Rock burst prevention supporting frame for mining

Abstract

The utility model belongs to the technical field of roadway supporting, and particularly relates to a rock burst prevention supporting frame for mining, which comprises a self-monitoring yielding supporting anchor rod structure, the self-monitoring yielding supporting anchor rod structure comprises an anchor rod, the anchor rod is anchored in a rock wall around a roadway, and a lower pressing plate and an upper pressing plate are slidably sleeved on the anchor rod. A buffer plate is installed between the lower pressing plate and the upper pressing plate and is of an elastic arc-shaped steel plate structure, the anchor rod is in threaded connection with a nut, a monitoring assembly is further installed between the lower pressing plate and the upper pressing plate, an anchor net is hung on the anchor rod between the lower pressing plate and the rock wall, and a concrete reinforcing layer is formed on the outer side of the anchor net in a spraying and covering mode. And an observation window is formed in the concrete reinforcing layer around the self-monitoring yielding support anchor rod structure. The buffer plate is simple in structure and convenient to process, and can stably play a role in resistance-increasing yielding support between the lower pressing plate and the upper pressing plate; and the design of the monitoring assembly is matched with the arrangement of the observation window, so that personnel can intuitively judge the occurrence position of local impact.

Description

TECHNICAL FIELD

[0001] The utility model belongs to roadway support technical field, concretely relates to a mining is with the support frame of preventing impact ground pressure. BACKGROUND

[0002] The utility model discloses a big deformation surrounding rock self -adaptation anchor rod cable support structure discloses a big deformation surrounding rock self -adaptation anchor rod cable support structure, including anchor rod body, the outside of anchor rod body is sleeved with anchor rod tray and detachable pressure -yielding piece, the outside of anchor rod body is connected with anchor rod nut with screw thread, detachable pressure -yielding piece sets up between anchor rod nut and anchor rod tray, detachable pressure -yielding piece includes sliding sleeve, one end of sliding sleeve is connected with end plate, the other end of sliding sleeve is connected with a plurality of multistage elastic support, multistage elastic support is composed of first pressure -yielding plate and second pressure -yielding plate, and the end of sliding sleeve between adjacent multistage elastic support is provided with rigid support. Multistage elastic support can step elastic support anchor rod tray, realize detachable repeated utilization's gradient resistance type pressure -yielding, with effectively reduce the cost of support.

[0003] However, the above structure has the following problems: although the above support structure realizes resistance type pressure -yielding support in impact ground pressure by using multistage elastic support, however, the multistage elastic support therein is not easy to process, and the manufacturing cost is high;In addition, the staff cannot intuitively judge whether the support structure is impacted by local ground pressure, so the support hidden danger cannot be timely inspected. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model aims at providing a mining is with the support frame of preventing impact ground pressure, solving the problems that the existing support structure of preventing impact ground pressure has higher device manufacturing cost when realizing gradient resistance type pressure -yielding support, and the staff cannot intuitively judge whether the support structure is impacted by local ground pressure.

[0005] To achieve the above purpose, the utility model adopts the technical scheme: a mining is with the support frame of preventing impact ground pressure, including self -monitoring pressure -yielding support anchor rod structure, the self -monitoring pressure -yielding support anchor rod structure includes anchor rod, the anchor rod is anchored in the rock wall around roadway, the anchor rod is slidably sleeved with lower pressure plate and upper pressure plate, and the buffer plate is installed between the lower pressure plate and the upper pressure plate, the buffer plate is the arc steel plate structure with elasticity, the anchor rod is connected with the nut with screw thread, the monitoring assembly is further installed between the lower pressure plate and the upper pressure plate, the anchor net is hung on the anchor rod between the lower pressure plate and the rock wall, the outer side of the anchor net is sprayed and formed with the concrete reinforcing layer, and the observation window is formed on the concrete reinforcing layer around the self -monitoring pressure -yielding support anchor rod structure.

[0006] The utility model discloses beneficial effect is: the simple structure of buffer board is convenient for processing, can play the steady increase resistance type pressure supporting effect between lower pressing plate and upper pressing plate.

[0007] In order to guarantee the support stability of buffer board;

[0008] As the further improvement of the above technical scheme: the number of buffer board is three, and is arranged equidistantly around the axis of anchor rod.

[0009] The beneficial effect of the improvement is: three equidistantly arranged buffer boards can cooperate with each other, so that the observation window plays a stable increase resistance type pressure supporting effect.

[0010] In order to guarantee the stability of buffer board installation;

[0011] As the further improvement of the above technical scheme: the lower pressing plate and the upper pressing plate are provided with strip-shaped groove sink structure that is adapted to the both ends of the buffer board.

[0012] The beneficial effect of the improvement is: the strip-shaped groove sink structure for inserting the buffer board on the lower pressing plate and the upper pressing plate can effectively guarantee the installation stability of the buffer board.

[0013] In order to accurately detect the occurrence of impact situation;

[0014] As the further improvement of the above technical scheme: the monitoring assembly comprises adjusting bolt and ball hinge, the opposite end of adjusting bolt and ball hinge is equipped with sleeve, and the sleeve is adapted to be sleeved on both ends of glass fluorescent rod.

[0015] The beneficial effect of the improvement is: in the process of buffer board deformation under pressure, the glass fluorescent rod is extruded and deformed, so that the internal glass tube is broken, the internal two kinds of solvents are mixed to generate fluorescence reaction, and the occurrence of impact phenomenon is directly reminded.

[0016] In order to conveniently install glass fluorescent rod;

[0017] As the further improvement of the above technical scheme: the adjusting bolt is screw connected with nut.

[0018] The beneficial effect of the improvement is: the operator can adjust the distance between adjusting bolt and ball hinge by rotating adjusting bolt, so that the glass fluorescent rod is conveniently installed.

[0019] In order to guarantee the stability of glass fluorescent rod installation;

[0020] As the further improvement of the above technical scheme: the ball hinge seat in ball hinge is installed on the lower pressing plate, and the ball head in ball hinge is connected with sleeve.

[0021] The beneficial effect of the present improvement is that the buffer plate can drive the glass fluorescent rod to bend at multiple angles when it is deformed by impact, and the glass tube inside the glass fluorescent rod is effectively broken.

[0022] The parts not involved in the device are the same as or can be implemented by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a sectional view of the present application;

[0024] Fig. 2 is a structural schematic view of the self-monitoring yielding support anchor rod structure in the present application;

[0025] Fig. 3 is a sectional view of the self-monitoring yielding support anchor rod structure in the present application;

[0026] In the figure: 1, anchor net; 2, self-monitoring yielding support anchor rod structure; 3, concrete reinforcing layer; 4, observation window; 5, anchor rod; 6, lower pressing plate; 7, buffer plate; 8, upper pressing plate; 9, nut; 10, monitoring assembly; 101, adjusting bolt; 102, spherical hinge; 103, sleeve; 104, glass fluorescent rod. DETAILED DESCRIPTION

[0027] In order to make the skilled in the art better understand the technical scheme of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0028] As Figs. 1-3: A mining anti-impact ground pressure support frame is shown, which comprises a self-monitoring pressure-releasing support anchor rod structure 2, the self-monitoring pressure-releasing support anchor rod structure 2 comprises an anchor rod 5, the anchor rod 5 is anchored in the rock wall around the roadway, a lower pressing plate 6 and an upper pressing plate 8 are slidably sleeved on the anchor rod 5, a buffer plate 7 is installed between the lower pressing plate 6 and the upper pressing plate 8, the buffer plate 7 is an arc-shaped steel plate structure with elasticity, a nut 9 is threadedly connected with the anchor rod 5, a monitoring assembly 10 is also installed between the lower pressing plate 6 and the upper pressing plate 8, an anchor net 1 is hung on the anchor rod 5 between the lower pressing plate 6 and the rock wall, a concrete reinforcing layer 3 is formed on the outer side of the anchor net 1, an observation window 4 is formed on the concrete reinforcing layer 3 around the self-monitoring pressure-releasing support anchor rod structure 2, the buffer plate 7 is simple in structure and convenient to process, and can play a stable and resistance-increasing pressure-releasing supporting role between the lower pressing plate 6 and the upper pressing plate 8; the design of the monitoring assembly 10 cooperates with the setting of the observation window 4, so that people can intuitively judge the occurrence position of local impact, the number of the buffer plate 7 is three, and the three buffer plates 7 are equidistantly arranged around the axis of the anchor rod 5, the three equidistantly arranged buffer plates 7 can cooperate with each other, so that the observation window 4 plays a stable and resistance-increasing pressure-releasing supporting role, strip-shaped groove sink structures suitable for inserting both ends of the buffer plate 7 are formed on the lower pressing plate 6 and the upper pressing plate 8, the sink grooves for inserting the buffer plate 7 formed on the lower pressing plate 6 and the upper pressing plate 8 can effectively ensure the installation stability of the buffer plate 7, the monitoring assembly 10 comprises an adjusting bolt 101 and a ball hinge 102, sleeves 103 are installed on the opposite ends of the adjusting bolt 101 and the ball hinge 102, in the process of pressure deformation of the buffer plate 7, the glass fluorescent rod 104 is extruded and deformed, so that the glass tube inside the glass fluorescent rod 104 is broken, so that the two kinds of solvents inside the glass fluorescent rod 104 are mixed to cause a fluorescent reaction, which directly reminds the occurrence of the impact phenomenon, the adjusting bolt 101 is threadedly connected with the nut 9, an operator can adjust the distance between the adjusting bolt 101 and the ball hinge 102 by rotating the adjusting bolt 101, so as to conveniently install the glass fluorescent rod 104, the ball hinge seat in the ball hinge 102 is installed on the lower pressing plate 6, the ball head in the ball hinge 102 is connected with the sleeve 103, the use of the ball hinge 102 enables the buffer plate 7 to bend the glass fluorescent rod 104 at multiple angles when the buffer plate 7 is impacted and deformed, so as to effectively break the glass tube inside the glass fluorescent rod 104.

[0029] The working principle of the technical scheme is as follows: the anchor rod 5 is installed in the rock wall around the roadway in the existing conventional manner, then the anchor net 1 is hung on the anchor rod 5, the lower pressing plate 6 and the upper pressing plate 8 are slid and sleeved on the anchor rod 5 and are threadedly connected with the nuts 9, the two ends of the buffer plate 7 are respectively placed in the sink grooves formed in the lower pressing plate 6 and the upper pressing plate 8, and then the nuts 9 are tightened to make the buffer plate 7 generate a pre-tightening force of a proper size, so that the anchor net 1 can keep a reliable supporting effect, then one end of the glass fluorescent rod 104 is inserted into one sleeve 103, the adjusting bolt 101 is screwed to reduce the distance between the two sleeves 103, so that the other end of the glass fluorescent rod 104 is inserted into the sleeve 103, finally the formwork is sleeved around the self-monitoring yielding supporting anchor rod structure 2, the concrete reinforcing layer 3 is sprayed on the anchor net 1 and the rock wall, and the formwork is removed to form the observation window 4 after the concrete reinforcing layer 3 is dried; when the local impact ground pressure occurs in the roadway, the rock wall pushes the lower pressing plate 6 to move, the lower pressing plate 6 pushes the buffer plate 7 to make the buffer plate 7 elastically deform, the self-monitoring yielding supporting anchor rod structure 2 can keep the overall supporting effect and achieve the effect of the resistance-increasing yielding supporting; meanwhile, the glass fluorescent rod 104 is extruded and deformed to make the internal glass tube break, so that the two kinds of solvents inside the glass tube are mixed to generate the fluorescent reaction, thereby directly reminding the occurrence of the impact phenomenon.

[0030] It should be noted that the terms "comprising", "containing", or any other similar term as used herein are intended to encompass a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] The principle and implementation mode of the present application are described by using specific examples, and the above examples are only used to help understand the method and core idea of the present application. The above description is only the preferred implementation mode of the present application, and it should be pointed out that due to the limited expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principle of the present application, and the above technical features can be combined in a proper way; the improvements, decorations, changes or combinations, or the direct application of the concept and technical scheme of the present application to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A rockburst protection support frame for mining, characterised in that: Self-monitoring yield support anchor rod structure (2) is provided, which comprises an anchor rod (5) anchored in the rock wall around the roadway, a lower pressing plate (6) and an upper pressing plate (8) slidably sleeved on the anchor rod (5), a buffer plate (7) installed between the lower pressing plate (6) and the upper pressing plate (8), the buffer plate (7) being an arc-shaped steel plate structure with elasticity, a nut (9) threadedly connected with the anchor rod (5), a monitoring assembly (10) installed between the lower pressing plate (6) and the upper pressing plate (8), an anchor net (1) hung on the anchor rod (5) between the lower pressing plate (6) and the rock wall, and a concrete reinforcing layer (3) formed on the outer side of the anchor net (1), wherein an observation window (4) is formed on the concrete reinforcing layer (3) around the self-monitoring yield support anchor rod structure (2).

2. The anti-blast ground pressure support frame for mining according to claim 1, characterized in that: The number of the buffer plates (7) is three, and the buffer plates (7) are equidistantly arranged around the axis of the anchor rod (5).

3. The anti-blast ground support frame for mining according to claim 1, characterized in that: The lower pressing plate (6) and the upper pressing plate (8) are provided with strip-shaped groove sink structures adapted to the two ends of the buffer plate (7).

4. The impact pressure support frame for mining according to claim 1, characterized in that: The monitoring assembly (10) comprises an adjusting bolt (101) and a ball hinge (102), and the adjusting bolt (101) and the ball hinge (102) are both provided with a sleeve (103) at the opposite end.

5. The impact ground pressure support frame for mining as claimed in claim 4, wherein: The adjusting bolt (101) is threadedly connected with the nut (9).

6. The impact ground pressure support frame for mining as claimed in claim 4, wherein: The ball hinge seat in the ball hinge (102) is installed on the lower pressing plate (6), and the ball head in the ball hinge (102) is connected with the sleeve (103).

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