CN-117381950-B - Model device for manufacturing certain-angle rock bedding and use method thereof

CN117381950BCN 117381950 BCN117381950 BCN 117381950BCN-117381950-B

Abstract

The invention discloses a model device for manufacturing a certain-angle rock bedding and a use method thereof, and relates to rock mechanical test equipment, wherein the model device comprises a base and a plurality of mould cylinders above the base, and the bottoms of the mould cylinders are connected with the base through supporting plates; the side wall of the mold cylinder is provided with joints corresponding to the upper layer of the seam of the test piece, two mold cylinders corresponding to the 0-90-degree layer seam are placed in a vertical state and a horizontal state, the bottoms of the mold cylinders corresponding to the 0-90-degree layer seam are connected with the base through an angle adjusting frame, mortar is injected into the mold cylinders layer by layer, isolating materials are filled in different layer seam positions, the angle adjusting frame is canceled after the mortar is filled with the slurry and solidified, the supporting plate and the mold cylinders are placed horizontally, and the mold cylinders are removed by using a demolding mechanism. The invention can manufacture cylindrical rock model test pieces with different bedding inclination angles at one time, and the test pieces can simulate actual rock with bedding surfaces. The model device provided by the invention can be disassembled and cleaned, is convenient to disassemble and assemble, can be repeatedly used, and is firm and durable.

Inventors

MA ZHENQIAN
HUANG QINGRONG
DUAN YONGXIN
WANG MINGZHONG
ZHOU LANG
Shuai Yunlin

Assignees

贵州大学
贵州盘江精煤股份有限公司

Dates

Publication Date: 20260505
Application Date: 20230517

Claims (6)

1. The model device for manufacturing the rock layer at a certain angle is characterized by comprising a base and a plurality of cylindrical mould cylinders, wherein the bottoms of the mould cylinders are respectively provided with a supporting plate connected with the base, the side wall of each mould cylinder is provided with a seam corresponding to the upper layer of the test piece, the mould cylinders can be filled with cement mortar for manufacturing the test piece, the two mould cylinders corresponding to the 0-90-degree layer seam are respectively placed on the base in a vertical state and a horizontal state, the bottoms of the mould cylinders corresponding to the 0-90-degree layer seam are connected with the base through an angle adjusting frame, and the bottom supporting plates of the mould cylinders corresponding to the 0-90-degree layer seam are connected with a demoulding mechanism and are used for removing the test piece in the mould cylinders; The mold cylinder is formed by assembling a plurality of sleeve sheets, the joint parts of two adjacent sleeve sheets correspond to the layer seam of a test piece, and the sleeve sheets of the assembled mold cylinder are fixedly connected through steel needles parallel to a bus of the mold cylinder; The two mold cylinders corresponding to the 0-90-degree layer seam are respectively a vertical mold cylinder and a horizontal mold cylinder, the mold cylinders corresponding to the 0-90-degree layer seam are respectively a 30-degree mold cylinder, a 45-degree mold cylinder, a 60-degree mold cylinder and a 75-degree mold cylinder, a plurality of vertical fixing plates are arranged outside the 30-degree mold cylinder, the 45-degree mold cylinder, the 60-degree mold cylinder and the 75-degree mold cylinder, and the lower ends of the fixing plates are fixed on the supporting plates; The angle adjusting frame comprises a supporting rod and a fastening piece at the end part of the supporting rod, wherein bending angles corresponding to a 30-degree mold cylinder, a 45-degree mold cylinder, a 60-degree mold cylinder and a 75-degree mold cylinder are respectively 150 degrees, 135 degrees, 120 degrees and 105 degrees, one end of the supporting rod is rotationally connected with the edge of the base, and the other end of the supporting rod can penetrate through a mounting hole on the supporting plate to be connected with the fastening piece; The using method of the model device comprises the following steps: Preparing cement mortar matched with actual rock components, and preparing an isolating material; step two, manufacturing a model device for manufacturing a rock layer at a certain angle; (1) Assembling a plurality of sleeve sheets into a mold cylinder, and fixing the mold cylinder by using a steel needle; (2) Brushing oil on the contact surface of the fixed plate and the mold cylinder; (3) For the mold cylinders corresponding to the layer seam between 0 degrees and 90 degrees, the supporting plate and the mold cylinders are supported by an angle adjusting frame, so that the inclination angle of the supporting plate is consistent with the upper layer seam angle of the test piece; step three, firstly injecting cement mortar into the mould cylinder to the first layer of seam-trimming position to form a layer of seam-trimming surface with a certain angle, and then paving a layer of thin isolation material; step four, taking down the supporting rod, and recovering the mold cylinder and the supporting plate to a horizontal state; step five, standing the prepared test piece in the mold cylinder for a period of time, and solidifying and drying the test piece; And step six, taking out the steel needle, beating the demoulding mechanism at the bottom of the supporting plate by using a hammer to separate the mould cylinder from the supporting plate, taking out the mould cylinder, removing the sleeve piece to obtain a layered test piece containing cylindrical rock, and directly taking out the test piece from the mould cylinder corresponding to the layered seams of 0-degree and 90-degree.
2. The device for forming a certain angle of rock laminate according to claim 1, wherein the side walls of the vertical mold cylinder, the 30-degree mold cylinder, the 45-degree mold cylinder, the 60-degree mold cylinder and the 75-degree mold cylinder are all connected and fixed through two steel needles, and the two ends of the side wall of the horizontal mold cylinder are respectively connected and fixed through four steel needles.
3. The apparatus for forming a pattern of angled rock laminate of claim 1, wherein the fastener comprises two nuts disposed on the upper and lower sides of the pallet, respectively.
4. The device for forming a certain angle of rock laminate according to claim 1, wherein the demoulding mechanism comprises a plurality of impact plates, a central rod and boundary rods, wherein the impact plates are arranged below the supporting plates, the impact plates are connected with the supporting plates through the central rod and the boundary rods, the upper ends of the central rods are fixed at the bottoms of the supporting plates and coincide with the central axis of the mould cylinder, the lower ends of the central rods penetrate through the impact plates, the boundary rods are radially arranged around the central rod, and the distance between the boundary rods and the central rod is between the inner radius and the outer radius of the mould cylinder.
5. The device for forming a certain angle of rock laminate according to claim 4, wherein the center rod and the boundary rod are screw rods with nuts, the nuts of the center rod and the boundary rod are tightly attached to the lower surface of the impact plate, the upper end of the boundary rod penetrates through the supporting plate to be abutted against the lower end of the side wall of the mold cylinder, and a locking nut matched with the upper surface of the impact plate is further arranged at the lower end of the boundary rod.
6. The modeling apparatus for making an angle of rock laminate as defined in claim 1, wherein an oil layer is provided on a mating surface between the fixing plate and the mold cylinder.

Description

Model device for manufacturing certain-angle rock bedding and use method thereof Technical Field The invention relates to the technical field of rock mechanics test equipment, in particular to a model device for manufacturing a certain-angle rock bedding and a using method thereof. Background Many layers of rock are distributed in nature and the layers differ in angle. Such rock is complex in mechanical properties and varies with the number of layers and the angle of the layers. When the rock mechanical test is carried out on the rock, a standard test piece is required to be manufactured indoors because of inconvenient field research, and similar materials are used for manufacturing the rock model test piece containing the bedding. It is therefore necessary to develop a device for relevant modeling to drive the study of the influence of bedding on rock performance. Disclosure of Invention The invention aims to provide a model device for manufacturing a rock bedding at a certain angle, and aims to solve the technical problems that field sampling research is inconvenient and research on rock mechanical properties under different angle bedding and quantity conditions cannot be carried out in the prior art. In order to solve the technical problems, the invention adopts the following technical scheme: A model device for manufacturing a certain-angle rock layer comprises a base and a plurality of cylindrical mould cylinders, wherein supporting plates connected with the base are arranged at the bottoms of the plurality of mould cylinders, joints corresponding to the upper layer of the test piece are arranged on the side walls of the mould cylinders, mortar for manufacturing the test piece can be filled in the mould cylinders, two mould cylinders corresponding to the 0-90-degree layer of the seam are respectively placed on the base in a vertical state and a horizontal state, the bottoms of the mould cylinders corresponding to the 0-90-degree layer of the seam are connected with the base through angle adjusting frames, and the supporting plates at the bottoms of the mould cylinders corresponding to the 0-90-degree layer of the seam are connected with a demoulding mechanism and are used for removing the test piece in the mould cylinders. Preferably, the mold cylinder is formed by assembling a plurality of sleeve sheets, the joint parts of two adjacent sleeve sheets correspond to the layer reason joint of the test piece, the sleeve sheets of the assembled mold cylinder are fixedly connected through steel needles parallel to the bus of the mold cylinder, steel needle holes matched with the steel needles are correspondingly formed in the sleeve sheets, the length of the steel needles is greater than the height of steel needle holes in the mold cylinder, and a baffle plate for blocking mortar from flowing out is arranged at the open end of the mold cylinder corresponding to the 90-degree layer reason joint. Preferably, the two mold cylinders corresponding to the 0-90-degree layer seam are respectively a vertical mold cylinder and a horizontal mold cylinder, the mold cylinders corresponding to the 0-90-degree layer seam are respectively a 30-degree mold cylinder, a 45-degree mold cylinder, a 60-degree mold cylinder and a 75-degree mold cylinder, a plurality of vertical fixing plates are arranged outside the 30-degree mold cylinder, the 45-degree mold cylinder, the 60-degree mold cylinder and the 75-degree mold cylinder, and the lower ends of the fixing plates are fixed on the supporting plate. Preferably, the side walls of the vertical mold cylinder, the 30-degree mold cylinder, the 45-degree mold cylinder, the 60-degree mold cylinder and the 75-degree mold cylinder are connected and fixed through two steel needles, and two ends of the side wall of the horizontal mold cylinder are connected and fixed through four steel needles respectively. Preferably, the angle adjusting frame comprises a supporting rod and a fastening piece at the end part of the supporting rod, bending angles of bending corresponding to a 30-degree die cylinder, a 45-degree die cylinder, a 60-degree die cylinder and a 75-degree die cylinder are respectively 150 degrees, 135 degrees, 120 degrees and 105 degrees, one end of the supporting rod is rotationally connected with the edge of the base, the other end of the supporting rod can penetrate through a mounting hole in the supporting plate to be connected with the fastening piece, and the other end of the supporting plate is rotationally connected with the edge of the base. Preferably, the fastening piece is two nuts, and the two nuts are respectively arranged on the upper side and the lower side of the supporting plate. Preferably, the demolding mechanism comprises a plurality of impact plates, a plurality of central rods and a plurality of boundary rods, wherein the impact plates are arranged below the supporting plates, the impact plates are connected with the supporting plates through the central ro