scholarly journals Experience of hydraulic borehole mining of buried gold placers in permafrost

2019 ◽  
pp. 41-46
Author(s):  
V. Zh. Arens ◽  
◽  
A. S. Khrulev ◽  
G. Kh. Khcheyan ◽  
M. I. Fazlullin ◽  
...  
Keyword(s):  
Borehole Mining

scholarly journals Increasing of filtration characteristics of ore bodies in borehole uranium mining

2020 ◽  
Vol 168 ◽  
pp. 00014
Author(s):  
Bayan Rakishev ◽  
Zhiger Kenzhetayev ◽  
Asel Shampikova ◽  
Bakytzhan Toktaruly
Keyword(s):  
Experimental Work ◽  
Uranium Mining ◽  
Optimal Parameters ◽  
Chemical Reagents ◽  
Chemical Type ◽  
Ore Bodies ◽  
Geological Conditions ◽  
Before And After ◽  
Degree Of Extraction ◽  
Borehole Mining

There is a description of technology by borehole uranium mining in Kazakhstan. The factors which affect for reduction of filtration characteristics in productive reservoirs are studied in detail and described an effective method for increasing borehole uranium production. The processes that occur during borehole mining of uranium with the use of sulfuric acid as solvent, as well as the conditions and reasons for reducing the productivity of geotechnical wells during their operation are considered. The results of experimental work on the intensification of borehole uranium mining in complex mining and geological conditions are analyzed and discussed, comparative graphs of the content of uranium in the productive solution, the flow rate of wells, the degree of extraction and the volume of production before and after the experiments are constructed. The results of experimental work on the efficiency of borehole uranium production, the content of uranium in PS and the productivity of wells, with predominance of the chemical type of sedimentation, are positively evaluated. The optimal parameters for the intensification of borehole uranium production in complex mining and geological conditions are recommended, and method for using complex of multi-purpose chemical reagents in combination with traditional methods of well regeneration is developed.

scholarly journals PENGELOLAAN LINGKUNGAN PADA KEGIATAN OPERASI TAMBANG DARAT BIJIH TIMAH MENGGUNAKAN METODE BOREHOLE MINING DI WIUP PT. TIMAH, TBK

2020 ◽  
Vol 1 (1) ◽  
pp. 603614
Author(s):  
Nomensen Ricardo ◽  
Dewi Ayu Kusumaningsih ◽  
Teguh Nurhidayat
Keyword(s):  
Environmental Management ◽  
Carrying Capacity ◽  
Mine Drainage ◽  
Drainage System ◽  
Environmental Problems ◽  
Water Jet ◽  
Mining Activities ◽  
Mining Method ◽  
Borehole Mining ◽  
Back Filling

ABSTRAK Borehole mining (BHM) merupakan metode penambangan menggunakan aliran air bertekanan tinggi (water jet) dan dikombinasikan dengan sistem pemompaan slurry dari bawah tanah. Dalam upaya meningkatkan produksi bijih timah, PT. TIMAH, Tbk melakukan kegiatan penambangan menggunakan metode BHM. Pemilihan metode penambangan BHM bertujuan untuk menambang sumberdaya marginal tanpa memerlukan stripping overburden (OB), dengan prinsip kerja: membuat lubang vertikal hingga dasar zona target menggunakan alat holemaker; dengan memanfaatkan tekanan water jet, air akan memberai material di sekelilingnya; saat material terberai, pompa tanah siap menghisap slurry hingga ke permukaan. Kapasitas penambangan efektif menggunakan metode BHM adalah 750 m3/bulan, dengan jam jalan efektif alat 125 jam/bulan. Kegiatan penambangan dengan metode BHM ini, berpotensi menimbulkan masalah lingkungan diantaranya terbentuknya lubang bekas penambangan (void) dan genangan air di sekitar lokasi tambang. Pemindahan tanah dari bawah permukaan pada kegiatan ore getting dengan volume 750 m3 dapat mengganggu struktur dan kekuatan tanah sehingga menyebabkan runtuhan/amblesan yang pada akhirnya menghasilkan void. Pengelolaan lingkungan yang tidak baik dapat menimbulkan masalah yang serius terhadap bentang lahan dan akan menimbulkan dampak turunan seperti masalah sosial. Perencanaan desain penutupan lahan dengan metode backfilling menjadi terobosan untuk mengatasi void yang ada. Prinsipnya, material yang akan diambil pada titik penambangan berikutnya ditransfer ke void sebelumnya yang telah terbentuk dan demikian seterusnya. Di samping itu, dilakukan revegetasi di sekitar lokasi penambangan BHM untuk meningkatkan daya dukung tanah. Limpasan air ke permukaan secara kontinu menyebabkan kondisi lahan sekitar menjadi lembab (jenuh air) sehingga daya dukung tanah menurun. Kegiatan penambangan menggunakan metode BHM di PT. TIMAH, Tbk memang merupakan suatu terobosan dalam konservasi cadangan bijih timah. Namun, aspek lingkungan juga menjadi hal yang perlu diperhatikan. Pengelolaan lingkungan yang tepat dapat meminimalkan masalah lingkungan yang terjadi. Lubang-lubang berdiameter 1,5 hingga 3 meter yang dihasilkan dapat diatasi dengan sistem back-filling. Limpasan air di permukaan diatasi dengan perencanaan sistem penirisan tambang yang terencana yaitu dengan pembuatan jalur/paritan di sekitar area penambangan. Kata kunci: borehole mining, void, backfilling  ABSTRACT Borehole mining (BHM) is a mining method using high pressure water flow (water jet) and combined with an underground slurry pumping system. In an effort to increase tin ore production, PT. TIMAH, Tbk conducts mining activities using the BHM method. The selection of the BHM mining method aims to mine marginal resources without the need for stripping overburden (OB), with the working principle: making vertical holes to the bottom of the target zone using a holemaker; by utilizing the pressure of a water jet, water will fill the surrounding material; when the material is dispersed, the ground pump is ready to suction the slurry to the surface. The effective mining capacity using the BHM method is 750 m3 / month, with effective road hours of 125 hours / month. Mining activities using the BHM method have the potential to cause environmental problems including the forming of void pits and puddles around the mine site. Displacement of soil from below the surface in ore getting activities with a volume of 750 m3 can disrupt the structure and strength of the soil, causing collapse / subsidence which eventually produces voids. Improper environmental management can cause serious problems for the landscape and will cause derivative impacts such as social problems. Land cover design planning with backfilling method is a breakthrough to overcome existing voids. In principle, the material to be taken at the next mining point is transferred to the previously formed voids and so on. In addition, revegetation was carried out around the BHM mining location to increase the carrying capacity of the soil. The runoff of water to the surface continuously causes the surrounding land to become moist (saturated with water) so that the carrying capacity of the soil decreases. Mining activities use the BHM method at PT. TIMAH, Tbk is indeed a breakthrough in the conservation of tin ore reserves. However, environmental aspects also need to be considered. Proper environmental management can minimize environmental problems that occur. The holes with a diameter of 1.5 to 3 meters produced can be overcome with a back-filling system. Surface runoff is overcome by planning a planned mine drainage system by making a path / trench around the mining area Key Words: borehole mining, void, backfilling  

scholarly journals Hydraulic borehole mining method possible application at Middle Larba alluvial gold field

2018 ◽  
Vol 56 ◽  
pp. 01025
Author(s):  
Vikror Rochev
Keyword(s):  
Underground Mining ◽  
Negative Impact ◽  
Far East ◽  
Operating Costs ◽  
Mining Method ◽  
Nature Protection ◽  
Alluvial Deposits ◽  
Alluvial Gold ◽  
Geological Conditions ◽  
Borehole Mining

Gold on placer deposits is mainly extracted in two ways: open and underground. But the open method of mining has a great negative impact on the environment, and the mine method is characterized by high labor intensity, capital and operating costs. As an alternative to these methods of development of alluvial gold, the hydraulic borehole mining method can be used. The use of a well as a hydro-mining creates favorable opportunities for ensuring nature protection and safe operation. When applying the method, the well does not have hydraulic extractions: stripping, this allows preserving the cultural layer of the soil in its integrity; explosive, loading works and use of motor transport, excluding dustiness and gas pollution of the atmosphere; the hard and harmful work for people's health is eliminated. The method of well drilling requires further serious scientific, technical and developmental studies to increase its reliability and expand the field of application. Alluvial deposits of gold are the most favorable objects for hydraulic borehole mining under their mining and geological conditions. Recently, new gold placers have been identified and are being surveyed at a depth of more than 40 m. With a high content of metal in them, these placers are very promising for mining by the hydraulic borehole mining method. The reserves of gold in these fields reach several tens of tons. Against the backdrop of a reduction in inventories for open and underwater mining, large technical difficulties, significant capital investments and operating costs for underground mining of thawed buried placers, the advantages for gold mining by the hydraulic borehole mining method are increasing. Based on mentioned above, the study of the application of the hydraulic borehole mining method in the conditions of Siberia and the Far East is a timely scientific task.

scholarly journals Expanding of spheres the application of borehole hydro-production technology to develop deposits of non-traditional hydrocarbons

2018 ◽  
Vol 60 ◽  
pp. 00018 ◽  
Author(s):  
Mykhailo Pedchenko ◽  
Larysa Pedchenko
Keyword(s):  
Phase Transition ◽  
Energy Consumption ◽  
Production Technology ◽  
Gas Hydrates ◽  
Oil And Gas ◽  
High Rate ◽  
Natural Bitumen ◽  
Technology Adaptation ◽  
Borehole Mining ◽  
Bitumen Extraction

The reserves of oceanic hydrates of methane and natural bitumen in times exceed the stocks of traditional oil and gas. The purpose is the analysis of the adaptation possibility of borehole mining technology for the development of bituminous sands deposits and marine gas hydrates was the purpose of the study. The variants of the HBM technology adaptation for the development of bituminous sands and gas hydrates deposits are proposed. The method of extracting gas hydrates based on HBM technology involves them removal without the energy consumption for phase transition. The main advantages of the development of bituminous sands deposits on the basis of HBM technology are: the possibility them extraction in the range of depths 75 – 200 m, the potential high rate of bitumen extraction, the separation of bitumen from the rock in production, the minimum impact on the environment, the possibility of conducting extraction of natural bitumen in areas covered with water.

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