✅ترانشه‌ها به عنوان حفریات موقت یا دائمی در زمین برای اجرای عملیات مختلف مانند لوله‌گذاری، کابل‌کشی، ساخت پی و غیره ایجاد می‌شوند. این سیستم، عملکردی مشابه غلاف در حفاری شمع دارد. ❇️عوامل موثر در پایداری ترانشه‌ها ✔️نوع خاک ✔️عمق و شیب ترانشه ✔️وجود آب زیرزمینی ❇️روش‌های پایداری ترانشه‌ها ✔️حائل‌های موقت ✔️دیوارهای حائل دائمی ✔️مهارگذاری ✔️تزریق مواد تثبیت‌کننده ✔️کاهش سطح آب زیرزمینی ✔️کنترل شیب
✅ترانشه‌ها به عنوان حفریات موقت یا دائمی در زمین برای اجرای عملیات مختلف مانند لوله‌گذاری، کابل‌کشی، ساخت پی و غیره ایجاد می‌شوند. این سیستم، عملکردی مشابه غلاف در حفاری شمع دارد. ❇️عوامل موثر در پایداری ترانشه‌ها ✔️نوع خاک ✔️عمق و شیب ترانشه ✔️وجود آب زیرزمینی ❇️روش‌های پایداری ترانشه‌ها ✔️حائل‌های موقت ✔️دیوارهای حائل دائمی ✔️مهارگذاری ✔️تزریق مواد تثبیت‌کننده ✔️کاهش سطح آب زیرزمینی ✔️کنترل شیب
Telegram boasts 500 million users, who share information individually and in groups in relative security. But Telegram's use as a one-way broadcast channel — which followers can join but not reply to — means content from inauthentic accounts can easily reach large, captive and eager audiences. The S&P 500 fell 1.3% to 4,204.36, and the Dow Jones Industrial Average was down 0.7% to 32,943.33. The Dow posted a fifth straight weekly loss — its longest losing streak since 2019. The Nasdaq Composite tumbled 2.2% to 12,843.81. Though all three indexes opened in the green, stocks took a turn after a new report showed U.S. consumer sentiment deteriorated more than expected in early March as consumers' inflation expectations soared to the highest since 1981. Apparently upbeat developments in Russia's discussions with Ukraine helped at least temporarily send investors back into risk assets. Russian President Vladimir Putin said during a meeting with his Belarusian counterpart Alexander Lukashenko that there were "certain positive developments" occurring in the talks with Ukraine, according to a transcript of their meeting. Putin added that discussions were happening "almost on a daily basis." This ability to mix the public and the private, as well as the ability to use bots to engage with users has proved to be problematic. In early 2021, a database selling phone numbers pulled from Facebook was selling numbers for $20 per lookup. Similarly, security researchers found a network of deepfake bots on the platform that were generating images of people submitted by users to create non-consensual imagery, some of which involved children. Russians and Ukrainians are both prolific users of Telegram. They rely on the app for channels that act as newsfeeds, group chats (both public and private), and one-to-one communication. Since the Russian invasion of Ukraine, Telegram has remained an important lifeline for both Russians and Ukrainians, as a way of staying aware of the latest news and keeping in touch with loved ones.
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