Yielding rock bolt support systems from Sinorock
Yielding have been developed to accommodate ground movement in shifting ground such as in coal operations; in creeping ground such as salt, trona, and potash; and in swelling ground associated with some clays. These systems, designed to remain intact despite ground movement, should enhance mine safety and help contain costs in areas where rebolting of rigid non-yielding systems is typically required. Four such systems were tested in straight tensile pulls in the laboratory. They include the Slip Nut System from Dywidag Systems International USA, Inc., Ischebeck`s bolt mounted Titan Load Indicator, Rocky Mountain Bolt Company`s Yielding Cable Bolt, and a rock bolt installed variation of the yielding steel post developed by RE/SPEC Inc. The first two systems are currently marketed products and the latter two are prototype systems. Each system responds to load and displacement by yielding in an unique manner. All are designed to yield at predetermined loads. A description of each system and its yield function is provided. Each system was tested over its prescribed yield range in a test machine. At least five tests were performed on each system. Each system yielded and continued to provide support according to its design. Each shows promise for ground control use in shifting or creeping rock. This work helps to illustrate the comparative differences in performance between these specialized systems and the applications where they may be most useful.
Other supplier products
|
|
Self drilling rock anchor bolt of Sinorock makes construction better |
In complex geological conditions, such as soft soil and high groundwater table areas, it is easy to happen slippage of soil body, instability of de... |
|
|
The character of rock bolt decides its use |
are an essential part of concrete construction. These are bolts, placed in the concrete with the threaded side up. They allow you to secure wall f... |
|
|
Sinorock produces a range of standard and high capacity self drilling rock bolt |
It is obvious that theself-drilling rock anchorhas the advantage that ordinary anchors do not have, and it is common practice to apply bushings to ... |
|
|
Rock bolt from Sinorock makes construction better |
is a structural system transferring tension to stable stratum or soil layer. It consists of anchor head, free segment and anchorage section, which... |
|
|
Self drill micro-piles are suitable for a variety of ground conditions |
The Structure of Sinorock is constituted with hollow bar body,self-drilling bit,centering adjustmen device,grout stop plug,coupling sleeve,bearing... |
供应产品
Same products
