Study on Safety Control of Large-Section Roadway with High Stress and Broken Surrounding Rock by Wen-qing Peng, Hao Zhu, Qi Wang, Gang Peng

“…Through the modeling analysis of FLAC3D numerical software and the comparison of various support schemes, it is concluded that, after the combined support method of “anchor, net, and spray + grouting + full-section anchor cable + floor anchor cable“ is adopted, the convergence of roof and floor is reduced by 508 mm, and the convergence of two sides is reduced by 663 mm. …”
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A Study of Safety Coefficient Determination and Support Parameter Optimization Based on Vulnerability Preevaluation by Minglei Zhang, Linsheng Gao, Yue Yang, Yidong Zhang, Ming Ji

“…Applying more accurately calculated strength to the anchor-bolt structure can effectively avoid the issue of overcompensation, thus reducing the cost and increasing the driving speed. …”
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Surrounding Rock Stresses on a Working Face-End Roof under Mining Influence by Kang Wang, Xinglong Huang, Haibo Li, Feng Zhang, Jiazhen Li, Zhijie Zhu

“…The surrounding rocks are in a stable state when the maximum stress of the surrounding rocks at the top corner of the reinforced anchor cable’s back-end is 26.1 MPa. The results show that cutting of the surrounding rocks at the top corner of the end and the reinforcement of the anchor cable can avoid the spalling and roof fall when the top corner of the end is affected by mining and can ensure that the end support advances and working face moves forward.…”
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Localization Algorithms in Large-Scale Underwater Acoustic Sensor Networks: A Quantitative Comparison by Guangjie Han, Aihua Qian, Chenyu Zhang, Yan Wang, Joel J. P. C. Rodrigues

“…The advantage of DV-hop and NLA is that the localization results do not rely on the number of anchor nodes; that is, only a small number of anchor nodes are needed for localization.…”
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Occurrence Mechanism of Roof-Fall Accidents in Large-Section Coal Seam Roadways and Related Support Design for Bayangaole Coal Mine, China by Shitan Gu, Bangyou Jiang, Gensheng Wang, Huabin Dai, Mingpeng Zhang

“…On that basis, a new supporting design is proposed, including a more reasonable arrangement of anchor cables and bolts, bolts with full-length anchorage which are applicable in cracked and water-rich roadway, high-strength anchor cables, and crisscrossed steel bands. …”
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Failure Mechanism and Stability Control of Surrounding Rock of Docking Roadway under Multiple Dynamic Pressures in Extrathick Coal Seam by Xiangye Wu, Shuai Wang, Chen Tian, Changxing Ji, Jingya Wang

“…The joint action of both is the mechanical mechanism that causes the plastic zone to expand in an asymmetric shape. (4) The coordinated control scheme of support (anchor bolt and anchor cable)—modified (grouting)—is adopted for the withdrawal roadway, and the coordinated control scheme of support (anchor bolt and anchor cable)—changing the cross-section shape of the roadway—is adopted for the docking roadway. …”
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Stability of Close Chambers Surrounding Rock in Deep and Comprehensive Control Technology by Weijian Yu, Fangfang Liu

“…Finally, the comprehensive control method was put forward with the water pump house as an example, that is, anchor, metal net, grouting, combined anchor cable and large-diameter anchor cable. …”
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PSO localization algorithm for WSN nodes based on modifying average hop distances by Yan-hang ZHAO, Zhi-hong QIAN, Xiao-hang SHANG, Chao CHENG

“…Regarding the relatively big errors with running the DV-hop localization algorithm in a network topology scenario,with which nodes randomly distributes,a particle swarm optimization localization algorithm for WSN nodes based on modifying average hop distance was proposed.changing the structure of data packets sent by anchor nodes with broadcasting,weighting the average hop distance error of reference anchor nodes to modify the average hop distance,and using an improved particle swarm algorithm to optimize iteration process for localization,thus,WPDV-Hop localization algorithm improvements were carried out.The simulation results indicate that the localization accuracy and the stability of the WPDV-Hop localization algorithm are significantly improved compared with the original algorithm.…”
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An Improved 3D Localization Algorithm for the Wireless Sensor Network by Yan Xu, Yi Zhuang, Jing-jing Gu

“…The concept of coplanarity is added into the traditional DV-Distance algorithm to reduce the positioning error caused by anchor nodes which are coplanar. Those unknown nodes which have been located are promoted to assistant anchor nodes to improve the positioning coverage. …”
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Research on the Reasonable Coal Pillar Width and Surrounding Rock Supporting Optimization of Gob-Side Entry under Inclined Seam Condition by Li-li Jiang, Zeng-qiang Yang, Gang-wei Li

“…The results show that the influence range of inside stress field is about 12.2∼12.8 m based on theoretical calculation result; under the influence of 10 m coal column, the overall deformation of the roadway is relatively small and within the reasonable range of engineering construction, so the width of the coal pillar along the return air roadway is set to 10 m which is more reasonable; the cross-section characteristics of special-shaped roadway lead to asymmetric stress distribution and fragmentation of surrounding rock, and then the asymmetric surrounding rock control technology under the coupling effect of roof prestressed anchor + high-strength single anchor cable + truss anchor cable support is proposed. …”
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Displacement Monitoring during the Excavation and Support of Deep Foundation Pit in Complex Environment by Zhouqiang Li

“…Taking a super large deep foundation pit project as an example, the horizontal displacement of crown beam and driveway, surface settlement, axial force of anchor cable, and underground water level in the construction process of the foundation pit are dynamically monitored and analyzed. …”
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Target Positioning with GDOP Assisted Nodes Selection Algorithm in Wireless Sensor Networks by Yunzhou Zhang, Dongfei Wei, Wenyan Fu, Bing Yang

“…In wireless sensor networks (WSN), the geometric distribution of anchor nodes has a significant influence on the positioning accuracy. …”
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Blind-Tie Remplissage: Technique and Sequence by Weston B. Gentry, M.D., Larry D. Field, M.D.

“…Various surgical techniques, anchor configurations, and tying mechanisms can be used to accomplish the remplissage procedure. …”
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Range-Free Localization Scheme in Wireless Sensor Networks Based on Bilateration by Chi-Chang Chen, Chi-Yu Chang, Yan-Nong Li

“…The proposed scheme uses only two anchor nodes and uses bilateration to estimate the coordinates of unknown nodes. …”
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Fracture Mechanics Models for Brittle Failure of Bottom Rails due to Uplift in Timber Frame Shear Walls by Joergen L. Jensen, Giuseppe Caprolu, Ulf Arne Girhammar

“…In partially anchored timber frame shear walls, hold-down devices are not provided; hence the uplift forces are transferred by the fasteners of the sheathing-to-framing joints into the bottom rail and via anchor bolts from the bottom rail into the foundation. …”
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CEO CHARACTERISTICS AND FINANCIAL REPORTING QUALITY IN LISTED CONSUMER GOODS COMPANIES IN NIGERIA by Nkiru Philomena Okika, Oyeneye Temitope Esther, Adedeji Daniel Gbadebo

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Stability Analysis of Rock Slope with Multilayer Weak Interlayer by Jinglong Li, Bo Zhang, Bin Sui

“…The potential sliding surface of the slope is determined to be the lower weak interlayer, and the weak interlayer after the anchor cable reinforcement is carried out. Numerical analysis shows that the reasonable application of anchor cables significantly improves slope stability. …”
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Bolt Detection Signal Analysis Method Based on ICEEMD by Chunhui Guo, Zhan Zhang, Xin Xie, Zhengyu Yang

“…The ICEEMD is used in order to decompose the anchor detection signal according to the approximate entropy of each intrinsic mode function (IMF). …”
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Research on Lifetime Optimization Algorithm for Mobile Wireless Sensor Network by Zhangquan Wang, Yourong Chen, Tiaojuan Ren, Sen Xu

“…When the position of sink node is fixed,the sensor nodes which are distributed around the sink node easily become hub nodes,forward a lot of data and fail prematurely.In order to solve this problem,the lifetime optimization algorithm for mobile wireless sensor network（LOAMWSN）was proposed.LOAMWSN algorithm considers the mobility of sink node,uses subtractive cluster algorithm to determine mobile anchor points of sink node,uses the nearest neighbor interpolation method to find the approximate solution of shortest route which traverse all mobile anchor points,uses distributed asynchronous Bellman-Ford algorithm to construct the shortest path tree in the k-hop range of sink node.Finally,sensor nodes transmit data to sink node along the shortest path tree.Simulation results show that in wireless sensor network of node uniform distribution and non-uniform distribution,LOAMWSN algorithm can prolong the network lifetime,balance the node energy consumption,and remain the average node energy consumption at a low level.Under certain conditions,it outperforms Ratio_w and TPGF algorithms.…”
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Application Study on Active Advanced Support Technology in Deep Roadway under Mine Goaf by Pengfei Jiang, Peng Xiao, Fanbao Meng, Suolin Jing, Jingkai Zhang, Ge Wang, Peng Zhao

“…To solve the problems of the rapid advance of the working face was delayed by complicated working procedure and high labor intensity, and the severe damage of roof bolt (anchor cable) induced by advanced hydraulic support, the deformation characteristics of surrounding rock, and the supporting principle of grouting truss anchor cable were analyzed theoretically by taking the roadway of 3_(down) coal seams 2326# working face in Sanhekou coal mine as the research object; then, the mechanical model of supporting structure of roadway under goaf was established. …”
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