Results 191 to 200 of about 128,534 (314)

New York City Transit Authority and Subway Surface Supervisors Association (SSSA), (1998) (MOA) [PDF]

, 1998

core   +4 more sources

Investigation on performance of steel strut servo system braced deep excavation adjacent to existing buildings: a case study. [PDF]

Sci Rep
Zhao P, Qiu Y, Liu F, Wang Z, Guo P.
europepmc   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Optimal selection of a metro tunnel excavation method using AHP and TOPSIS: a case study of Tehran metro. [PDF]

Sci Rep
Rostami A, Chakeri H, Shahriar K, Mousapour H.   +3 more
europepmc   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Comparison of pre- and post-natal environmental exposures in United States versus Brazilian patients with juvenile dermatomyositis. [PDF]

Clin Exp Rheumatol
Arabi TMA, Farhat SCL, Valoes CC, Shenoi S, Kim S, Carneiro BOL, Rider LG, Elias AM.   +7 more
europepmc   +1 more source

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Research on the material properties of concrete in subway stations after in service for 50 years. [PDF]

Sci Rep
Zhang B, He S, Ma J, He J, Li Y, Zheng J.   +5 more
europepmc   +1 more source

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

Deep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source