{"id":49612,"date":"2023-08-23T08:00:24","date_gmt":"2023-08-22T23:00:24","guid":{"rendered":"https:\/\/norimen.net\/wordpress\/?p=49612"},"modified":"2026-05-16T14:05:24","modified_gmt":"2026-05-16T05:05:24","slug":"risiko-injeksi-grout-1","status":"publish","type":"post","link":"https:\/\/norimen.net\/id\/grout-injection-risk-1\/","title":{"rendered":"Risiko dan Pemisahan dalam Pekerjaan Injeksi (Bagian 1)"},"content":{"rendered":"<p>Halo semuanya.<\/p>\n<p>Ini Enta.<\/p>\n<p>Pada pekerjaan penyisipan tulangan baja dan pemasangan jangkar tanah, dilakukan injeksi semen cair.<\/p>\n<p>Jika campuran semen tersebut terus mengalir, sampai sejauh mana Anda akan mengisinya?<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7835\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/08\/IMG_3173.jpg\" alt=\"Adonan semen sudah jadi\" width=\"600\" height=\"450\" \/><\/p>\n<p>Misalnya,<\/p>\n<p>Misalkan ada pekerjaan penyisipan tulangan baja sepanjang 5,0 m dengan diameter lubang bor 90 mm.<\/p>\n<p>Jumlah yang disuntikkan adalah<\/p>\n<p>0,045 m \u00d7 0,045 \u00d7 \u03c0 \u00d7 5 m = 0,0318 m\u00b3.<\/p>\n<p>Dengan asumsi tingkat kerugian desain sebesar 2,3 kali lipat, maka hasilnya adalah 0,0731598 m\u00b3<\/p>\n<p>Karena kandungan semen dalam susu semen per 1 m\u00b3 adalah 1.230 kg, maka<\/p>\n<p>0,0731598 \u00d7 1230 kg \u00f7 25 kg\/karung \u2252 4 karung. (100 kg)<\/p>\n<p>&nbsp;<\/p>\n<p>Angka-angka di atas hanyalah nilai desain.<\/p>\n<p>Kami akan menyajikan hasil pengukuran aktual.<\/p>\n<p><a title=\"Mengenai Diameter Nominal\" href=\"https:\/\/norimen.net\/id\/wordpress\/pemboran-dengan-diameter-nominal\/\" target=\"_blank\" rel=\"noopener\">Mengenai Diameter Nominal<\/a><\/p>\n<p>Diameter lubang bor lebih besar seperti yang tertera pada tautan di atas, sehingga jumlah aktualnya berbeda dari yang dirancang.<\/p>\n<p>&nbsp;<\/p>\n<p>Mari kita hitung dengan diameter lubang bor 105 mm berdasarkan pengukuran sebenarnya. (Ada perbedaan beberapa milimeter tergantung produsennya)<\/p>\n<p>0,0525 \u00d7 0,0525 \u00d7 \u03c0 \u00d7 5 m \u00d7 1230 \u00f7 25 \u00d7 2,3 kali \u2252 5 karung (125 kg)<\/p>\n<p>Hanya ini saja sudah beda sekitar 20%, ya w<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-41087\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2020\/01\/2019-12-19-09.00.34.jpg\" alt=\"Status Injeksi\" width=\"600\" height=\"450\" \/><\/p>\n<p>Baiklah, itu dulu,<\/p>\n<p>Berdasarkan pengukuran langsung, yang seharusnya muat 5 kantong, ternyata bisa muat 10 kantong.<\/p>\n<p>Dengan ini, jumlahnya dua kali lipat dari rancangan semula.<\/p>\n<p>Berapa kali lipat jumlahnya yang akan disuntikkan?<\/p>\n<p>&nbsp;<\/p>\n<p>Dalam pedoman perancangan dan pelaksanaan konstruksi jangkar tanah disebutkan bahwa bagian yang menempel harus disuntikkan secara berurutan.<\/p>\n<p>Dulu, saat melakukan pekerjaan pencegahan longsor di Jalan Nasional 42, saya pernah menuangkan 5 m\u00b3 semen cair ke gunung yang sama sekali tidak bisa didaki!<\/p>\n<p>Pihak yang ditugaskan oleh Kementerian Perhubungan dan Infrastruktur mengatakan bahwa memang tertulis seperti itu, sehingga mereka tidak mau mendengarkan pendapat kami.<\/p>\n<p>&nbsp;<\/p>\n<p>Padahal, saya sendiri yang mengusulkan agar kita menggunakan packer.<\/p>\n<p>Bagaimana cara mengatasinya jika sudah memasukkan 5 m\u00b3 ke dalam satu tabung, tetapi isinya tetap tidak naik?<\/p>\n<p>Karena Anda mengatakan bahwa volume yang disuntikkan bisa diubah, untuk sementara saya memasukkan 5 m\u00b3.<\/p>\n<p>Tolong beri instruksi selanjutnya, hehe<\/p>\n<p>&nbsp;<\/p>\n<p>Dalam kasus seperti ini, jika kita mencoba mencari tahu di mana letak masalahnya, jawabannya adalah pada desainnya.<\/p>\n<p>Dalam desain, kami menilai bahwa terdapat lapisan pengikat di sana.<\/p>\n<p>Namun, pada kenyataannya, karena tidak ada bagian yang dapat menempel di sana, maka tidak dapat menempel.<\/p>\n<p>Artinya, hal itu tidak dapat diprediksi sepenuhnya pada tahap perancangan.<\/p>\n<p>Meski begitu, mustahil bisa membaca semuanya dengan tuntas, jadi cukup lakukan saja perubahan desain di lokasi.<\/p>\n<p>&nbsp;<\/p>\n<p>Itu karena mereka tidak mau mendengarkan saran dari teknisi yang berpengalaman dan malah mengikuti petunjuk di buku saja.<\/p>\n<p>Buku ini hanyalah panduan dasar dan tidak memuat hal-hal yang tidak lazim.<\/p>\n<p>Hal-hal yang tidak biasa hanya bisa dipelajari dari pengalaman di lapangan.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6451\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/04\/b1ee0a9d71c8ee899f2456d03dd67018.jpg\" alt=\"Selang injeksi grout\" width=\"600\" height=\"460\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/04\/b1ee0a9d71c8ee899f2456d03dd67018.jpg 600w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2018\/04\/b1ee0a9d71c8ee899f2456d03dd67018-300x230.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Mengenai pekerjaan pemasangan jangkar tanah, hal tersebut memang disebutkan, namun tidak ada penjelasan khusus mengenai pekerjaan pemasangan tulangan baja.<\/p>\n<p>Hal ini karena metode ground anchor menempati peringkat teratas.<\/p>\n<p>Namun, ada begitu banyak hal yang bahkan tidak disebutkan dalam metode ground anchor, jadi apa yang harus dilakukan jika hal itu terjadi?<\/p>\n<p>Sambil memikirkan hal itu,<\/p>\n<p>Kalau begitu, sampai mana akan disuntikkan?<\/p>\n<p>Jadi, saat hal itu terjadi, yang perlu dipertimbangkan tentu saja adalah pengemas.<\/p>\n<p>&nbsp;<\/p>\n<p>Menyuntikkan semen susu sebanyak-banyaknya ke dalam gunung yang masih bisa menampungnya sebanyak apa pun itu tidak masuk akal!<\/p>\n<p>Risiko yang mungkin timbul pada saat itu adalah sebagai berikut.<\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 150%;\"><strong><span style=\"color: #0000ff;\">1. Aliran ke sungai dan sebagainya<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-size: 150%;\"><strong><span style=\"color: #0000ff;\">2. Aliran ke sawah dan ladang<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-size: 150%;\"><strong><span style=\"color: #0000ff;\">3. Aliran ke saluran tertutup dan sejenisnya<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-size: 150%;\"><strong><span style=\"color: #0000ff;\">4. Penyumbatan akibat pengisian celah di bagian belakang dinding penahan dengan kerikil dan sejenisnya<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-size: 150%;\"><strong><span style=\"color: #0000ff;\">5. Penyumbatan pada Mizumichi (aliran pipa)<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-size: 150%;\"><strong><span style=\"color: #0000ff;\">6. Penambahan berat pada lapisan tipis (tidak merata)<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-size: 150%; color: #0000ff;\"><strong> 7. Susu semen tidak meresap ke dalam tanah asli meskipun telah disuntikkan<\/strong><\/span><\/p>\n<p><strong><span style=\"font-size: 150%; color: #0000ff;\">8. Karena penyaluran dilakukan secara aliran alami, jika ada lubang, cairan akan masuk sebanyak apa pun<\/span><\/strong><\/p>\n<p>Jika ingin melakukan pengerjaan yang pasti sambil menghindari risiko, maka Packer adalah satu-satunya pilihan. (Untuk saat ini)<\/p>\n<p>&nbsp;<\/p>\n<p>Jadi, besok akan dilakukan penandaan batas-batas area pengemasan.<\/p>\n<p>&nbsp;<\/p>\n<p>Sampai jumpa lagi.<\/p>","protected":false},"excerpt":{"rendered":"<p>Halo semuanya. Ini Enta. Dalam pekerjaan pemasangan tulangan baja dan pemasangan jangkar tanah, kita menyuntikkan semen cair. Jika semen cair tersebut terus mengalir tanpa henti, sampai sejauh mana kita harus menyuntikkannya? Misalnya, misalkan ada pekerjaan pemasangan tulangan baja dengan diameter lubang bor 90 mm dan kedalaman 5,0 m. Jumlah yang disuntikkan adalah \u2026<\/p>","protected":false},"author":2,"featured_media":5572,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_total_topic_count_hidden":0,"_bbp_total_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[28,30],"tags":[44,47,48,49,1000],"class_list":["post-49612","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ground-anchor","category-lock-bolt","tag-44","tag-47","tag-48","tag-49","tag-1000"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.5 (Yoast SEO v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ 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