Deep mining has started in the Huaibei area, and serious threat of high confined water on floor to coal seam is gradually increasing. Based deep project at working face II633 Hengyuan mine, this paper theoretically analyzes damage depth risk inrush from floor. The best proportion grouting materials was quantitatively optimized by indoor experiments, an industrial field test conducted judge effe...

In most cases, structural engineers assume a concrete floor to be a rigid diaphragm. Although this simplification is in most cases acceptable, it should be noted that such an assumption may be distrusted due to certain problems. Concrete structures with staggered shear walls are among those whose analysis should be conducted with special concern for the behavior of their floor diaphragms. Howev...

Abstract The skylight on the roof of an atrium can be popular for commercial malls to illuminate core area building. However, solar radiation and its heat get into building together with daylight, causing excessive cooling load. This paper studies daylighting energy performances coverage air-conditioned atriums in hot humid regions. performance different heights, glass types ratios are studied....

the underground temperature at a depth of about three to four meters is almost constant during the year. as a result in summer the underground is cooler than the ambient temperature. this potential is considered for greenhouse cooling by using an earth-to-air heat exchanger (eahe). in this research the effects of two parameters were investigated: a) the area of greenhouse in three levels of 9, ...

In most cases, structural engineers assume a concrete floor to be a rigid diaphragm. Although this simplification is in most cases acceptable, it should be noted that such an assumption may be distrusted due to certain problems. Concrete structures with staggered shear walls are among those whose analysis should be conducted with special concern for the behavior of their floor diaphragms. Howev...

Lokasi penelitian terletak di gedung Rusunawa (asrama mahasiswa) yang termasuk ke dalam wilayah administratif Universitas Jambi. Penelitian ini dilakukan untuk mengetahui nilai frekuensi alami tanah (f t ), bangunan b amplitudo (A 0 resonansi (%) dan indeks kerentanan (K) berdasarkan HVSR ( Horizontal to Vertikal Spectral Ratio ) FSR Floor ). Secara geologi, berada pada Formasi Muaraenim tersus...

Tectonic processes are major factors controlling landform development in tectonically active areas. In order to evaluate quantitative measurement of tectonic activities in the Alamarvdasht basin in the south of Iran, six different morphological indices including stream-gradient index (SL), drainage basin asymmetry (Af), hypsometric integral (Hi), valley floor width-valley height ratio (Vf), dra...