ANTO MINING EQUIPMENT CO.,LTD
Quality testing of bolt support in deep roadways of mining districts(3)
5. Conclusions Through plenty of non-destructive testing of axial bolt load in deep roadways of mining districts, the use of pre-warning indicators of axial bolt load in the initial support stage, pre-mi
Quality testing of bolt support in deep roadways of mining districts(2)
3. Non-destructive testing techniques and equipment for bolt support quality In consideration of the coal industry standard in China: `Bolt support technical specifications` (MT/T 1104-2009) , the analysis of the characteristics of pre-tensioned and end-anchored bolts and the problems of in-situ bolt support quality indicates that the detection parameters of single bolt support quality include two main aspects. One is the f
Quality testing of bolt support in deep roadways of mining districts
Abstract The bolt support quality of coal roadways is one of the important factors for the efficiency and security of coal production. By means of a self-developed techni
Coal Mine Support W Type Steel Band
Features of W steel strip: 1. W steel strip is a serialized product, and different models can be selected according to dif
Cables A comprehensive review of cable support in underground mining has been given in a book by Hutchinson and Diederichs (1996). This book is highly recommended for anyone who is concerned with the selection and installation of cable support for either mining or civil engineering applications. Some of the main cable type
Industry, construction and agriculture From aerospace to reinforcement in construction,our welded mesh is used in all kinds of industries.Some applications are: guards, material handling,separation, security and decoration. We have a wide variety of standards available. If we do not have the specific
Welded wire mesh is constructed from rigid wires welded at every intersection to provide a very stable and uniform surface. By welding rather than weaving, the material holds its shape well without supports, allowing shearing, rolling,
Introduction Anchors and rock bolts, which are commonly assigned the general term "rock bolts",are used for rock reinforcement in Mining and Tunneling. Rock bolts limit the loosening of blocks out of the rock mass and shear displacements. Furthermore, the frictional force between individual rock layers is increased.
Rockbolts Mechanically anchored rockbolts Expansion shell rockbolt anchors come in a wide variety of styles but the basic principle of operation is the same in all of these anchors. As show
Rockbolts and dowels have been used for many years for the support of underground excavations and a wide variety of bolt and dowel types have been developed to meet different needs which arise in mining and civil engineering. Rockbolts generally consist of plain steel rods with a mechanical or chemical anchor at one end and
Split Set Friction Stabilizer Bolts
Specifications and performance The Split Set stabilizer is a slotted steel tube,with one end tapered for easy insertion into a drill hole. The other end has a welded ring flange to hold the bearing plate. The stabilizer is inserted into a hole slight
SPLIT SET Friction Rock Stabilizers
Working principle of Split Set Rock Bolts and Friction Bolts Break up sets are rock bolts with best 2 components, a tube and matching domed bearing plate. the excessive power steel tube is slotted along its duration. one stop is tapered for smooth insertion right into a drill hole and the other has a welded ring flange to preserve the bearing plate. with the bearing plate in vicinity,
ANTO hydraulic expansion bolts
Comparing with the resin bolt, the hydraulic expansion bolt has different anchoring mechanism and application advantage. According to the working mechanism of the hydraulic expansion bolt, its anchoring force is expressed in four forms including support anchoring force, tension anchoring force, expansion anchoring force and tangent anchoring force, and their va
Mechanical effect of hydraulic expansion bolt reinforcement of roadway surrounding rock
Since the bolt was used in coal mine support in the 1940s, bolt support has developed very rapidly due to its safety, high efficiency, and low cost, and has become the preferred main support method for coal mine roadways. However, when the coal seam group is mined at a very close distance, the integrity of the roof before the mining of the lower coal seam has been affected by the mining damage of the upper coal seam. Rock roadway, the use of traditional resin bolts to support such complex roadways can no longer control the overall stability
Mining Friction Bolts Features ●The Friction Bolt is manufactured from high strength steel tube which has a slot along its entire length. A ring, or collar, is welded on the outer end to hold a domed plate to the rock surface. ●The 33mm and 39mm Friction Bolt is
Anto Mining – Split Sets + Washers
The Product Split sets / friction anchors have been used as a primary roof support in the underground mining environment for many years. The anchor consists of an open seamed high tensile S
Advantages of using the Split Set / Friction Anchor system for Underground Roof Support in Mining
Split sets / friction anchors have been used as a primary roof support in the underground mining environment for many years. The anchor consists of an open seamed high tensile Supraform S420 steel tube with a face plate. One end is tapered for easy insertion into a pre-drilled hole. It is installed by driving the assembly into a marginally smaller hole than the split sets diameter and the welded steel ring then provides the necessary support to hold the washer plate i
ANTO Galvanized Reinforcing Welded Wire Mesh After inspection and loading,they will be shipped to Bulgaria.
Anchoring mechanism and application of hydraulic expansion bolts(3)
3.4 Construction technology (1) Drilling hole. The holes with the 38 mm diameter are drilled by the pneumatic drill according to the design angles of the bolts.
Anchoring mechanism and application of hydraulic expansion bolts(2)
3.Application of hydraulic expansion bolts used in soft rock roadway floor heave control 3.1 General condition of test roadway
Anchoring mechanism and application of hydraulic expansion bolts(1)
Anchoring mechanism and application of hydraulic expansion bolts used in soft rock roadway floor heave control 1. Introduction In a soft rock roadway, the floor heave is one of the major deformation forms of the surrounding rock, and its control is also one of the problems
ANTO Galvanized/Black Reinforcing Welded Wire Mesh
Reinforcing mesh for coal mine, diamond mesh for coal mine, warp and weft mesh, also known as coal mine protection mesh, coal mine safety mesh, and coal mine wire mesh High tensile strength, the mesh surface is flat, firm and not easy to be pulled apart, and the safety factor has reached the national standard. It is mainly used for artificial false roof in coal mines, which can reduce the cost of coal storage and save lead wire.
ANTO Mining 47mm Split Set Bolt
ANTO FB47 Split Set Bolt is used as a main support friction bolt stabilizer for underground or above ground projects in mines, tunnels or slopes or wherever reliable ground
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