains unchanged. It is preliminarily determined to be a broken rock formation. The degree of rock fragmentation can be determined based on the frequency of changes in the peaks and troughs. At the same time, it can be determined based on the water supply and return water conditions during the drilling process. If the return water decreases, it is likely to be a broken rock formation.

[0031] The beneficial effects of this embodiment are:

[0032] (1) The advanced geological drilling and collection device can be used for tunnel advanced geological drilling, coring, pipe shed, anchor drilling, etc. It has the advantages of full functions, multiple uses, 360-degree full coverage of the operating range, and fast construction speed;

[0033] (2) The winch and wire rope are combined to drive the power head, which can achieve stable driving of the power head forward and backward;

[0034] (3) Based on drilling speed, torque and rotation speed, advanced analysis and prediction of surrounding rock geological conditions can be achieved.

Claims

1. An advanced geological drilling and collection device, characterized in that The advanced geological drilling and collection device includes a trolley body and a cantilever hinged on the trolley body, the cantilever includes a mast, a power head, a front fixed pulley, a rear fixed pulley group, a winch, a wire rope, a drill rod and a clamping assembly. The mast is hinged to the trolley body via a hydraulic pitch adjustment mechanism, the power head is slidably mounted on the slide rail of the mast, the front fixed pulley is fixedly arranged at the front end of the slide rail, the rear fixed pulley group is fixed to the end of the mast, the wire rope is wound around the winch for multiple turns, one end of the wire rope is connected to the front end of the power head via the front fixed pulley, and the other end of the wire rope is connected to the rear end of the power head via the rear fixed pulley group; one end of the drill rod is mounted on the power head, and the other end is clamped by the clamping assembly and extends to the front end of the mast.

2. The advanced geological drilling and collection device according to claim 1, characterized in that The drill rod is a hollow drill rod.

3. The advanced geological drilling and collection device according to claim 1 or 2, characterized in that The clamping assembly comprises a drill supporter and a drill clamper fixed to the front end of the mast, and the drill rod passes through the drill supporter and the drill clamper in sequence.

4. The advanced geological drilling and collection device according to claim 1, characterized in that The rear fixed pulley block comprises a wheel frame fixed to the end of the mast and two pulleys mounted on the wheel frame. The steel wire rope passes through the two pulleys and is connected to the rear end of the power head.

5. The advanced geological drilling and collection device according to claim 1, characterized in that The power head is provided with a rotation speed sensor and a torque sensor, and the winch is provided with a drilling speed sensor.

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