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Thong tin khoa hoc cong nghe mo !Ngliien cm quy Cudt dich chuyen Semdt ddt DO ANH Hl/dNC CUA KHAI THAC HAM LO tai cae mo vung Quang Hinh So far, there have been many research works on the effects from[.]
Thong tin khoa hoc cong nghe m o !Ngliien cm quy Cudt dich chuyen Semdt ddt DO ANH Hl/dNC CUA KHAI THAC HAM LO tai cae mo vung Quang Hinh So far, there have been many research works on the effects from geological conditions, mining depth and technologieson the process of rock deformati on and displacement but not yet any detail research results on the correlation between the rock deformation and displacement and the above mentioned conditions From the monitored results of geological structures and factors at Quang Ninh coal basin, the anthor has referred to some forms of rock displacement as weel as the effects of mining technologies and activities on the rock displacement Md dau Trong nhufng nam gan day, than la nganh cdng nghiep phat trien manh me, tang trudng nhanh, de dam bao yeu cau thj trudng tieu thu than hien nay, hang nam phai md rdng md, khai thac cang xudng sau lam khdi da mat tfnh lien tuc, m6i trudng da trd len da dang va phCfc tap, tCf m6i trudng ben vCfng sang m6i trUdng kem ben vCfng dan den bien dang djch chuyen be mat Cau true dja chat, c6ng nghe khai thac, cac yeu td khac nhu nUdc ngam cung anh hudng khdng nhd den be mat Xac djnh cac thdng sd dich chuyen bien dang da md va be mat dat la cd sd de lUa chpn cac bien phap bao ve ddi tUpng va tien hanh khai thac hpp ly d vung cd anh hudng tdi cac ddi tupng can bao ve Van de bao ve cac dd'i tupng tU nhien, nlian tao tren be mat dat anh hudng cua khai thac md cang dupc quan tam, va cd y nghTa quan trpng cdng tac khai thac md KS PHAM VAN CHUNG Vien Khoa hoc Cong nghe Mo - TKV djch chuyen bien dang dat da cua be than Quang Ninh Su phong phu va da dang the nam cua via than thupc be than Quang Ninh cho phep nghien CLfu bien dang cua dat da (khi gdc ddc cua via tCf 0° den 90°, chieu dai khau cua via, chieu sau khai thac, dp cung dat da) the nam cua via khac Tuy nhien, den van chUa c6 ly thuyet chung ve bien dang dat da d dang via Cac tram quan trac dat tai cac md Mao Khe, Nam Mau, Ha Lam, Mdng DUdng la CO sd de nghien cLfu ve kha nang anh hudng cua yeu td dja chat, qua trinh khai thac den djch chuyen va bien dang dat da Trong khdi dat da nam tren khoang trdng khai thac se tao vung sup do, vi sU lien ket giua cac phan A Rk\ ' -^-, Y Tren vung sup do, dat da dich chuyen dUdi dang tach Idp va hinh he thdng cac Idp mdng Dang dich chuyen cd ban cua cac Idp mdng la udn cong the nam cua cac Idp dat da ddc thoai hoac udn cong va trupt dat da cd the nam ddc va ddc dCfng Trong qua trinh khai thac, dp lun CLia dat da khdng deu tao bac thuan va bac ^ jj \"BX ^^@IZ^ ^ cau true bj pha hOy Chieu cao vung sup dd trudc het phu thudc vao chieu day khau cua via than, vao kha nang Id rdi va mufc dp dam nen dat da Tdc dp djch chuyen cua dat da phu thudc phUdng phap pha hda dieu khien da vach toan phan hay tCfng phan / _^!i^— ^ —y • \RI> ^ ^ Anh hUdng yeu to dja chat, qua trinh khai thac den Hinh 1: Sa phan bo khoi dat d^ bao quanh Id chg KHCNM SO 12/2008* DIA CO MO Thong tin khoa hoc cong nghe mo " ^ ^ tu cua giao su X.D Kazacovsky, xac djnh cac gdc djch chuyen de xay dung tram quan trac, dac xac djnh lai cac gdc dich chuyen cho vung Quang Ninh xay dung quy pham ap dung cho Viet Nam Hinh 2: Sa danh gia dich chuyen dat da theo mat phan Idp ngupc thi vec to djch chuyen cac mdc tren tuyen se bj djch chuyen khdi phUdng phap tuyen via Dieu lam giam bdt Lfng iUc dat da theo hudng vu6ng goc vdi mat phang via, ddng thdi cung lam tang kha nang djch chuyen dat da theo mat phan Idp Sd 66 danh gia dich chuyen dat da theo mat phan Idp dUdc the hien tren hinh Su udn cong cac Idp mat phang gay nen djch chuyen trUpt tUdng ddi giUa cac Idp dan den djch chuyen cat tang cudng mat phang ngang Chuyen djch cat tang cudng dupc ghi nhan theo ket qua quan trac tai tram 1(12) md than Mdng Duong Bien dang dCfng va ngang tap trung se rat nguy hiem cho cac ddi tupng tren be mat bi khai thac va can cd bien phap bao ve chUng Khi dp sau khai thac tang, tdng cac luc d vung ap luc tua se tien dan den gia trj cd djnh vi tai vj trf hinh bdn djch chuyen Khi dd cac vec td (tdc dp) djch chuyen tCf hai phfa ban bdn cd xu hudng chuyen djch tang cudng theo mat tiep xuc cua dat da cd be mat yeu Tdc dp lun dUdc xac djnh theo cdng thLfc: v = T- H Trong dd: r|m la