In this paper, taking a typical roadway in broken and soft rock strata No. 10 Mine of Pingdingshan coal field as an example, the deformation failure mechanism mass was deeply analyzed based on testing. Then technology high-strength prestressed bolt-grouting support, such new combined grouting bolt, hollow anchor cable, were developed. Based this, repair support scheme using designed for on-site...

Information on reactions of delphinids to biopsy sampling and healing of associated biopsy wounds is limited. Results presented here report on the behavioral responses of free-ranging bottlenose dolphins (Tursiops truncatus) to remote biopsy sampling procedures, and provide information on stages of surgical biopsy wound repair. Biopsy samples of free-ranging dolphins were collected between Febr...

BACKGROUND Syndesmotic diastasis is a common injury. Syndesmotic bolt and tightrope are two of the commonly used methods for the fixation of syndesmotic diastasis. Syndesmotic bolt can be used to reduce and maintain the syndesmosis. However, it cannot permit the normal range of motion of distal tibiofibular joint, especially the rotation of the fibula. Tightrope technique can be used to provide...

Fully grouted bolts are widely used in engineering. In order to deeply understand the load-transfer mechanism of a fully bolt, it is necessary analyze and study its mechanical behavior under axial cyclic load. First all, based on idea discretization force balance analysis each mass spring element, this proposes method for analyzing bolt—the element method. Second, model bolt established by usin...

Because injury to the brain stem is usually associated with diffuse brain damage, recovery is rare and mortality high. A non-fatal penetrating injury involving the brain stem is described from a crossbow bolt. The diagnosis and management of such injuries are discussed.

We present newM2 and M5 brane solutions in M-theory based on transverse AtiyahHitchin space and other self-dual geometries. One novel feature of these solutions is that they have bolt-like fixed points yet still preserve 1/4 of the supersymmetry. All the solutions can be reduced down to ten dimensional intersecting brane configurations. EMail: [email protected] EMail: [email protected]...

In this research an analysis for improving the fatigue behavior (safety factor of fatigue) non- articular prosthetic foot (SACH) in region (Bolt Adapter).The laser peening was carried to specimens properties bolt’s material. The tests mechanical and were material that bolt manufacture from it, a where failure occur inserted these program engineering (Ansys) calculate safety fatigue. results sho...

The stability of surrounding rock is the basic guarantee underground space engineering safety. large deformation a roadway’s very common phenomenon during excavation coal mine roadways or mining, especially in deep soft mining roadways. With increase depth and stress, it important to prevent disasters caused by deformation. This work aims conduct an optimization design roadway support for mines...

Mine earthquake, as an underground disaster that occurs frequently, has a great impact on coal mine roadway and support. The stability analysis of the bolt support in under different earthquake magnitudes is key issue to be solved urgently mining fields. This paper attempted simulate occurrence state with explosive blasting process verified it actual microseismic monitoring data. ANSYS/LSDYNA s...

In order to study the stability control mechanism of deep soft rock roadway and active support technology anchor-grouting flexible bolt, this paper takes west wing transportation Yuandian No. 2 Coal Mine Huaibei Mining Co., Ltd., Huaibei, China as research background. By analyzing occurrence conditions failure characteristics surrounding structural mechanical properties combined with elastic–pl...