{'fraction_non_alphanumeric': 0.021814006888633754, 'fraction_numerical': 0.01951779563719862, 'mean_word_length': 4.7368421052631575, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Desilting basin system of the Dul Hasti hydroelectric project

The Dul Hasti Hydroelectric Project located in the lower ranges of the Himalayas on a river carrying heavy sediment loads, especially during the high-flow season (monsoon period), includes a small storage capacity (live and dead storages). Because of these particular features it is an utmost necessity to trap a high percentage of the coarser particles generally made of quartz. To achieve this objective and trap more than 90% of the particles coarser than 0.3 mm, underground desilting basins have been designed on the basis of a theoretical approach further checked and developed using hydraulic model tests. The latter showed that with a design discharge of 123 m 3 /s a 240-m-long basin equipped with a 48-m diffusor and having a cross-sectional area of 170 m 2 can satisfactorily meet the requirement.