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Wanjiazhai Water dam dam axis selection

Focus on their own line when compared to the terrain, geological conditions and hydraulic layout. The dam axis at the natural river A narrow (410m), the length of the shortest Xinjiang dam, {huge quantities of concrete most provinces. However, to ensure there is sufficient forefront of pedicle width, required to shore excavation business. I left bank of the excavation would increase the top sides higher terrain. Traffic problems on the mound in the river bend I at the ridge axis, possession of the building to vent flow will not sting, the first negative edge. In t, t dam axis in the Ge. In the topographic conditions, geological conditions and the hydraulic layout of all have some differences. I. I. A topographic conditions - dam axis orientation NS89. , Tight bend of the river downstream of the palm. Right bank of the upper ridge was narrow shoulders and the terrain, the downstream wide inverted bell shape. The right bank about 100m downstream at a string of Erdaogou, was half hanging state, a certain flow area, the rainy season,[link widoczny dla zalogowanych], all under the debris, red Wei ridge site. T ridge axis in the direction NS86,[link widoczny dla zalogowanych], on the right bank abutment was cork-shaped terrain Cameroon, right bank of the dam line application Erdaogou located upstream] 20m Department. A width of the river over a ridge line in the narrow 2Om so, both sides blame the top of the ridge line than the low-25m. The left bank of the third platform to facilitate the overall layout. T ridge axis than in the dam axis in a topographic conditions have improved. 3.3.2 Geological conditions, the engineering geological conditions of dam axis t see Soft table. No more so between the two, similar to the engineering geological problems. The dam axis on the right bank there is a large crack dizzy. T dam axis in both banks have a small new layer. , The dam axis the Mud of 7 layers. Than in multi-layer ridge axis. The degree of cross-strait t weathered rock dam line is more serious. In one and in - ridge axis, the thickness of the confined aquifer were 35.7O ~ 37.71m and 36.63 ~ 87.99m, roof depth (ie thickness of overlying rock) was 26.97 ~ {{ . 51m and 25.4l ~ 54.71m, natural head were 28.79 ~ 49.19m and 16.07 ~ 35.97m, Shen I dam axis is more advantageous. Bed area can be relatively weak group of the fourth floor, Zhang Xia (∈ jZ '). Buried in the exploration of a ridge axis is 15.47 ~ 27.60m. Buried in the exploration for the dam axis t 14.71 ~ 20.40m. T dam axis in the axis than in the dam rose l ~ 6m, but pay attention to the ridge of the base layer is no qualitative change in the sliding stability. Overall. In Cameroon than in the dam axis ridge axis. 3. . I hydraulic arrangement, the dam axis is close to the river bend. Wei hub leakage flow on the negative l bell down the right bank of the terrain. Negative slope stability of dam block, the same time. Dam blocks upstream and downstream dam slope height of 2O meters. Showed a tendency to form the downstream slope. T large excavation treatment. Construction more difficult and the right bank downstream of the dam I need to consider a string of Erdaogou flood measures. Shore protection project I built the top of the left bank of high traffic on the dam is more difficult. Ridge axis in the t, the bank straight comparison. I favor the right bank of dam discharge flow convergence stopper block-shaped ridge of topography on the stability of the slope is more favorable than I in the ridge line to shorten the length of Xinjiang 27m. Save on Concrete ridge about l0 million m,. Earth Excavation 300,000 m (including reducing the amount of road excavation) f the top of the left bank of the lower shore. Dam access road layout is conducive to t f,[link widoczny dla zalogowanych], the right bank of dam line also avoid collusion and the left bank of the many small gullies gully. Mizoguchi protective measures can be avoided. Saving investment. The foregoing analysis, the final selection for the design of the dam axis t ridge line. On, the ridge axis by Pat Wanjiazhai Dam in l993 in the preliminary design through a review in May. (Editor Kong Dean) (continued from page ostrich) material, the uniaxial stress and load test prove that the same deformation characteristics of concrete. Masonry structure on the plastic component analysis, the incremental form can be used, each incremental step that the linear law is obeyed,[link widoczny dla zalogowanych], the establishment of constitutive relation. Masonry under uniaxial stress state, such as the constitutive equation (6), (7),[link widoczny dla zalogowanych], under the plane stress constitutive relation, such as type (1O). One of the parameters should be determined by experiment. Strength, elastic modulus, stress (or strain) concentration factor and Poisson's ratio and other mechanical properties of masonry constitutive model is an important parameter. According to statistical data analysis of the proposed test a variety of strength standard value, represents the limit of masonry structural elements of the proposed level of quality} elastic modulus type, stress (strain) concentration factor and Poisson ratio, representing the masonry structural member in the average level of quality. These indicators address the masonry constitutive model parameters in the problem.