When the highway traffic accident happened, the capacity will decrease, and if the upstream traffic volume was more than the remaining capacity, the traffic jam will happen. The simulation software VISSIM was used to simulate and analyze the highway traffic accident under different number of blocked lane, upstream traffic volume and traffic accident duration. Simulation result shows that, the capacity has something to do with the number of blocked lane, but has nothing to do with the location of traffic accident. The time of biggest delay has something to do with the number of blocked lane and traffic accident duration, but has nothing to do with the upstream traffic volume. The capacity has nothing to do with traffic accident duration. The longer traffic accident duration, the more delay. And the queue length increases when the number of blocked lane, upstream traffic volume and traffic accident duration increase.
Hutubihe formation in Well block Lu-9 of Luliang oilfield, Junggar basin of Xinjiang, China is characterized by special thin-bedded, low-amplitude reservoirs with edge and bottom water. Non-producing reserves are mostly distributed in small thin-bedded lenticular sand bodies with edge and bottom water. The average reservoir thickness is less than 3m. Therefore, the water-oil contact relationship is relatively complicated and it is difficult to produce oil from vertical wells. As a result, the economic benefit is poor. Based on the detailed reservoir description and dissection of single oil-bearing sandbodies, classification of flow units, accurate identification of net pay and low-resistivity oil-water zones, pilot horizontal-well production is carried out. Meanwhile, research on accurate well track control, reasonable horizontal section length, well placement pattern and injection-production well spaces are performed. Thus, a set of horizontal well production technologies are established for this kind of reservoirs. On the basis of optimization of non-producing reserves of different oil-water relationships and different geological characteristics in the range of an 800m interval, 110 horizontal wells are allocated with the newly-established productivity of 400 thousand tons. The producing extent of reserves has been improved from 50.7% to 83.2% and pretty good effects have been gained.
In order to adapt to the development trend in current vocational education, we developed a multi-functional hydraulic test bench for mechatronics teaching practice. The component structure and functional features of the test bench was introduced in this paper and the application to vocational education was proved to be effective. Practice shows that the bench not only provides students with good experimental conditions close to the actual production and inspires learning enthusiasm and innovation consciousness of the students, but also provides teachers with a platform for scientific research, improves the utilization value of equipment.
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