哈哈你也是新学的吧,这里是我的代码,探讨一下。 dy=1 ny=101 ymin=-50 dx=1 nx=101 xmin=-50 x=xmin:dx:(xmin+(nx-1)*dx) y=ymin:dy:(ymin+(ny-1)*dy) [X,Y]=meshgrid(x,y) p1=10 u=0.02 r=5 h=9 %中间梯度装置 ps=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*x.^2)./(h^2+x.^2).^5/2] plot(x,ps),title('中间梯度主刨面异常') grid on; hold on j=0 figure for y=-5:1:5 j=j+1 ps=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*x.^2+y^2)./(h^2+x.^2+y^2).^5/2] q(j)=plot(x,ps) hold on end grid on; title('中间梯度随刨面位置变化') figure ps=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*X.^2+Y.^2)./(h^2+X.^2+Y.^2).^5/2] pcolor(X,Y,ps);shading interp title('中间梯度等值线图') % 联合刨面 MN=4 AM=10 AN=14 BN=10 BM=14 dx=1 nx=101 x=xmin:dx:(xmin+(nx-1)*dx) KK=AM*AN/MN da=((x-2-AM).^2+h^2).^(1/2) db=((x+2+BN).^2+h^2).^(1/2) rm=((x-2).^2+h^2).^(1/2) rn=((x+2).^2+h^2).^(1/2) cosa=(da.^2+rm.^2-AM^2)./(da.*rm.*2) cosb=(da.^2+rn.^2-AN^2)./(da.*rn.*2) psA=p1*[1+2*KK*(u-1)/(2*u+1)*r^3*(cosa./(da.^2+rm.^2)-cosb./(da.^2+rn.^2))] cosc=(db.^2+rm.^2-BM^2)./(db.*rm.*2) cosd=(db.^2+rn.^2-BN^2)./(db.*rn.*2) psB=p1*[1+2*KK*(u-1)/(2*u+1)*r^3*(-cosc./(db.^2+rm.^2)+cosd./(db.^2+rn.^2))] figure xx=plot(x,psA) hold on yy=plot(x,psB) legend("psA","psB") title("联合刨面低阻球体上方视电阻率区线") %对称四极 figure for x=0:1:100 AB=20:10:1000 MN=4 AM=(AB-MN)/2 BN=(AB-MN)/2 AN=AM+MN BM=BN+MN K=AM.*AN/MN da=((x-2-AM).^2+h^2).^(1/2) db=((x+2+BN).^2+h^2).^(1/2) rm=((x-2).^2+h^2)^(1/2) rn=((x+2).^2+h^2)^(1/2) cosa=(da.^2+rm^2-AM.^2)./(2*da.*rm) cosb=(da.^2+rn^2-AN.^2)./(2*da.*rn) psA1=p1*[1+2*(u-1)./(2*u+1)*r.^3*(K.*cosa./(da.^2+rm.^2)-K.*cosb./(da.^2+rn.^2))] cosc=(db.^2+rm.^2-BM.^2)./(db.*rm.*2) cosd=(db.^2+rn.^2-BN.^2)./(db.*rn.*2) psB1=p1*[1+2*(u-1)/(2*u+1)*r^3*(-K.*cosc./(db.^2+rm.^2)+K.*cosd./(db.^2+rn.^2))] psAB=(psA1+psB1)./2 plot(log10(AB/2),psAB) hold on end title("视电阻率测深曲线") figure x=-50:1:50 ab=10:4:100; [AB,X]=meshgrid(ab,x) MN=4 AM=(AB-MN)/2 BN=(AB-MN)/2 AN=AM+MN BM=BN+MN K=AM.*AN/MN da=((X-2-AM).^2+h^2).^(1/2) db=((X+2+BN).^2+h^2).^(1/2) rm=((X-2).^2+h^2).^(1/2) rn=((X+2).^2+h^2).^(1/2) cosa=(da.^2+rm.^2-AM.^2)./(2*da.*rm) cosb=(da.^2+rn.^2-AN.^2)./(2*da.*rn) psA1=p1*[1+2*(u-1)./(2*u+1)*r.^3*(K.*cosa./(da.^2+rm.^2)-K.*cosb./(da.^2+rn.^2))] cosc=(db.^2+rm.^2-BM.^2)./(db.*rm.*2) cosd=(db.^2+rn.^2-BN.^2)./(db.*rn.*2) psB1=p1*[1+2*(u-1)/(2*u+1)*r^3*(-K.*cosc./(db.^2+rm.^2)+K.*cosd./(db.^2+rn.^2))] psAB=(psA1+psB1)./2 pcolor(X,log10(AB./2),psAB),shading interp set(gca,'YDir','reverse'); colorbar xlabel('X(m)'),ylabel('AB/2(m)'); title("拟断面图") %这是数值模拟实验 % 联合刨面 r=5 h=10 dy=1 ny=101 ymin=-50 dx=1 nx=101 xmin=-50 p1=10 p2=8 MN=1 AM=10 AN=14 BN=10 BM=14 dx=1 nx=101 n=0.3 u=p2/p1 y=ymin:dy:(ymin+(ny-1)*dy) x=xmin:dx:(xmin+(nx-1)*dx) [X,Y]=meshgrid(x,y) KK=AM*AN/MN da=((x-0.5-AM).^2+h^2).^(1/2) db=((x+0.5+BN).^2+h^2).^(1/2) rm=((x-0.5).^2+h^2).^(1/2) rn=((x+0.5).^2+h^2).^(1/2) cosa=(da.^2+rm.^2-AM^2)./(da.*rm.*2) cosb=(da.^2+rn.^2-AN^2)./(da.*rn.*2) psA=p1*[1+2*KK*(u-1)/(2*u+1)*r^3*(cosa./(da.^2+rm.^2)-cosb./(da.^2+rn.^2))] cosc=(db.^2+rm.^2-BM^2)./(db.*rm.*2) cosd=(db.^2+rn.^2-BN^2)./(db.*rn.*2) psB=p1*[1+2*KK*(u-1)/(2*u+1)*r^3*(-cosc./(db.^2+rm.^2)+cosd./(db.^2+rn.^2))] p3=p2/(1-n) u=p3/p1 psA2=p1*[1+2*KK*(u-1)/(2*u+1)*r^3*(cosa./(da.^2+rm.^2)-cosb./(da.^2+rn.^2))] psB2=p1*[1+2*KK*(u-1)/(2*u+1)*r^3*(-cosc./(db.^2+rm.^2)+cosd./(db.^2+rn.^2))] nsA=1-psA./psA2 nsB=1-psB./psB2 figure plot(x,nsA) hold on plot(x,nsB) title("低阻球体上方连剖视极化率曲线") legend("nsA","psB") xlabel("X"),ylabel("ns") %中间梯度装置 p1=10 p2=8 u=p2/p1 ps1=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*x.^2)./(h^2+x.^2).^5/2] p3=p2/(1-n) u=p3/p1 ps2=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*x.^2)./(h^2+x.^2).^5/2] ns=1-ps1./ps2 figure plot(x,ns) title("中间梯度视极化率主刨面图") xlabel("X"),ylabel("ns") hold on figure for y=-5:1:5 u=p2/p1 ps1=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*x.^2+y^2)./(h^2+x.^2+y^2).^5/2] p3=p2/(1-n) u=p3/p1 ps2=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*x.^2+y^2)./(h^2+x.^2+y^2).^5/2] ns=1-ps1./ps2 plot(x,ns) hold on end grid on; title('随刨面位置变化') xlabel("X"),ylabel("ns") figure ps=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*X.^2+Y.^2)./(h^2+X.^2+Y.^2).^5/2] p3=p2/(1-n) u=p3/p1 ps2=p1.*[1+2*(u-1)./(2*u+1).*r^3*(h^2-2*X.^2+Y.^2)./(h^2+Y.^2+X.^2).^5/2] ns=1-ps1./ps2 pcolor(X,Y,ns);shading interp colorbar title('中间梯度等值线图') %对称四极 figure for x=0:1:50 u=p2/p1 AB=2:4:100 MN=1 AM=(AB-MN)/2 BN=(AB-MN)/2 AN=AM+MN BM=BN+MN K=AM.*AN/MN da=((x-0.5-AM).^2+h^2).^(1/2) db=((x+0.5+BN).^2+h^2).^(1/2) rm=((x-0.5).^2+h^2)^(1/2) rn=((x+0.5).^2+h^2)^(1/2) cosa=(da.^2+rm^2-AM.^2)./(2*da.*rm) cosb=(da.^2+rn^2-AN.^2)./(2*da.*rn) psA1=p1*[1+2*(u-1)./(2*u+1)*r.^3*(K.*cosa./(da.^2+rm.^2)-K.*cosb./(da.^2+rn.^2))] cosc=(db.^2+rm.^2-BM.^2)./(db.*rm.*2) cosd=(db.^2+rn.^2-BN.^2)./(db.*rn.*2) psB1=p1*[1+2*(u-1)/(2*u+1)*r^3*(-K.*cosc./(db.^2+rm.^2)+K.*cosd./(db.^2+rn.^2))] p3=p2/(1-n) u2=p3/p1 psA2=p1*[1+2*(u2-1)./(2*u2+1)*r.^3*(K.*cosa./(da.^2+rm.^2)-K.*cosb./(da.^2+rn.^2))] psB2=p1*[1+2*(u2-1)/(2*u2+1)*r^3*(-K.*cosc./(db.^2+rm.^2)+K.*cosd./(db.^2+rn.^2))] nsA=1-psA1./psA2 nsB=1-psB1./psB2 ns=(nsA+nsB)/2 plot(log10(AB/2),ns) hold on end grid on title("对称四级视极化率") xlabel("AB/2"),ylabel("ns") figure x=-50:1:50 ab=10:4:100; [AB,X]=meshgrid(ab,x) MN=1 AM=(AB-MN)/2 BN=(AB-MN)/2 AN=AM+MN BM=BN+MN K=AM.*AN/MN da=((X-0.5-AM).^2+h^2).^(1/2) db=((X+0.5+BN).^2+h^2).^(1/2) rm=((X-0.5).^2+h^2).^(1/2) rn=((X+0.5).^2+h^2).^(1/2) cosa=(da.^2+rm.^2-AM.^2)./(2*da.*rm) cosb=(da.^2+rn.^2-AN.^2)./(2*da.*rn) psA1=p1*[1+2*(u-1)./(2*u+1)*r.^3*(K.*cosa./(da.^2+rm.^2)-K.*cosb./(da.^2+rn.^2))] cosc=(db.^2+rm.^2-BM.^2)./(db.*rm.*2) cosd=(db.^2+rn.^2-BN.^2)./(db.*rn.*2) psB1=p1*[1+2*(u-1)/(2*u+1)*r^3*(-K.*cosc./(db.^2+rm.^2)+K.*cosd./(db.^2+rn.^2))] p3=p2/(1-n) u=p3/p1 psA2=p1*[1+2*(u-1)./(2*u+1)*r.^3*(K.*cosa./(da.^2+rm.^2)-K.*cosb./(da.^2+rn.^2))] psB2=p1*[1+2*(u-1)/(2*u+1)*r^3*(-K.*cosc./(db.^2+rm.^2)+K.*cosd./(db.^2+rn.^2))] nsA=1-psA1./psA2 nsB=1-psB1./psB2 ns2=(nsA+nsB)/2 pcolor(X,AB,ns2); shading interp set(gca,'YDir','reverse'); xlabel('X(m)'),ylabel('AB/2(m)'); colorbar title("拟断面图") %这是激发极化法 用不同的数据运行一下。
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