Building technology co. , LTD. Remy reinforcing a number in the state-owned coal mine collapse at the application processing

Remy reinforcement remy reinforcement number one number one price remy no. 1 factory remy 1 reinforcement is obtained in XuanDong processing of coal mine collapse risk area in hebei XXXX group mining co. , LTD. Offers wang hb, abstract: remy reinforcement material piece of help in the treatment of the coal mine coal wall, roof fall risk, to deal with the issue of transcripts of 4 quick purpose, can quickly restore production, the economic benefits of enterprises is conducive to progress. A key words: remy data help take I collapse, reinforcement is obtained, A collapse risk area selected 33207 operation plan. J - Edge is the second mining area in the shipping lane, underneath is mining area boundary. 0 - 5 meters, I113 south vitrain coal, bright coal and dull coal composition, for half the light type, the plan is not successful. For the block and powder. Part there is a small fold, coal seam wave, and the other end with a single pillar above the beams, the big wood made surface rendering sundries row yan fold after operation of false roof roof thickening, directly on the top of the argillaceous sandstone, coal wall with anchor and, when the coal winning machine cutting to the coal wall, bolt expires, the coal wall thickened and interbed, thin interbedding of sandstone and shale layer thickening, and change in the roof with attacks from the help of roof fall risk again, the plan is still not successful. Flat stomach trouble. 33206 operation selection inclined longwall mining method, mining overall height at a time. Under the pressure of soft coal wall at the top of roof, attack help, constitute an empty area is too top 33206 operation arrangement as shown in the drawing 1, broken roof caving to attack. Surface collapse risk profile of roof fall risk. To select the plan by 3: choosing remy plus with 1 first and when the operation up to 1290 meters with coal. Wall, roof with beams, big wood management collapse risk area. False roof thickening, the upper coal seam coal become soft. Support - After before reaction of polyurethane materials and the bonding strength of coal and rock looks no less than management attack under the condition of the roof caving. Two kinds of liquid with the moment according to add department 【 South manufacturers into line adjustment, general control at about 1 oos. Coal products and form a whole body, the strength and toughness of progress, coal can effectively support the roof, not attack for disturbance. Third, reinforcing plan for 45 - 70 bracket of roof fall, roof pressure to pass both sides, so the 30 to 45, 80 - Choose from 30 and 80 stents note remy to central China, and with no. 1. Good coal wall in weeks, not after helping the coal wall gradually in central south on both sides to wait with aniseed, i-steel management fall risk the risk of lost. 2 meters under the roof coal hard drive away L, 20 degrees oblique, deep hole 8 meters, 5 meters away L spacing, hole location to the roof, the upper is easy to slice for soft coal all week. grouting hole layout - as shown in figure 2 Four, grouting process and points for attention on remy added with l process: a punch a hole grouting pipe installation to connect on a grouting slurry pump is a wash off pump apart grouting pipe. Information oO first _ chuan won j 'remedy? Before to support strong labor lost 3 grouting to choose reasonable grouting pump of a degree. When present leak slurry, small can _ stop grouting yards, and straight through the air supplying safe and can meet the requirements of a bearing can be multiple hole injection quantity of grouting pump depth of grouting speed and 3 cotton silk seal larger cracks, sichuan and slurry seal pump, reduce the washing pump frequency. Check pressure grouting, wind pressure plugging external fracture after grouting + ears,